December 5, 20241 yr Hi everyone, hope you can help me fix the following issue. I had to shutdown my array today due to electrical work taking place, and the array isn't starting up anymore. It is stuck on mounting disks. I am attaching the diagnostics before I start the array. I don't see any issue on the log file. The process is stuck at trying to mount Disk 3 of the array. Disk 1 and 2 are xfs and Disk 3 is zfs. 8TB each. zpool import returns Which is strange since I didn't do anything to the cachessd pool which shows as unavailable. Any thoughts are more than welcome. Cheers, Zen hades-diagnostics-20241205-1144.zip Edited December 5, 20241 yr by Zentachi
December 5, 20241 yr Community Expert Not sure if the issue is disk3 or the pool, see if disk3 imports in the CLI: zpool import disk3
December 5, 20241 yr Author 24 minutes ago, JorgeB said: Not sure if the issue is disk3 or the pool, see if disk3 imports in the CLI: zpool import disk3 I entered this , took like 10 mins and came online. If not disk3 problem maybe its the cachessd pool zfs raidz1? I came across this topic Do you think it is a partition problem in my case as well? Even though the two bad disks aren't identical to the still working one? fdisk -l fdis If there is no other ideas I think I will try this solution Edited December 5, 20241 yr by Zentachi
December 5, 20241 yr Community Expert 1 hour ago, Zentachi said: I entered this , took like 10 mins and came online. If it took 10 minutes, this could be the delay, though the pool also has an issue. Since two devices are missing the partition, was the pool created with Unraid?
December 5, 20241 yr Author 1 hour ago, JorgeB said: If it took 10 minutes, this could be the delay, though the pool also has an issue. Since two devices are missing the partition, was the pool created with Unraid? Yes it was created with Unraid. I tried a couple of things but nothing worked for the cachessd pool. So I destroyed it and will rebuild it from scratch.
December 5, 20241 yr Community Expert If it was created with Unraid we could try to see if the old partitions still exist, though I've never tried this with zfs.
December 6, 20241 yr Author In the end I decided to just recreate the pools. Thankfully I had some partial backups of the VMs in this pool and I managed to have everything up and running almost as good as before. One of the things I found out though is that the array start up in my case takes too long. Disk 3 which is a zfs disk overall takes 50+ mins to be mounted. I don't know if its because it has too many snapshots (3000+) since it doesn't seem there is any other issue with it. Any idea how to remove some snapshots or how to decrease the frequency they are created?
December 6, 20241 yr Community Expert 7 minutes ago, Zentachi said: I don't know if its because it has too many snapshots (3000+) It's likely at least a big part of the problem. 8 minutes ago, Zentachi said: Any idea how to remove some snapshots or how to decrease the frequency they are created? What are you using to create them?
December 6, 20241 yr Author 6 minutes ago, JorgeB said: It's likely at least a big part of the problem. What are you using to create them? I believe the ZFS master plugin. I set everything up some time back. Maybe I should go ask in the ZFS master plugin thread rather than wasting your time
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