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drbd: Added transmission faults to the fault injection code

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Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2010-04-26 14:11:45 +02:00
parent 087c24925c
commit 6b4388ac1f
3 changed files with 10 additions and 2 deletions
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1
drivers/block/drbd/drbd_int.h
View File

@ -132,6 +132,7 @@ enum {
DRBD_FAULT_DT_RA = 6, /* data read ahead */ DRBD_FAULT_DT_RA = 6, /* data read ahead */
DRBD_FAULT_BM_ALLOC = 7, /* bitmap allocation */ DRBD_FAULT_BM_ALLOC = 7, /* bitmap allocation */
DRBD_FAULT_AL_EE = 8, /* alloc ee */ DRBD_FAULT_AL_EE = 8, /* alloc ee */
DRBD_FAULT_RECEIVE = 9, /* Changes some bytes upon receiving a [rs]data block */
DRBD_FAULT_MAX, DRBD_FAULT_MAX,
}; };

3
drivers/block/drbd/drbd_main.c
View File

@ -3668,7 +3668,8 @@ _drbd_fault_str(unsigned int type) {
[DRBD_FAULT_DT_RD] = "Data read", [DRBD_FAULT_DT_RD] = "Data read",
[DRBD_FAULT_DT_RA] = "Data read ahead", [DRBD_FAULT_DT_RA] = "Data read ahead",
[DRBD_FAULT_BM_ALLOC] = "BM allocation", [DRBD_FAULT_BM_ALLOC] = "BM allocation",
[DRBD_FAULT_AL_EE] = "EE allocation" [DRBD_FAULT_AL_EE] = "EE allocation",
[DRBD_FAULT_RECEIVE] = "receive data corruption",
}; };
return (type < DRBD_FAULT_MAX) ? _faults[type] : "**Unknown**"; return (type < DRBD_FAULT_MAX) ? _faults[type] : "**Unknown**";

8
drivers/block/drbd/drbd_receiver.c
View File

@ -1270,6 +1270,7 @@ read_in_block(struct drbd_conf *mdev, u64 id, sector_t sector, int data_size) __
int dgs, ds, i, rr; int dgs, ds, i, rr;
void *dig_in = mdev->int_dig_in; void *dig_in = mdev->int_dig_in;
void *dig_vv = mdev->int_dig_vv; void *dig_vv = mdev->int_dig_vv;
unsigned long *data;
dgs = (mdev->agreed_pro_version >= 87 && mdev->integrity_r_tfm) ? dgs = (mdev->agreed_pro_version >= 87 && mdev->integrity_r_tfm) ?
crypto_hash_digestsize(mdev->integrity_r_tfm) : 0; crypto_hash_digestsize(mdev->integrity_r_tfm) : 0;
@ -1307,7 +1308,12 @@ read_in_block(struct drbd_conf *mdev, u64 id, sector_t sector, int data_size) __
ds = data_size; ds = data_size;
bio_for_each_segment(bvec, bio, i) { bio_for_each_segment(bvec, bio, i) {
page = bvec->bv_page; page = bvec->bv_page;
rr = drbd_recv(mdev, kmap(page), min_t(int, ds, PAGE_SIZE)); data = kmap(page);
rr = drbd_recv(mdev, data, min_t(int, ds, PAGE_SIZE));
if (FAULT_ACTIVE(mdev, DRBD_FAULT_RECEIVE)) {
dev_err(DEV, "Fault injection: Corrupting data on receive\n");
data[0] = data[0] ^ (unsigned long)-1;
}
kunmap(page); kunmap(page);
if (rr != min_t(int, ds, PAGE_SIZE)) { if (rr != min_t(int, ds, PAGE_SIZE)) {
drbd_free_ee(mdev, e); drbd_free_ee(mdev, e);