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Description of problem:
Offline migration should not fail with error "Migration may lead to data corruption if disks use cache != none"
Version-Release number of selected component:
libvirt-3.2.0-4.virtcov.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1.Prepare a guest xml without cache=none:
...
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/nfs/fjin/rhel7.4-GUI.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</disk>
2. Do offline migration,fail:
# virsh migrate rhel7.4 qemu+ssh://10.66.144.45/system --offline --persistent
error: Unsafe migration: Migration may lead to data corruption if disks use cache != none
3. Offline migration with --unsafe, succeed
# virsh migrate rhel7.4 qemu+ssh://10.66.144.45/system --offline --persistent --unsafe
Actual results:
As step2, offline migration failed with error.
Expected results:
Offline migration should succeed
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-2018:0704
Description of problem: Offline migration should not fail with error "Migration may lead to data corruption if disks use cache != none" Version-Release number of selected component: libvirt-3.2.0-4.virtcov.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Prepare a guest xml without cache=none: ... <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/nfs/fjin/rhel7.4-GUI.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> 2. Do offline migration,fail: # virsh migrate rhel7.4 qemu+ssh://10.66.144.45/system --offline --persistent error: Unsafe migration: Migration may lead to data corruption if disks use cache != none 3. Offline migration with --unsafe, succeed # virsh migrate rhel7.4 qemu+ssh://10.66.144.45/system --offline --persistent --unsafe Actual results: As step2, offline migration failed with error. Expected results: Offline migration should succeed