[Xen-users] LVM2 snapshots and XEN = problem :(

[Anton Khalikov <anton@xxxxxxxxxxx>]

Hello guys

Does anyone use lvm2 backends for domU storages ? I do and I wanted to 
use lvm's snapshot feature to make backups of domUs in background but I 
got the following problem.
When I create a snapshot LV and copy data from it to backup storage it 
works perfect.
Then I do umount and then lvremove. lvremove asks me if I really want to 
remove the volume and then just hangs forever. In the same time affected 
domU almost hangs too - it becomes very slow but still live.
The only solution of this situation is to shutdown domU, deactivate 
domU's LV and then run lvremove for shapshot volume.
I googled about this and found that it may be a bug related to SMP (I 
use P-IV with hyperthreading enabled) but I can't disable or enable SMP 
because it's done by xen itself.
Any suggestions/ideas ?

--
Best regards
Anton Khalikov

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