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Volume lost on ReadyNas 104
Hello,
I lost my volume on a ReadyNas 104. No errors have been logged according to the admin page, only a bunch of warnings around April this year. See output in attachment.
I have not done any actions on the NAS so far. Help to reconnect to the volume is very much appreciated!
I downloaded all logs, so in case I need to share additional information. Please let me know.
Kind regards,
Markuzz.
Markuzz wrote:
See attachment for output 1 of 2.
This should assemble, so I am puzzled by the earlier issue.
The event counters (13922, 13917, 13926, 13917) do show some lost writes - they should all be 13926.
Maybe try this variation:
mdadm --assemble --really-force /dev/md127 /dev/sda3 /dev/sdb3 /dev/sdc3 /dev/sdd3
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Hallo Markuzz
Ignoring all warnings have lead to the end of this volume (including your data) started. Two disks were removed back in April, or some hardware issue caused to drop the channels with the ST3000DM001. Even before, the Toshiba and the Hitachi drive reported high spin retry counts, indicating a possible coming up failure. Read that complete message what your ReadyNAS indicated several times before.
Don't know if this RN104 will now no longer willing to take new HDDs in slot #1 and slot #3, certainly the HDD in channel #4 was lost before - there is went the only redundancy.
Not sue what you expect now.
Grüsse aus der Schweiz
-Kurt
Markuzz wrote:
I do not understand - while having a few warnings - the volume gets lost.
In February, the volume became degraded - meaning one disk dropped out of the array. The screenshot doesn't say which one.
Later on we see warnings that two additional disks were failing. Also that a third disk was removed.
All of these can (and often do) lead to data loss.
But we are only seeing the warnings in your screen shot, and there is lot of info that is likely missing. For instance, it is possible that the volume resynced after the February problem. Also we don't know what RAID mode you are using.
Markuzz wrote:
Is there anyway to try force connect the volume again?
Probably the best path is RAID recovery software (ReclaiMe is one people have used here). You'd need a way to connect the disks to a Windows PC (usb adapter docks will work, some have multiple bays). And you'd need a place to offload the data.
It might be possible to forcibly assemble the array - not sure. I wouldn't put much stock in the disk health you are seeing now. Have you ever used the linux command line? Also is ssh already enabled on the NAS.
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