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Bug 537800

Summary: [RHEL5 Xen]: Multiple guest save/restore failures
Product: Red Hat Enterprise Linux 5 Reporter: Michal Novotny <minovotn>
Component: kernel-xenAssignee: Xen Maintainance List <xen-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: low    
Version: 5.4CC: areis, clalance, drjones, llim, mshao, pbonzini, xen-maint, yuzhang, yuzhou
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 513537 Environment:
Last Closed: 2011-01-28 14:40:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 514490    

Comment 1 Chris Lalancette 2009-11-16 12:27:34 UTC 
Save/restore is not a frequently tested feature, but it shouldn't be *this* broken.  I know I've tested it with 5.4 vintage packages, and it was at least working for basic cases.  I'm setting the flags to 5.5, although my guess is that this is either a configuration issue or a hardware-specific issue.

Chris Lalancette
Comment 8 Yuyu Zhou 2011-01-28 10:01:12 UTC 
I couldn't found xen3.0.3-96 package. So I repeat the experiments on xen-3.0.3-80 and xen-3.0.3-120. 

1)xen-3.0.3-80, kernel-xen-2.6.18-164.el5 or kernel-xen-2.6.18-172
RHEL5 HVM guests and PV 64bit guest works fine.
RHEL4 PV 32bit guest and RHEL5 PV 32bit guest cann't be save and restored and turn into suspend state.
RHEL4 HVM guests sometimes crash and reboot, sometimes works fine, sometimes crash and turn into zombie guest.

2)xen-3.0.3-120, kernel-xen-2.6.18-238.el5
all guests works well after single/multi save/restore in sufficient or insufficient space.
But sometime zombie guests may show up after destroying the save-failed PV guests(reported in Bug #673456).
Comment 9 Paolo Bonzini 2011-01-28 14:40:14 UTC 
Closing per comment 8, thanks!