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[PATCH v3 0/5] Fix multifd + cancel + multifd

From: Juan Quintela
Subject: [PATCH v3 0/5] Fix multifd + cancel + multifd
Date: Thu, 16 Jan 2020 16:46:11 +0100


In the v3 series:
- Add back the ->shutdown fix
  Dave found the problem, we need to setup an error if we do shutdown.
- Make iotests to work back (we need to setup ->active for savevm)
- So postcopy/recovery is fixed again.

Please review, if there are not outstanding issues, I plan to push it.

Thanks, Juan

In the v2 series:
- get the multifd test patch
- drop the ->shutdown fix
  it break postcopy recovery test.  Still trying to determine if the
  problem is inside the recover test or the recover code.
- upgrade the migrate_cancel test

Please review.

This series:
- create a test that does:
  launch multifd on target
  migrate to target
  cancel on source
  create another target
  migrate again

- And fixes the cases that made it fail:
* Make sure that we don't try ever IO after shutdown/error

Please, review.

Juan Quintela (5):
  multifd: Make sure that we don't do any IO after an error
  migration: Create MigrationState active field
  migration: Don't wait in semaphore for thread we know has finished
  qemu-file: Don't do IO after shutdown
  migration-test: Make sure that multifd and cancel works

 migration/migration.c        |   5 ++
 migration/migration.h        |   5 ++
 migration/qemu-file.c        |  22 ++++++-
 migration/ram.c              |  28 ++++++---
 migration/savevm.c           |   2 +
 tests/qtest/migration-test.c | 112 ++++++++++++++++++++++++++++++++++-
 6 files changed, 163 insertions(+), 11 deletions(-)


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