Hi
I suddenly got issues accessing a samba share and rebooted the server.
After the reboot the btrfs mount does not come up and prints the
following messages in dmesg:
[ 530.881802] btrfs: device fsid 9302fc8f-15c6-46e9-9217-951d7423927c
devid 4 transid 138602 /dev/sdt
[ 530.882734] btrfs: disk space caching is enabled
[ 530.883697] btrfs: failed to read the system array on sdt
[ 530.898188] btrfs: open_ctree failed
Probably some kind of issue with btrfs was the reason for the samba
share failing.
--
- All seven 4TB drives is in one btrfs RAID10 with no lvm/mdadm
btrfs fi show
Label: none uuid: 9302fc8f-15c6-46e9-9217-951d7423927c
Total devices 7 FS bytes used 9.91TiB
devid 2 size 3.64TiB used 3.07TiB path /dev/sdm
devid 3 size 3.64TiB used 3.07TiB path /dev/sds
devid 4 size 3.64TiB used 3.07TiB path /dev/sdt
devid 5 size 3.64TiB used 3.07TiB path /dev/sdo
devid 6 size 3.64TiB used 3.07TiB path /dev/sdp
devid 7 size 3.64TiB used 3.07TiB path /dev/sdq
devid 8 size 3.64TiB used 3.07TiB path /dev/sdr
Btrfs v3.12
/etc/fstab:
UUID=9302fc8f-15c6-46e9-9217-951d7423927c /btrfs
btrfs defaults,compress=lzo,noatime 0 2
UUID=9302fc8f-15c6-46e9-9217-951d7423927c /storage/storage-vol0
btrfs defaults,subvol=storage-vol0,noatime 0 2
uname -a
Linux merkur 3.12.6 #1 SMP Sat Dec 21 02:23:32 CET 2013 x86_64 GNU/Linux
Hardware:
Supermicro Xeon server with 16GB ECC RAM, LSI HBAs and WD SE 4TB drives.
Adding recovery to mount options:
# mount /btrfs/
mount: wrong fs type, bad option, bad superblock on /dev/sdt,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
----
What is the correct steps forward to mount my array again?
Best regards,
Hans-Kristian
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