Hello Vikram, On 12/09/2013 05:51 PM, Vikram Goyal wrote:
Hello, I am having a problem where a stuck scrub on root FS cannot be cancelled or restsrted. Please See: [root@mail2 ~]# btrfs filesystem show Label: fedora_mail2 uuid: d2b3420c-99c1-44cc-a922-ac266072c7fb Total devices 2 FS bytes used 58.88GiB devid 2 size 73.51GiB used 31.03GiB path /dev/sdb6 devid 3 size 73.30GiB used 32.03GiB path /dev/sda2 Label: Vikram uuid: 0809b072-35f3-4866-92b8-af4772b23ed6 Total devices 2 FS bytes used 98.05GiB devid 1 size 158.03GiB used 99.04GiB path /dev/mapper/sda3 devid 2 size 157.00GiB used 99.03GiB path /dev/dm-1 Btrfs v3.12 [root@mail2 ~]# btrfs scrub status -d / scrub status for d2b3420c-99c1-44cc-a922-ac266072c7fb scrub device /dev/sdb6 (id 2) status scrub started at Thu Apr 18 13:51:13 2013, running for 105 seconds total bytes scrubbed: 3.81GiB with 0 errors scrub device /dev/sda2 (id 3) status scrub started at Thu Apr 18 13:51:13 2013, running for 105 seconds total bytes scrubbed: 4.34GiB with 0 errors [root@mail2 ~]# btrfs scrub cancel / ERROR: scrub cancel failed on /: not running [root@mail2 ~]# btrfs scrub start -Bd / ERROR: scrub is already running. To cancel use 'btrfs scrub cancel /'. To see the status use 'btrfs scrub status [-d] /'.
I came the same issue before and i sent a patch for this: https://patchwork.kernel.org/patch/3264051/ This patch has been merged into David's integration branch. You can pull from: https://github.com/kdave/btrfs-progs.git integration-20131206 you can use: # btrfs scrub start -f / This should help, -f will force us to skip check in userspace. Thanks, Wang
Thanks!
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