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xen-users
[Xen-users] hard to pin down DomU/0 hanging problem.
I wish I could provide a better description than this but this is the
best I have right now.
I have a dual cpu quadcore optron system with 32g of ram.
The base os is Centos 5.3 with updates as of a week or so ago(just
checking again I found a new set this morning).
I have several other systems with more or less the same config that have
been running for months on end with no problems.
I get the following from xm list.
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 1000 8 r----- 518.4
druid 3 511 1 r----- 14.1
imap 4 2048 1 -b---- 24.4
iwt 5 511 1 -b---- 29.7
l2tp1 6 1000 1 -b---- 21.5
oxmail 7 2000 1 -b---- 30.6
oxruby 8 1400 1 r----- 21.4
radius 9 256 1 -b---- 37.8
svnserver 10 500 1 ------ 19.1
vm-web-1 11 2000 1 -b---- 17.1
Note the svnserver status.
On the next xm list it went back to the usual blocked but I have seen
this same status for all the DomU's.
At this point the DomU's are hung.
I have also seen times that are very large -ve numbers.
Trying to destroy the DomU sometimes ends in a Zombie.
Restarting xend ends up with lots of zombie processes.
Some time the Dom0 networking will hang also althought I can still get
access via the serial console.
I see nothing in /var/log/messages and the xen logs have not been much help.
The system will run normally for several days before this problem crops up.
Any kind of help or pointers of where to start looking would be greatly
appreciated.
--
Alvin Starr || voice: (416)585-9971x690
Interlink Connectivity || fax: (416)585-9974
alvin@xxxxxxxxxx ||
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