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ReadyNAS 316 (6x4TB Enterprise) - No volumes after graceful shutdown and restart
I shutdown my RN316 while leaving for a few days. Upon restart, I was able to connect and access normally. However after about 15 minutes when I tried to save a file to the NAS I was not able to acce...
Are you seeing any disk errors or btrfs errors in system.log, kernel.log, systemd-journal.log?
Hi StephenB
Thanks for pointing me to those logs and taking the time to review this. .
From Systemd-journal.log:
"Jan 26 10:14:12 NAS_IV kernel: md/raid:md1: raid level 6 active with 6 out of 6 devices, algorithm 2"
(It looks like on bootup all 6 drives started up ok. Then...)
" Jan 26 10:14:12 NAS_IV kernel: BTRFS: device label 7c6e3b76:root devid 1 transid 4240856 /dev/md0"
(I think this must have been a failure on Raid Disk 1, because next I see ...)
"Jan 26 10:14:12 NAS_IV kernel: md: kicking non-fresh sdf3 from array!"
(There is no matching BTRFS error for this Raid Drive 5, but next I see...)
"Jan 26 10:14:12 NAS_IV kernel: md/raid:md127: not enough operational devices (2/6 failed)"
(Followed by unbind and export_rdev for each drive.)
RT6507 wrote:
"Jan 26 10:14:12 NAS_IV kernel: md: kicking non-fresh sdf3 from array!"
(There is no matching BTRFS error for this Raid Drive 5, but next I see...)
"Jan 26 10:14:12 NAS_IV kernel: md/raid:md127: not enough operational devices (2/6 failed)"
(Followed by unbind and export_rdev for each drive.)
Any idea on what the second missing disk might be?
I think Disk 1 and Disk 5 must have been the problems:
"Jan 26 09:54:23 NAS_IV kernel: --- level:5 rd:6 wd:4
Jan 26 09:54:23 NAS_IV kernel: disk 0, o:1, dev:sda3
Jan 26 09:54:23 NAS_IV kernel: disk 2, o:1, dev:sdc3
Jan 26 09:54:23 NAS_IV kernel: disk 3, o:1, dev:sdd3
Jan 26 09:54:23 NAS_IV kernel: disk 4, o:1, dev:sde3"
RT6507 wrote:
I think Disk 1 and Disk 5 must have been the problems:
"Jan 26 09:54:23 NAS_IV kernel: --- level:5 rd:6 wd:4
Jan 26 09:54:23 NAS_IV kernel: disk 0, o:1, dev:sda3
Jan 26 09:54:23 NAS_IV kernel: disk 2, o:1, dev:sdc3
Jan 26 09:54:23 NAS_IV kernel: disk 3, o:1, dev:sdd3
Jan 26 09:54:23 NAS_IV kernel: disk 4, o:1, dev:sde3"Normally you'd see sda - sdf. sdb would be disk 2 (numbering from 1), sdf would disk 6. So 1 and 5 if numbering from 0.
Can you test them in a Windows PC with vendor tools (Dashboard for Western Digital, Seatools for Seagate)?
sdf can be forcibly added to the array with ssh,though it would be good to understand what is happening with sdb.
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