VMA file not extracting.

[Zypherex]

Hey Proxmox peeps,

I have a very important VM that I am needing to recover and I dont need it to be the whole VM. I am mainly after the configuration data and I can rebuild from there. The backup was taken a shy bit over a month ago on a synology NAS however when I try to extract it I get a corrupt block error. Pretty sure this happens during the extraction faze as I am manually decompressing now to get my VMA file. It appears I will not be able to mount a VMA file. However every time I try to restore it fails and deletes the volume.

1.) Is it possible to keep the volume intact and not delete itself after the failure.
2.) If that .raw disk file is able to remain in the directory would it be readable if mountable. Like I said not all data as I am looking for maybe 500MB off this server.

 

[Zypherex]

Come to find out this is actually failing during the decompression part........is there anyway I can recover this?

 

[Zypherex]

I edited the qemuserver.pm file located for me in (usr/share/perl15/PVE) to have zstd not delete the vma disk.....fingers crossed.

 

[Zypherex]

No luck.....this is frustrating. I commented out the code provided in https://forum.proxmox.com/threads/defect-backup-partly-restore-disks-from-broken-backup.80937/ in hopes that it would prevent it from removing the VMA however it still removed it......

 

[Zypherex]

If found I commented out the $cfg line instead of the $storecfg so giving it another shot lets see if it works.

 

[fiona]

Hi,
did you run systemctl reload-or-restart pveproxy.service pvedaemon.service to reload the API after editing the file?

 

[Zypherex]

Hey Fabian,

I did restart both each time I tested. (I have 2 SSH windows open so the first time I ran the restart pvedaemon in the other window.) I just checked this morning and found that it is still removing the VMA file once it completes. Are there other lines I need to edit to keep the .vma intact even after the decoding fails?

 

[fiona]

It seems that you are using zstd directly. Editing Proxmox VE scripts won't affect that. Please try to use qmrestore or restore via UI.

 

[Zypherex]

Giving it a shot now Fabian

 

[Zypherex]

Thank you Fabian this worked! Would it be possible to enable a flag option with qmrestore to keep partial disk? So that even if not bootable you can recover data.

 

[fiona]

Thank you Fabian this worked! Would it be possible to enable a flag option with qmrestore to keep partial disk? So that even if not bootable you can recover data.

Feel free to open a feature request on our bug tracker: https://bugzilla.proxmox.com/