[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] RE: freezing when using GPLPV drivers (including Dom0)
> > > One other thing I didn't mention - I am using sparse files as my disk > > images, using 'file:' under Xen. Again, not the highest performing > > configuration, but the restore process we are using needs to see disks > > at least as big as those that were backed up originally, and I just > > don't have 2TB of disk lying around! The data access is DomU -> > blkback > > -> /dev/loopX -> file(sparse) -> filesystem(xfs) -> LVM -> E200... > > that's a lot of room for stuff to go wrong in isn't it? > > Which loop driver are you using? The std loop driver is well known to > deadlock under high write load. I think this may have been fixed with > loop-ng, but you'd likely be better off using tap:aio. > I've never even heard of loop-ng... I just did a 'find' for any kernel module with 'loop' in the name and didn't see anything called 'loop-ng'... is it something I need to enable in the kernel config? I just tried tap:aio but the DomU hung for ages after starting the restore... I'm just about to investigate. Thanks James _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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