PVE restore file from PBS inconsistency

C

czechsys

Renowned Member
Nov 18, 2015
419
43
93
Hi,

we are running with
Code: 
Apt::Install-Recommends "0";

and it trigger some inconsistency when testing file restore.

proxmox-ve: 6.4-1 (running kernel: 5.4.106-1-pve)
pve-manager: 6.4-4 (running version: 6.4-4/337d6701)
pve-kernel-5.4: 6.4-1
pve-kernel-helper: 6.4-1
pve-kernel-5.3: 6.1-6
pve-kernel-5.0: 6.0-11
pve-kernel-5.4.106-1-pve: 5.4.106-1
pve-kernel-5.4.78-2-pve: 5.4.78-2
pve-kernel-5.4.55-1-pve: 5.4.55-1
pve-kernel-5.4.44-2-pve: 5.4.44-2
pve-kernel-5.4.41-1-pve: 5.4.41-1
pve-kernel-5.3.18-3-pve: 5.3.18-3
pve-kernel-5.0.21-5-pve: 5.0.21-10
pve-kernel-5.0.15-1-pve: 5.0.15-1
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.1.2-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: 0.8.35+pve1
ksm-control-daemon: 1.3-1
libjs-extjs: 6.0.1-10
libknet1: 1.20-pve1
libproxmox-acme-perl: 1.0.8
libproxmox-backup-qemu0: 1.0.3-1
libpve-access-control: 6.4-1
libpve-apiclient-perl: 3.1-3
libpve-common-perl: 6.4-2
libpve-guest-common-perl: 3.1-5
libpve-http-server-perl: 3.2-1
libpve-storage-perl: 6.4-1
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 4.0.6-2
lxcfs: 4.0.6-pve1
novnc-pve: 1.1.0-1
openvswitch-switch: 2.12.3-1
proxmox-backup-client: 1.1.5-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.5-3
pve-cluster: 6.4-1
pve-container: 3.3-5
pve-docs: 6.4-1
pve-edk2-firmware: 2.20200531-1
pve-firewall: 4.1-3
pve-firmware: 3.2-2
pve-ha-manager: 3.1-1
pve-i18n: 2.3-1
pve-qemu-kvm: 5.2.0-6
pve-xtermjs: 4.7.0-3
qemu-server: 6.4-1
smartmontools: 7.2-pve2
spiceterm: 3.1-1
vncterm: 1.6-2
zfsutils-linux: 2.0.4-pve1

1] file restore
Code: 
proxmox-file-restore failed: Error: cannot run file-restore VM: package 'proxmox-backup-restore-image' is not (correctly) installed (500)

2] proxmox-backup-file-restore
Code: 
Package: proxmox-backup-file-restore
Version: 1.1.5-2
Depends: libacl1 (>= 2.2.23), libc6 (>= 2.18), libgcc1 (>= 1:4.2), libssl1.1 (>= 1.1.0), libstdc++6 (>= 5.2), libuuid1 (>= 2.16), libzstd1 (>= 1.3.2)
Recommends: pve-qemu-kvm (>= 5.0.0-9), proxmox-backup-restore-image
- if file restore depends on image-restore, why it's in recommends?

3] inconsistency proxmox-backup-restore-image vs proxmox-backup-file-restore
 
For completeness' sake, the file restore consists of two packages, the proxmox-backup-file-restore one providing the CLI user interface and handling pxar archives (CT, host backups) directly, and the proxmox-backup-restore-image one, which is a small, optimized kernel + rust-based daemon which handles backup images from VMs, as mount is not a safe operation we do it in a contained micro VM for security reasons.
 
Last edited:
I just don't understand use-case.

libpve-storage-perl - depends on proxmox-backup-file-restore (so we can restore from...only pbs)
proxmox-backup-file-restore - don't depends on proxmox-backup-restore-image (so we can't by default restore from pbs, if we don't install recommends automatically)

I think, having proxmox-backup-restore-image as dependency is needed, because without it proxmox-backup-file-restore is useless, so having it only as recommend is too low (especially for upgrades from older versions).
 
Last edited:
czechsys said:
I think, having proxmox-backup-restore-image as dependency is needed, because without it proxmox-backup-file-restore is useless, so having it only as recommend is too low (especially for upgrades from older versions).
Click to expand...
No, it's not useless, you can use it on container backups just fine without that package. The Recommends is correct, see also Debians definition of that dependency relationship:

Recommends
This declares a strong, but not absolute, dependency.
The Recommends field should list packages that would be found together with this one in all but unusual installations.
Click to expand...
-- https://www.debian.org/doc/debian-p...ends-recommends-suggests-enhances-pre-depends

If you plainly disable installing recommended package dependencies you'll run in more of such issues, as you run an unusual installation then (as defined by Debian), where you need to handle such things yourself.
 
Last edited:
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