Control: tags -1 + moreinfo Hi,
On 13:33 Mon 11 Sep , Thomas Pierson wrote: > Package: ganeti > Version: 2.15.2-1~bpo8+1 > Severity: normal > > Dear Ganeti maintainers, > > I get random freeze on kvm guests in a Jessie Ganeti cluster. > > Last time it happened 2 times on the same guest at one week of interval. > Each time the guest only give ping response but nothing more and it get > back to work only after a `gnt-instance reboot`. > > I did not find trace or error in log files in the guest or in the hosts. > > I use ganeti and drbd packages from jessie-backports and kvm and kernel > packages from jessie archive. > The guest is a Debian Wheezy system but it got trouble on Debian Jessie > guest too. > One month ago I already post a bug report against the linux package > about disk lock on some Jessie guests in the same cluster: > - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870471 > In that cases I got something on the guests kernel logs so maybe it's a > different issue, maybe not… > > Any idea of how I can troubleshoot this issue? > Is there any log file to see the output of qemu-kvm for each instances? > Should I use a kernel and qemu-kvm package from jessie-backports too? Try running your instances with disk_aio=native (gnt-cluster modify -H kvm:disk_aio=native). This will require a hypervisor-level restart of all instances (i.e. gnt-instance reboot <instance>). Regards, Apollon
