PVE 6.1-11: Impossible to restore VMs from backup files

[MartinT]

Hi all.

I did HDD upgrade of two servers with fresh install of PROXMOX and end up with running hypervisors but without VMs. I am unable to restore VM backups from either WebUI or CLI.

WebUI showed me "TASK ERROR: ERROR: couldn't determine format and compression type".

I found this thread and tried restore from CLI, but without success:

# qmrestore /var/lib/vz/dump/vzdump-qemu-10202002_mat_20200505-201556.vma.lzo 10202002 --storage local --force
ERROR: couldn't determine format and compression type
# cat /var/lib/vz/dump/vzdump-qemu-10202002_mat_20200505-201556.vma.lzo |qmrestore - 10202002 --storage local --force
ERROR: couldn't determine format and compression type

I tried dowgrade qemu-server to 6.1-19 or patch /usr/share/perl5/PVE/QemuServer.pm (more here) - unsuccessfully.

# pveversion -v
proxmox-ve: 6.1-2 (running kernel: 5.3.18-3-pve)
pve-manager: 6.1-11 (running version: 6.1-11/f2f18736)
pve-kernel-helper: 6.1-9
pve-kernel-5.3: 6.1-6
pve-kernel-5.3.18-3-pve: 5.3.18-3
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.0.3-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: 0.8.35+pve1
libjs-extjs: 6.0.1-10
libknet1: 1.15-pve1
libproxmox-acme-perl: 1.0.2
libpve-access-control: 6.0-7
libpve-apiclient-perl: 3.0-3
libpve-common-perl: 6.1-1
libpve-guest-common-perl: 3.0-10
libpve-http-server-perl: 3.0-5
libpve-storage-perl: 6.1-7
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 4.0.2-1
lxcfs: 4.0.3-pve2
novnc-pve: 1.1.0-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.1-6
pve-cluster: 6.1-8
pve-container: 3.1-4
pve-docs: 6.1-6
pve-edk2-firmware: 2.20200229-1
pve-firewall: 4.1-2
pve-firmware: 3.0-7
pve-ha-manager: 3.0-9
pve-i18n: 2.1-1
pve-qemu-kvm: 4.1.1-4
pve-xtermjs: 4.3.0-1
qemu-server: 6.1-20
smartmontools: 7.1-pve2
spiceterm: 3.1-1
vncterm: 1.6-1
zfsutils-linux: 0.8.3-pve1

I will be grateful for advice, hint or workaround ..

Regards
MartinT

 

[MartinT]

I found way, how-to restore at least from CLI with using of patched PVE/QemuServer.pm (qemu-server 6.2-1):

cp -av /usr/share/perl5/PVE/QemuServer.pm /usr/share/perl5/PVE/QemuServer.pm_ORIG
curl 'https://git.proxmox.com/?p=qemu-server.git;a=blob_plain;f=PVE/QemuServer.pm;hb=ba76fc630bae2b8873acb8079025f7ee44bc21d9' >/usr/share/perl5/PVE/QemuServer.pm
lzop -d -c /var/lib/vz/dump/vzdump-qemu-10202002_mat_20200505-201556.vma.lzo |qmrestore - 10202002 --storage ZFSrpool --force

MartinT

 

[fabian]

your VZDump archives are not named according to the expected naming scheme..

 

[snowpoke]

I have this issue too but I'm using pipes, can you even name files via pipes ?

 

[fabian]

I have this issue too but I'm using pipes, can you even name files via pipes ?

the issue for pipes/STDIN is already fixed in qemu-server >= 6.2-1

 

[MartinT]

After upgrade to "qemu-server: 6.2-2", I tested WebUI restore and can confirm - it is working, if filename of backup file complies "naming scheme".

So far, I allways little bit changed name of backup file to reflect name of VM (more helpful for me than ID) - it is not working anymore.

For above mentioned backup file (#1) is necessary to do:

mv /var/lib/vz/dump/vzdump-qemu-10202002_mat_20200505-201556.vma.lzo /var/lib/vz/dump/vzdump-qemu-10202002-2020_05_05-20_15_56.vma.lzo

 

[Faruk Yerli]

It is working after the distribution upgrade.
(pve-kernel-5.4 (6.2-2))

 

[willybong]

For 6.2.4 doesn't work!!
When will it get fixed??

 

[Faruk Yerli]

First you need to change repository as below

https://pve.proxmox.com/wiki/Package_Repositories

then

apt-get update && apt-get dist-upgrade

PS: web & kernel & pve versions are different.