On Tue, Mar 29, 2016 at 02:17:48PM -0700, Yauhen Kharuzhy wrote: > If device replace entry was found on disk at mounting and its num_write_errors > stats counter has non-NULL value, then replace operation will never be > finished and -EIO error will be reported by btrfs_scrub_dev() because > this counter is never reset. > > # mount -o degraded /media/a4fb5c0a-21c5-4fe7-8d0e-fdd87d5f71ee/ > # btrfs replace status /media/a4fb5c0a-21c5-4fe7-8d0e-fdd87d5f71ee/ > Started on 25.Mar 07:28:00, canceled on 25.Mar 07:28:01 at 0.0%, 40 write > errs, 0 uncorr. read errs > # btrfs replace start -B 4 /dev/sdg > /media/a4fb5c0a-21c5-4fe7-8d0e-fdd87d5f71ee/ > ERROR: ioctl(DEV_REPLACE_START) failed on > "/media/a4fb5c0a-21c5-4fe7-8d0e-fdd87d5f71ee/": Input/output error, no error > > Reset num_write_errors and num_uncorrectable_read_errors counters in the > dev_replace structure before start of replacing. > > Signed-off-by: Yauhen Kharuzhy <[email protected]>
Reviewed-by: David Sterba <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
