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I'm trying to debug this issue: I have an old Debian VM with kernel 2.6.26 (i386) than has been converted from physical to virtual on a PVE 7.x temporary installation. It worked flawlessly on that PVE until it was moved to a new machine with pve-manager/8.1.4/ec5affc9e41f1d79 (running kernel...

I have tried (and rolled back) a P2V of a win2003r2 server. Everything seemed fine with IDE virtual disks, but when backup task (snapshot) started on the VM, I got a lot of IDE timeouts in the windows guest log, then the VM crashed. I found the VM simply switched off. Restarted it, found the...

I have just read the documentation about the new PBS, and I am concerned about ransomware (or worse, attacks that are carried on by humans, that are far more intelligent that automated ransomware). The backup model is "push", i mean, the client machine (the one that is being backed up) accesses...

After fighting with ZFS memory hunger, poor performance, and random reboots, I just have replaced it with mdraid (raid1), ext4, and simple qcow2 images for the VMs, stored in the ext4 file system. This setup should be the least efficient because of the multiple layers of abstraction (md and...

I have a quite old Dell R310 with a Xeon X3440 @ 2.53GHz, with the latest Dell BIOS and various firmwares (they should be patched for Spectre/Meltdown). I have installed the latest PVE and set up 2 Linux VMs. (Devuan 2, basically a Debian 9 without systemd) I have 5% to 6% cpu always in use...

I am investigating 2 incidents that seem to be similar. On 2 different PVE servers, both running ZFS with raidz (mirroring with 2 disks), I experience random reboots during backups of KVM machines. (no clustering, single hosts) Both server are low on RAM. One has 8 GB RAM and a single VM with 1...