Btrfs: deal with read errors on extent buffers differently

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Since we need to read and write extent buffers in their entirety we can't use
the normal bio_readpage_error stuff since it only works on a per page basis.  So
instead make it so that if we see an io error in endio we just mark the eb as
having an IO error and then in btree_read_extent_buffer_pages we will manually
try other mirrors and then overwrite the bad mirror if we find a good copy.
This works with larger than page size blocks.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Josef Bacik 2012-03-26 21:57:36 -04:00 • committed by Chris Mason

parent f3f266ab1b

commit ea46679408

3 changed files with 66 additions and 27 deletions

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43

fs/btrfs/disk-io.c

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42

fs/btrfs/extent_io.c

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8

fs/btrfs/extent_io.h

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