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Forum Discussion
inactive volumes
Hello to everybody,
i have a readynas 314 with 2x3TB and 2x4TB WD red disks
After I sync the new disks (2x4TB) with the existing volume 2x3TB i want to switch from raid 5 xRaid to raid 10 FlexRai...
The logs are only showing two disks as detected (see e.g. disk_info.log, also kernel.log and systemd-journal.log show problems for the other two disks e.g.
Jul 12 13:11:18 NAS-Lucian kernel: disk 1, wo:0, o:1, dev:sdc2
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] killing request
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] CDB: Synchronize Cache(10) 35 00 00 00 00 00 00 00 00 00
Jul 12 13:33:07 NAS-Lucian kernel: blk_update_request: I/O error, dev sdc, sector 72
Jul 12 13:33:07 NAS-Lucian kernel: md/raid1:md0: Disk failure on sdc1, disabling device.
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] Synchronizing SCSI cache
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] Synchronize Cache(10) failed: Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] Stopping disk
Jul 12 13:33:07 NAS-Lucian kernel: sd 2:0:0:0: [sdc] Start/Stop Unit failed: Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Jul 12 13:33:07 NAS-Lucian kernel: disk 1, wo:1, o:0, dev:sdc1
Jul 12 13:33:07 NAS-Lucian mdadm[2709]: Fail event detected on md device /dev/md0, component device /dev/sdc1
Jul 12 13:33:07 NAS-Lucian kernel: md/raid1:md1: Disk failure on sdc2, disabling device.
Jul 12 13:33:07 NAS-Lucian kernel: disk 1, wo:1, o:0, dev:sdc2
Jul 12 13:33:07 NAS-Lucian disk_event_handler[8679]: Sending disk remove event for /dev/sdc to readynasd.
Jul 12 13:33:07 NAS-Lucian mdadm[2709]: Fail event detected on md device /dev/md1, component device /dev/sdc2
Jul 12 13:33:08 NAS-Lucian kernel: md: unbind<sdc2>
Jul 12 13:33:08 NAS-Lucian kernel: md: export_rdev(sdc2)
Looking at kernel.log / systemd-journal.log we see
Jul 12 13:00:54 NAS-Lucian kernel: md/raid:md127: device sda3 operational as raid disk 0
Jul 12 13:00:54 NAS-Lucian kernel: md/raid:md127: device sdb3 operational as raid disk 1
Jul 12 13:00:54 NAS-Lucian kernel: md/raid:md127: allocated 4362kB
Jul 12 13:00:54 NAS-Lucian kernel: md/raid:md127: not enough operational devices (2/4 failed)
Jul 12 13:00:54 NAS-Lucian kernel: md/raid:md127: failed to run raid set.
Jul 12 13:00:54 NAS-Lucian kernel: md: md127 stopped.
This is a data recovery situation. You may wish to contact support for assistance but there would be costs involved.
When I try to roll back to xraid mode i had a message about extended volume and had 2 new icons on volume tab
On my knowledge at that moment i didn't know how are redistributed all data after sync on all 4 disks. And i hot plug out disk 3 and 4
After i removed Disk 4 the array was only without redundancy but after i unplug disk 3 the raid become dead.
I try to reinsert Both disks, Reboot, Restart, etc. but without any positive results.
I didn't deleted anything or write on this volume in this period so think there is still a chance to rebuild my raid.
I see some Linux articles on internet but i am not very good to read and interpret all the parameters to be able to force reconstruct the raid
And for that reason I need some assistance
Thanks
On my knowledge at that moment i didn't know how are redistributed all data after sync on all 4 disks. And i hot plug out disk 3 and 4
After i removed Disk 4 the array was only without redundancy but after i unplug disk 3 the raid become dead.
I try to reinsert Both disks, Reboot, Restart, etc. but without any positive results.
I didn't deleted anything or write on this volume in this period so think there is still a chance to rebuild my raid.
I see some Linux articles on internet but i am not very good to read and interpret all the parameters to be able to force reconstruct the raid
And for that reason I need some assistance
Thanks
Zamolxses wrote:
And for that reason I need some assistancePaid support (my.netgear.com) would give you the best chance of preserving your data (my.netgear.com). If you need data recovery services it would be expensive. But they might be able to mount your volume without that.
If you can connect all the disks to a Windows PC (using either SATA or a USB adapter/dock), then you could also try ReclaiMe software.
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