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Proxmox: Replacing Boot drive in a pool

Normal instructions say that you should either use /dev/sdx or /dev/disk/by-id/x in a zpool command. In my case after I physically replaced the bad SSD (from a RAID 1 pool), there was no longer any device reference to it (zpool replace would fail using the old reference). I noticed that the

zpool status rpool

Returned a sequence of numbers for the old drive instead of the device name. I suspect that is the UUID. Let's say it showed 1234567890.

zpool replace rpool 1234567890 /dev/disk/by-id/new_drive_id_xxxxxxxxxxxx

It should now attach and resilver the new drive. However, in my case the new drive had been automatically formatted without the BIOS/EFI partitions. If my original SSD ever failed, the new SSD would fail to boot.

I had to detach the new drive

zpool detach rpool /dev/disk/by-id/new_drive_id_xxxx

Then I went into the web interface, carefully selected the new drive, and chose "Wipe Disk". Then I followed the standard instructions:

sgdisk /dev/disk/by-id/orig_drive_id_xxxx /dev/disk/by-id/new_drive_id_xxxx

sgdisk -G /dev/disk/by-id/new_drive_id_xxxx

zpool attach -f rpool orig_drive_id_xxxx-part3 new_drive_id_xxxx-part3

Then wait for the resilver to end by checking with

zpool status rpool

Then setup the 512 MB EFI partition (if your BIOS supports EFI)

proxmox-boot-tool format /dev/disk/by-id/new_drive_id_xxxx-part2

proxmox-boot-tool init /dev/disk/by-id/new_drive_id_xxxx-part2

proxmox-boot-tool refresh

Otherwise if you use GRUB:

grub-install /dev/disk/by-id/new_drive_id_xxxx

Then reboot.

References:

How to: Replace dead physical disk from Proxmox (PVE) for ZFS pool easily (How to: Expand/Expand/Grow ZFS pool easily (Replace with larger physical disks)) > Blog-D without Nonsense

How to: Replace dead physical disk from Proxmox (PVE) for ZFS pool (How to Expand/Expand/Grow ZFS pool (Replace with larger physical disks))

Blog-D without Nonsense26 December, 2021 at 10:06 pm

How to: Find drive name (real name) for /dev/sdb /dev/sdc from Proxmox (PVE) > Blog-D without Nonsense

How to: Find drive name (real name) for /dev/sdb /dev/sdc from Proxmox (PVE)

Blog-D without NonsenseName

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