Bug 1161582
| Summary: | Should improve error info when can't find backing file for snapshot | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jun Li <juli> |
| Component: | qemu-kvm-rhev | Assignee: | Jeff Cody <jcody> |
| Status: | CLOSED ERRATA | QA Contact: | Qianqian Zhu <qizhu> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.0 | CC: | chayang, eblake, hhuang, jcody, juzhang, knoel, michen, mkenneth, mrezanin, qguo, qizhu, qzhang, rbalakri, rpacheco, virt-bugs, virt-maint, xfu, xuhan |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | All | ||
| Whiteboard: | |||
| Fixed In Version: | QEMU 2.4.0 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 1084302 | Environment: | |
| Last Closed: | 2016-11-07 20:16:34 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: | 1028276, 1084302 | ||
| Bug Blocks: | |||
The error message has been cleaned up again upstream, so I don't believe this should be an issue anymore, the error message is clear enough now. Verified with: qemu-img-rhev-2.6.0-20.el7.x86_64 qemu-kvm-rhev-2.6.0-20.el7.x86_64 kernel-3.10.0-491.el7.x86_64 Steps: 1. Create image: # qemu-img create -f qcow2 test.qcow2 5G 2. Create snapshot of the image: # qemu-img create -f qcow2 /home/snapshot1.qcow2 -b /home/test.qcow2 3. Remove the backing file: # rm -f test.qcow2 4. Launch guest with the snapshot: # /usr/libexec/qemu-kvm -drive file=snapshot1.qcow2,if=none,id=img -monitor stdio -qmp tcp::8888,server,nowait Result: Prompt error 'Could not open backing file'. qemu-kvm: -drive file=snapshot1.qcow2,if=none,id=img: Could not open backing file: Could not open 'test.qcow2': No such file or directory 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-2016-2673.html |
Version of components: qemu-kvm-rhev-2.1.2-6.el7.x86_64 steps: 1,creat an image via qemu-img. # qemu-img create -f qcow2 test.qcow2 5G 2,boot qemu-kvm as followings: # /usr/libexec/qemu-kvm -drive file=./test.qcow2,if=none,id=img \ -monitor stdio -qmp tcp::8888,server,nowait 3,create another two qcow2 format files via qemu-img. # qemu-img create -f qcow2 /home/test1.qcow2 500M Formatting '/home/test1.qcow2', fmt=qcow2 size=524288000 encryption=off cluster_size=65536 lazy_refcounts=off # qemu-img create -f qcow2 /home/test2.qcow2 500M 4,do snapshot via qmp. { "execute": "blockdev-snapshot-sync", "arguments": { "device": "img", "snapshot-file": "/home/test1.qcow2", "format": "qcow2", "mode": "absolute-paths" } } { "execute": "blockdev-snapshot-sync", "arguments": { "device": "img", "snapshot-file": "/home/test2.qcow2", "format": "qcow2", "mode": "absolute-paths" } } Results: After step 4, {"execute":"qmp_capabilities"} {"return": {}} { "execute": "blockdev-snapshot-sync", "arguments": { "device": "img", "snapshot-file": "/home/test1.qcow2", "format": "qcow2", "mode": "absolute-paths" } } {"return": {}} { "execute": "blockdev-snapshot-sync", "arguments": { "device": "img", "snapshot-file": "/home/test2.qcow2", "format": "qcow2", "mode": "absolute-paths" } } {"error": {"class": "GenericError", "desc": "Could not open '/home/test1.qcow2': Could not open backing file: Could not open '/home/./test.qcow2': No such file or directory: No such file or directory"}}