Destroy Raid1 - zfs sytem

[cr_eis]

Hello,
I installed proxmox on a server in raid1 with the zfs file system. There is a vm installed too. Is it possible to remove the raid while keeping my vm ?
Then to transform my zfs file system to ext4. Here is my configuration :

root@tx100-62:~# zpool status
  pool: rpool
 state: ONLINE
  scan: resilvered 1.75M in 00:00:01 with 0 errors on Thu Jun 10 14:55:53 2021
config:

        NAME                                                  STATE     READ WRITE CKSUM
        rpool                                                 ONLINE       0     0     0
          mirror-0                                            ONLINE       0     0     0
            ata-WDC_WD2000FYYZ-50UL1B0_WD-WCC1P1144111-part3  ONLINE       0     0     0
            ata-WDC_WD2000FYYZ-50UL1B0_WD-WCC1P1144468-part3  ONLINE       0     0     0

errors: No known data errors
root@tx100-62:~# df -h
Filesystem        Size  Used Avail Use% Mounted on
udev              7.8G     0  7.8G   0% /dev
tmpfs             1.6G  8.8M  1.6G   1% /run
rpool/ROOT/pve-1  1.8T  1.5G  1.8T   1% /
tmpfs             7.9G   43M  7.8G   1% /dev/shm
tmpfs             5.0M     0  5.0M   0% /run/lock
tmpfs             7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/fuse          30M   16K   30M   1% /etc/pve
tmpfs             1.6G     0  1.6G   0% /run/user/0
rpool             1.8T  128K  1.8T   1% /rpool
rpool/data        1.8T  128K  1.8T   1% /rpool/data
rpool/ROOT        1.8T  128K  1.8T   1% /rpool/ROOT

Thanks

 

[Stoiko Ivanov]

SImplest and safest solution would be to create a backup of your VM, test the backup, and then setup your PVE anew with ext4

I hope this helps!

 

[cr_eis]

As a last solution, yes, but I would have liked to know if I could remove the raid without having to reinstall proxmox.

 

[Stoiko Ivanov]

As a last solution, yes, but I would have liked to know if I could remove the raid without having to reinstall proxmox.

In theory yes - but it would more or less amount to reinstalling proxmox VE:
* remove one disk from the mirror, repartition it correctly, create a lvm-thin (or whatever you want to have as storage)
* rsync the root filesystem over
* bind-mount all relevant filesystems (proc,sys,dev,run,boot,ESP) on the new disk
* chroot into the new system
* install the boot-loader (grub)
* try booting into the new system

In my experience it is far easier, safer and faster to just reinstall and restore the VMs and configs

 

[cr_eis]

That's right it's more eaiser to backup the vm and reinstal. I'm choosing this solution
thanks