This is my backup NAS, that is normally power-off and only power-on once a week to sync with my primary NAS.
this time my BTRFS pool is not mounted and do not know how to proced.
all disk are in good state, and this is useful info, please tell me what more info is needed to mount the BTRFS poll
PD: Is a BTRFS pool of disk ( NO RAID) because Is a backup and easy to grow adding more disk from time to time.
Code
oot@pnas:~# btrfs filesystem show
Label: none uuid: 10234577-66f2-4a05-885e-bb4affee4874
Total devices 15 FS bytes used 36.05TiB
devid 1 size 2.73TiB used 2.41TiB path /dev/sdf
devid 2 size 2.73TiB used 2.41TiB path /dev/sdg
devid 3 size 2.73TiB used 2.41TiB path /dev/sde
devid 4 size 2.73TiB used 2.41TiB path /dev/sdc
devid 5 size 2.73TiB used 2.41TiB path /dev/sdb
devid 6 size 2.73TiB used 2.41TiB path /dev/sdp
devid 7 size 2.73TiB used 2.41TiB path /dev/sdl
devid 8 size 2.73TiB used 2.41TiB path /dev/sdk
devid 9 size 2.73TiB used 2.41TiB path /dev/sdj
devid 10 size 2.73TiB used 2.41TiB path /dev/sdn
devid 11 size 2.73TiB used 2.41TiB path /dev/sdo
devid 12 size 2.73TiB used 2.41TiB path /dev/sdh
devid 13 size 2.73TiB used 2.41TiB path /dev/sda
devid 14 size 2.73TiB used 2.41TiB path /dev/sdd
devid 15 size 2.73TiB used 2.41TiB path /dev/sdm
root@pnas:~# btrfs filesystem usage -T /srv/dev-disk-by-uuid-10234577-66f2-4a05-885e-bb4affee4874
ERROR: not a btrfs filesystem: /srv/dev-disk-by-uuid-10234577-66f2-4a05-885e-bb4affee4874
root@pnas:~# mount LABEL=DataPool
mount: LABEL=DataPool: can't find in /etc/fstab.
root@pnas:~# mount -o degraded LABEL=DataPool
mount: LABEL=DataPool: can't find in /etc/fstab.
root@pnas:~# btrfs check /dev/disk/by-uuid/10234577-66f2-4a05-885e-bb4affee4874
Opening filesystem to check...
Checking filesystem on /dev/disk/by-uuid/10234577-66f2-4a05-885e-bb4affee4874
UUID: 10234577-66f2-4a05-885e-bb4affee4874
[1/8] checking log skipped (none written)
[2/8] checking root items
[3/8] checking extents
[4/8] checking free space tree
[5/8] checking fs roots
[6/8] checking only csums items (without verifying data)
[7/8] checking root refs
[8/8] checking quota groups skipped (not enabled on this FS)
found 39639864467456 bytes used, no error found
total csum bytes: 38669887752
total tree bytes: 41899409408
total fs tree bytes: 2309210112
total extent tree bytes: 306855936
btree space waste bytes: 641270549
file data blocks allocated: 364455934316544
referenced 364455934283776i try to mount:
Code
oot@pnas:~# mount /dev/sdk /dev/disk/by-uuid/10234577-66f2-4a05-885e-bb4affee4874
mount: /dev/sdk: wrong fs type, bad option, bad superblock on /dev/sdk, missing codepage or helper program, or other error.
dmesg(1) may have more information after failed mount system call.
root@pnas:~#and this is a screenshot when BTRFS filesysm works: