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

[Gordan Bobic <gordan@xxxxxxxxxx>]

Tripwire is a good place to start.


Kuba <kuba.0000@xxxxx> wrote:

>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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