This bug has been copied from bug #591548 and has been proposed to be backported to 5.5 z-stream (EUS).
in kernel-2.6.18-194.28.1.el5 linux-2.6-virt-xen-fix-connected-state-after-netback-dev-closed.patch
Hi, Paolo Would you please help to provide the more exact steps to reproduce this bug?
You can install a Windows VM with PV drivers and disable then enable the PV network cards from Device Manager. Without the patch the domain will hang after just a few tries and you will have to destroy the domain. 5 are enough to confirm the bug is verified.
Hi, Paolo, thanks for your clarification. Tested with: i386 and x86_64 host Win2008-64 guest Win2003-32 guest component version: xen-3.0.3-120.el5 xenpv-win-1.3.1-1.el5 Steps: 1. install xenpv-win-1.3.1-1 on Windows guest 2. disable then enable the PV NIC from Device Manager 3. repeat step2 Reproduced the bug with kernel-xen-2.6.18-194.el5: For Win2003-32 guest, it takes one or two disable/enable cycles to make guest hang. For Win2008-64 guest, it takes only one disable/enable cycle to make guest hang. Verified the bug with kernel-xen-2.6.18-194.30.1.el5: For both guests, disable/enable work smoothly, and after five disable/enable cycles the guests still work fine without hang. According the test result above, move to VERIFIED.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-0004.html