Re: Oddities with recent xen and/or 6.1_STABLE

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Mar 03, 2015 at 08:06:10PM +1300, Mark Davies wrote:
> I've just updated our xen Dom0's and DomU's to a recent 6.1_STABLE and 
> xen{kernel,tools}42 packages, from ones from a few months ago and have noticed 
> two oddities/issues.
> 
> 1) Our two windows hvm clients have "memory = 2048" set in their xen config 
> files but xl list reports "2043"
> Name                                ID   Mem VCPUs      State   Time(s)
>              [...]
> ad2                                 12  2043     1     -b----    8761.5
> leper                               14  2043     1     -b----   10094.4

On Xen 4.1 I also see the memory usage is not exactly the amout
specified in the config file for HVM. It may be because qemu-dm is
using some.

> 
> 
> This might have been happening previously but hadn't noticed till now.
> 
> 
> 2) One of my netbsd DomU's boots fine and generally seems to work OK but has 
> issues accessing kmem
> 
> Mar  3 19:33:16 bats rpc.rstatd[5564]: can't read ifnet queue head from kmem
> 
> % netstat -r
> netstat: kvm_read: Bad address
>     [...]
> 
> This was definitely working before the update and all the other DomU's (that 
> share the same software versions and kernel) don't have the problem.

Do you have a /netbsd in this domU ? Does it match the booted kernel ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--