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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2012-06-14 16:42:31 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2012-07-02 15:36:23 -0400 |
| commit | 597a60fadedf9a40fdff8735054bf772b3dafd57 (patch) | |
| tree | 5fcd3c7c3ae4a28001eaea8ab0ea0ef48e456647 /fs/btrfs | |
| parent | d42244a0d36ad0939c5f173ebf15841a0678899c (diff) | |
| download | linux-597a60fadedf9a40fdff8735054bf772b3dafd57.tar.gz linux-597a60fadedf9a40fdff8735054bf772b3dafd57.tar.bz2 linux-597a60fadedf9a40fdff8735054bf772b3dafd57.zip | |
Btrfs: don't count I/O statistic read errors for missing devices
It is normal behaviour of the low level btrfs function btrfs_map_bio()
to complete a bio with -EIO if the device is missing, instead of just
preventing the bio creation in an earlier step.
This used to cause I/O statistic read error increments and annoying
printk_ratelimited messages. This commit fixes the issue.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Reported-by: Carey Underwood <cwillu@cwillu.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/volumes.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 8a3d2594b807..3f292cf693a7 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -4061,16 +4061,18 @@ static void btrfs_end_bio(struct bio *bio, int err) BUG_ON(stripe_index >= bbio->num_stripes); dev = bbio->stripes[stripe_index].dev; - if (bio->bi_rw & WRITE) - btrfs_dev_stat_inc(dev, - BTRFS_DEV_STAT_WRITE_ERRS); - else - btrfs_dev_stat_inc(dev, - BTRFS_DEV_STAT_READ_ERRS); - if ((bio->bi_rw & WRITE_FLUSH) == WRITE_FLUSH) - btrfs_dev_stat_inc(dev, - BTRFS_DEV_STAT_FLUSH_ERRS); - btrfs_dev_stat_print_on_error(dev); + if (dev->bdev) { + if (bio->bi_rw & WRITE) + btrfs_dev_stat_inc(dev, + BTRFS_DEV_STAT_WRITE_ERRS); + else + btrfs_dev_stat_inc(dev, + BTRFS_DEV_STAT_READ_ERRS); + if ((bio->bi_rw & WRITE_FLUSH) == WRITE_FLUSH) + btrfs_dev_stat_inc(dev, + BTRFS_DEV_STAT_FLUSH_ERRS); + btrfs_dev_stat_print_on_error(dev); + } } } |