How to vma extract -r fifo from zstd ?

[RCK]

Hello All,

I'm looking to extract one vma backup directly from one file.vma.zst.
I know I could unztd the file.vma.zst first, then use "vma extract" on this file, but the challenge is to use the standard output to not write the temp .vma file

When restoring backup, proxmox is using such command:

zstd -q -d -c /mnt/pve/local-ext-hdd/dump/vzdump-qemu-1013-2022_06_28-16_53_40.vma.zst | vma extract -v -r /var/tmp/vzdumptmp1800767.fifo - /var/tmp/vzdumptmp1800767

But it's not working when I try the same from the command line:

set -o pipefail && zstd -q -d -c file.vma.zst | vma extract -v -r vzdumptmp.fifo - vzdumptmp

CFG: size: 292 name: qemu-server.conf
DEV: dev_id=1 size: 2147483648 devname: drive-scsi0
CTIME: Mon Jan 24 03:44:22 2022
vma: unable to open fifo vzdumptmp.fifo - No such file or directory
Trace/breakpoint trap

Did someone know how to correctly use this temp .fifo file (vma extract -r) to let me extract my file.vma.zst without writing the file.vma first ?

 

[fiona]

Hi,
just get rid of the -r vzdumptmp.fifo part of the command

 

[RCK]

Awesome, thanks for the information Fiona

 

[ivenae]

Is there a possibility to push the .raw image from vma extract directly into local-zfs storage without creating the subdir with qemu-server.conf?
Or is there a possibility to mount a .raw image directly in a VM to recover files?

 

[fiona]

Hi,

Is there a possibility to push the .raw image from vma extract directly into local-zfs storage without creating the subdir with qemu-server.conf?

if you restore the VM, you can specify the target storage. If you only want to restore a single drive of an archive to a certain storage, that's not easily possible right now.

Or is there a possibility to mount a .raw image directly in a VM to recover files?

As long as it's inside the vma archive, no. You need to extract it to a Proxmox VE storage and attach it. You could also consider using Proxmox Backup Server instead of vma archives, which does have support for file restore.