In raid56 senario, after trying parity recovery, we didn't set
mirror_num for btrfs_bio with failed mirror_num, hence
end_bio_extent_readpage() will report a random mirror_num in dmesg
log.
Cc: David Sterba <dsterba@xxxxxxx>
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
fs/btrfs/volumes.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 73d56ee..be64e4a 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6197,6 +6197,7 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
} else {
ret = raid56_parity_recover(fs_info, bio, bbio,
map_length, mirror_num, 1);
+ btrfs_io_bio(bio)->mirror_num = mirror_num;
}
btrfs_bio_counter_dec(fs_info);
--
2.5.5
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