Le vendredi 25 janvier 2008 à 20:52 +0100, Andre Przywara a écrit : > Laurent Vivier wrote: > > Le vendredi 25 janvier 2008 à 09:18 -0600, Anthony Liguori a écrit : > >> Laurent Vivier wrote: > >>> Hi, > >>> > >>> this patch allows to mount qemu disk images on the host. > >>> > > > > Sorry, I didn't see you did a similar work 19 months ago. > >> Note, the general problem with this approach is that mounting a NBD > >> device locally with write access can lead to dead locks. If you look > >> through the mailing list archives, you'll find a number of conversations > >> on the topic. > I sometimes ago was also working on a nbd implementation for > qcow-images, but I came to the same deadlock conclusion. (At least > theoretically, I didn't finish this as I ran first into debugging > problems and secondly out of time). But IMHO this only applies to > localhost mounts, real network mounting should work (this is actually
As it seems a problem related to the page cache, perhaps we could open the QCOW file with O_DIRECT to avoid the problem ? Laurent -- ----------------- [EMAIL PROTECTED] ------------------ "La perfection est atteinte non quand il ne reste rien à ajouter mais quand il ne reste rien à enlever." Saint Exupéry
