[libvirt] [PATCH v3 00/24] Add support for migration events

[Jiri Denemark]

QEMU will soon (patches are available on qemu-devel) get support for
migration events which will finally allow us to get rid of polling
query-migrate every 50ms. However, we first need to be able to wait for
all events related to migration (migration status changes, block job
events, async abort requests) at once. This series prepares the
infrastructure and uses it to switch all polling loops in migration code
to pthread_cond_wait.

https://bugzilla.redhat.com/show_bug.cgi?id=1212077

Version 3 (see individual patches for details):
- most of the series has been ACKed in v2
- "qemu: Use domain condition for synchronous block jobs" was split in 3
  patches for easier review
- minor changes requested in v2 review

Version 2 (see individual patches for details):
- rewritten using per-domain condition variable
- enahnced to fully support the migration events


Jiri Denemark (24):
  conf: Introduce per-domain condition variable
  qemu: Introduce qemuBlockJobUpdate
  qemu: Properly report failed migration
  qemu: Use domain condition for synchronous block jobs
  qemu: Cancel storage migration in parallel
  qemu: Abort migration early if disk mirror failed
  qemu: Don't mess with disk->mirrorState
  Pass domain object to private data formatter/parser
  qemu: Make qemuMigrationCancelDriveMirror usable without async job
  qemu: Refactor qemuMonitorBlockJobInfo
  qemu: Cancel disk mirrors after libvirtd restart
  qemu: Use domain condition for asyncAbort
  qemu_monitor: Wire up SPICE_MIGRATE_COMPLETED event
  qemu: Do not poll for spice migration status
  qemu: Refactor qemuDomainGetJob{Info,Stats}
  qemu: Refactor qemuMigrationUpdateJobStatus
  qemu: Don't pass redundant job name around
  qemu: Refactor qemuMigrationWaitForCompletion
  qemu_monitor: Wire up MIGRATION event
  qemuDomainGetJobStatsInternal: Support migration events
  qemu: Update migration state according to MIGRATION event
  qemu: Wait for migration events on domain condition
  qemu: cancel drive mirrors when p2p connection breaks
  DO NOT APPLY: qemu: Work around weird migration status changes

 po/POTFILES.in               |   1 -
 src/conf/domain_conf.c       |  51 ++-
 src/conf/domain_conf.h       |  12 +-
 src/libvirt_private.syms     |   6 +
 src/libxl/libxl_domain.c     |  10 +-
 src/lxc/lxc_domain.c         |  12 +-
 src/qemu/qemu_blockjob.c     | 185 +++--------
 src/qemu/qemu_blockjob.h     |  15 +-
 src/qemu/qemu_capabilities.c |   3 +
 src/qemu/qemu_capabilities.h |   1 +
 src/qemu/qemu_domain.c       |  78 +++--
 src/qemu/qemu_domain.h       |   7 +-
 src/qemu/qemu_driver.c       | 201 +++++++-----
 src/qemu/qemu_migration.c    | 763 +++++++++++++++++++++++++++++--------------
 src/qemu/qemu_migration.h    |   8 +
 src/qemu/qemu_monitor.c      |  73 ++++-
 src/qemu/qemu_monitor.h      |  33 +-
 src/qemu/qemu_monitor_json.c | 152 ++++-----
 src/qemu/qemu_monitor_json.h |   7 +-
 src/qemu/qemu_process.c      |  92 +++++-
 tests/qemumonitorjsontest.c  |  40 ---
 21 files changed, 1057 insertions(+), 693 deletions(-)

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2.4.3