RE: [Xen-devel] RE: freezing when using GPLPV drivers (including Dom0)

["Ian Pratt" <Ian.Pratt@xxxxxxxxxxxxx>]

> 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.

Ian

 
> I could try switching to tap:aio but I don't think that my GPLPV
> drivers
> work in that configuration... maybe time to find out why :)
> 
> Thanks
> 
> James
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel