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Btrfs: use bigger metadata chunks on bigger filesystems

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The 256MB chunk is a little small on a huge FS.  This scales up the
chunk size.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2012-01-06 15:47:38 -05:00
parent cf1d72c9ce
commit 1100373f8a
1 changed files with 5 additions and 1 deletions
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6
fs/btrfs/volumes.c
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@ -2441,7 +2441,11 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
max_stripe_size = 1024 * 1024 * 1024;
max_chunk_size = 10 * max_stripe_size;
} else if (type & BTRFS_BLOCK_GROUP_METADATA) {
max_stripe_size = 256 * 1024 * 1024;
/* for larger filesystems, use larger metadata chunks */
if (fs_devices->total_rw_bytes > 50ULL * 1024 * 1024 * 1024)
max_stripe_size = 1024 * 1024 * 1024;
else
max_stripe_size = 256 * 1024 * 1024;
max_chunk_size = max_stripe_size;
} else if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
max_stripe_size = 8 * 1024 * 1024;