Am Montag 23 Mai 2011 04:30:12 schrieb Jim Fehlig:
Jim Fehlig wrote:
Markus Groß wrote:
This patch adds save/restore functionality to the libxl driver.
It is a v2 of this patch: https://www.redhat.com/archives/libvir-list/2011-April/msg00338.html
v2: * header is now padded and has a version field * the correct restore function from libxl is used * only create the restore event once in libxlVmStart
Hi Markus,
Finally found time to try your patch. Thanks for the patience :-).
However I ran into a reproducible segfault. Assume you saved a vm with: # virsh save domU foo.img
I think the problem actually lies in the save function. The domain does not appear to be cleaned up properly. From xl's perspective after virsh save domU foo.img
xen33: # xl list Name ID Mem VCPUs State Time(s) Domain-0 0 2023 8 r----- 330.0 (null) 11 1 2 --pssd 27.1
The orphaned domain disappears after libvirtd restart.
I manged to track down this problem, patch posted to xen-devel
http://lists.xensource.com/archives/html/xen-devel/2011-05/msg01314.html
Great! I attached the current version of the save/restore patch. It is rebased against the current master.
If you restore the save image, destroy the vm and restore it again, a segfault occurs: # virsh restore foo.img # virsh destroy domU # virsh restore foo.img # segfault
But I still see the segfault, in addition to domain not booting and consuming 100% cpu on first restore :-(. I'll look at these issues next.
Regards, Jim