Bug 486308
| Summary: | HVM guest stops running when xm save fails | ||||||||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Jiri Denemark <jdenemar> | ||||||||||
| Component: | xen | Assignee: | Michal Novotny <minovotn> | ||||||||||
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||||||
| Severity: | medium | Docs Contact: | |||||||||||
| Priority: | low | ||||||||||||
| Version: | 5.4 | CC: | areis, clalance, lilu, minovotn, mjenner, xen-maint | ||||||||||
| Target Milestone: | rc | ||||||||||||
| Target Release: | 5.6 | ||||||||||||
| Hardware: | All | ||||||||||||
| OS: | Linux | ||||||||||||
| Whiteboard: | |||||||||||||
| Fixed In Version: | xen-3.0.3-109.el5 | Doc Type: | Bug Fix | ||||||||||
| Doc Text: | Story Points: | --- | |||||||||||
| Clone Of: | Environment: | ||||||||||||
| Last Closed: | 2011-01-13 22:16:28 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: | 514500 | ||||||||||||
| Attachments: |
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Created attachment 332524 [details]
qemu-dm.10617.log
Well, I have tried this on 83-jd2 with my patches (available at http://people.redhat.com/minovotn/xen ) and I was unable to replicate it using this scenario: 1. xm create -c FVguest 2. wait to login 3. make domain working using eg. `find /` in domain console (or ssh) 4. do `xm save FVguest /mnt/small/guest.save` -> error 5. `xm list` still shows domain 6. attach to console for domain, console is working and listing files 7. terminate console and shutdown the guest, system starts shutting down Michal I probably should have made it more clear... xm save guest /mnt/small/guest.save is supposed to fail because of insufficient space on the drive mounted to /mnt/small and not because the path does not exist at all. Ok, thanks for clarification :) It's good to know that ;) Created attachment 404212 [details]
Recreate device model when HVM save fails
This is the patch to recreate device model when xm save on HVM domains fails, also device reinitialization had to be added since otherwise the guest network was not working.
Michal
Created attachment 405944 [details]
New version of device model recreation patch
This is the new version of my patch to recreate device model when HVM guest save fails with the reconnection logic moved to DevController class.
Michal
This bug has been verified in xen-3.0.3-115.el5 The PV guest runs WELL after "xm save" failed. 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/RHBA-2011-0031.html |
Created attachment 332523 [details] xend.log Description of problem: When xm save of an HVM guest fails, the guest stops running. Version-Release number of selected component (if applicable): xen-3.0.3-80.el5, xen-3.0.3-64.el5 How reproducible: always Steps to Reproduce: 1. create an HVM guest 2. xm save guest /mnt/small/guest.save Actual results: The guest stops running, xm list shows no status: fv-rhel5-64 4 511 2 ------ 45.3 Expected results: The guest should remain running as if no xm save command was ever issued Additional info: No qemu-dm is running in dom0 after failed xm save