2011/4/7 Stefan Hajnoczi <stefanha@xxxxxxxxx>: > On Thu, Apr 07, 2011 at 10:14:03AM +0900, Yoshiaki Tamura wrote: >> 2011/3/29 Josh Durgin <josh.durgin@xxxxxxxxxxxxx>: >> > The new format is rbd:pool/image[@snapshot][:option1=value1[:option2=value2...]] >> > Each option is used to configure rados, and may be any Ceph option, or "conf". >> > The "conf" option specifies a Ceph configuration file to read. >> > >> > This allows rbd volumes from more than one Ceph cluster to be used by >> > specifying different monitor addresses, as well as having different >> > logging levels or locations for different volumes. >> > >> > Signed-off-by: Josh Durgin <josh.durgin@xxxxxxxxxxxxx> >> > --- >> > block/rbd.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++-------- >> > 1 files changed, 102 insertions(+), 17 deletions(-) >> > >> > diff --git a/block/rbd.c b/block/rbd.c >> > index cb76dd3..bc3323d 100644 >> > --- a/block/rbd.c >> > +++ b/block/rbd.c >> > @@ -22,13 +22,17 @@ >> > /* >> > * When specifying the image filename use: >> > * >> > - * rbd:poolname/devicename >> > + * rbd:poolname/devicename[@snapshotname][:option1=value1[:option2=value2...]] >> >> I'm not sure IIUC, but currently this @snapshotname seems to be >> meaningless; it doesn't allow you to boot from a snapshot because it's >> read only. Am I misunderstanding or tested incorrectly? > > Read-only block devices are supported by QEMU and can be useful. I agree. My expectation was that @snapshotname is introduced to have writable snapshot. Yoshi > > Stefan > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
