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I was forced to power off ReadyNAS and now all disks are offline
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When ReadyNAS powers on after power off, disks are offline.
This information is in dmesg:
[ 18.427668] systemd-journald[1361]: Received request to flush runtime journal from PID 1 [ 19.484836] md: md127 stopped. [ 19.486279] md: bind<sdb3> [ 19.486530] md: bind<sdc3> [ 19.486761] md: bind<sdd3> [ 19.486983] md: bind<sda3> [ 19.488890] md/raid:md127: device sda3 operational as raid disk 0 [ 19.488898] md/raid:md127: device sdd3 operational as raid disk 3 [ 19.488902] md/raid:md127: device sdc3 operational as raid disk 2 [ 19.488906] md/raid:md127: device sdb3 operational as raid disk 1 [ 19.489778] md/raid:md127: allocated 4362kB [ 19.489900] md/raid:md127: raid level 5 active with 4 out of 4 devices, algorithm 2 [ 19.489906] RAID conf printout: [ 19.489910] --- level:5 rd:4 wd:4 [ 19.489914] disk 0, o:1, dev:sda3 [ 19.489918] disk 1, o:1, dev:sdb3 [ 19.489922] disk 2, o:1, dev:sdc3 [ 19.489927] disk 3, o:1, dev:sdd3 [ 19.490151] md127: detected capacity change from 0 to 8986874216448 [ 19.832338] BTRFS: device label 5e27553c:data devid 1 transid 27646256 /dev/md127 [ 19.900226] Adding 1046524k swap on /dev/md1. Priority:-1 extents:1 across:1046524k [ 61.590536] BTRFS error (device md127): parent transid verify failed on 14932132233216 wanted 27646257 found 27643074 [ 61.595845] BTRFS error (device md127): parent transid verify failed on 14932132233216 wanted 27646257 found 27643074 [ 61.595857] BTRFS warning (device md127): failed to read log tree [ 61.655455] BTRFS error (device md127): open_ctree failed
Is there something can be done to get system online again?
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I got it back online with this command.
btrfs rescue zero-log /dev/md127
I know it is risky, but that is only option in this case.
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Re: I was forced to power off ReadyNAS and now all disks are offline
@jukkaforss wrote:
[ 61.590536] BTRFS error (device md127): parent transid verify failed on 14932132233216 wanted 27646257 found 27643074 [ 61.595845] BTRFS error (device md127): parent transid verify failed on 14932132233216 wanted 27646257 found 27643074 [ 61.595857] BTRFS warning (device md127): failed to read log tree [ 61.655455] BTRFS error (device md127): open_ctree failedIs there something can be done to get system online again?
The data volume's file system is corrupted. Options are to
- contact paid support (my.netgear.com). You'll likely need a data recovery contract: https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
- Do a factory default on the NAS, reconfigure it, and restore the data from your backup. Obviously not an option if you don't have a backup.
- Connect the disks to a Windows PC (either with SATA or with USB adapters/docks) and see if ReclaiMe can find the files. You'd then be able to offload them to other storage. https://www.reclaime.com/
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I got it back online with this command.
btrfs rescue zero-log /dev/md127
I know it is risky, but that is only option in this case.
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Re: I was forced to power off ReadyNAS and now all disks are offline
@jukkaforss wrote:
I got it back online with this command.
btrfs rescue zero-log /dev/md127
I know it is risky, but that is only option in this case.
That's good news, but I wouldn't trust the file system integrity if it were my own system.
I suggest backing up the data, and then doing a factory default. Reconfigure the NAS, and restore the data from the backup.