AnnHashaway Posted September 6, 2019 Share Posted September 6, 2019 I have an 8TB red parity and three 4TB red data drives. I took the server apart because I was going to change some parts, but ended up putting it all back together the same way. Once I booted back up, I am getting this message on one of the drives: Unmountable: Unsupported partition layout I have everything backed up, so I have tried to format the drive, preclear it, everything I could find for the last few weeks on the forums. No matter what happens, it comes back to this. When I preclear, the preclear fails after a day or so. (I attached the latest preclear report.) The only thing I haven't done is pull the drive and format it in another computer. I am not sure if that would work. Any ideas? Are there any other reports I can add here to help? Thank you. preclear_disk_WD-WCC7K0KE9C88_2123.txt Quote Link to comment
itimpi Posted September 6, 2019 Share Posted September 6, 2019 That log shows that the preclear appeared to finish OK. After you have run preclear on a disk it is by definition neither formatted or partitioned as you have just written zeroes to the whole drive. You have to use the option to format it in Unraid to make it usable. This will create an empty file system on the drive. If the format does not work then you need to provide the system diagnostics taken just after attempting the format so we can see what is happening. Quote Link to comment
AnnHashaway Posted September 6, 2019 Author Share Posted September 6, 2019 It is currently 5% through the Parity Sync / Data Rebuild process. Should I wait that out, or go ahead and add it back to unassigned devices and format? Quote Link to comment
itimpi Posted September 6, 2019 Share Posted September 6, 2019 (edited) 7 minutes ago, AnnHashaway said: It is currently 5% through the Parity Sync / Data Rebuild process. Should I wait that out, or go ahead and add it back to unassigned devices and format? You can let that run. At this point Unraid should be emulating the drive so is it showing as an unmountable disk? If so then Unraid will be rebuilding it to match the emulated state and the fix is to run a file system repair on it. If as you implied you ran a format on the drive at some point (format is never part of the normal data recovery process) then parity would have been updated to reflect that so you will probably end up with an empty file system on the disk. Edited September 6, 2019 by itimpi Quote Link to comment
AnnHashaway Posted September 6, 2019 Author Share Posted September 6, 2019 The empty file system is ok. I can restore. The issue is I have run format on it probably 10 times. It fails to format each time in Unassigned Devices. Quote Link to comment
itimpi Posted September 7, 2019 Share Posted September 7, 2019 7 hours ago, AnnHashaway said: The empty file system is ok. I can restore. The issue is I have run format on it probably 10 times. It fails to format each time in Unassigned Devices. It is only going to be relevant if the format from within Unraid itself fails. Quote Link to comment
JorgeB Posted September 7, 2019 Share Posted September 7, 2019 And if it keeps failing we need the diags to see why. Quote Link to comment
AnnHashaway Posted September 7, 2019 Author Share Posted September 7, 2019 The Parity Sync / Data Rebuild process has finished, and the disk remains unmountable. (Attached) I am now going to move the drive to UA and run format. Quote Link to comment
AnnHashaway Posted September 7, 2019 Author Share Posted September 7, 2019 OK, I was able to format without taking it out of the array. It only took a few seconds, and I am getting the same readout of Unmountable. Are these the diagnostics I should post? Quote Link to comment
AnnHashaway Posted September 7, 2019 Author Share Posted September 7, 2019 Attached. Thanks. denali-diagnostics-20190907-1548.zip Quote Link to comment
JorgeB Posted September 8, 2019 Share Posted September 8, 2019 Try again after rebooting, since there were some issues with disk2, which might be failing in case you didn't noticed, if still the same please post new diags. Quote Link to comment
AnnHashaway Posted September 8, 2019 Author Share Posted September 8, 2019 Restarted the system. Same result. Diagnostics attached. denali-diagnostics-20190908-1610.zip Quote Link to comment
JorgeB Posted September 9, 2019 Share Posted September 9, 2019 Not seeing a format attempt. Quote Link to comment
AnnHashaway Posted September 9, 2019 Author Share Posted September 9, 2019 Here is a fresh set after another format attempt. This is done straight from the array while mounted. It only takes about 20 seconds to complete, and returns to the same Unmountable message. denali-diagnostics-20190909-1448.zip Quote Link to comment
JorgeB Posted September 9, 2019 Share Posted September 9, 2019 There are issues with the filesystem on disk2, though not sure it's related: Sep 9 06:34:35 Denali kernel: XFS (md2): Unmount and run xfs_repair Still run xfs_repair on disk2, reboot and try again. https://wiki.unraid.net/Check_Disk_Filesystems Quote Link to comment
AnnHashaway Posted September 9, 2019 Author Share Posted September 9, 2019 Ran xfs_repair -v on disk2, rebooted, and formatted disk3 again. Diagnostics attached denali-diagnostics-20190909-1651.zip Quote Link to comment
JorgeB Posted September 9, 2019 Share Posted September 9, 2019 Very strange, it's like the partition isn't being created, but there are no errors, not sure what's going on, do you have another disk you could try? Can't see how it could be anything other than the disk. Quote Link to comment
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