Extend ZFS pool on Proxmox Backup Server

[turbosac]

Hello everyone,

So I have had my Proxmox Backup Server installed and running for about 6 months now, with a RAID1 ZFS pool of 2 HDDs of 1TB each, running like a charm.

I am slowly but steadily running out of space (I have prune and GC configured), so I bought 2 2TB NAS HDDs. I already swapped both disks one by one and resilvered both, and now my ZFS pool is running on 2 new disks, but I need to extend the storage to 2TB. Both disks data partitions are already set up to 2TB

I am having problems solving that. I tried using zpool and parted, but it seems it doesn't work or I'm not getting the proper commands.

Could someone give me a few tips on how I can do this?

sda is my boot drive.

sdb and sdc are my ZFS pool drives.

Thanks in advance!

 

[ggoller]

Hi!
you need to take the device offline (zpool offline RAID1BIT <device>), then replace it (zpool replace RAID1BIT <old-device> <new-device>). Wait for the resilver and take the disk online again (zpool online)!

Edit: also it's best practice to use the disk by-id identifier as you did with the first disk! The device label could change on reboot!

 

[turbosac]

Thank you for your help Gabriel! I really forgot I posted a thread here, sorry for taking so long to reply...

So one day, my PBS recognized the full size of my drives and update the pool's size.

When I first resilvered the disks, I did it being online, next time I will try taking the device offline first.