Bug 1086121
| Summary: | Improve the error message when failed to restore a guest with a not availabe disk with startupPolicy='optional' | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | chhu |
| Component: | libvirt | Assignee: | Pavel Hrdina <phrdina> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | low | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.1 | CC: | ajia, dyuan, mzhan, pzhang, rbalakri, shyu |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-1.2.7-1.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-03-05 07:31:58 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: | |||
commit 5098f671f0dfaddb8788a959906c47b0cb4c87cc
Author: Pavel Hrdina <phrdina>
Date: Fri Jun 27 16:34:07 2014 +0200
qemu_domain: fix startup policy for disks
https://bugzilla.redhat.com/show_bug.cgi?id=1086121
We now support startupPolicy='optional' for disks, but this
should work only for cold boot, not for restore or migrate.
Signed-off-by: Pavel Hrdina <phrdina>
verify vision:
libvirt-1.2.8-5.el7.x86_64
qemu-kvm-rhev-2.1.2-4.el7.x86_64
kernel-3.10.0-191.el7.x86_64
steps:
1.
define and start a guest with one disk with startupPolicy='optional'
# virsh destroy r7new ; virsh start r7new
Domain r7new destroyed
Domain r7new started
# virsh dumpxml r7new | grep disk -A8
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/libvirt/images/r7new.img'/>
<backingStore/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/libvirt/images/qcow2-1.img' startupPolicy='optional'/> ------>optional
<backingStore/>
<target dev='hdb' bus='ide'/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
2. move the disk which is with startupPolicy='optional'
# mv qcow2-1.img qcow2-1.img.bak
3. save the guest
# virsh save r7new r7new.save
Domain r7new saved to r7new.save
4.try to restore the guest
# virsh restore r7new.save
error: Failed to restore domain from r7new.save
error: Cannot access storage file '/var/lib/libvirt/images/qcow2-1.img' (as uid:107, gid:107): No such file or directory
it has a clear error message.
verified.
add verify scenario:
version:
libvirt-1.2.8-5.el7.x86_64
qemu-kvm-rhev-2.1.2-5.el7.x86_64
kernel-3.10.0-196.el7.x86_64
steps:
1> test disk with startupPolicy='optional' for cold boot
1.1>
start a healthy guest with one disk with startupPolicy='optional':
# virsh dumpxml r7new | grep disk -A 8
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/libvirt/images/r7new.img'/>
<backingStore/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/qcow2-2.img' startupPolicy='optional'/>
<backingStore/>
<target dev='hdb' bus='ide'/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
1.2> move the disk which is with startupPolicy='optional'
# mv qcow2-2.img qcow2-2.img.bak
# ll /var/lib/libvirt/images/qcow2-2.img
ls: cannot access /var/lib/libvirt/images/qcow2-2.img: No such file or directory
1.3>try to cold boot ,disk device with startupPolicy='optional' will be removed. and boot up successfully.
# virsh destroy r7new ; virsh start r7new
Domain r7new destroyed
Domain r7new started
# virsh dumpxml r7new | grep disk -A 8
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/libvirt/images/r7new.img'/>
<backingStore/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
2> test cdrom device for save / restore
2.1> start a healthy guest with cdrom device with startupPolicy='optional':
# virsh dumpxml r7new | grep cdrom -A 8
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/cdrom.iso' startupPolicy='optional'/>
<backingStore/>
<target dev='hdb' bus='ide'/>
<readonly/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
2.2> move the cdrom file away
# mv cdrom.iso cdrom.iso.bak
# ll /var/lib/libvirt/images/cdrom.iso
ls: cannot access /var/lib/libvirt/images/cdrom.iso: No such file or directory
2.3>save the guest successfully
# virsh save r7new r7new.save
Domain r7new saved to r7new.save
2.4> restore the guest successfully
# virsh restore r7new.save
Domain restored from r7new.save
# virsh dumpxml r7new | grep cdrom -A 8
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source startupPolicy='optional'/>
<backingStore/>
<target dev='hdb' bus='ide'/>
<readonly/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
3> test cdrom device for code boot
3.1> start a healthy guest with cdrom device with startupPolicy='optional':
# virsh dumpxml r7new | grep cdrom -A 8
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/cdrom.iso' startupPolicy='optional'/>
<backingStore/>
<target dev='hdb' bus='ide'/>
<readonly/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
3.2>move the cdrom file away
# mv cdrom.iso cdrom.iso.bak
# ll /var/lib/libvirt/images/cdrom.iso
ls: cannot access /var/lib/libvirt/images/cdrom.iso: No such file or directory
3.3> try to cold boot , boot up successfully
# virsh destroy r7new ; virsh start r7new
Domain r7new destroyed
Domain r7new started
# virsh dumpxml r7new | grep cdrom -A 8
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source startupPolicy='optional'/>
<backingStore/>
<target dev='hdb' bus='ide'/>
<readonly/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
4> test floppy device for save / restore
4.1> start a healthy guest with floppy device with startupPolicy='optional':
# virsh dumpxml r7new | grep floppy -A 8
<disk type='file' device='floppy'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/floppy.img' startupPolicy='optional'/>
<backingStore/>
<target dev='fda' bus='fdc'/>
<alias name='fdc0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
4.2>move the floppy file away
# mv floppy.img floppy.img.bak
# ll /var/lib/libvirt/images/floppy.img
ls: cannot access /var/lib/libvirt/images/floppy.img: No such file or directory
4.3>save the guest successfully
# virsh save r7new r7new.save
Domain r7new saved to r7new.save
4.4>restore the guest successfully
# virsh restore r7new.save
Domain restored from r7new.save
# virsh dumpxml r7new | grep floppy -A 8
<disk type='file' device='floppy'>
<driver name='qemu' type='raw'/>
<source startupPolicy='optional'/>
<backingStore/>
<target dev='fda' bus='fdc'/>
<alias name='fdc0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
5> test floppy device for cold boot
5.1> start a healthy guest with floppy device with startupPolicy='optional':
# virsh dumpxml r7new | grep floppy -A 8
<disk type='file' device='floppy'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/floppy.img' startupPolicy='optional'/>
<backingStore/>
<target dev='fda' bus='fdc'/>
<alias name='fdc0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
5.2>move the floppy file away
# mv floppy.img floppy.img.bak
# ll /var/lib/libvirt/images/floppy.img
ls: cannot access /var/lib/libvirt/images/floppy.img: No such file or directory
5.3> try to cold boot , boot up successfully.
# virsh destroy r7new ; virsh start r7new
Domain r7new destroyed
Domain r7new started
# virsh dumpxml r7new | grep floppy -A 8
<disk type='file' device='floppy'>
<driver name='qemu' type='raw'/>
<source startupPolicy='optional'/>
<backingStore/>
<target dev='fda' bus='fdc'/>
<alias name='fdc0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
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/RHSA-2015-0323.html |
Description: The error message should be improved when failed to restore a guest with a not availabe disk with startupPolicy='optional' Version-Release number of selected component (if applicable): libvirt-1.1.1-29.el7.x86_64 qemu-kvm-rhev-1.5.3-55.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. define and start a guest with disk with startupPolicy='optional' # virsh define r7.xml Domain r7 defined from r7.xml # virsh start r7 Domain r7 started # virsh dumpxml r7| grep disk -A 7 <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/libvirt/images/r7.img'/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/libvirt/images/test.img' startupPolicy='optional'/> <target dev='vdb' bus='virtio'/> <alias name='virtio-disk1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </disk> 2. move the disk which is with startupPolicy='optional' # mv test.img /tmp/ 3. save the guest successfully # virsh save r7 r7.save Domain r7 saved to r7.save 4. try to restore the guest failed # virsh restore r7.save error: Failed to restore domain from r7.save error: internal error: early end of file from monitor: possible problem: red_dispatcher_loadvm_commands: Unknown savevm section or instance '0000:00:08.0/virtio-blk' 0 load of migration failed Actual results: In step4: restore the guest failed. Expected results: In step4: the guest is restored successfully without the not existed disk or the error message should be improved.