Paul Jakma wrote: > On Mon, 27 Aug 2007, Anthony Liguori wrote: > >> I think this is the right level myself. Advisory locks work okay but >> not all filesystems support them. It's particularly nasty when you have >> a clustered filesystem in the host. I think it would do more harm than >> good to have a feature like that was supposed to provide a safe-guard >> but then frequently didn't work. > ^^^^^^^^^^^^^^^^^^^^^^ > > Are you trying to say that any kind of significant portion of QEMU > users have clustered file-systems? > > I think that's unlikely, and it'd be nice if QEMU by default did a > fcntl() on writeable image files to lock itself from multiple access, > that'd benefit the vast majority of users. > > Let the 0.x% of users who need to run with weird/esoteric fses cope.. > > regards, I'm usually running one "main" qemu instance that has read/write access to the disk file and several others for tests that use the -snapshot option, so I think it's very important to have an easy means of switching this check off.
just my 2 cents, Alexander Graf
