[SOLVED] Convert zpool from dev letter to UUID

P

Pedulla

Well-Known Member
Aug 1, 2017
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Oregon, USA
I have a zpool created using dev letters (sdX) and need to convert it to UUID.

Is a conversion possible w/o destroying the contents of the zpool?

- or -

Is it a matter of blowing it up and doing it over?

Thanks in advance.

PS. I initially created it this way because there was no way in the GUI to include a log device and didn't understand the volatility of sdX.
PVE 7.1-8
 
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That seems too easy.
I'll backup and give it a shot and report back to close this one out.

I assume you identify the name of the pool in the first command? (I have multiple pools)
 
It is that easy. Try it in a VM if you need to be sure

Yes, if you have multiple pools you would need to specify the pool name to export
 
Well I'll be dipped, it was that easy. I didn't even have to know the ID's of the drive, it just found them by the pool name that the drives were already associated to. Pretty cool.
Once I shut down all the VM's that were using the pool and disabled the pool in the proxmox web ui under datacenter.storage (not sure if that was necessary) I ran:
# zpool export -f poolname ... wait... # zpool import -d /dev/disk/by-id poolname

Reenabled the pool from the UI and fired the VM's back up... Joy!

The -f in the export may or may not have been necessary but as I was figuring out what VM's were still connected to the pool, it found its way into the command.

@bobmc Thank you so much.

That pool ran for about a week in the degraded state, so I suspect re-silvering will take a bit.
Proxmox is cool
ZFS is cool
@bobmc is cool
 
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bobmc said:
zpool export

zpool import -d /dev/disk/by-id <name of pool>
Click to expand...
The guide i followed, showed this, i did this on a new zpool tho, but it worked wounderfull and no problems, and now my disks are mounted by uuid.
It is really this easy.
 
I did this and the import triggered the destruction of my zpool. 10TB of data deleted, about 1TB of hadn't yet been backed up. Losing my mind.
I tried:
zpool import -D
to see if I could recover that lost pool, but it wasn't found.
 
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leothaes said:
I did this and the import triggered the destruction of my zpool.
Click to expand...
Really? As long as yo do not actually write data to the disks with the exported pool... everything might still be there!

What is the full output (in [CODE]...[/CODE]-tags please) of:
  • zpool import
  • zpool import -n -F
  • zpool import -d /dev/disk/by-id/
  • zpool import -n -F -d /dev/disk/by-id

"man zpool-import" shows more options...
 
UdoB said:
Really? As long as yo do not actually write data to the disks with the exported pool... everything might still be there!

What is the full output (in [CODE]...[/CODE]-tags please) of:
  • zpool import
  • zpool import -n -F
  • zpool import -d /dev/disk/by-id/
  • zpool import -n -F -d /dev/disk/by-id

"man zpool-import" shows more options...
Click to expand...
All cmds return message "no pools available to import".
 
leothaes said:
All cmds return message "no pools available to import".
Click to expand...
Okay, that's sad.
It would be really interesting what exactly happened. Does journalctl --since -2d --grep zfs show something?
 
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