mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 16:56:26 +00:00
a0d11feefb
Using commit_do() to call alloc_sectors_start_trans() breaks when we're randomly injecting transaction restarts - the restart in the commit causes us to leak the lock that alloc_sectorS_start_trans() takes. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2554 lines
65 KiB
C
2554 lines
65 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "bcachefs.h"
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#include "alloc_background.h"
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#include "alloc_foreground.h"
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#include "backpointers.h"
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#include "bkey_buf.h"
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#include "btree_cache.h"
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#include "btree_io.h"
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#include "btree_key_cache.h"
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#include "btree_update.h"
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#include "btree_update_interior.h"
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#include "btree_gc.h"
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#include "btree_write_buffer.h"
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#include "buckets.h"
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#include "buckets_waiting_for_journal.h"
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#include "clock.h"
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#include "debug.h"
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#include "disk_accounting.h"
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#include "ec.h"
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#include "error.h"
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#include "lru.h"
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#include "recovery.h"
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#include "trace.h"
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#include "varint.h"
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#include <linux/kthread.h>
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#include <linux/math64.h>
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#include <linux/random.h>
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#include <linux/rculist.h>
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#include <linux/rcupdate.h>
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#include <linux/sched/task.h>
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#include <linux/sort.h>
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#include <linux/jiffies.h>
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static void bch2_discard_one_bucket_fast(struct bch_dev *, u64);
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/* Persistent alloc info: */
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static const unsigned BCH_ALLOC_V1_FIELD_BYTES[] = {
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#define x(name, bits) [BCH_ALLOC_FIELD_V1_##name] = bits / 8,
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BCH_ALLOC_FIELDS_V1()
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#undef x
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};
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struct bkey_alloc_unpacked {
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u64 journal_seq;
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u8 gen;
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u8 oldest_gen;
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u8 data_type;
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bool need_discard:1;
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bool need_inc_gen:1;
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#define x(_name, _bits) u##_bits _name;
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BCH_ALLOC_FIELDS_V2()
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#undef x
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};
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static inline u64 alloc_field_v1_get(const struct bch_alloc *a,
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const void **p, unsigned field)
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{
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unsigned bytes = BCH_ALLOC_V1_FIELD_BYTES[field];
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u64 v;
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if (!(a->fields & (1 << field)))
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return 0;
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switch (bytes) {
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case 1:
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v = *((const u8 *) *p);
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break;
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case 2:
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v = le16_to_cpup(*p);
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break;
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case 4:
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v = le32_to_cpup(*p);
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break;
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case 8:
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v = le64_to_cpup(*p);
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break;
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default:
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BUG();
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}
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*p += bytes;
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return v;
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}
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static void bch2_alloc_unpack_v1(struct bkey_alloc_unpacked *out,
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struct bkey_s_c k)
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{
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const struct bch_alloc *in = bkey_s_c_to_alloc(k).v;
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const void *d = in->data;
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unsigned idx = 0;
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out->gen = in->gen;
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#define x(_name, _bits) out->_name = alloc_field_v1_get(in, &d, idx++);
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BCH_ALLOC_FIELDS_V1()
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#undef x
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}
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static int bch2_alloc_unpack_v2(struct bkey_alloc_unpacked *out,
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struct bkey_s_c k)
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{
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struct bkey_s_c_alloc_v2 a = bkey_s_c_to_alloc_v2(k);
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const u8 *in = a.v->data;
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const u8 *end = bkey_val_end(a);
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unsigned fieldnr = 0;
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int ret;
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u64 v;
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out->gen = a.v->gen;
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out->oldest_gen = a.v->oldest_gen;
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out->data_type = a.v->data_type;
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#define x(_name, _bits) \
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if (fieldnr < a.v->nr_fields) { \
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ret = bch2_varint_decode_fast(in, end, &v); \
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if (ret < 0) \
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return ret; \
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in += ret; \
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} else { \
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v = 0; \
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} \
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out->_name = v; \
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if (v != out->_name) \
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return -1; \
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fieldnr++;
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BCH_ALLOC_FIELDS_V2()
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#undef x
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return 0;
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}
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static int bch2_alloc_unpack_v3(struct bkey_alloc_unpacked *out,
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struct bkey_s_c k)
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{
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struct bkey_s_c_alloc_v3 a = bkey_s_c_to_alloc_v3(k);
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const u8 *in = a.v->data;
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const u8 *end = bkey_val_end(a);
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unsigned fieldnr = 0;
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int ret;
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u64 v;
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out->gen = a.v->gen;
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out->oldest_gen = a.v->oldest_gen;
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out->data_type = a.v->data_type;
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out->need_discard = BCH_ALLOC_V3_NEED_DISCARD(a.v);
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out->need_inc_gen = BCH_ALLOC_V3_NEED_INC_GEN(a.v);
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out->journal_seq = le64_to_cpu(a.v->journal_seq);
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#define x(_name, _bits) \
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if (fieldnr < a.v->nr_fields) { \
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ret = bch2_varint_decode_fast(in, end, &v); \
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if (ret < 0) \
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return ret; \
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in += ret; \
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} else { \
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v = 0; \
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} \
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out->_name = v; \
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if (v != out->_name) \
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return -1; \
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fieldnr++;
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BCH_ALLOC_FIELDS_V2()
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#undef x
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return 0;
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}
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static struct bkey_alloc_unpacked bch2_alloc_unpack(struct bkey_s_c k)
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{
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struct bkey_alloc_unpacked ret = { .gen = 0 };
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switch (k.k->type) {
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case KEY_TYPE_alloc:
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bch2_alloc_unpack_v1(&ret, k);
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break;
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case KEY_TYPE_alloc_v2:
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bch2_alloc_unpack_v2(&ret, k);
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break;
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case KEY_TYPE_alloc_v3:
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bch2_alloc_unpack_v3(&ret, k);
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break;
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}
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return ret;
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}
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static unsigned bch_alloc_v1_val_u64s(const struct bch_alloc *a)
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{
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unsigned i, bytes = offsetof(struct bch_alloc, data);
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for (i = 0; i < ARRAY_SIZE(BCH_ALLOC_V1_FIELD_BYTES); i++)
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if (a->fields & (1 << i))
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bytes += BCH_ALLOC_V1_FIELD_BYTES[i];
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return DIV_ROUND_UP(bytes, sizeof(u64));
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}
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int bch2_alloc_v1_validate(struct bch_fs *c, struct bkey_s_c k,
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enum bch_validate_flags flags)
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{
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struct bkey_s_c_alloc a = bkey_s_c_to_alloc(k);
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int ret = 0;
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/* allow for unknown fields */
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bkey_fsck_err_on(bkey_val_u64s(a.k) < bch_alloc_v1_val_u64s(a.v),
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c, alloc_v1_val_size_bad,
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"incorrect value size (%zu < %u)",
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bkey_val_u64s(a.k), bch_alloc_v1_val_u64s(a.v));
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fsck_err:
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return ret;
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}
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int bch2_alloc_v2_validate(struct bch_fs *c, struct bkey_s_c k,
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enum bch_validate_flags flags)
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{
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struct bkey_alloc_unpacked u;
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int ret = 0;
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bkey_fsck_err_on(bch2_alloc_unpack_v2(&u, k),
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c, alloc_v2_unpack_error,
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"unpack error");
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fsck_err:
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return ret;
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}
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int bch2_alloc_v3_validate(struct bch_fs *c, struct bkey_s_c k,
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enum bch_validate_flags flags)
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{
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struct bkey_alloc_unpacked u;
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int ret = 0;
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bkey_fsck_err_on(bch2_alloc_unpack_v3(&u, k),
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c, alloc_v2_unpack_error,
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"unpack error");
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fsck_err:
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return ret;
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}
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int bch2_alloc_v4_validate(struct bch_fs *c, struct bkey_s_c k,
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enum bch_validate_flags flags)
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{
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struct bch_alloc_v4 a;
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int ret = 0;
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bkey_val_copy(&a, bkey_s_c_to_alloc_v4(k));
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bkey_fsck_err_on(alloc_v4_u64s_noerror(&a) > bkey_val_u64s(k.k),
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c, alloc_v4_val_size_bad,
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"bad val size (%u > %zu)",
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alloc_v4_u64s_noerror(&a), bkey_val_u64s(k.k));
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bkey_fsck_err_on(!BCH_ALLOC_V4_BACKPOINTERS_START(&a) &&
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BCH_ALLOC_V4_NR_BACKPOINTERS(&a),
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c, alloc_v4_backpointers_start_bad,
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"invalid backpointers_start");
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bkey_fsck_err_on(alloc_data_type(a, a.data_type) != a.data_type,
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c, alloc_key_data_type_bad,
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"invalid data type (got %u should be %u)",
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a.data_type, alloc_data_type(a, a.data_type));
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for (unsigned i = 0; i < 2; i++)
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bkey_fsck_err_on(a.io_time[i] > LRU_TIME_MAX,
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c, alloc_key_io_time_bad,
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"invalid io_time[%s]: %llu, max %llu",
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i == READ ? "read" : "write",
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a.io_time[i], LRU_TIME_MAX);
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unsigned stripe_sectors = BCH_ALLOC_V4_BACKPOINTERS_START(&a) * sizeof(u64) >
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offsetof(struct bch_alloc_v4, stripe_sectors)
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? a.stripe_sectors
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: 0;
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switch (a.data_type) {
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case BCH_DATA_free:
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case BCH_DATA_need_gc_gens:
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case BCH_DATA_need_discard:
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bkey_fsck_err_on(stripe_sectors ||
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a.dirty_sectors ||
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a.cached_sectors ||
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a.stripe,
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c, alloc_key_empty_but_have_data,
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"empty data type free but have data %u.%u.%u %u",
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stripe_sectors,
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a.dirty_sectors,
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a.cached_sectors,
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a.stripe);
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break;
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case BCH_DATA_sb:
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case BCH_DATA_journal:
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case BCH_DATA_btree:
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case BCH_DATA_user:
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case BCH_DATA_parity:
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bkey_fsck_err_on(!a.dirty_sectors &&
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!stripe_sectors,
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c, alloc_key_dirty_sectors_0,
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"data_type %s but dirty_sectors==0",
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bch2_data_type_str(a.data_type));
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break;
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case BCH_DATA_cached:
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bkey_fsck_err_on(!a.cached_sectors ||
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a.dirty_sectors ||
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stripe_sectors ||
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a.stripe,
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c, alloc_key_cached_inconsistency,
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"data type inconsistency");
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bkey_fsck_err_on(!a.io_time[READ] &&
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c->curr_recovery_pass > BCH_RECOVERY_PASS_check_alloc_to_lru_refs,
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c, alloc_key_cached_but_read_time_zero,
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"cached bucket with read_time == 0");
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break;
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case BCH_DATA_stripe:
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break;
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}
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fsck_err:
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return ret;
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}
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void bch2_alloc_v4_swab(struct bkey_s k)
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{
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struct bch_alloc_v4 *a = bkey_s_to_alloc_v4(k).v;
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struct bch_backpointer *bp, *bps;
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a->journal_seq = swab64(a->journal_seq);
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a->flags = swab32(a->flags);
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a->dirty_sectors = swab32(a->dirty_sectors);
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a->cached_sectors = swab32(a->cached_sectors);
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a->io_time[0] = swab64(a->io_time[0]);
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a->io_time[1] = swab64(a->io_time[1]);
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a->stripe = swab32(a->stripe);
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a->nr_external_backpointers = swab32(a->nr_external_backpointers);
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a->stripe_sectors = swab32(a->stripe_sectors);
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bps = alloc_v4_backpointers(a);
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for (bp = bps; bp < bps + BCH_ALLOC_V4_NR_BACKPOINTERS(a); bp++) {
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bp->bucket_offset = swab40(bp->bucket_offset);
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bp->bucket_len = swab32(bp->bucket_len);
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bch2_bpos_swab(&bp->pos);
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}
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}
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void bch2_alloc_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k)
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{
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struct bch_alloc_v4 _a;
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const struct bch_alloc_v4 *a = bch2_alloc_to_v4(k, &_a);
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struct bch_dev *ca = c ? bch2_dev_bucket_tryget_noerror(c, k.k->p) : NULL;
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prt_newline(out);
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printbuf_indent_add(out, 2);
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prt_printf(out, "gen %u oldest_gen %u data_type ", a->gen, a->oldest_gen);
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bch2_prt_data_type(out, a->data_type);
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prt_newline(out);
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prt_printf(out, "journal_seq %llu\n", a->journal_seq);
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prt_printf(out, "need_discard %llu\n", BCH_ALLOC_V4_NEED_DISCARD(a));
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prt_printf(out, "need_inc_gen %llu\n", BCH_ALLOC_V4_NEED_INC_GEN(a));
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prt_printf(out, "dirty_sectors %u\n", a->dirty_sectors);
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prt_printf(out, "stripe_sectors %u\n", a->stripe_sectors);
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prt_printf(out, "cached_sectors %u\n", a->cached_sectors);
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prt_printf(out, "stripe %u\n", a->stripe);
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prt_printf(out, "stripe_redundancy %u\n", a->stripe_redundancy);
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prt_printf(out, "io_time[READ] %llu\n", a->io_time[READ]);
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prt_printf(out, "io_time[WRITE] %llu\n", a->io_time[WRITE]);
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if (ca)
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prt_printf(out, "fragmentation %llu\n", alloc_lru_idx_fragmentation(*a, ca));
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prt_printf(out, "bp_start %llu\n", BCH_ALLOC_V4_BACKPOINTERS_START(a));
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printbuf_indent_sub(out, 2);
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bch2_dev_put(ca);
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}
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void __bch2_alloc_to_v4(struct bkey_s_c k, struct bch_alloc_v4 *out)
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{
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if (k.k->type == KEY_TYPE_alloc_v4) {
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void *src, *dst;
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*out = *bkey_s_c_to_alloc_v4(k).v;
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src = alloc_v4_backpointers(out);
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SET_BCH_ALLOC_V4_BACKPOINTERS_START(out, BCH_ALLOC_V4_U64s);
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dst = alloc_v4_backpointers(out);
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if (src < dst)
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memset(src, 0, dst - src);
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SET_BCH_ALLOC_V4_NR_BACKPOINTERS(out, 0);
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} else {
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struct bkey_alloc_unpacked u = bch2_alloc_unpack(k);
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*out = (struct bch_alloc_v4) {
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.journal_seq = u.journal_seq,
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.flags = u.need_discard,
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.gen = u.gen,
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.oldest_gen = u.oldest_gen,
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.data_type = u.data_type,
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.stripe_redundancy = u.stripe_redundancy,
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.dirty_sectors = u.dirty_sectors,
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.cached_sectors = u.cached_sectors,
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.io_time[READ] = u.read_time,
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.io_time[WRITE] = u.write_time,
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.stripe = u.stripe,
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};
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SET_BCH_ALLOC_V4_BACKPOINTERS_START(out, BCH_ALLOC_V4_U64s);
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}
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}
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static noinline struct bkey_i_alloc_v4 *
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__bch2_alloc_to_v4_mut(struct btree_trans *trans, struct bkey_s_c k)
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{
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struct bkey_i_alloc_v4 *ret;
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ret = bch2_trans_kmalloc(trans, max(bkey_bytes(k.k), sizeof(struct bkey_i_alloc_v4)));
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if (IS_ERR(ret))
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return ret;
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if (k.k->type == KEY_TYPE_alloc_v4) {
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void *src, *dst;
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bkey_reassemble(&ret->k_i, k);
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src = alloc_v4_backpointers(&ret->v);
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SET_BCH_ALLOC_V4_BACKPOINTERS_START(&ret->v, BCH_ALLOC_V4_U64s);
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dst = alloc_v4_backpointers(&ret->v);
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if (src < dst)
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memset(src, 0, dst - src);
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SET_BCH_ALLOC_V4_NR_BACKPOINTERS(&ret->v, 0);
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set_alloc_v4_u64s(ret);
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} else {
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bkey_alloc_v4_init(&ret->k_i);
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ret->k.p = k.k->p;
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bch2_alloc_to_v4(k, &ret->v);
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}
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return ret;
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}
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static inline struct bkey_i_alloc_v4 *bch2_alloc_to_v4_mut_inlined(struct btree_trans *trans, struct bkey_s_c k)
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{
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struct bkey_s_c_alloc_v4 a;
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if (likely(k.k->type == KEY_TYPE_alloc_v4) &&
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((a = bkey_s_c_to_alloc_v4(k), true) &&
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BCH_ALLOC_V4_NR_BACKPOINTERS(a.v) == 0))
|
|
return bch2_bkey_make_mut_noupdate_typed(trans, k, alloc_v4);
|
|
|
|
return __bch2_alloc_to_v4_mut(trans, k);
|
|
}
|
|
|
|
struct bkey_i_alloc_v4 *bch2_alloc_to_v4_mut(struct btree_trans *trans, struct bkey_s_c k)
|
|
{
|
|
return bch2_alloc_to_v4_mut_inlined(trans, k);
|
|
}
|
|
|
|
struct bkey_i_alloc_v4 *
|
|
bch2_trans_start_alloc_update_noupdate(struct btree_trans *trans, struct btree_iter *iter,
|
|
struct bpos pos)
|
|
{
|
|
struct bkey_s_c k = bch2_bkey_get_iter(trans, iter, BTREE_ID_alloc, pos,
|
|
BTREE_ITER_with_updates|
|
|
BTREE_ITER_cached|
|
|
BTREE_ITER_intent);
|
|
int ret = bkey_err(k);
|
|
if (unlikely(ret))
|
|
return ERR_PTR(ret);
|
|
|
|
struct bkey_i_alloc_v4 *a = bch2_alloc_to_v4_mut_inlined(trans, k);
|
|
ret = PTR_ERR_OR_ZERO(a);
|
|
if (unlikely(ret))
|
|
goto err;
|
|
return a;
|
|
err:
|
|
bch2_trans_iter_exit(trans, iter);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
__flatten
|
|
struct bkey_i_alloc_v4 *bch2_trans_start_alloc_update(struct btree_trans *trans, struct bpos pos,
|
|
enum btree_iter_update_trigger_flags flags)
|
|
{
|
|
struct btree_iter iter;
|
|
struct bkey_i_alloc_v4 *a = bch2_trans_start_alloc_update_noupdate(trans, &iter, pos);
|
|
int ret = PTR_ERR_OR_ZERO(a);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
ret = bch2_trans_update(trans, &iter, &a->k_i, flags);
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
return unlikely(ret) ? ERR_PTR(ret) : a;
|
|
}
|
|
|
|
static struct bpos alloc_gens_pos(struct bpos pos, unsigned *offset)
|
|
{
|
|
*offset = pos.offset & KEY_TYPE_BUCKET_GENS_MASK;
|
|
|
|
pos.offset >>= KEY_TYPE_BUCKET_GENS_BITS;
|
|
return pos;
|
|
}
|
|
|
|
static struct bpos bucket_gens_pos_to_alloc(struct bpos pos, unsigned offset)
|
|
{
|
|
pos.offset <<= KEY_TYPE_BUCKET_GENS_BITS;
|
|
pos.offset += offset;
|
|
return pos;
|
|
}
|
|
|
|
static unsigned alloc_gen(struct bkey_s_c k, unsigned offset)
|
|
{
|
|
return k.k->type == KEY_TYPE_bucket_gens
|
|
? bkey_s_c_to_bucket_gens(k).v->gens[offset]
|
|
: 0;
|
|
}
|
|
|
|
int bch2_bucket_gens_validate(struct bch_fs *c, struct bkey_s_c k,
|
|
enum bch_validate_flags flags)
|
|
{
|
|
int ret = 0;
|
|
|
|
bkey_fsck_err_on(bkey_val_bytes(k.k) != sizeof(struct bch_bucket_gens),
|
|
c, bucket_gens_val_size_bad,
|
|
"bad val size (%zu != %zu)",
|
|
bkey_val_bytes(k.k), sizeof(struct bch_bucket_gens));
|
|
fsck_err:
|
|
return ret;
|
|
}
|
|
|
|
void bch2_bucket_gens_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k)
|
|
{
|
|
struct bkey_s_c_bucket_gens g = bkey_s_c_to_bucket_gens(k);
|
|
unsigned i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(g.v->gens); i++) {
|
|
if (i)
|
|
prt_char(out, ' ');
|
|
prt_printf(out, "%u", g.v->gens[i]);
|
|
}
|
|
}
|
|
|
|
int bch2_bucket_gens_init(struct bch_fs *c)
|
|
{
|
|
struct btree_trans *trans = bch2_trans_get(c);
|
|
struct bkey_i_bucket_gens g;
|
|
bool have_bucket_gens_key = false;
|
|
int ret;
|
|
|
|
ret = for_each_btree_key(trans, iter, BTREE_ID_alloc, POS_MIN,
|
|
BTREE_ITER_prefetch, k, ({
|
|
/*
|
|
* Not a fsck error because this is checked/repaired by
|
|
* bch2_check_alloc_key() which runs later:
|
|
*/
|
|
if (!bch2_dev_bucket_exists(c, k.k->p))
|
|
continue;
|
|
|
|
struct bch_alloc_v4 a;
|
|
u8 gen = bch2_alloc_to_v4(k, &a)->gen;
|
|
unsigned offset;
|
|
struct bpos pos = alloc_gens_pos(iter.pos, &offset);
|
|
int ret2 = 0;
|
|
|
|
if (have_bucket_gens_key && !bkey_eq(g.k.p, pos)) {
|
|
ret2 = bch2_btree_insert_trans(trans, BTREE_ID_bucket_gens, &g.k_i, 0) ?:
|
|
bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret2)
|
|
goto iter_err;
|
|
have_bucket_gens_key = false;
|
|
}
|
|
|
|
if (!have_bucket_gens_key) {
|
|
bkey_bucket_gens_init(&g.k_i);
|
|
g.k.p = pos;
|
|
have_bucket_gens_key = true;
|
|
}
|
|
|
|
g.v.gens[offset] = gen;
|
|
iter_err:
|
|
ret2;
|
|
}));
|
|
|
|
if (have_bucket_gens_key && !ret)
|
|
ret = commit_do(trans, NULL, NULL,
|
|
BCH_TRANS_COMMIT_no_enospc,
|
|
bch2_btree_insert_trans(trans, BTREE_ID_bucket_gens, &g.k_i, 0));
|
|
|
|
bch2_trans_put(trans);
|
|
|
|
bch_err_fn(c, ret);
|
|
return ret;
|
|
}
|
|
|
|
int bch2_alloc_read(struct bch_fs *c)
|
|
{
|
|
struct btree_trans *trans = bch2_trans_get(c);
|
|
struct bch_dev *ca = NULL;
|
|
int ret;
|
|
|
|
if (c->sb.version_upgrade_complete >= bcachefs_metadata_version_bucket_gens) {
|
|
ret = for_each_btree_key(trans, iter, BTREE_ID_bucket_gens, POS_MIN,
|
|
BTREE_ITER_prefetch, k, ({
|
|
u64 start = bucket_gens_pos_to_alloc(k.k->p, 0).offset;
|
|
u64 end = bucket_gens_pos_to_alloc(bpos_nosnap_successor(k.k->p), 0).offset;
|
|
|
|
if (k.k->type != KEY_TYPE_bucket_gens)
|
|
continue;
|
|
|
|
ca = bch2_dev_iterate(c, ca, k.k->p.inode);
|
|
/*
|
|
* Not a fsck error because this is checked/repaired by
|
|
* bch2_check_alloc_key() which runs later:
|
|
*/
|
|
if (!ca) {
|
|
bch2_btree_iter_set_pos(&iter, POS(k.k->p.inode + 1, 0));
|
|
continue;
|
|
}
|
|
|
|
const struct bch_bucket_gens *g = bkey_s_c_to_bucket_gens(k).v;
|
|
|
|
for (u64 b = max_t(u64, ca->mi.first_bucket, start);
|
|
b < min_t(u64, ca->mi.nbuckets, end);
|
|
b++)
|
|
*bucket_gen(ca, b) = g->gens[b & KEY_TYPE_BUCKET_GENS_MASK];
|
|
0;
|
|
}));
|
|
} else {
|
|
ret = for_each_btree_key(trans, iter, BTREE_ID_alloc, POS_MIN,
|
|
BTREE_ITER_prefetch, k, ({
|
|
ca = bch2_dev_iterate(c, ca, k.k->p.inode);
|
|
/*
|
|
* Not a fsck error because this is checked/repaired by
|
|
* bch2_check_alloc_key() which runs later:
|
|
*/
|
|
if (!ca) {
|
|
bch2_btree_iter_set_pos(&iter, POS(k.k->p.inode + 1, 0));
|
|
continue;
|
|
}
|
|
|
|
if (k.k->p.offset < ca->mi.first_bucket) {
|
|
bch2_btree_iter_set_pos(&iter, POS(k.k->p.inode, ca->mi.first_bucket));
|
|
continue;
|
|
}
|
|
|
|
if (k.k->p.offset >= ca->mi.nbuckets) {
|
|
bch2_btree_iter_set_pos(&iter, POS(k.k->p.inode + 1, 0));
|
|
continue;
|
|
}
|
|
|
|
struct bch_alloc_v4 a;
|
|
*bucket_gen(ca, k.k->p.offset) = bch2_alloc_to_v4(k, &a)->gen;
|
|
0;
|
|
}));
|
|
}
|
|
|
|
bch2_dev_put(ca);
|
|
bch2_trans_put(trans);
|
|
|
|
bch_err_fn(c, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Free space/discard btree: */
|
|
|
|
static int bch2_bucket_do_index(struct btree_trans *trans,
|
|
struct bch_dev *ca,
|
|
struct bkey_s_c alloc_k,
|
|
const struct bch_alloc_v4 *a,
|
|
bool set)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct btree_iter iter;
|
|
struct bkey_s_c old;
|
|
struct bkey_i *k;
|
|
enum btree_id btree;
|
|
enum bch_bkey_type old_type = !set ? KEY_TYPE_set : KEY_TYPE_deleted;
|
|
enum bch_bkey_type new_type = set ? KEY_TYPE_set : KEY_TYPE_deleted;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret;
|
|
|
|
if (a->data_type != BCH_DATA_free &&
|
|
a->data_type != BCH_DATA_need_discard)
|
|
return 0;
|
|
|
|
k = bch2_trans_kmalloc_nomemzero(trans, sizeof(*k));
|
|
if (IS_ERR(k))
|
|
return PTR_ERR(k);
|
|
|
|
bkey_init(&k->k);
|
|
k->k.type = new_type;
|
|
|
|
switch (a->data_type) {
|
|
case BCH_DATA_free:
|
|
btree = BTREE_ID_freespace;
|
|
k->k.p = alloc_freespace_pos(alloc_k.k->p, *a);
|
|
bch2_key_resize(&k->k, 1);
|
|
break;
|
|
case BCH_DATA_need_discard:
|
|
btree = BTREE_ID_need_discard;
|
|
k->k.p = alloc_k.k->p;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
old = bch2_bkey_get_iter(trans, &iter, btree,
|
|
bkey_start_pos(&k->k),
|
|
BTREE_ITER_intent);
|
|
ret = bkey_err(old);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (ca->mi.freespace_initialized &&
|
|
c->curr_recovery_pass > BCH_RECOVERY_PASS_check_alloc_info &&
|
|
bch2_trans_inconsistent_on(old.k->type != old_type, trans,
|
|
"incorrect key when %s %s:%llu:%llu:0 (got %s should be %s)\n"
|
|
" for %s",
|
|
set ? "setting" : "clearing",
|
|
bch2_btree_id_str(btree),
|
|
iter.pos.inode,
|
|
iter.pos.offset,
|
|
bch2_bkey_types[old.k->type],
|
|
bch2_bkey_types[old_type],
|
|
(bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf))) {
|
|
ret = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
ret = bch2_trans_update(trans, &iter, k, 0);
|
|
err:
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
static noinline int bch2_bucket_gen_update(struct btree_trans *trans,
|
|
struct bpos bucket, u8 gen)
|
|
{
|
|
struct btree_iter iter;
|
|
unsigned offset;
|
|
struct bpos pos = alloc_gens_pos(bucket, &offset);
|
|
struct bkey_i_bucket_gens *g;
|
|
struct bkey_s_c k;
|
|
int ret;
|
|
|
|
g = bch2_trans_kmalloc(trans, sizeof(*g));
|
|
ret = PTR_ERR_OR_ZERO(g);
|
|
if (ret)
|
|
return ret;
|
|
|
|
k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_bucket_gens, pos,
|
|
BTREE_ITER_intent|
|
|
BTREE_ITER_with_updates);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (k.k->type != KEY_TYPE_bucket_gens) {
|
|
bkey_bucket_gens_init(&g->k_i);
|
|
g->k.p = iter.pos;
|
|
} else {
|
|
bkey_reassemble(&g->k_i, k);
|
|
}
|
|
|
|
g->v.gens[offset] = gen;
|
|
|
|
ret = bch2_trans_update(trans, &iter, &g->k_i, 0);
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
return ret;
|
|
}
|
|
|
|
static inline int bch2_dev_data_type_accounting_mod(struct btree_trans *trans, struct bch_dev *ca,
|
|
enum bch_data_type data_type,
|
|
s64 delta_buckets,
|
|
s64 delta_sectors,
|
|
s64 delta_fragmented, unsigned flags)
|
|
{
|
|
struct disk_accounting_pos acc = {
|
|
.type = BCH_DISK_ACCOUNTING_dev_data_type,
|
|
.dev_data_type.dev = ca->dev_idx,
|
|
.dev_data_type.data_type = data_type,
|
|
};
|
|
s64 d[3] = { delta_buckets, delta_sectors, delta_fragmented };
|
|
|
|
return bch2_disk_accounting_mod(trans, &acc, d, 3, flags & BTREE_TRIGGER_gc);
|
|
}
|
|
|
|
int bch2_alloc_key_to_dev_counters(struct btree_trans *trans, struct bch_dev *ca,
|
|
const struct bch_alloc_v4 *old,
|
|
const struct bch_alloc_v4 *new,
|
|
unsigned flags)
|
|
{
|
|
s64 old_sectors = bch2_bucket_sectors(*old);
|
|
s64 new_sectors = bch2_bucket_sectors(*new);
|
|
if (old->data_type != new->data_type) {
|
|
int ret = bch2_dev_data_type_accounting_mod(trans, ca, new->data_type,
|
|
1, new_sectors, bch2_bucket_sectors_fragmented(ca, *new), flags) ?:
|
|
bch2_dev_data_type_accounting_mod(trans, ca, old->data_type,
|
|
-1, -old_sectors, -bch2_bucket_sectors_fragmented(ca, *old), flags);
|
|
if (ret)
|
|
return ret;
|
|
} else if (old_sectors != new_sectors) {
|
|
int ret = bch2_dev_data_type_accounting_mod(trans, ca, new->data_type,
|
|
0,
|
|
new_sectors - old_sectors,
|
|
bch2_bucket_sectors_fragmented(ca, *new) -
|
|
bch2_bucket_sectors_fragmented(ca, *old), flags);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
s64 old_unstriped = bch2_bucket_sectors_unstriped(*old);
|
|
s64 new_unstriped = bch2_bucket_sectors_unstriped(*new);
|
|
if (old_unstriped != new_unstriped) {
|
|
int ret = bch2_dev_data_type_accounting_mod(trans, ca, BCH_DATA_unstriped,
|
|
!!new_unstriped - !!old_unstriped,
|
|
new_unstriped - old_unstriped,
|
|
0,
|
|
flags);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bch2_trigger_alloc(struct btree_trans *trans,
|
|
enum btree_id btree, unsigned level,
|
|
struct bkey_s_c old, struct bkey_s new,
|
|
enum btree_iter_update_trigger_flags flags)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret = 0;
|
|
|
|
struct bch_dev *ca = bch2_dev_bucket_tryget(c, new.k->p);
|
|
if (!ca)
|
|
return -EIO;
|
|
|
|
struct bch_alloc_v4 old_a_convert;
|
|
const struct bch_alloc_v4 *old_a = bch2_alloc_to_v4(old, &old_a_convert);
|
|
|
|
struct bch_alloc_v4 *new_a;
|
|
if (likely(new.k->type == KEY_TYPE_alloc_v4)) {
|
|
new_a = bkey_s_to_alloc_v4(new).v;
|
|
} else {
|
|
BUG_ON(!(flags & (BTREE_TRIGGER_gc|BTREE_TRIGGER_check_repair)));
|
|
|
|
struct bkey_i_alloc_v4 *new_ka = bch2_alloc_to_v4_mut_inlined(trans, new.s_c);
|
|
ret = PTR_ERR_OR_ZERO(new_ka);
|
|
if (unlikely(ret))
|
|
goto err;
|
|
new_a = &new_ka->v;
|
|
}
|
|
|
|
if (flags & BTREE_TRIGGER_transactional) {
|
|
alloc_data_type_set(new_a, new_a->data_type);
|
|
|
|
if (bch2_bucket_sectors_total(*new_a) > bch2_bucket_sectors_total(*old_a)) {
|
|
new_a->io_time[READ] = bch2_current_io_time(c, READ);
|
|
new_a->io_time[WRITE]= bch2_current_io_time(c, WRITE);
|
|
SET_BCH_ALLOC_V4_NEED_INC_GEN(new_a, true);
|
|
SET_BCH_ALLOC_V4_NEED_DISCARD(new_a, true);
|
|
}
|
|
|
|
if (data_type_is_empty(new_a->data_type) &&
|
|
BCH_ALLOC_V4_NEED_INC_GEN(new_a) &&
|
|
!bch2_bucket_is_open_safe(c, new.k->p.inode, new.k->p.offset)) {
|
|
new_a->gen++;
|
|
SET_BCH_ALLOC_V4_NEED_INC_GEN(new_a, false);
|
|
alloc_data_type_set(new_a, new_a->data_type);
|
|
}
|
|
|
|
if (old_a->data_type != new_a->data_type ||
|
|
(new_a->data_type == BCH_DATA_free &&
|
|
alloc_freespace_genbits(*old_a) != alloc_freespace_genbits(*new_a))) {
|
|
ret = bch2_bucket_do_index(trans, ca, old, old_a, false) ?:
|
|
bch2_bucket_do_index(trans, ca, new.s_c, new_a, true);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if (new_a->data_type == BCH_DATA_cached &&
|
|
!new_a->io_time[READ])
|
|
new_a->io_time[READ] = bch2_current_io_time(c, READ);
|
|
|
|
u64 old_lru = alloc_lru_idx_read(*old_a);
|
|
u64 new_lru = alloc_lru_idx_read(*new_a);
|
|
if (old_lru != new_lru) {
|
|
ret = bch2_lru_change(trans, new.k->p.inode,
|
|
bucket_to_u64(new.k->p),
|
|
old_lru, new_lru);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
old_lru = alloc_lru_idx_fragmentation(*old_a, ca);
|
|
new_lru = alloc_lru_idx_fragmentation(*new_a, ca);
|
|
if (old_lru != new_lru) {
|
|
ret = bch2_lru_change(trans,
|
|
BCH_LRU_FRAGMENTATION_START,
|
|
bucket_to_u64(new.k->p),
|
|
old_lru, new_lru);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if (old_a->gen != new_a->gen) {
|
|
ret = bch2_bucket_gen_update(trans, new.k->p, new_a->gen);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if ((flags & BTREE_TRIGGER_bucket_invalidate) &&
|
|
old_a->cached_sectors) {
|
|
ret = bch2_mod_dev_cached_sectors(trans, ca->dev_idx,
|
|
-((s64) old_a->cached_sectors),
|
|
flags & BTREE_TRIGGER_gc);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
ret = bch2_alloc_key_to_dev_counters(trans, ca, old_a, new_a, flags);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if ((flags & BTREE_TRIGGER_atomic) && (flags & BTREE_TRIGGER_insert)) {
|
|
u64 journal_seq = trans->journal_res.seq;
|
|
u64 bucket_journal_seq = new_a->journal_seq;
|
|
|
|
if ((flags & BTREE_TRIGGER_insert) &&
|
|
data_type_is_empty(old_a->data_type) !=
|
|
data_type_is_empty(new_a->data_type) &&
|
|
new.k->type == KEY_TYPE_alloc_v4) {
|
|
struct bch_alloc_v4 *v = bkey_s_to_alloc_v4(new).v;
|
|
|
|
/*
|
|
* If the btree updates referring to a bucket weren't flushed
|
|
* before the bucket became empty again, then the we don't have
|
|
* to wait on a journal flush before we can reuse the bucket:
|
|
*/
|
|
v->journal_seq = bucket_journal_seq =
|
|
data_type_is_empty(new_a->data_type) &&
|
|
(journal_seq == v->journal_seq ||
|
|
bch2_journal_noflush_seq(&c->journal, v->journal_seq))
|
|
? 0 : journal_seq;
|
|
}
|
|
|
|
if (!data_type_is_empty(old_a->data_type) &&
|
|
data_type_is_empty(new_a->data_type) &&
|
|
bucket_journal_seq) {
|
|
ret = bch2_set_bucket_needs_journal_commit(&c->buckets_waiting_for_journal,
|
|
c->journal.flushed_seq_ondisk,
|
|
new.k->p.inode, new.k->p.offset,
|
|
bucket_journal_seq);
|
|
if (bch2_fs_fatal_err_on(ret, c,
|
|
"setting bucket_needs_journal_commit: %s", bch2_err_str(ret)))
|
|
goto err;
|
|
}
|
|
|
|
if (new_a->gen != old_a->gen) {
|
|
rcu_read_lock();
|
|
u8 *gen = bucket_gen(ca, new.k->p.offset);
|
|
if (unlikely(!gen)) {
|
|
rcu_read_unlock();
|
|
goto invalid_bucket;
|
|
}
|
|
*gen = new_a->gen;
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
#define eval_state(_a, expr) ({ const struct bch_alloc_v4 *a = _a; expr; })
|
|
#define statechange(expr) !eval_state(old_a, expr) && eval_state(new_a, expr)
|
|
#define bucket_flushed(a) (!a->journal_seq || a->journal_seq <= c->journal.flushed_seq_ondisk)
|
|
|
|
if (statechange(a->data_type == BCH_DATA_free) &&
|
|
bucket_flushed(new_a))
|
|
closure_wake_up(&c->freelist_wait);
|
|
|
|
if (statechange(a->data_type == BCH_DATA_need_discard) &&
|
|
!bch2_bucket_is_open_safe(c, new.k->p.inode, new.k->p.offset) &&
|
|
bucket_flushed(new_a))
|
|
bch2_discard_one_bucket_fast(ca, new.k->p.offset);
|
|
|
|
if (statechange(a->data_type == BCH_DATA_cached) &&
|
|
!bch2_bucket_is_open(c, new.k->p.inode, new.k->p.offset) &&
|
|
should_invalidate_buckets(ca, bch2_dev_usage_read(ca)))
|
|
bch2_dev_do_invalidates(ca);
|
|
|
|
if (statechange(a->data_type == BCH_DATA_need_gc_gens))
|
|
bch2_gc_gens_async(c);
|
|
}
|
|
|
|
if ((flags & BTREE_TRIGGER_gc) && (flags & BTREE_TRIGGER_insert)) {
|
|
rcu_read_lock();
|
|
struct bucket *g = gc_bucket(ca, new.k->p.offset);
|
|
if (unlikely(!g)) {
|
|
rcu_read_unlock();
|
|
goto invalid_bucket;
|
|
}
|
|
g->gen_valid = 1;
|
|
g->gen = new_a->gen;
|
|
rcu_read_unlock();
|
|
}
|
|
err:
|
|
printbuf_exit(&buf);
|
|
bch2_dev_put(ca);
|
|
return ret;
|
|
invalid_bucket:
|
|
bch2_fs_inconsistent(c, "reference to invalid bucket\n %s",
|
|
(bch2_bkey_val_to_text(&buf, c, new.s_c), buf.buf));
|
|
ret = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* This synthesizes deleted extents for holes, similar to BTREE_ITER_slots for
|
|
* extents style btrees, but works on non-extents btrees:
|
|
*/
|
|
static struct bkey_s_c bch2_get_key_or_hole(struct btree_iter *iter, struct bpos end, struct bkey *hole)
|
|
{
|
|
struct bkey_s_c k = bch2_btree_iter_peek_slot(iter);
|
|
|
|
if (bkey_err(k))
|
|
return k;
|
|
|
|
if (k.k->type) {
|
|
return k;
|
|
} else {
|
|
struct btree_iter iter2;
|
|
struct bpos next;
|
|
|
|
bch2_trans_copy_iter(&iter2, iter);
|
|
|
|
struct btree_path *path = btree_iter_path(iter->trans, iter);
|
|
if (!bpos_eq(path->l[0].b->key.k.p, SPOS_MAX))
|
|
end = bkey_min(end, bpos_nosnap_successor(path->l[0].b->key.k.p));
|
|
|
|
end = bkey_min(end, POS(iter->pos.inode, iter->pos.offset + U32_MAX - 1));
|
|
|
|
/*
|
|
* btree node min/max is a closed interval, upto takes a half
|
|
* open interval:
|
|
*/
|
|
k = bch2_btree_iter_peek_upto(&iter2, end);
|
|
next = iter2.pos;
|
|
bch2_trans_iter_exit(iter->trans, &iter2);
|
|
|
|
BUG_ON(next.offset >= iter->pos.offset + U32_MAX);
|
|
|
|
if (bkey_err(k))
|
|
return k;
|
|
|
|
bkey_init(hole);
|
|
hole->p = iter->pos;
|
|
|
|
bch2_key_resize(hole, next.offset - iter->pos.offset);
|
|
return (struct bkey_s_c) { hole, NULL };
|
|
}
|
|
}
|
|
|
|
static bool next_bucket(struct bch_fs *c, struct bch_dev **ca, struct bpos *bucket)
|
|
{
|
|
if (*ca) {
|
|
if (bucket->offset < (*ca)->mi.first_bucket)
|
|
bucket->offset = (*ca)->mi.first_bucket;
|
|
|
|
if (bucket->offset < (*ca)->mi.nbuckets)
|
|
return true;
|
|
|
|
bch2_dev_put(*ca);
|
|
*ca = NULL;
|
|
bucket->inode++;
|
|
bucket->offset = 0;
|
|
}
|
|
|
|
rcu_read_lock();
|
|
*ca = __bch2_next_dev_idx(c, bucket->inode, NULL);
|
|
if (*ca) {
|
|
*bucket = POS((*ca)->dev_idx, (*ca)->mi.first_bucket);
|
|
bch2_dev_get(*ca);
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return *ca != NULL;
|
|
}
|
|
|
|
static struct bkey_s_c bch2_get_key_or_real_bucket_hole(struct btree_iter *iter,
|
|
struct bch_dev **ca, struct bkey *hole)
|
|
{
|
|
struct bch_fs *c = iter->trans->c;
|
|
struct bkey_s_c k;
|
|
again:
|
|
k = bch2_get_key_or_hole(iter, POS_MAX, hole);
|
|
if (bkey_err(k))
|
|
return k;
|
|
|
|
*ca = bch2_dev_iterate_noerror(c, *ca, k.k->p.inode);
|
|
|
|
if (!k.k->type) {
|
|
struct bpos hole_start = bkey_start_pos(k.k);
|
|
|
|
if (!*ca || !bucket_valid(*ca, hole_start.offset)) {
|
|
if (!next_bucket(c, ca, &hole_start))
|
|
return bkey_s_c_null;
|
|
|
|
bch2_btree_iter_set_pos(iter, hole_start);
|
|
goto again;
|
|
}
|
|
|
|
if (k.k->p.offset > (*ca)->mi.nbuckets)
|
|
bch2_key_resize(hole, (*ca)->mi.nbuckets - hole_start.offset);
|
|
}
|
|
|
|
return k;
|
|
}
|
|
|
|
static noinline_for_stack
|
|
int bch2_check_alloc_key(struct btree_trans *trans,
|
|
struct bkey_s_c alloc_k,
|
|
struct btree_iter *alloc_iter,
|
|
struct btree_iter *discard_iter,
|
|
struct btree_iter *freespace_iter,
|
|
struct btree_iter *bucket_gens_iter)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct bch_alloc_v4 a_convert;
|
|
const struct bch_alloc_v4 *a;
|
|
unsigned discard_key_type, freespace_key_type;
|
|
unsigned gens_offset;
|
|
struct bkey_s_c k;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret = 0;
|
|
|
|
struct bch_dev *ca = bch2_dev_bucket_tryget_noerror(c, alloc_k.k->p);
|
|
if (fsck_err_on(!ca,
|
|
trans, alloc_key_to_missing_dev_bucket,
|
|
"alloc key for invalid device:bucket %llu:%llu",
|
|
alloc_k.k->p.inode, alloc_k.k->p.offset))
|
|
ret = bch2_btree_delete_at(trans, alloc_iter, 0);
|
|
if (!ca)
|
|
return ret;
|
|
|
|
if (!ca->mi.freespace_initialized)
|
|
goto out;
|
|
|
|
a = bch2_alloc_to_v4(alloc_k, &a_convert);
|
|
|
|
discard_key_type = a->data_type == BCH_DATA_need_discard ? KEY_TYPE_set : 0;
|
|
bch2_btree_iter_set_pos(discard_iter, alloc_k.k->p);
|
|
k = bch2_btree_iter_peek_slot(discard_iter);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (fsck_err_on(k.k->type != discard_key_type,
|
|
trans, need_discard_key_wrong,
|
|
"incorrect key in need_discard btree (got %s should be %s)\n"
|
|
" %s",
|
|
bch2_bkey_types[k.k->type],
|
|
bch2_bkey_types[discard_key_type],
|
|
(bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf))) {
|
|
struct bkey_i *update =
|
|
bch2_trans_kmalloc(trans, sizeof(*update));
|
|
|
|
ret = PTR_ERR_OR_ZERO(update);
|
|
if (ret)
|
|
goto err;
|
|
|
|
bkey_init(&update->k);
|
|
update->k.type = discard_key_type;
|
|
update->k.p = discard_iter->pos;
|
|
|
|
ret = bch2_trans_update(trans, discard_iter, update, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
freespace_key_type = a->data_type == BCH_DATA_free ? KEY_TYPE_set : 0;
|
|
bch2_btree_iter_set_pos(freespace_iter, alloc_freespace_pos(alloc_k.k->p, *a));
|
|
k = bch2_btree_iter_peek_slot(freespace_iter);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (fsck_err_on(k.k->type != freespace_key_type,
|
|
trans, freespace_key_wrong,
|
|
"incorrect key in freespace btree (got %s should be %s)\n"
|
|
" %s",
|
|
bch2_bkey_types[k.k->type],
|
|
bch2_bkey_types[freespace_key_type],
|
|
(printbuf_reset(&buf),
|
|
bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf))) {
|
|
struct bkey_i *update =
|
|
bch2_trans_kmalloc(trans, sizeof(*update));
|
|
|
|
ret = PTR_ERR_OR_ZERO(update);
|
|
if (ret)
|
|
goto err;
|
|
|
|
bkey_init(&update->k);
|
|
update->k.type = freespace_key_type;
|
|
update->k.p = freespace_iter->pos;
|
|
bch2_key_resize(&update->k, 1);
|
|
|
|
ret = bch2_trans_update(trans, freespace_iter, update, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
bch2_btree_iter_set_pos(bucket_gens_iter, alloc_gens_pos(alloc_k.k->p, &gens_offset));
|
|
k = bch2_btree_iter_peek_slot(bucket_gens_iter);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (fsck_err_on(a->gen != alloc_gen(k, gens_offset),
|
|
trans, bucket_gens_key_wrong,
|
|
"incorrect gen in bucket_gens btree (got %u should be %u)\n"
|
|
" %s",
|
|
alloc_gen(k, gens_offset), a->gen,
|
|
(printbuf_reset(&buf),
|
|
bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf))) {
|
|
struct bkey_i_bucket_gens *g =
|
|
bch2_trans_kmalloc(trans, sizeof(*g));
|
|
|
|
ret = PTR_ERR_OR_ZERO(g);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (k.k->type == KEY_TYPE_bucket_gens) {
|
|
bkey_reassemble(&g->k_i, k);
|
|
} else {
|
|
bkey_bucket_gens_init(&g->k_i);
|
|
g->k.p = alloc_gens_pos(alloc_k.k->p, &gens_offset);
|
|
}
|
|
|
|
g->v.gens[gens_offset] = a->gen;
|
|
|
|
ret = bch2_trans_update(trans, bucket_gens_iter, &g->k_i, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
out:
|
|
err:
|
|
fsck_err:
|
|
bch2_dev_put(ca);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack
|
|
int bch2_check_alloc_hole_freespace(struct btree_trans *trans,
|
|
struct bch_dev *ca,
|
|
struct bpos start,
|
|
struct bpos *end,
|
|
struct btree_iter *freespace_iter)
|
|
{
|
|
struct bkey_s_c k;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret;
|
|
|
|
if (!ca->mi.freespace_initialized)
|
|
return 0;
|
|
|
|
bch2_btree_iter_set_pos(freespace_iter, start);
|
|
|
|
k = bch2_btree_iter_peek_slot(freespace_iter);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
*end = bkey_min(k.k->p, *end);
|
|
|
|
if (fsck_err_on(k.k->type != KEY_TYPE_set,
|
|
trans, freespace_hole_missing,
|
|
"hole in alloc btree missing in freespace btree\n"
|
|
" device %llu buckets %llu-%llu",
|
|
freespace_iter->pos.inode,
|
|
freespace_iter->pos.offset,
|
|
end->offset)) {
|
|
struct bkey_i *update =
|
|
bch2_trans_kmalloc(trans, sizeof(*update));
|
|
|
|
ret = PTR_ERR_OR_ZERO(update);
|
|
if (ret)
|
|
goto err;
|
|
|
|
bkey_init(&update->k);
|
|
update->k.type = KEY_TYPE_set;
|
|
update->k.p = freespace_iter->pos;
|
|
bch2_key_resize(&update->k,
|
|
min_t(u64, U32_MAX, end->offset -
|
|
freespace_iter->pos.offset));
|
|
|
|
ret = bch2_trans_update(trans, freespace_iter, update, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
err:
|
|
fsck_err:
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack
|
|
int bch2_check_alloc_hole_bucket_gens(struct btree_trans *trans,
|
|
struct bpos start,
|
|
struct bpos *end,
|
|
struct btree_iter *bucket_gens_iter)
|
|
{
|
|
struct bkey_s_c k;
|
|
struct printbuf buf = PRINTBUF;
|
|
unsigned i, gens_offset, gens_end_offset;
|
|
int ret;
|
|
|
|
bch2_btree_iter_set_pos(bucket_gens_iter, alloc_gens_pos(start, &gens_offset));
|
|
|
|
k = bch2_btree_iter_peek_slot(bucket_gens_iter);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (bkey_cmp(alloc_gens_pos(start, &gens_offset),
|
|
alloc_gens_pos(*end, &gens_end_offset)))
|
|
gens_end_offset = KEY_TYPE_BUCKET_GENS_NR;
|
|
|
|
if (k.k->type == KEY_TYPE_bucket_gens) {
|
|
struct bkey_i_bucket_gens g;
|
|
bool need_update = false;
|
|
|
|
bkey_reassemble(&g.k_i, k);
|
|
|
|
for (i = gens_offset; i < gens_end_offset; i++) {
|
|
if (fsck_err_on(g.v.gens[i], trans,
|
|
bucket_gens_hole_wrong,
|
|
"hole in alloc btree at %llu:%llu with nonzero gen in bucket_gens btree (%u)",
|
|
bucket_gens_pos_to_alloc(k.k->p, i).inode,
|
|
bucket_gens_pos_to_alloc(k.k->p, i).offset,
|
|
g.v.gens[i])) {
|
|
g.v.gens[i] = 0;
|
|
need_update = true;
|
|
}
|
|
}
|
|
|
|
if (need_update) {
|
|
struct bkey_i *u = bch2_trans_kmalloc(trans, sizeof(g));
|
|
|
|
ret = PTR_ERR_OR_ZERO(u);
|
|
if (ret)
|
|
goto err;
|
|
|
|
memcpy(u, &g, sizeof(g));
|
|
|
|
ret = bch2_trans_update(trans, bucket_gens_iter, u, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
*end = bkey_min(*end, bucket_gens_pos_to_alloc(bpos_nosnap_successor(k.k->p), 0));
|
|
err:
|
|
fsck_err:
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int bch2_check_discard_freespace_key(struct btree_trans *trans,
|
|
struct btree_iter *iter)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct btree_iter alloc_iter;
|
|
struct bkey_s_c alloc_k;
|
|
struct bch_alloc_v4 a_convert;
|
|
const struct bch_alloc_v4 *a;
|
|
u64 genbits;
|
|
struct bpos pos;
|
|
enum bch_data_type state = iter->btree_id == BTREE_ID_need_discard
|
|
? BCH_DATA_need_discard
|
|
: BCH_DATA_free;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret;
|
|
|
|
pos = iter->pos;
|
|
pos.offset &= ~(~0ULL << 56);
|
|
genbits = iter->pos.offset & (~0ULL << 56);
|
|
|
|
alloc_k = bch2_bkey_get_iter(trans, &alloc_iter, BTREE_ID_alloc, pos, 0);
|
|
ret = bkey_err(alloc_k);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (fsck_err_on(!bch2_dev_bucket_exists(c, pos),
|
|
trans, need_discard_freespace_key_to_invalid_dev_bucket,
|
|
"entry in %s btree for nonexistant dev:bucket %llu:%llu",
|
|
bch2_btree_id_str(iter->btree_id), pos.inode, pos.offset))
|
|
goto delete;
|
|
|
|
a = bch2_alloc_to_v4(alloc_k, &a_convert);
|
|
|
|
if (fsck_err_on(a->data_type != state ||
|
|
(state == BCH_DATA_free &&
|
|
genbits != alloc_freespace_genbits(*a)),
|
|
trans, need_discard_freespace_key_bad,
|
|
"%s\n incorrectly set at %s:%llu:%llu:0 (free %u, genbits %llu should be %llu)",
|
|
(bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf),
|
|
bch2_btree_id_str(iter->btree_id),
|
|
iter->pos.inode,
|
|
iter->pos.offset,
|
|
a->data_type == state,
|
|
genbits >> 56, alloc_freespace_genbits(*a) >> 56))
|
|
goto delete;
|
|
out:
|
|
fsck_err:
|
|
bch2_set_btree_iter_dontneed(&alloc_iter);
|
|
bch2_trans_iter_exit(trans, &alloc_iter);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
delete:
|
|
ret = bch2_btree_delete_extent_at(trans, iter,
|
|
iter->btree_id == BTREE_ID_freespace ? 1 : 0, 0) ?:
|
|
bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* We've already checked that generation numbers in the bucket_gens btree are
|
|
* valid for buckets that exist; this just checks for keys for nonexistent
|
|
* buckets.
|
|
*/
|
|
static noinline_for_stack
|
|
int bch2_check_bucket_gens_key(struct btree_trans *trans,
|
|
struct btree_iter *iter,
|
|
struct bkey_s_c k)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct bkey_i_bucket_gens g;
|
|
u64 start = bucket_gens_pos_to_alloc(k.k->p, 0).offset;
|
|
u64 end = bucket_gens_pos_to_alloc(bpos_nosnap_successor(k.k->p), 0).offset;
|
|
u64 b;
|
|
bool need_update = false;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret = 0;
|
|
|
|
BUG_ON(k.k->type != KEY_TYPE_bucket_gens);
|
|
bkey_reassemble(&g.k_i, k);
|
|
|
|
struct bch_dev *ca = bch2_dev_tryget_noerror(c, k.k->p.inode);
|
|
if (!ca) {
|
|
if (fsck_err(trans, bucket_gens_to_invalid_dev,
|
|
"bucket_gens key for invalid device:\n %s",
|
|
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
|
|
ret = bch2_btree_delete_at(trans, iter, 0);
|
|
goto out;
|
|
}
|
|
|
|
if (fsck_err_on(end <= ca->mi.first_bucket ||
|
|
start >= ca->mi.nbuckets,
|
|
trans, bucket_gens_to_invalid_buckets,
|
|
"bucket_gens key for invalid buckets:\n %s",
|
|
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
|
|
ret = bch2_btree_delete_at(trans, iter, 0);
|
|
goto out;
|
|
}
|
|
|
|
for (b = start; b < ca->mi.first_bucket; b++)
|
|
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK],
|
|
trans, bucket_gens_nonzero_for_invalid_buckets,
|
|
"bucket_gens key has nonzero gen for invalid bucket")) {
|
|
g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK] = 0;
|
|
need_update = true;
|
|
}
|
|
|
|
for (b = ca->mi.nbuckets; b < end; b++)
|
|
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK],
|
|
trans, bucket_gens_nonzero_for_invalid_buckets,
|
|
"bucket_gens key has nonzero gen for invalid bucket")) {
|
|
g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK] = 0;
|
|
need_update = true;
|
|
}
|
|
|
|
if (need_update) {
|
|
struct bkey_i *u = bch2_trans_kmalloc(trans, sizeof(g));
|
|
|
|
ret = PTR_ERR_OR_ZERO(u);
|
|
if (ret)
|
|
goto out;
|
|
|
|
memcpy(u, &g, sizeof(g));
|
|
ret = bch2_trans_update(trans, iter, u, 0);
|
|
}
|
|
out:
|
|
fsck_err:
|
|
bch2_dev_put(ca);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
int bch2_check_alloc_info(struct bch_fs *c)
|
|
{
|
|
struct btree_trans *trans = bch2_trans_get(c);
|
|
struct btree_iter iter, discard_iter, freespace_iter, bucket_gens_iter;
|
|
struct bch_dev *ca = NULL;
|
|
struct bkey hole;
|
|
struct bkey_s_c k;
|
|
int ret = 0;
|
|
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_alloc, POS_MIN,
|
|
BTREE_ITER_prefetch);
|
|
bch2_trans_iter_init(trans, &discard_iter, BTREE_ID_need_discard, POS_MIN,
|
|
BTREE_ITER_prefetch);
|
|
bch2_trans_iter_init(trans, &freespace_iter, BTREE_ID_freespace, POS_MIN,
|
|
BTREE_ITER_prefetch);
|
|
bch2_trans_iter_init(trans, &bucket_gens_iter, BTREE_ID_bucket_gens, POS_MIN,
|
|
BTREE_ITER_prefetch);
|
|
|
|
while (1) {
|
|
struct bpos next;
|
|
|
|
bch2_trans_begin(trans);
|
|
|
|
k = bch2_get_key_or_real_bucket_hole(&iter, &ca, &hole);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
if (!k.k)
|
|
break;
|
|
|
|
if (k.k->type) {
|
|
next = bpos_nosnap_successor(k.k->p);
|
|
|
|
ret = bch2_check_alloc_key(trans,
|
|
k, &iter,
|
|
&discard_iter,
|
|
&freespace_iter,
|
|
&bucket_gens_iter);
|
|
if (ret)
|
|
goto bkey_err;
|
|
} else {
|
|
next = k.k->p;
|
|
|
|
ret = bch2_check_alloc_hole_freespace(trans, ca,
|
|
bkey_start_pos(k.k),
|
|
&next,
|
|
&freespace_iter) ?:
|
|
bch2_check_alloc_hole_bucket_gens(trans,
|
|
bkey_start_pos(k.k),
|
|
&next,
|
|
&bucket_gens_iter);
|
|
if (ret)
|
|
goto bkey_err;
|
|
}
|
|
|
|
ret = bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
bch2_btree_iter_set_pos(&iter, next);
|
|
bkey_err:
|
|
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
|
|
continue;
|
|
if (ret)
|
|
break;
|
|
}
|
|
bch2_trans_iter_exit(trans, &bucket_gens_iter);
|
|
bch2_trans_iter_exit(trans, &freespace_iter);
|
|
bch2_trans_iter_exit(trans, &discard_iter);
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
bch2_dev_put(ca);
|
|
ca = NULL;
|
|
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = for_each_btree_key(trans, iter,
|
|
BTREE_ID_need_discard, POS_MIN,
|
|
BTREE_ITER_prefetch, k,
|
|
bch2_check_discard_freespace_key(trans, &iter));
|
|
if (ret)
|
|
goto err;
|
|
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_freespace, POS_MIN,
|
|
BTREE_ITER_prefetch);
|
|
while (1) {
|
|
bch2_trans_begin(trans);
|
|
k = bch2_btree_iter_peek(&iter);
|
|
if (!k.k)
|
|
break;
|
|
|
|
ret = bkey_err(k) ?:
|
|
bch2_check_discard_freespace_key(trans, &iter);
|
|
if (bch2_err_matches(ret, BCH_ERR_transaction_restart)) {
|
|
ret = 0;
|
|
continue;
|
|
}
|
|
if (ret) {
|
|
struct printbuf buf = PRINTBUF;
|
|
bch2_bkey_val_to_text(&buf, c, k);
|
|
|
|
bch_err(c, "while checking %s", buf.buf);
|
|
printbuf_exit(&buf);
|
|
break;
|
|
}
|
|
|
|
bch2_btree_iter_set_pos(&iter, bpos_nosnap_successor(iter.pos));
|
|
}
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = for_each_btree_key_commit(trans, iter,
|
|
BTREE_ID_bucket_gens, POS_MIN,
|
|
BTREE_ITER_prefetch, k,
|
|
NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
|
|
bch2_check_bucket_gens_key(trans, &iter, k));
|
|
err:
|
|
bch2_trans_put(trans);
|
|
bch_err_fn(c, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int bch2_check_alloc_to_lru_ref(struct btree_trans *trans,
|
|
struct btree_iter *alloc_iter,
|
|
struct bkey_buf *last_flushed)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct bch_alloc_v4 a_convert;
|
|
const struct bch_alloc_v4 *a;
|
|
struct bkey_s_c alloc_k;
|
|
struct printbuf buf = PRINTBUF;
|
|
int ret;
|
|
|
|
alloc_k = bch2_btree_iter_peek(alloc_iter);
|
|
if (!alloc_k.k)
|
|
return 0;
|
|
|
|
ret = bkey_err(alloc_k);
|
|
if (ret)
|
|
return ret;
|
|
|
|
struct bch_dev *ca = bch2_dev_tryget_noerror(c, alloc_k.k->p.inode);
|
|
if (!ca)
|
|
return 0;
|
|
|
|
a = bch2_alloc_to_v4(alloc_k, &a_convert);
|
|
|
|
u64 lru_idx = alloc_lru_idx_fragmentation(*a, ca);
|
|
if (lru_idx) {
|
|
ret = bch2_lru_check_set(trans, BCH_LRU_FRAGMENTATION_START,
|
|
lru_idx, alloc_k, last_flushed);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if (a->data_type != BCH_DATA_cached)
|
|
goto err;
|
|
|
|
if (fsck_err_on(!a->io_time[READ],
|
|
trans, alloc_key_cached_but_read_time_zero,
|
|
"cached bucket with read_time 0\n"
|
|
" %s",
|
|
(printbuf_reset(&buf),
|
|
bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf))) {
|
|
struct bkey_i_alloc_v4 *a_mut =
|
|
bch2_alloc_to_v4_mut(trans, alloc_k);
|
|
ret = PTR_ERR_OR_ZERO(a_mut);
|
|
if (ret)
|
|
goto err;
|
|
|
|
a_mut->v.io_time[READ] = bch2_current_io_time(c, READ);
|
|
ret = bch2_trans_update(trans, alloc_iter,
|
|
&a_mut->k_i, BTREE_TRIGGER_norun);
|
|
if (ret)
|
|
goto err;
|
|
|
|
a = &a_mut->v;
|
|
}
|
|
|
|
ret = bch2_lru_check_set(trans, alloc_k.k->p.inode, a->io_time[READ],
|
|
alloc_k, last_flushed);
|
|
if (ret)
|
|
goto err;
|
|
err:
|
|
fsck_err:
|
|
bch2_dev_put(ca);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
int bch2_check_alloc_to_lru_refs(struct bch_fs *c)
|
|
{
|
|
struct bkey_buf last_flushed;
|
|
|
|
bch2_bkey_buf_init(&last_flushed);
|
|
bkey_init(&last_flushed.k->k);
|
|
|
|
int ret = bch2_trans_run(c,
|
|
for_each_btree_key_commit(trans, iter, BTREE_ID_alloc,
|
|
POS_MIN, BTREE_ITER_prefetch, k,
|
|
NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
|
|
bch2_check_alloc_to_lru_ref(trans, &iter, &last_flushed)));
|
|
|
|
bch2_bkey_buf_exit(&last_flushed, c);
|
|
bch_err_fn(c, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int discard_in_flight_add(struct bch_dev *ca, u64 bucket, bool in_progress)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&ca->discard_buckets_in_flight_lock);
|
|
darray_for_each(ca->discard_buckets_in_flight, i)
|
|
if (i->bucket == bucket) {
|
|
ret = -BCH_ERR_EEXIST_discard_in_flight_add;
|
|
goto out;
|
|
}
|
|
|
|
ret = darray_push(&ca->discard_buckets_in_flight, ((struct discard_in_flight) {
|
|
.in_progress = in_progress,
|
|
.bucket = bucket,
|
|
}));
|
|
out:
|
|
mutex_unlock(&ca->discard_buckets_in_flight_lock);
|
|
return ret;
|
|
}
|
|
|
|
static void discard_in_flight_remove(struct bch_dev *ca, u64 bucket)
|
|
{
|
|
mutex_lock(&ca->discard_buckets_in_flight_lock);
|
|
darray_for_each(ca->discard_buckets_in_flight, i)
|
|
if (i->bucket == bucket) {
|
|
BUG_ON(!i->in_progress);
|
|
darray_remove_item(&ca->discard_buckets_in_flight, i);
|
|
goto found;
|
|
}
|
|
BUG();
|
|
found:
|
|
mutex_unlock(&ca->discard_buckets_in_flight_lock);
|
|
}
|
|
|
|
struct discard_buckets_state {
|
|
u64 seen;
|
|
u64 open;
|
|
u64 need_journal_commit;
|
|
u64 discarded;
|
|
u64 need_journal_commit_this_dev;
|
|
};
|
|
|
|
static int bch2_discard_one_bucket(struct btree_trans *trans,
|
|
struct bch_dev *ca,
|
|
struct btree_iter *need_discard_iter,
|
|
struct bpos *discard_pos_done,
|
|
struct discard_buckets_state *s)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct bpos pos = need_discard_iter->pos;
|
|
struct btree_iter iter = { NULL };
|
|
struct bkey_s_c k;
|
|
struct bkey_i_alloc_v4 *a;
|
|
struct printbuf buf = PRINTBUF;
|
|
bool discard_locked = false;
|
|
int ret = 0;
|
|
|
|
if (bch2_bucket_is_open_safe(c, pos.inode, pos.offset)) {
|
|
s->open++;
|
|
goto out;
|
|
}
|
|
|
|
if (bch2_bucket_needs_journal_commit(&c->buckets_waiting_for_journal,
|
|
c->journal.flushed_seq_ondisk,
|
|
pos.inode, pos.offset)) {
|
|
s->need_journal_commit++;
|
|
s->need_journal_commit_this_dev++;
|
|
goto out;
|
|
}
|
|
|
|
k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_alloc,
|
|
need_discard_iter->pos,
|
|
BTREE_ITER_cached);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto out;
|
|
|
|
a = bch2_alloc_to_v4_mut(trans, k);
|
|
ret = PTR_ERR_OR_ZERO(a);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (bch2_bucket_sectors_total(a->v)) {
|
|
if (bch2_trans_inconsistent_on(c->curr_recovery_pass > BCH_RECOVERY_PASS_check_alloc_info,
|
|
trans, "attempting to discard bucket with dirty data\n%s",
|
|
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (a->v.data_type != BCH_DATA_need_discard) {
|
|
if (data_type_is_empty(a->v.data_type) &&
|
|
BCH_ALLOC_V4_NEED_INC_GEN(&a->v)) {
|
|
a->v.gen++;
|
|
SET_BCH_ALLOC_V4_NEED_INC_GEN(&a->v, false);
|
|
goto write;
|
|
}
|
|
|
|
if (bch2_trans_inconsistent_on(c->curr_recovery_pass > BCH_RECOVERY_PASS_check_alloc_info,
|
|
trans, "bucket incorrectly set in need_discard btree\n"
|
|
"%s",
|
|
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (a->v.journal_seq > c->journal.flushed_seq_ondisk) {
|
|
if (bch2_trans_inconsistent_on(c->curr_recovery_pass > BCH_RECOVERY_PASS_check_alloc_info,
|
|
trans, "clearing need_discard but journal_seq %llu > flushed_seq %llu\n%s",
|
|
a->v.journal_seq,
|
|
c->journal.flushed_seq_ondisk,
|
|
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (discard_in_flight_add(ca, iter.pos.offset, true))
|
|
goto out;
|
|
|
|
discard_locked = true;
|
|
|
|
if (!bkey_eq(*discard_pos_done, iter.pos) &&
|
|
ca->mi.discard && !c->opts.nochanges) {
|
|
/*
|
|
* This works without any other locks because this is the only
|
|
* thread that removes items from the need_discard tree
|
|
*/
|
|
bch2_trans_unlock_long(trans);
|
|
blkdev_issue_discard(ca->disk_sb.bdev,
|
|
k.k->p.offset * ca->mi.bucket_size,
|
|
ca->mi.bucket_size,
|
|
GFP_KERNEL);
|
|
*discard_pos_done = iter.pos;
|
|
|
|
ret = bch2_trans_relock_notrace(trans);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
SET_BCH_ALLOC_V4_NEED_DISCARD(&a->v, false);
|
|
write:
|
|
alloc_data_type_set(&a->v, a->v.data_type);
|
|
|
|
ret = bch2_trans_update(trans, &iter, &a->k_i, 0) ?:
|
|
bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_WATERMARK_btree|
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
count_event(c, bucket_discard);
|
|
s->discarded++;
|
|
out:
|
|
if (discard_locked)
|
|
discard_in_flight_remove(ca, iter.pos.offset);
|
|
s->seen++;
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
}
|
|
|
|
static void bch2_do_discards_work(struct work_struct *work)
|
|
{
|
|
struct bch_dev *ca = container_of(work, struct bch_dev, discard_work);
|
|
struct bch_fs *c = ca->fs;
|
|
struct discard_buckets_state s = {};
|
|
struct bpos discard_pos_done = POS_MAX;
|
|
int ret;
|
|
|
|
/*
|
|
* We're doing the commit in bch2_discard_one_bucket instead of using
|
|
* for_each_btree_key_commit() so that we can increment counters after
|
|
* successful commit:
|
|
*/
|
|
ret = bch2_trans_run(c,
|
|
for_each_btree_key_upto(trans, iter,
|
|
BTREE_ID_need_discard,
|
|
POS(ca->dev_idx, 0),
|
|
POS(ca->dev_idx, U64_MAX), 0, k,
|
|
bch2_discard_one_bucket(trans, ca, &iter, &discard_pos_done, &s)));
|
|
|
|
trace_discard_buckets(c, s.seen, s.open, s.need_journal_commit, s.discarded,
|
|
bch2_err_str(ret));
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_discard);
|
|
}
|
|
|
|
void bch2_dev_do_discards(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_discard))
|
|
return;
|
|
|
|
if (!bch2_dev_get_ioref(c, ca->dev_idx, WRITE))
|
|
goto put_write_ref;
|
|
|
|
if (queue_work(c->write_ref_wq, &ca->discard_work))
|
|
return;
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
put_write_ref:
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_discard);
|
|
}
|
|
|
|
void bch2_do_discards(struct bch_fs *c)
|
|
{
|
|
for_each_member_device(c, ca)
|
|
bch2_dev_do_discards(ca);
|
|
}
|
|
|
|
static int bch2_clear_bucket_needs_discard(struct btree_trans *trans, struct bpos bucket)
|
|
{
|
|
struct btree_iter iter;
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_alloc, bucket, BTREE_ITER_intent);
|
|
struct bkey_s_c k = bch2_btree_iter_peek_slot(&iter);
|
|
int ret = bkey_err(k);
|
|
if (ret)
|
|
goto err;
|
|
|
|
struct bkey_i_alloc_v4 *a = bch2_alloc_to_v4_mut(trans, k);
|
|
ret = PTR_ERR_OR_ZERO(a);
|
|
if (ret)
|
|
goto err;
|
|
|
|
BUG_ON(a->v.dirty_sectors);
|
|
SET_BCH_ALLOC_V4_NEED_DISCARD(&a->v, false);
|
|
alloc_data_type_set(&a->v, a->v.data_type);
|
|
|
|
ret = bch2_trans_update(trans, &iter, &a->k_i, 0);
|
|
err:
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
return ret;
|
|
}
|
|
|
|
static void bch2_do_discards_fast_work(struct work_struct *work)
|
|
{
|
|
struct bch_dev *ca = container_of(work, struct bch_dev, discard_fast_work);
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
while (1) {
|
|
bool got_bucket = false;
|
|
u64 bucket;
|
|
|
|
mutex_lock(&ca->discard_buckets_in_flight_lock);
|
|
darray_for_each(ca->discard_buckets_in_flight, i) {
|
|
if (i->in_progress)
|
|
continue;
|
|
|
|
got_bucket = true;
|
|
bucket = i->bucket;
|
|
i->in_progress = true;
|
|
break;
|
|
}
|
|
mutex_unlock(&ca->discard_buckets_in_flight_lock);
|
|
|
|
if (!got_bucket)
|
|
break;
|
|
|
|
if (ca->mi.discard && !c->opts.nochanges)
|
|
blkdev_issue_discard(ca->disk_sb.bdev,
|
|
bucket_to_sector(ca, bucket),
|
|
ca->mi.bucket_size,
|
|
GFP_KERNEL);
|
|
|
|
int ret = bch2_trans_commit_do(c, NULL, NULL,
|
|
BCH_WATERMARK_btree|
|
|
BCH_TRANS_COMMIT_no_enospc,
|
|
bch2_clear_bucket_needs_discard(trans, POS(ca->dev_idx, bucket)));
|
|
bch_err_fn(c, ret);
|
|
|
|
discard_in_flight_remove(ca, bucket);
|
|
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_discard_fast);
|
|
}
|
|
|
|
static void bch2_discard_one_bucket_fast(struct bch_dev *ca, u64 bucket)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
if (discard_in_flight_add(ca, bucket, false))
|
|
return;
|
|
|
|
if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_discard_fast))
|
|
return;
|
|
|
|
if (!bch2_dev_get_ioref(c, ca->dev_idx, WRITE))
|
|
goto put_ref;
|
|
|
|
if (queue_work(c->write_ref_wq, &ca->discard_fast_work))
|
|
return;
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
put_ref:
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_discard_fast);
|
|
}
|
|
|
|
static int invalidate_one_bucket(struct btree_trans *trans,
|
|
struct btree_iter *lru_iter,
|
|
struct bkey_s_c lru_k,
|
|
s64 *nr_to_invalidate)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
struct bkey_i_alloc_v4 *a = NULL;
|
|
struct printbuf buf = PRINTBUF;
|
|
struct bpos bucket = u64_to_bucket(lru_k.k->p.offset);
|
|
unsigned cached_sectors;
|
|
int ret = 0;
|
|
|
|
if (*nr_to_invalidate <= 0)
|
|
return 1;
|
|
|
|
if (!bch2_dev_bucket_exists(c, bucket)) {
|
|
prt_str(&buf, "lru entry points to invalid bucket");
|
|
goto err;
|
|
}
|
|
|
|
if (bch2_bucket_is_open_safe(c, bucket.inode, bucket.offset))
|
|
return 0;
|
|
|
|
a = bch2_trans_start_alloc_update(trans, bucket, BTREE_TRIGGER_bucket_invalidate);
|
|
ret = PTR_ERR_OR_ZERO(a);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* We expect harmless races here due to the btree write buffer: */
|
|
if (lru_pos_time(lru_iter->pos) != alloc_lru_idx_read(a->v))
|
|
goto out;
|
|
|
|
BUG_ON(a->v.data_type != BCH_DATA_cached);
|
|
BUG_ON(a->v.dirty_sectors);
|
|
|
|
if (!a->v.cached_sectors)
|
|
bch_err(c, "invalidating empty bucket, confused");
|
|
|
|
cached_sectors = a->v.cached_sectors;
|
|
|
|
SET_BCH_ALLOC_V4_NEED_INC_GEN(&a->v, false);
|
|
a->v.gen++;
|
|
a->v.data_type = 0;
|
|
a->v.dirty_sectors = 0;
|
|
a->v.stripe_sectors = 0;
|
|
a->v.cached_sectors = 0;
|
|
a->v.io_time[READ] = bch2_current_io_time(c, READ);
|
|
a->v.io_time[WRITE] = bch2_current_io_time(c, WRITE);
|
|
|
|
ret = bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_WATERMARK_btree|
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
trace_and_count(c, bucket_invalidate, c, bucket.inode, bucket.offset, cached_sectors);
|
|
--*nr_to_invalidate;
|
|
out:
|
|
printbuf_exit(&buf);
|
|
return ret;
|
|
err:
|
|
prt_str(&buf, "\n lru key: ");
|
|
bch2_bkey_val_to_text(&buf, c, lru_k);
|
|
|
|
prt_str(&buf, "\n lru entry: ");
|
|
bch2_lru_pos_to_text(&buf, lru_iter->pos);
|
|
|
|
prt_str(&buf, "\n alloc key: ");
|
|
if (!a)
|
|
bch2_bpos_to_text(&buf, bucket);
|
|
else
|
|
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&a->k_i));
|
|
|
|
bch_err(c, "%s", buf.buf);
|
|
if (c->curr_recovery_pass > BCH_RECOVERY_PASS_check_lrus) {
|
|
bch2_inconsistent_error(c);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
static struct bkey_s_c next_lru_key(struct btree_trans *trans, struct btree_iter *iter,
|
|
struct bch_dev *ca, bool *wrapped)
|
|
{
|
|
struct bkey_s_c k;
|
|
again:
|
|
k = bch2_btree_iter_peek_upto(iter, lru_pos(ca->dev_idx, U64_MAX, LRU_TIME_MAX));
|
|
if (!k.k && !*wrapped) {
|
|
bch2_btree_iter_set_pos(iter, lru_pos(ca->dev_idx, 0, 0));
|
|
*wrapped = true;
|
|
goto again;
|
|
}
|
|
|
|
return k;
|
|
}
|
|
|
|
static void bch2_do_invalidates_work(struct work_struct *work)
|
|
{
|
|
struct bch_dev *ca = container_of(work, struct bch_dev, invalidate_work);
|
|
struct bch_fs *c = ca->fs;
|
|
struct btree_trans *trans = bch2_trans_get(c);
|
|
int ret = 0;
|
|
|
|
ret = bch2_btree_write_buffer_tryflush(trans);
|
|
if (ret)
|
|
goto err;
|
|
|
|
s64 nr_to_invalidate =
|
|
should_invalidate_buckets(ca, bch2_dev_usage_read(ca));
|
|
struct btree_iter iter;
|
|
bool wrapped = false;
|
|
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_lru,
|
|
lru_pos(ca->dev_idx, 0,
|
|
((bch2_current_io_time(c, READ) + U32_MAX) &
|
|
LRU_TIME_MAX)), 0);
|
|
|
|
while (true) {
|
|
bch2_trans_begin(trans);
|
|
|
|
struct bkey_s_c k = next_lru_key(trans, &iter, ca, &wrapped);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto restart_err;
|
|
if (!k.k)
|
|
break;
|
|
|
|
ret = invalidate_one_bucket(trans, &iter, k, &nr_to_invalidate);
|
|
restart_err:
|
|
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
|
|
continue;
|
|
if (ret)
|
|
break;
|
|
|
|
bch2_btree_iter_advance(&iter);
|
|
}
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
err:
|
|
bch2_trans_put(trans);
|
|
percpu_ref_put(&ca->io_ref);
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_invalidate);
|
|
}
|
|
|
|
void bch2_dev_do_invalidates(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_invalidate))
|
|
return;
|
|
|
|
if (!bch2_dev_get_ioref(c, ca->dev_idx, WRITE))
|
|
goto put_ref;
|
|
|
|
if (queue_work(c->write_ref_wq, &ca->invalidate_work))
|
|
return;
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
put_ref:
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_invalidate);
|
|
}
|
|
|
|
void bch2_do_invalidates(struct bch_fs *c)
|
|
{
|
|
for_each_member_device(c, ca)
|
|
bch2_dev_do_invalidates(ca);
|
|
}
|
|
|
|
int bch2_dev_freespace_init(struct bch_fs *c, struct bch_dev *ca,
|
|
u64 bucket_start, u64 bucket_end)
|
|
{
|
|
struct btree_trans *trans = bch2_trans_get(c);
|
|
struct btree_iter iter;
|
|
struct bkey_s_c k;
|
|
struct bkey hole;
|
|
struct bpos end = POS(ca->dev_idx, bucket_end);
|
|
struct bch_member *m;
|
|
unsigned long last_updated = jiffies;
|
|
int ret;
|
|
|
|
BUG_ON(bucket_start > bucket_end);
|
|
BUG_ON(bucket_end > ca->mi.nbuckets);
|
|
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_alloc,
|
|
POS(ca->dev_idx, max_t(u64, ca->mi.first_bucket, bucket_start)),
|
|
BTREE_ITER_prefetch);
|
|
/*
|
|
* Scan the alloc btree for every bucket on @ca, and add buckets to the
|
|
* freespace/need_discard/need_gc_gens btrees as needed:
|
|
*/
|
|
while (1) {
|
|
if (time_after(jiffies, last_updated + HZ * 10)) {
|
|
bch_info(ca, "%s: currently at %llu/%llu",
|
|
__func__, iter.pos.offset, ca->mi.nbuckets);
|
|
last_updated = jiffies;
|
|
}
|
|
|
|
bch2_trans_begin(trans);
|
|
|
|
if (bkey_ge(iter.pos, end)) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
k = bch2_get_key_or_hole(&iter, end, &hole);
|
|
ret = bkey_err(k);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
if (k.k->type) {
|
|
/*
|
|
* We process live keys in the alloc btree one at a
|
|
* time:
|
|
*/
|
|
struct bch_alloc_v4 a_convert;
|
|
const struct bch_alloc_v4 *a = bch2_alloc_to_v4(k, &a_convert);
|
|
|
|
ret = bch2_bucket_do_index(trans, ca, k, a, true) ?:
|
|
bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
bch2_btree_iter_advance(&iter);
|
|
} else {
|
|
struct bkey_i *freespace;
|
|
|
|
freespace = bch2_trans_kmalloc(trans, sizeof(*freespace));
|
|
ret = PTR_ERR_OR_ZERO(freespace);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
bkey_init(&freespace->k);
|
|
freespace->k.type = KEY_TYPE_set;
|
|
freespace->k.p = k.k->p;
|
|
freespace->k.size = k.k->size;
|
|
|
|
ret = bch2_btree_insert_trans(trans, BTREE_ID_freespace, freespace, 0) ?:
|
|
bch2_trans_commit(trans, NULL, NULL,
|
|
BCH_TRANS_COMMIT_no_enospc);
|
|
if (ret)
|
|
goto bkey_err;
|
|
|
|
bch2_btree_iter_set_pos(&iter, k.k->p);
|
|
}
|
|
bkey_err:
|
|
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
|
|
continue;
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
bch2_trans_put(trans);
|
|
|
|
if (ret < 0) {
|
|
bch_err_msg(ca, ret, "initializing free space");
|
|
return ret;
|
|
}
|
|
|
|
mutex_lock(&c->sb_lock);
|
|
m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx);
|
|
SET_BCH_MEMBER_FREESPACE_INITIALIZED(m, true);
|
|
mutex_unlock(&c->sb_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bch2_fs_freespace_init(struct bch_fs *c)
|
|
{
|
|
int ret = 0;
|
|
bool doing_init = false;
|
|
|
|
/*
|
|
* We can crash during the device add path, so we need to check this on
|
|
* every mount:
|
|
*/
|
|
|
|
for_each_member_device(c, ca) {
|
|
if (ca->mi.freespace_initialized)
|
|
continue;
|
|
|
|
if (!doing_init) {
|
|
bch_info(c, "initializing freespace");
|
|
doing_init = true;
|
|
}
|
|
|
|
ret = bch2_dev_freespace_init(c, ca, 0, ca->mi.nbuckets);
|
|
if (ret) {
|
|
bch2_dev_put(ca);
|
|
bch_err_fn(c, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (doing_init) {
|
|
mutex_lock(&c->sb_lock);
|
|
bch2_write_super(c);
|
|
mutex_unlock(&c->sb_lock);
|
|
bch_verbose(c, "done initializing freespace");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* device removal */
|
|
|
|
int bch2_dev_remove_alloc(struct bch_fs *c, struct bch_dev *ca)
|
|
{
|
|
struct bpos start = POS(ca->dev_idx, 0);
|
|
struct bpos end = POS(ca->dev_idx, U64_MAX);
|
|
int ret;
|
|
|
|
/*
|
|
* We clear the LRU and need_discard btrees first so that we don't race
|
|
* with bch2_do_invalidates() and bch2_do_discards()
|
|
*/
|
|
ret = bch2_dev_remove_stripes(c, ca->dev_idx) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_lru, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_need_discard, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_freespace, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_backpointers, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_bucket_gens, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_btree_delete_range(c, BTREE_ID_alloc, start, end,
|
|
BTREE_TRIGGER_norun, NULL) ?:
|
|
bch2_dev_usage_remove(c, ca->dev_idx);
|
|
bch_err_msg(ca, ret, "removing dev alloc info");
|
|
return ret;
|
|
}
|
|
|
|
/* Bucket IO clocks: */
|
|
|
|
static int __bch2_bucket_io_time_reset(struct btree_trans *trans, unsigned dev,
|
|
size_t bucket_nr, int rw)
|
|
{
|
|
struct bch_fs *c = trans->c;
|
|
|
|
struct btree_iter iter;
|
|
struct bkey_i_alloc_v4 *a =
|
|
bch2_trans_start_alloc_update_noupdate(trans, &iter, POS(dev, bucket_nr));
|
|
int ret = PTR_ERR_OR_ZERO(a);
|
|
if (ret)
|
|
return ret;
|
|
|
|
u64 now = bch2_current_io_time(c, rw);
|
|
if (a->v.io_time[rw] == now)
|
|
goto out;
|
|
|
|
a->v.io_time[rw] = now;
|
|
|
|
ret = bch2_trans_update(trans, &iter, &a->k_i, 0) ?:
|
|
bch2_trans_commit(trans, NULL, NULL, 0);
|
|
out:
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
return ret;
|
|
}
|
|
|
|
int bch2_bucket_io_time_reset(struct btree_trans *trans, unsigned dev,
|
|
size_t bucket_nr, int rw)
|
|
{
|
|
if (bch2_trans_relock(trans))
|
|
bch2_trans_begin(trans);
|
|
|
|
return nested_lockrestart_do(trans, __bch2_bucket_io_time_reset(trans, dev, bucket_nr, rw));
|
|
}
|
|
|
|
/* Startup/shutdown (ro/rw): */
|
|
|
|
void bch2_recalc_capacity(struct bch_fs *c)
|
|
{
|
|
u64 capacity = 0, reserved_sectors = 0, gc_reserve;
|
|
unsigned bucket_size_max = 0;
|
|
unsigned long ra_pages = 0;
|
|
|
|
lockdep_assert_held(&c->state_lock);
|
|
|
|
for_each_online_member(c, ca) {
|
|
struct backing_dev_info *bdi = ca->disk_sb.bdev->bd_disk->bdi;
|
|
|
|
ra_pages += bdi->ra_pages;
|
|
}
|
|
|
|
bch2_set_ra_pages(c, ra_pages);
|
|
|
|
for_each_rw_member(c, ca) {
|
|
u64 dev_reserve = 0;
|
|
|
|
/*
|
|
* We need to reserve buckets (from the number
|
|
* of currently available buckets) against
|
|
* foreground writes so that mainly copygc can
|
|
* make forward progress.
|
|
*
|
|
* We need enough to refill the various reserves
|
|
* from scratch - copygc will use its entire
|
|
* reserve all at once, then run against when
|
|
* its reserve is refilled (from the formerly
|
|
* available buckets).
|
|
*
|
|
* This reserve is just used when considering if
|
|
* allocations for foreground writes must wait -
|
|
* not -ENOSPC calculations.
|
|
*/
|
|
|
|
dev_reserve += ca->nr_btree_reserve * 2;
|
|
dev_reserve += ca->mi.nbuckets >> 6; /* copygc reserve */
|
|
|
|
dev_reserve += 1; /* btree write point */
|
|
dev_reserve += 1; /* copygc write point */
|
|
dev_reserve += 1; /* rebalance write point */
|
|
|
|
dev_reserve *= ca->mi.bucket_size;
|
|
|
|
capacity += bucket_to_sector(ca, ca->mi.nbuckets -
|
|
ca->mi.first_bucket);
|
|
|
|
reserved_sectors += dev_reserve * 2;
|
|
|
|
bucket_size_max = max_t(unsigned, bucket_size_max,
|
|
ca->mi.bucket_size);
|
|
}
|
|
|
|
gc_reserve = c->opts.gc_reserve_bytes
|
|
? c->opts.gc_reserve_bytes >> 9
|
|
: div64_u64(capacity * c->opts.gc_reserve_percent, 100);
|
|
|
|
reserved_sectors = max(gc_reserve, reserved_sectors);
|
|
|
|
reserved_sectors = min(reserved_sectors, capacity);
|
|
|
|
c->reserved = reserved_sectors;
|
|
c->capacity = capacity - reserved_sectors;
|
|
|
|
c->bucket_size_max = bucket_size_max;
|
|
|
|
/* Wake up case someone was waiting for buckets */
|
|
closure_wake_up(&c->freelist_wait);
|
|
}
|
|
|
|
u64 bch2_min_rw_member_capacity(struct bch_fs *c)
|
|
{
|
|
u64 ret = U64_MAX;
|
|
|
|
for_each_rw_member(c, ca)
|
|
ret = min(ret, ca->mi.nbuckets * ca->mi.bucket_size);
|
|
return ret;
|
|
}
|
|
|
|
static bool bch2_dev_has_open_write_point(struct bch_fs *c, struct bch_dev *ca)
|
|
{
|
|
struct open_bucket *ob;
|
|
bool ret = false;
|
|
|
|
for (ob = c->open_buckets;
|
|
ob < c->open_buckets + ARRAY_SIZE(c->open_buckets);
|
|
ob++) {
|
|
spin_lock(&ob->lock);
|
|
if (ob->valid && !ob->on_partial_list &&
|
|
ob->dev == ca->dev_idx)
|
|
ret = true;
|
|
spin_unlock(&ob->lock);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* device goes ro: */
|
|
void bch2_dev_allocator_remove(struct bch_fs *c, struct bch_dev *ca)
|
|
{
|
|
lockdep_assert_held(&c->state_lock);
|
|
|
|
/* First, remove device from allocation groups: */
|
|
|
|
for (unsigned i = 0; i < ARRAY_SIZE(c->rw_devs); i++)
|
|
clear_bit(ca->dev_idx, c->rw_devs[i].d);
|
|
|
|
c->rw_devs_change_count++;
|
|
|
|
/*
|
|
* Capacity is calculated based off of devices in allocation groups:
|
|
*/
|
|
bch2_recalc_capacity(c);
|
|
|
|
bch2_open_buckets_stop(c, ca, false);
|
|
|
|
/*
|
|
* Wake up threads that were blocked on allocation, so they can notice
|
|
* the device can no longer be removed and the capacity has changed:
|
|
*/
|
|
closure_wake_up(&c->freelist_wait);
|
|
|
|
/*
|
|
* journal_res_get() can block waiting for free space in the journal -
|
|
* it needs to notice there may not be devices to allocate from anymore:
|
|
*/
|
|
wake_up(&c->journal.wait);
|
|
|
|
/* Now wait for any in flight writes: */
|
|
|
|
closure_wait_event(&c->open_buckets_wait,
|
|
!bch2_dev_has_open_write_point(c, ca));
|
|
}
|
|
|
|
/* device goes rw: */
|
|
void bch2_dev_allocator_add(struct bch_fs *c, struct bch_dev *ca)
|
|
{
|
|
lockdep_assert_held(&c->state_lock);
|
|
|
|
for (unsigned i = 0; i < ARRAY_SIZE(c->rw_devs); i++)
|
|
if (ca->mi.data_allowed & (1 << i))
|
|
set_bit(ca->dev_idx, c->rw_devs[i].d);
|
|
|
|
c->rw_devs_change_count++;
|
|
}
|
|
|
|
void bch2_dev_allocator_background_exit(struct bch_dev *ca)
|
|
{
|
|
darray_exit(&ca->discard_buckets_in_flight);
|
|
}
|
|
|
|
void bch2_dev_allocator_background_init(struct bch_dev *ca)
|
|
{
|
|
mutex_init(&ca->discard_buckets_in_flight_lock);
|
|
INIT_WORK(&ca->discard_work, bch2_do_discards_work);
|
|
INIT_WORK(&ca->discard_fast_work, bch2_do_discards_fast_work);
|
|
INIT_WORK(&ca->invalidate_work, bch2_do_invalidates_work);
|
|
}
|
|
|
|
void bch2_fs_allocator_background_init(struct bch_fs *c)
|
|
{
|
|
spin_lock_init(&c->freelist_lock);
|
|
}
|