On 07/22/2014 02:58 PM, Max Reitz wrote: > Many qemu-img subcommands only read the source file(s) once. For these > use cases, a full write-back cache is unnecessary and mainly clutters > host cache memory. Though this is generally no concern as cache memory > is freely available and can be scaled by the host OS, it may become a > concern with thin provisioning. > > For these cases, it makes sense to allow users to freely specify the > source cache mode (e.g. use no cache at all). > > This commit adds a new switch (-T) for the qemu-img subcommands check, > compare, convert and rebase to specify the cache to be used for source > images (the backing file in case of rebase). > > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > qemu-img-cmds.hx | 16 ++++++------ > qemu-img.c | 78 > ++++++++++++++++++++++++++++++++++++++++++++------------ > qemu-img.texi | 14 +++++++--- > 3 files changed, 80 insertions(+), 28 deletions(-)
Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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