[SOLVED] rpool mirror

[ducs4rs]

I had a bad disk in my rpool. I replaced the disk but the new disk turned out to be really slow. I decided to remove it with zpool detatch . I am trying to attach a new drive to the rpool but I get an error. See below

root@pveprod:~# zpool status rpool
  pool: rpool
 state: ONLINE
  scan: resilvered 7.34G in 00:33:49 with 0 errors on Wed Nov  1 14:55:29 2023
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          sdm3      ONLINE       0     0     0

errors: No known data errors
root@pveprod:~#

root@pveprod:~# lsblk |grep sdp
sdp      8:240  1  59.8G  0 disk

root@pveprod:~# lsblk |grep sdm
sdm      8:192  1  59.8G  0 disk
├─sdm1   8:193  1  1007K  0 part
├─sdm2   8:194  1   512M  0 part
└─sdm3   8:195  1  59.3G  0 part
root@pveprod:~#

root@pveprod:~# zpool attach -f rpool sdm sdp
cannot label 'sdp': failed to detect device partitions on '/dev/sdp1': 19
root@pveprod:~#

 

[leesteken]

Your command is slightly wrong but replacement for a drive in the rpool is a bit more involved when you want to be able to boot from it.
Please have a look at the Proxmox manual https://pve.proxmox.com/pve-docs/pve-admin-guide.html and search for "Changing a failed bootable device" (sorry, there is no direct link)..

 

[ducs4rs]

Your command is slightly wrong but replacement for a drive in the rpool is a bit more involved when you want to be able to boot from it.
Please have a look at the Proxmox manual https://pve.proxmox.com/pve-docs/pve-admin-guide.html and search for "Changing a failed bootable device" (sorry, there is no direct link)..

It looks to me the guide you posted was to replace a rpool device and not to recreate a rpool mirror. Am I mis-reading this?

 

[leesteken]

It looks to me the guide you posted was to replace a rpool device and not to recreate a rpool mirror. Am I mis-reading this?

Indeed, because you already detached the old one, you need to zpool attach rpool /dev/sdm3 /dev/sdp3 instead. But since this is the rpool, you'll want to partition the drive and make it bootable also. Those steps are in the manual.

 

[ducs4rs]

Indeed, because you already detached the old one, you need to zpool attach rpool /dev/sdm3 /dev/sdp3 instead. But since this is the rpool, you'll want to partition the drive and make it bootable also. Those steps are in the manual.

Got it. Thanks..

 

[ducs4rs]

while the doc is not 100% clear, your pointers got me over the hump. Mirror is back together and system boots just fine. Thanks !

root@pveprod:~# zpool status rpool pool: rpool state: ONLINE scan: resilvered 7.34G in 01:23:32 with 0 errors on Wed Nov 1 20:09:15 2023 config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sdn3 ONLINE 0 0 0 sdm3 ONLINE 0 0 0 sdm 8:192 1 59.8G 0 disk ├─sdm1 8:193 1 1007K 0 part ├─sdm2 8:194 1 512M 0 part └─sdm3 8:195 1 59.3G 0 part sdn 8:208 1 59.8G 0 disk ├─sdn1 8:209 1 1007K 0 part ├─sdn2 8:210 1 512M 0 part └─sdn3 8:211 1 59.3G 0 part root@pveprod:~# cat /etc/kernel/proxmox-boot-uuids 03C5-CD07 45ED-2DC6