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xen-users
Re: [Xen-users] domU shell prompt freezes after live migration
The suse 2.6.34-xen and 2.6.37-xen works fine in my tests too.
3.1 seems be fine too but have some issues with ballooning (fixes
was commited after 3.1 release) and with time (in xen 3).
On 25.10.2011 21:45, David Della Vecchia wrote:
Your welcome. Looks like you fixed the problem by
regressing, i tried to fix it by upgrading. I was able to fix my
issue of the console freezing after the save and restore but now i
am unable to get the networking to work in squeeze domu's after
restore.
I was told in the #xen channel to use centos5 as my failsafe test
and so far it has earned that title. Throughout all my tests the
centos5 domU ALWAYS works with everything. Debian seems to be more
finicky unfortunately.
Perhaps i will regress as you have and see if that fixes my
networking problem.
Glad to help,
DDV
On Tue, Oct 25, 2011 at 1:45 PM, Benjamin
Weaver <benjamin.weaver@xxxxxxxxxxxxx>
wrote:
David,
We arrived at what may be a related solution. Instead of
lucid Ubuntu for the domUs, we dropped back to lenny
(2.6.26-2-xen-amd64). The lenny domUs xm store, xm save, and
migrate correctly.
None of this explains why on previous installations of our
cluster (ocfs2 on SAN + 2 Debian Squeeze dom0s), we did not
have problems with lucid vms. But now the lenny s work.
You put us onto the right track with this kernel version
problem, and we may well soon be upgrading our dom0s as you
suggested.
Thanks very much for your help.
On 25/10/11 15:47, David Della Vecchia wrote:
Yep, 2.6.32-5-xen-amd64 is the
one i personally confirm fails at live in this regard.
I run xen4.1.1 in debian wheezy and the 2.6.39.4
kernel i got from kernel.org
works flawlessly with the debian squeeze domU's
-DDV
On Tue, Oct 25, 2011 at 10:37
AM, Benjamin Weaver <benjamin.weaver@xxxxxxxxxxxxx>
wrote:
Thanks,
David,
This could be very useful. We are running Debian
Squeeze for the dom0 (kernel:
2.6.32-5-xen-amd64), but Ubuntu (lucid) for the
domUs.
Ben
On 25/10/11 15:19, David Della Vecchia
wrote:
Are you on debian by
chance? I had the exact same issue, it has
to do with the kernel you are using for
the domU.
Here is the bug report describing it: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644604
I've had this occur with other kernel's
i've built, not just debian provided ones.
I was able to build a 2.6.39.4 and a 3.0.1
kernel last night that restored my ability
to do xm save and restore without the
console lock up.
Hope this helps.
-David
On Tue, Oct 25,
2011 at 9:46 AM, Benjamin Weaver <benjamin.weaver@xxxxxxxxxxxxx>
wrote:
I have
narrowed down and further defined the
problem using xm commands:
1. the problem does not have to do
with migration from one node to
another per se:
an xm save and subsequent xm restore
done from either box, without
migration, reproduces the problem. In
each case a vm is produced that I can
ping and login to, but which produces
the frozen prompt.
I have also tried the following:
2. opened permissions on .img files
under /ocfs2SAN/domains
to no avail,
therefore not a permissions problem
3. opened up sysctl buffers on both
boxes
to no avail
not a sys buffers problem
Might I perhaps have a file system or
cluster configuration problem?
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