Am 28.04.2011 15:46, schrieb Jes Sorensen: > On 04/28/11 15:41, Kevin Wolf wrote: >>>> 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. > > True, but if /tmp is tmpfs, it isn't possible to open things O_DIRECT, > which could also be the source of the problem here.
Not really, -snapshot is very clearly the problem here. Note that what's failing here is not opening the new snapshot but the old temporary image created by -snapshot. Kevin
