Am 28.04.2011 15:21, schrieb Jes Sorensen: > On 04/27/11 17:05, Luiz Capitulino wrote: >>> +If a new image file is specified, the new image file will become the >>>> +new root image. If format is specified, the snapshot file will be >>>> +created in that format. Otherwise the snapshot will be internal! >>>> +(currently unsupported). >> Sorry for the stupid question, but what's a "new root image"? Also, all >> these assumptions seem human features to me, as it can save some typing >> and I can poke around to see where the snapshots are stored. >> >> All arguments should be mandatory in QMP, IMO. > > Sorry, but there is absolutely no reason to make all arguments > mandatory. Sure it can be done, but the only result is a separate > handling function for it, so we got more almost identical, but still > different code to maintain. > >> Finally, what's the expect behavior when -snapshot is used? I'm getting >> this: >> >> (qemu) snapshot_blkdev ide0-hd0 snap-test >> Could not open '/tmp/vl.6w8YXA' >> (qemu) > > What type of file system is your /tmp? You need to provide full path to > the snapshot file if you don't want it created next to where your qemu > binary is being executed.
I think the problem is that this is a temporary file, i.e. unlinked directly after it has been opened. Trying to reopen a deleted file is a bad idea. Kevin
