Re install OS to recover VM without losing Data

[you-adn]

Hi There.
as shown in the attached, The OS wouldn't boot ( ubuntu ) and the only way is to re install the OS, But unfortunately my back wasn't up to date.
IF I go to the actual VM, and attache ISO file in order to re install the OS, would that mess up my data ( Hard drive - zfs-local ) ? where I re install the OS, boot, and be able to access same Files/data ( 3TB ) ?
Please advise . Thanks in advance.

 

[Dunuin]

If you just want to get access to your files you could:
1.) Make sure the VM is shutdown, then mount that zvol directly on your PVE host (using something like mount -t YourUsedFilesystem /dev/zvol/zfs-local/vm-104-disk-0 /mnt/vm104disk0), copy your files and then unmount it again (umount /mnt/vm104disk0).
2.) alternativly you could insert a Linux Live CD in your virtual CD drive of the VM, then boot that Live Linux in RAM so you can use it without actually needing to install it. Then use that Live Linux to copy your data to a network share. You could also chroot into your old system.

 

[you-adn]

Thanks lot !
so I cloned the VM then re installed the os on the clone. where I still have the data plus added hard disk for just the os. it boots correctly now (the clone ).
I was able to mount the other H disk ( contains data ) but wasn't able to find / see the actual data
am I missing a step ?
Thanks Again !