On 3/8/22 20:25, Lentes, Bernd wrote: > Hey guys, > > i have a two-node cluster with around 20 domains. Cluster-Software is > pacemaker and corosync, OS is SLES 12 SP5. > The scripts for starting/stopping the domains use virsh. Is there a way to > reliably shutdown the domains via virsh ? > I'm testing around, but sometimes the domains stop, sometimes they don't, > sometimes it takes very long so that the cluster times out > and fence the respective node. > I'm using "virsh shutdown domain --mode acpi,agent" for the windows domains > (not reliable) and for the linux domains > "virsh shutdown domain", also not reliable.
In general, if agent is available it's more likely to succeed than acpi, because the shutdown is initiated from inside the guest (/sbin/shutdown is invoked for UNIX-like systems, or Windows equivalent) while with ACPI a guest can simply chose to ignore it. In fact, that's what libvirt does - whenever agent method is available (i.e. --mode contains agent, or no specific --mode was requested = libvirt is free to chose), it is preferred. I assume you don't see any errors reported by virsh and thus "sometimes it takes very long" [to shutdown a guest] could mean that guests are under heavy load, e.g. they are syncing disks before shutdown, stopping services, etc. I don't think I have a good answer for you until the root cause if found. Michal