zfs - adding a disk to existing vmpool

12:41

welp i was hoping to increase overall expansion and capactity with this by adding a 4tb disk to the existing 3x1tb raidz1-0 but all it did was add and additional 1TB of storage/redundancy.

that is ok for now, but i will likely want to destroy that zfs partition and setup a different raid with a 4tb mirror for redundancy...however, as it is already done. it is not reversible without destroying and recreating.

i had this drive laying around and had to open my server to fix a wonky ram in DIMM B1 anyway so here we are.

rebooted > new drive detected (this is a 4tb nvme drive) > get all the vm/lxc running and to command prompt.

first i wanted to check that the pool was what i thought it was and id new drive name:

zpool status -v vmpool
lsblk

the new drive is identified as nvme0n1

for my pool i see the existing three disks...so now to add the new disk

zpool attach vmpool raidz1-0 nvme0n1

this gave me an error so i had to upgrade the pool with the following command, then retry

zpool upgrade vmpool

not much info given in this process, just back to prompt so i ran the status line again. this showed me the disk was added, but that the capacity was still the same, after a little websearching ( i dont google anymore ;} ) i found i needed to expand the capacity with the following command:

zpool set autoexpand=on vmpool  

and then to get the drives to reinitialize...

zpool online -e vmpool nvme0n1

after this command everything showed up correctly using the status command:

https://ostechnix.com/move-proxmox-containers-vms-to-different-disk/

this looks like a pretty good guide, and will update as i go through the process of redoing the storage for my vms and lxc containers.