Re: [libvirt] [PATCH 13/14] virsh: Add migrate-compcache command

This is a command wrapping virDomainMigrateGetCompressionCache and virDomainMigrateSetCompressionCache. --- tools/virsh-domain.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 12 ++++++++++ 2 files changed, 80 insertions(+)

diff --git a/tools/virsh.pod b/tools/virsh.pod index e675850..8f62378 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1114,6 +1114,18 @@ Set maximum tolerable downtime for a domain which is being live-migrated to another host. The I<downtime> is a number of milliseconds the guest is allowed to be down at the end of live migration. +=item B<migrate-compcache> I<domain> [I<--size> B<bytes>] + +Sets and/or gets size of the cache (in bytes) used for compressing repeatedly +transferred memory pages during live migration. When called without I<size>, +the command just prints current size of the compression cache. When I<size> +is specified, the hypervisor is asked to change compression cache to I<size> +bytes and then the current size is printed (the result may differ from the +requested size due to rounding done by the hypervisor). With I<size> this

+command is supposed to be called while the domain is being live-migrated as +a reaction to migration progress and increasing number of compression cache +misses obtained from domjobinfo. + =item B<migrate-setspeed> I<domain> I<bandwidth> Set the maximum migration bandwidth (in Mbps) for a domain which is being