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Description of problem: ABI check get wrong error message when restore guest with modified xml How producible 100% Build: libvirt-2.0.0-9.el7.x86_64 Steps: 1. start a guest #virsh dumpxml rhel7 .... <serial type='pty'> <source path='/dev/pts/2'/> <target type='isa-serial' port='1'/> <alias name='serial0'/> </serial> <console type='pty'> <source path='/dev/pts/2'/> <target type='serial' port='1'/> <alias name='serial0'/> </console> .... #virsh dumpxml rhel7 > rhel7.xml #virsh save rhel7 r7.save modified xml #vi rhel7.xml ... <serial type='pty'> <target type='isa-serial' port='1'/> </serial> ... change to: ... <serial type='pty'> <target type='pci-serial' port='1'/> </serial> ... restore guest with xml # virsh restore r7.save --xml rhel7.xml error: Failed to restore domain from r7.save error: unsupported configuration: Target controller type pci does not match source virtio-serial Actual result error: unsupported configuration: Target controller type pci does not match source virtio-serial Expected result error: unsupported configuration：Target serial type pci-serial does not match source isa-serial
Patch proposed upstream: https://www.redhat.com/archives/libvir-list/2017-March/msg00109.html
Pushed upstream: commit b3388de7f26e6e62a3cf67a12481fdfbf16fc5e4 Author: Michal Privoznik <mprivozn> AuthorDate: Fri Mar 3 10:45:31 2017 +0100 Commit: Michal Privoznik <mprivozn> CommitDate: Wed Mar 8 10:09:15 2017 +0100 qemuDomainSaveImageUpdateDef: Don't overwrite errors from virDomainDefCheckABIStability https://bugzilla.redhat.com/show_bug.cgi?id=1379200 When we are restoring a domain from a saved image, or just updating its XML in the saved image - we have to make sure that the ABI guests sees will not change. We have a function for that which reports errors. But for some reason if this function fails, we call it again with slightly different argument. Therefore it might happen that we overwrite the original error and leave user with less helpful one. Signed-off-by: Michal Privoznik <mprivozn> v3.1.0-81-gb3388de7f
To POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2017-March/msg00218.html
Verified the issue with label libvirt-3.1.0-2.el7.x86_64 and the result is as below. # virsh restore /tmp/rhel7.save --xml rhel7.xml error: Failed to restore domain from /tmp/rhel7.save error: unsupported configuration: Target serial type pci-serial does not match source isa-serial
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://access.redhat.com/errata/RHEA-2017:1846