Danilo Godec 07/14/11 12:34 PM >>> No errors are logged in /var/log/xen/* and live migration works for Centos DomU's, which suggests that the problem is in the DomU (kernel)... Unfortunately I have no idea how to 'catch' what's going on there.
Using the xenctx utility (in Dom0) you should be able to see where the guests are spinning (which is what I assume they are doing).
Then there's HVM and PV drivers I created an OpenSuSE 11.4 HVM DomU, which worked OK. But after installing xen-kmp-default, the DomU doesn't boot anymore. It loads the initrd, it also mounts the root filesystem, but then it 'hangs' at 'Loading drivers, configuring devices'. After a while, there is a shower of I/O errors:
end_request: I/O error, dev sda, sector XXXXXXXXX
Other then installing the 'xen-kmp' packages, should I do something else?
That seems indeed necessary in this case (albeit I would have thought this gets taken care of automatically): You may need to make sure that the Xen blkfront driver loads before the ATA one that was servicing your disk before installing the KMP. Jan