Re: [Xen-users] GPU passthrough on Xen 4.4.0, FLReset-

[Kuba <kuba.0000@xxxxx>]

W dniu 2014-06-06 13:50, Gordan Bobic pisze:
> On 2014-06-06 12:36, Kuba wrote:
> > W dniu 2014-06-06 12:15, Gordan Bobic pisze:
> > > On 2014-06-06 10:53, Kuba wrote:
> > > > Dear Gordan and David
> > > >
> > > > Thank you both for lots of valuable info and clues. It seems some of
> > > > my issues might be hardware/BIOS related, so I'm going to look into it
> > > > (among other things).
> > > >
> > > > Gordan, I can see you use a ZVOL as your VM's storage, have you ever
> > > > tried to run dom0 with root on ZFS?
> > > No, I always have dom0 rootfs on a stable in-kernel FS that is
> > > reasonably unlikely to blow up in my face when I upgrade the
> > > kernel. IMO, rootfs is sufficiently small and easy to back up
> > > and restore that there is no obvious advantage to having it
> > > on ZFS.
> > >
> > > There is too much forward/backward incompatibility
> > > to allow for old modules to work with new kernels, which
> > > makes kernel upgrades problematic, and to gain full advantage
> > > of ZFS you need to put /boot on ZFS as well, which means
> > > custom patched grub, and it all adds up to far too much
> > > effort for negligible benefit.
> > >
> > > I do use ZFS for everything else, though.
> > I certainly do agree with all that. Having entire dom0 on ZFS is just
> > a little wish of mine for one main reason - data corruption detection
> > and self-healing.
> That is all well and good, and I hope it gets there at some point,
> but in reality the rootfs is a relatively small 99% write-once
> medium, so keeping it backed up and checked is not as daunting
> as it is for other data storage.
A little off-topic question - are there any recommended solutions that 
allow to at least detect (if not heal automagically) bit rot in root 
file system? While 99.9% of my data is protected with ZFS and ECC RAM, 
the possibility that some bit of kernel code might get read flipped 
keeps me awake at night ;)
Kuba

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