Michael Mey
2005-Dec-07 15:00 UTC
[Xen-users] live migration with xen 2.0.7 with fibre channel on Debian - help needed
Hi,
I''d like to test the stability of live migration during heavy load of
domU.
scenario:
- both dom0s and domU are running on Debian Sarge.
- script on dom0 triggers live-migration to the other dom0
- domU is running I/O tests, e.g. bonnie++
- domUs root- (ext3) and swap fs is stored on two partitions in a san
- san is connected using fibre channel cards to both dom0s
- san in dom0 works fine (tested with bonnie++ and own consistency test)
observation:
- migration works several times, usually something between 10 and 30 times
- then something strange happens:
A) either domU has completely disappeared on both dom0s
xend.log on the target host of the last migration says:
<snip>
[2005-12-06 15:55:31 xend] INFO (XendRoot:113) EVENT> xend.console.create
[14,
14, 9614]
[2005-12-06 15:55:32 xend] INFO (XendRoot:113) EVENT> xend.domain.create
[''debian1'', ''14'']
[2005-12-06 15:56:02 xend] DEBUG (blkif:203) Connecting blkif to event channel
<BlkifBackendInterface 14 0> ports=16:4
[2005-12-06 15:56:02 xend] DEBUG (XendDomain:244) XendDomain>reap> domain
died
name=debian1 id=14
[2005-12-06 15:56:02 xend] INFO (XendDomain:568) Destroying domain:
name=debian1
</snip>
xfrd.log on both dom0s says migration was successful
OR
B) domU is in paused-state on the target machine after migration,
xend.log and xfrd.log seem to be ok on both dom0s
domU _cannot_ be unpaused nor directly accessed using xm console
xm vbd-destroy is working
the only thing that can be done is xm destroy.
The thing I am wondering about is why domU suddenly gets crashed after several
successful migrations.
Any help or ideas would be appreciated.
Regards,
Michael
--
----------------------------------------------------------------------------------------
Michael Mey
Thinking Objects Software GmbH | mailto: michael.mey@to.com
Lilienthalstrasse 2/1 | phone: +49 711 88770-147
70825 Stuttgart-Korntal, Germany | fax: +49 711 88770-449
----------------------------------------------------------------------------------------
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