Dear PVE-List! In the last days I migrated (Restart Mode) several LXC containers (from small 10GB to big 400GB) from node to node, to get one node free for testing microcode updates.
The destination node has a local-LVM on a RAID 10 consisting of 4 SSDs which perform well. The cluster (not HA) is running PVE 5.1-43 using "pve-no-subscription.list" While migrating, the I/O-delay rises to very high values over 80% on the destination node. Other containers and VMs on the destination node are affected heavily from this and are nearly unreachable or even not responding at all while migrating the last two times. After the last migration finished, I realized that one VM with normally very low workload was using 100% of one of two cores and was still not responding, although the migration had finished. I tried to "Reset" the VM without success. Then I tried to "Stop" it with success. This produced a unbootable bootdisk and I had to restore the backup of the VM. Is this high I/O-delay a known issue? Do I have a faulty configuration? Does somebody has an idea how to reduce the I/O-delay? Perhaps reducing the allowed network traffic? The traffic rises up to 100-120 MB/s - which is of course good, regarding the time used for migrations. Thank you for any advice! Kind regards! Falco -- Datenfalke - Dipl. Inf. Falco Kleinschmidt Adresse: Dinnendahlstr. 8 - 45136 Essen Steuer-Nr: DE248267798 Telefon: +49-(0)201-6124650 Fax: +49-(0)201-6124651 Email: [email protected] WWW: http://www.datenfalke.de _______________________________________________ pve-user mailing list [email protected] https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
