I have 2 disk in Proxmox lab that configured with RAID 1
sda = 20GB
sdb = 20GB
It have total capacity 20GB
I will increase the disk size to be 30GB. So that, I insert 2 new disks
sdc = 30GB
sdd = 30GB
It will have total capacity 30GB
Below is the steps that will be done on this task
- Replace sdb with sdc
- Replace sda with sdd
- fdisk /dev/sdc and /dev/sdd to expand the disk
- Expand zfs on rpool
- Detach old disks from server
Current rpool status # zpool status pool: rpool state: ONLINE scan: resilvered 900M in 0h12m with 0 errors on Fri Jun 7 15:35:41 2019 config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda3 ONLINE 0 0 0 sdb3 ONLINE 0 0 0
1. Replace sdb with sdc
sgdisk -R /dev/sdc /dev/sda (sgdisk -R /dev/newdisk /dev/olddisk) sgdisk -G /dev/sdc (sgdisk -G /dev/newdisk) grub-install /dev/sdc (grub install) zpool replace rpool /dev/sdb3 /dev/sdc3 (replace the disk) Waiting the resilvering process until it done. After that, continue to replace disk on sda
2. Replace sda with sdd
sgdisk -R /dev/sdd /dev/sdc sgdisk -G /dev/sdd grub-install /dev/sdd zpool replace rpool /dev/sda3 /dev/sdd3 Waiting the resilvering process until it done.
3. fdisk /dev/sdc and /dev/sdd to expand the disk
fdisk /dev/sdc: Current disk layout : Device Start End Sectors Size Type /dev/sdc1 34 2047 2014 1007K BIOS boot /dev/sdc2 2048 1050623 1048576 512M EFI System /dev/sdc3 1050624 41943006 40892383 19.5G Solaris /usr & Apple ZFS Choose d (delete the last partition partitin 03) Choose n (create new partion for partition 03) Do you want to remove the signature? [Y]es/[N]o: N (Type N to avoid any disk corruption) Choose t then Type 48 for Solaris /usr & Apple ZFS partition type Choose w (to write the new partition) Disk layout after expand the disk: Device Start End Sectors Size Type /dev/sdc1 34 2047 2014 1007K BIOS boot /dev/sdc2 2048 1050623 1048576 512M EFI System /dev/sdc3 1050624 62914526 61863903 29.5G Solaris /usr & Apple ZFS fdisk /dev/sdd: Do the same above steps to expand /dev/sdd partprobe (to detect new disk layout)
4. Expand zfs on rpool
zpool set autoexpand=on rpool zpool online -e rpool /dev/sdc3 zpool online -e rpool /dev/sdd3 zpool set autoexpand=off rpool root@prox3:~# zpool status pool: rpool state: ONLINE scan: resilvered 900M in 0h12m with 0 errors on Fri Jun 7 15:35:41 2019 config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sdb3 ONLINE 0 0 0 sdc3 ONLINE 0 0 0
5. Detach the Old disks from the server. After that, restart the server.
The disk layout will change as follow
root@prox3:~# zpool status pool: rpool state: ONLINE scan: resilvered 900M in 0h12m with 0 errors on Fri Jun 7 15:35:41 2019 config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda3 ONLINE 0 0 0 sdb3 ONLINE 0 0 0
thyspir 