[libvirt PATCH v4 0/4] Ask qemu about migration blockers

[Eugenio Perez Martin]

On Thu, Jul 21, 2022 at 7:02 AM Laine Stump <laine at redhat.com> wrote:
>
> This all looks good except a couple small nits that I've noted in
> separate messages for the individual patches.
>
> I've already made these minor changes locally and pushed them here:
>
>    https://gitlab.com/lainestump/libvirt/-/commits/REVIEW
>
> If it all looks okay to you, I'll push it as soon as I get up in the AM.
> If you don't like the changes I've made to the commit log messages, feel
> free to revise and re-send them :-)
>

All changes look good to me :). Not an english native, and not used to
libvirt codebase so I missed a few of these coding styles.

Thanks!

> This is a pretty good turn around time for your first patch in libvirt.
> Thanks for the contribution!
>
> On 7/20/22 12:05 PM, Eugenio Pérez wrote:
> > There are some hardcoded migration blockers in libvirt, like having a net
> > vhost-vdpa device. While it's true that they cannot be migrated at the moment,
> > there are plans to be able to migrate them soon
> >
> > They'll put a migration blockers in the cases where you cannot migrate them.
> > Ask qemu about then before rejecting the migration. In case the question is not
> > possible, assume they're not migratable.
> >
> > v4:
> > * Do not override qemuDomainGetMigrationBlockers error calling again
> >    virReportError.
> > * Replace ", " with "; " in blockers separators.
> >
> > v3:
> > * Return ok in qemuMonitorJSONGetMigrationBlockers is there are no
> >    blockers.
> > * Fix indentation
> > * Report all blockers instead of only the first.
> > * Squash some patches
> > * Move note to function doc.
> > * s/QEMU_MIGRATION_BLOCKED_REASONS/QEMU_CAPS_MIGRATION_BLOCKED_REASONS/
> >
> > v2:
> > * Ask qemu if it has some pending blockers before try the migration
> >
> > Eugenio Pérez (3):
> >    qemu_monitor: add support for get qemu migration blockers
> >    qemu_migration: get migration blockers before hardcoded checks
> >    qemu_migration: Do not forbid vDPA devices if can query blockers
> >
> > Jonathon Jongsma (1):
> >    qemu: introduce capability QEMU_CAPS_MIGRATION_BLOCKED_REASONS
> >
> >   src/qemu/qemu_capabilities.c                  |  2 +
> >   src/qemu/qemu_capabilities.h                  |  1 +
> >   src/qemu/qemu_migration.c                     | 34 +++++++++++++-
> >   src/qemu/qemu_monitor.c                       | 11 +++++
> >   src/qemu/qemu_monitor.h                       |  4 ++
> >   src/qemu/qemu_monitor_json.c                  | 44 +++++++++++++++++++
> >   src/qemu/qemu_monitor_json.h                  |  3 ++
> >   .../caps_6.0.0.aarch64.xml                    |  1 +
> >   .../qemucapabilitiesdata/caps_6.0.0.s390x.xml |  1 +
> >   .../caps_6.0.0.x86_64.xml                     |  1 +
> >   .../caps_6.1.0.x86_64.xml                     |  1 +
> >   .../caps_6.2.0.aarch64.xml                    |  1 +
> >   .../qemucapabilitiesdata/caps_6.2.0.ppc64.xml |  1 +
> >   .../caps_6.2.0.x86_64.xml                     |  1 +
> >   .../caps_7.0.0.aarch64.xml                    |  1 +
> >   .../qemucapabilitiesdata/caps_7.0.0.ppc64.xml |  1 +
> >   .../caps_7.0.0.x86_64.xml                     |  1 +
> >   .../caps_7.1.0.x86_64.xml                     |  1 +
> >   18 files changed, 109 insertions(+), 1 deletion(-)
> >
>