Moving from OpenVZ 7 to Proxmox 8.3: just a few basic questions (consistent live backups)

tranxene50

New Member
Jan 25, 2025
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0
1
Hello from France! :)

Background:

- I have used Proxmox 2 & 3 in the past but switched to OpenVZ 6 & 7 because it was a better choice when using Linux containers (almost no overhead)
- Now, I am switching back to Proxmox because QEMU is way more stable/advanced when dealing with VM (at this time: single server, no cluster, LVM)

# ---

However, I have a "critical" question about backups.

Is it possible (with QEMU), when doing a backup to get :

- a consistent data snapshot of the VM (seems ok)
- a consistent memory dump of the VM (not sure**)

** "dump-guest-memory" could be a solution but how to restore this "image" in a new VM?

The idea is to get a truly restorable live backup:

- when restored, data, memory and processus are running again like nothing happened**
- there is no data loss or corruption at all (ex: MySQL/MariaDB) and no need to check the FS

** already possibe because live migrations between nodes seems to to that (is a cluster needed?)

# ---

Since I am "new" (again) to using Proxmox, please feel free to send me RTFM links without comments! ^^

Have a great sunday! :)
 

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