Bug 1175123
| Summary: | Inactive external snapshot can't work after libvirtd restart | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Shanzhi Yu <shyu> | |
| Component: | libvirt | Assignee: | Libvirt Maintainers <libvirt-maint> | |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | |
| Severity: | high | Docs Contact: | ||
| Priority: | high | |||
| Version: | 7.1 | CC: | dyuan, eblake, mzhan, pkrempa, rbalakri, yanyang | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | libvirt-1.2.13-1.el7 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1175147 (view as bug list) | Environment: | ||
| Last Closed: | 2015-11-19 05:59:11 UTC | Type: | Bug | |
| 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: | 1175147 | |||
Upstream patch:
commit 9f974858dde667bda55fbfbec56aa16d9ced870d
Author: Shanzhi Yu <shyu>
Date: Sun Dec 7 00:32:18 2014 +0800
qemu: snapshot: inactive external snapshot can't work after libvirtd restart
When create inactive external snapshot, after update disk definitions,
virDomainSaveConfig is needed, if not after restart libvirtd the new snapshot
file definitions in xml will be lost.
https://www.redhat.com/archives/libvir-list/2015-January/msg00435.html
Verified on libvirt-1.2.14-1.el7.x86_64 # virsh list --all Id Name State ---------------------------------------------------- - testvm3 shut off # virsh domblklist testvm3 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/vm1.qcow2 # virsh snapshot-create-as testvm3 s1 --disk-only Domain snapshot s1 created # virsh domblklist testvm3 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/vm1.s1 # service libvirtd restart # virsh domblklist testvm3 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/vm1.s1 # virsh snapshot-create-as testvm3 s2 --disk-only --no-metadata Domain snapshot s2 created # virsh domblklist testvm3 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/vm1.s2 # service libvirtd restart Redirecting to /bin/systemctl restart libvirtd.service # virsh domblklist testvm3 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/vm1.s2 According to comment #3, mark it as verified Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-2202.html |
Description of problem: Inactive external snapshot can't work after libvirtd restart Version-Release number of selected component (if applicable): libvirt-1.2.8-10.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Prepare a shut off guest # virsh list --inactive Id Name State ---------------------------------------------------- - rhel7 shut off 2.Create external snapshot for shot off guest # virsh snapshot-create-as rhel7 ss --disk-only Domain snapshot ss created 3.Check guest source file # virsh dumpxml rhel7|grep "source file" <source file='/var/lib/libvirt/images/rhel7-qcow2v3.ss'/> 4.Restart libvirt, do check in step 3 again # systemctl restart libvirtd.service # virsh dumpxml rhel7|grep "source file" <source file='/var/lib/libvirt/images/rhel7-qcow2v3.img'/> Actual results: Expected results: source file should point to new snapshot file in step 4 Additional info: This was first reported by Eric Blake http://www.redhat.com/archives/libvir-list/2014-December/msg00369.html