Fedora 11/12 kernels as xen domU

[Originally sent this to fedora-list but thought it may get more attention here.] Is anyone having any stability with the fedora kernels running as a Xen DomU. Dom0 is a Centos 5.4 2.6.18-164.9.1.el5xen kernel. These fedora kernels seem to lockup (processes get stuck in D state) whenever put under any load: kernel-2.6.30.10-105.fc11.x86_64 kernel-2.6.31.6-166.fc12.x86_64 kernel-2.6.31.9-174.fc12.x86_64 Yes, I tried a fedora 11 kernel on a fedora 12 system. This is the most stable for me. Here are some bugzilla entries (one posted by me) that point to this problem: kernel 2.6.31 processes lock up in D state https://bugzilla.redhat.com/show_bug.cgi?id=550724 FC12 2.6.31.9-174.fc12.x86_64 hangs under heavy disk I/O https://bugzilla.redhat.com/show_bug.cgi?id=551552 -- Norman Gaywood, Computer Systems Officer University of New England, Armidale, NSW 2351, Australia ngaywood(a)une.edu.au Phone: +61 (0)2 6773 3337 http://mcs.une.edu.au/~norm Fax: +61 (0)2 6773 3312 Please avoid sending me Word or PowerPoint attachments. See http://www.gnu.org/philosophy/no-word-attachments.html