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Well, looks really like swap issue, so add memory / move some VMs and set low swappiness. Default 60 is way too much for virtualization server IMO.

Hello. I have Proxmox server with some KVMs, active working during the day. At night no users are at office, so VMs are really doing nothing. So, every morning there is some period (about an hour), when VMs are rather slow, then performance is back to normal until the next morning. I see...

Hello and thank you for making such a great product. I need a little bit strange configuration of Proxmox cluster: 1. I need three nodes cluster; 2. node 1 and node 2 have the same hardware configuration and are not used by now (no storage/vms). 3. node 3 is running in production with multiple...

Hmmm, so https://pve.proxmox.com/wiki/DRBD is (completely) obsolete and "shared" LVM storage works only for "real" shared storage. But if a container has only one LVM volume, works anyway o_O. Ok, many thanks, I'll try DRBD9/drbdmanage/storage plugin. -- Best regards, Max

Wolfgang, thanks for testing. DRBD device is a physical volume here, so it's more lower level I believe, and the main logical volume (disk-1) is on the same VG and the same DRBD device. My PVE version is 5.1 with latest updates. I'll try some another tests and write about results. Just some...

Hello, Wolfgang. I've traced an issue via Proxmox sources and yes, this is the command that caused the error. The command prints the same error message (filesystem is in use). The Proxmox code for mounting/unmounting/migration looks correct (and it's rather easy to read btw). lvs shows...

The migration log is: task started by HA resource agent 2018-01-29 21:21:33 starting migration of CT 100 to node 'n1' (192.168.88.137) 2018-01-29 21:21:33 volume 'vg0:vm-100-disk-1' is on shared storage 'vg0' 2018-01-29 21:21:33 volume 'vg0:vm-100-disk-2' is on shared storage 'vg0' can't...

I have two nodes cluster setup (actually three nodes with the third used for quorum). I'm using LVM volume storage (not thin provisioning) on top of DRBD on first two nodes. The LVM storage is marked as "shared". I created an LXC container and can migrate it between nodes without any problem...