I am running some qemu-kvm virtual machines via libvirt using Ceph RBD as the
back-end storage. Today I was testing an update to libvirt-1.0.6 on one of my
hosts and discovered that it includes this change:
[libvirt] [PATCH] Forbid use of ':' in RBD pool names
...People are known to be abusing the lack of escaping in
current libvirt to pass arbitrary args to QEMU.
I am one of those people--I have been storing colon-separated arguments in my
disk source 'name' attribute to control the RBD cache settings on a per-volume
basis. Under libvirt-1.0.6 such VM's refuse to start:
error: Failed to start domain foo
error: unsupported configuration: ':' not allowed in RBD source volume name
'mypool/foo:rbd_cache_size=268435456:rbd_cache_max_dirty=134217728:rbd_cache_target_dirty=33554432:rbd_cache_max_dirty_age=5'
So my question is how do I control the cache settings now?
Thanks,
JN
_______________________________________________
libvirt-users mailing list
libvirt-users@redhat.com
https://www.redhat.com/mailman/listinfo/libvirt-users
