On Wed, Jul 17, 2013 at 10:03:54PM +0800, Wenchao Xia wrote: > Signed-off-by: Wenchao Xia <xiaw...@linux.vnet.ibm.com> > --- > qemu-nbd.c | 2 ++ > qemu-nbd.texi | 3 +++ > 2 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/qemu-nbd.c b/qemu-nbd.c > index 46be2b2..8eeee33 100644 > --- a/qemu-nbd.c > +++ b/qemu-nbd.c > @@ -80,6 +80,8 @@ static void usage(const char *name) > "Block device options:\n" > " -r, --read-only export read-only\n" > " -s, --snapshot use snapshot file\n" > +" -l, --snapshot-load temporarily load an internal snapshot and export it > as\n" > +" an read-only device, format is > 'id=[ID],name=[NAME]'\n"
Does it really export it read-only? I think you'll get an error unless you pass qemu-nbd --read-only.
