Re: [libvirt] [PATCH] qemu: Advertise qcow2discard/ in capabilities if discard works for qcow2 backing files.

2014-03-10 Thread Richard W.M. Jones
Please disregard this patch. Dan pointed out that it is possible to read the hypervisor version using virConnectGetVersion. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful

[libvirt] [PATCH] qemu: Advertise qcow2discard/ in capabilities if discard works for qcow2 backing files.

2014-03-09 Thread Richard W.M. Jones
Qemu since 1.5 supports discard. However until qemu 1.6 it didn't work for qcow2 files. Ref: http://wiki.qemu.org/ChangeLog/1.5 http://wiki.qemu.org/ChangeLog/1.6 If qemu = 1.6, add this to guest capabilities: features drivediscard/ qcow2discard/ --- /features ---