On 08/29/2014 02:07 PM, Luiz Capitulino wrote: > Management software, such as RHEV's vdsm, want to be able to allocate > disk space on demand. The basic use case is to start a VM with a small > disk and then the disk is enlarged when QEMU hits a ENOSPC condition. > > To this end, the management software has to be notified when QEMU > encounters ENOSPC. The solution implemented by this commit is simple: > it extends the BLOCK_IO_ERROR with a 'nospace' key, which is true > when QEMU is stopped due to ENOSPC. > > Note that support for querying this event is already present in > query-block by means of the 'io-status' key. Also, the new 'nospace' > BLOCK_IO_ERROR field shares the same semantics with 'io-status', > which basically means that werror= has to be set to either > 'stop' or 'enospc' to enable 'nospace'. > > Finally, this commit also updates the 'io-status' key doc in the > schema with a list of supported device models. > > Signed-off-by: Luiz Capitulino <lcapitul...@redhat.com> > ---
Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
