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ReadyNAS v.6.2.4 btrfs recovery

zorgie
Aspirant

ReadyNAS v.6.2.4 btrfs recovery

Hi,

my storage can't mount /dev/md127 after reboot. In process tree  i see mount /dev/md127 in D state. Dmesg says:

 

btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196
btrfs: corrupt leaf, slot offset bad: block=449773568,root=1, slot=196

 

 

Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md127 : active raid5 sdb3[0] sdc3[4] sdd3[5] sda3[1]
      5845994112 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU]

md1 : active raid6 sda2[0] sdc2[5] sdd2[4] sdb2[1]
      1047936 blocks super 1.2 level 6, 64k chunk, algorithm 2 [4/4] [UUUU]

md0 : active raid1 sda1[0] sdc1[5] sdd1[4] sdb1[1]
      4192192 blocks super 1.2 [4/4] [UUUU]

unused devices: <none>

 

 

# btrfs filesystem show
Label: '0e353126:NETG_5RAID'  uuid: e1557f17-5557-4ca4-bee3-04329056605a
        Total devices 1 FS bytes used 5.37TiB
        devid    1 size 5.44TiB used 5.44TiB path /dev/md127

Btrfs v3.17.3

 

 

Linux NETGEAR-BACKUP 3.0.101.RN2120.3 #1 SMP Wed Apr 1 16:09:30 PDT 2015 armv7l GNU/Linux


What can i do for repair btrfs ?

 

 

Message 1 of 5
mdgm-ntgr
NETGEAR Employee Retired

Re: ReadyNAS v.6.2.4 btrfs recovery

Do you have a backup of your data?

Your volume is very full. You shouldn't fill it that much.

If you don't have a backup you may wish to consider contacting support and to enquire about the costs involved with a data recovery attempt.

Message 2 of 5
zorgie
Aspirant

Re: ReadyNAS v.6.2.4 btrfs recovery

thanks for reply,

there is no backup data in my storage. May be i can rebalance data on FS or mount it and delete unnecessary files?

Message 3 of 5
mdgm-ntgr
NETGEAR Employee Retired

Re: ReadyNAS v.6.2.4 btrfs recovery

If you need a data recovery attempt you should follow my advice in my post above and not try to fix it yourself.

Message 4 of 5
zorgie
Aspirant

Re: ReadyNAS v.6.2.4 btrfs recovery

ok,  thanks for your help

Message 5 of 5
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