Thanks for the comments. Forgot to mention it but yes, I do have "cache=none" configured for the migrated domain, as <driver name='qemu' type='raw' cache='none'/> in my XML file, and doubled-checked before and after the migration. In fact, if cache is not set to "none", virsh will issue a warning and refuse to do the live migration. Brett On Sun, Nov 25, 2012 at 7:12 PM, Henrik Ahlgren <pablo@seestieto.com> wrote:
On Sun, Nov 25, 2012 at 06:57:19PM +0800, Xinglong Wu wrote:
Is there anybody having the similiar experience with live migration on non-shared storage? It apparently leads to failed migrations in libvirt but no cirtical errors ever reported.
Make sure you have your driver cache set to "none". I've seen similar things happen with other cache settings, but with "none" it works just fine (but of course that might impose an i/o performance penalty in some cases?). I think the default is "unsafe" in 0.9.7 and later? It would be nice if the cache settings were documented more clearly.