Expand dRaid on Proxmox Backup Server

[Sidhana]

Hello everyone,

At the moment we have dRaid configured with draid1:5d:18c:1s and we want to expand the disks with this config dRaid1:10d:34c:1s.
I want to know if I can expand the dRaid with more disks without destroying the current dRaid or data on it and how?

 

[aaron]

Correct me if I am wrong, but AFAIK, raidz and draids cannot be expanded by adding disks. Adding a new vdev to the pool would work, though.

The zpool-attach man page says the following:

Attaches new_device to the existing device. The existing device cannot be part of a raidz configuration. If device is not currently part of a mirrored configuration, device automatically transforms into a two-way mirror of device and new_device. If device is part of a two-way mirror, attaching new_device creates a three-way mirror, and so on. In either case, new_device begins to resilver immediately and any running scrub is cancelled.

 

[Sidhana]

Correct me if I am wrong, but AFAIK, raidz and draids cannot be expanded by adding disks. Adding a new vdev to the pool would work, though.

The zpool-attach man page says the following:

I have been trying to do it but no success yet.
How can I add the /dev/sda and /dev/sde to the existing pool?

 

[Sidhana]

I have been trying to do it but no success yet.
How can I add the /dev/sda and /dev/sde to the existing pool?
View attachment 50318
View attachment 50319

 

[aaron]

And that is what I meant. You cannot expand a draid currently. Maybe in the future, but for now ZFS doesn't support it. You could add the two disks as a mirror to you pool, but that will be its own vdev. In the end the pool would then have the draid and mirror vdev.

Alternatively, move the data away temporarily and recreate the pool with the larger draid.