Re: btrfs check - Couldn't open file system

[Anand Jain <Anand.Jain@oracle.com>]

  very strange. I have no clue, yet. also bit concerned if this
  turns out to be a real issue. hope you could help to narrow down.

  can you send `blkid` output from your system.
And
  can you go back to 3.16 and check if you have the same issue.

thanks, anand


> IWT-VM ~ # uname -a
> Linux IWT-VM 3.17.2-gentoo #1 SMP Mon Nov 3 15:46:50 AEDT 2014 x86_64 Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz GenuineIntel GNU/Linux
> IWT-VM ~ # mount
> /dev/sdb2 on / type btrfs (rw,noatime,compress=zlib,ssd,noacl,space_cache)
> /dev/sdh1 on /media/fast type btrfs (rw,noatime,ssd,noacl,space_cache)
> /dev/sdg3 on /media/backup type btrfs (rw,noatime,compress=zlib,noacl,space_cache)
> /dev/sda1 on /media/data type btrfs (rw,noatime,compress=zlib,noacl,space_cache)
> IWT-VM ~ # btrfs fi sh
> Label: 'Root'  uuid: 61f6ce80-6d05-414f-9f0f-3d540fa82f2e
>          Total devices 2 FS bytes used 6.58GiB
>          devid    4 size 60.00GiB used 18.03GiB path /dev/sdb2
>          devid    5 size 59.93GiB used 18.03GiB path /dev/sdi3
>
> Label: 'Fast'  uuid: c41dc6db-6f00-4d60-a2f7-acbceb25e4e7
>          Total devices 3 FS bytes used 396.85GiB
>          devid    1 size 471.93GiB used 416.02GiB path /dev/sdh1
>          devid    2 size 412.00GiB used 356.01GiB path /dev/sdi1
>          devid    3 size 163.57GiB used 108.01GiB path /dev/sdb1
>
> Label: 'Backup'  uuid: 92162be2-e52f-42fe-a9fd-da4f26c6abd1
>          Total devices 5 FS bytes used 2.74TiB
>          devid    6 size 891.50GiB used 822.00GiB path /dev/sdg3
>          devid    8 size 698.64GiB used 629.00GiB path /dev/sdd1
>          devid    9 size 891.51GiB used 821.03GiB path /dev/sde3
>          devid   10 size 2.73TiB used 2.66TiB path /dev/sdc1
>          devid   11 size 931.51GiB used 924.00GiB path /dev/sdf1
>
> Label: 'Data'  uuid: 89181f84-bace-43f8-9534-693f99c4d033
>          Total devices 2 FS bytes used 42.50GiB
>          devid    1 size 279.46GiB used 211.03GiB path /dev/sda1
>          devid    2 size 279.46GiB used 211.03GiB path /dev/sdj1
>
> Btrfs v3.17
> IWT-VM ~ # umount /media/backup
> umount: /media/backup: not mounted
> IWT-VM ~ # btrfs check /dev/sdg3
> Couldn't open file system
> IWT-VM ~ # btrfs check /dev/sdd1
> Couldn't open file system
> IWT-VM ~ # btrfs check /dev/sde3
> Couldn't open file system
> IWT-VM ~ # btrfs check /dev/sda1
> Checking filesystem on /dev/sda1
> UUID: 89181f84-bace-43f8-9534-693f99c4d033
> checking extents
> checking free space cache
> checking fs roots
> checking csums
> checking root refs
> found 38060448123 bytes used err is 0
> total csum bytes: 44401072
> total tree bytes: 110723072
> total fs tree bytes: 50872320
> total extent tree bytes: 9994240
> btree space waste bytes: 12145264
> file data blocks allocated: 45618331648
>   referenced 48120782848
> Btrfs v3.17
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>