failed/damaged pool - please help?

[mattragusa]

FreeNAS hobbiest here. I had a very stable and reliable installation running smoothly.

A combination of bad timing with a power failure and a disk swap led to a damaged pool. I'm not sure where to begin trying to recover it, if possible.

This is a screenshot of what I think is the problem.

Any and all help is GREATLY appreciated.

 

[Apollo]

Wait for it to complete. It is, I believe, going through the import process just after boot up. IT might take some time but hopefully it will complete and make the system available.

 

[artlessknave]

it doesn't look like you give any info on your hardware or config or anything, so I'm not sure what help can be given. at this point, you pretty much have to either wait for it to finish the import or for that import to fail. do NOT just reboot it unless one of the GURU's tell you to, as if you interrupt whatever it's doing that is known to kill pools.

 

[mattragusa]

Of course, background would be useful.

It's 10 WD 8TB drives in a RaidZ2.

Those errors don't prevent boot, but the Pool is unavailable when the system is up.

I've tried exporting the pool (successfully) but when I try to reimport it, I get the dreaded I/O error, and that I need to destroy and recreate from backup.

Is this pool repairable?

 

[Johnny Fartpants]

I would be tempted to do a fresh install on another boot device and see what happens. It may just be that ZFS is trying to use the zpool.cache file and that's why it's failing to import. A fresh install will make ZFS 'taste' the disks again to build the pool.

 

[mattragusa]

Looks like I'm making progress?

However, I'm not sure where to go from here. All the drives are showing up when I look at Disks

Thanks

 

[Johnny Fartpants]

Its hard to read that, zpool status in code tags would be better.

How is your pool configured is it 1 x 10 disk z2?

PS: How did you get to that stage, I presume a clean install? It's helpful to other users that may find themselves in the same position one day.

 

[mattragusa]

Thank you.

Yes to the configuration. 10 disks in a z2.

I haven't reinstalled anything yet. To be honest, I woke up to the pool in a faulted state, when it was unavailable last night.

How might I produce the codes you mention?

Should I reinstall on a new flash drive, and try to import it through the web gui?