migration: Recover block devices if failure in device state
Ine91d895
I added the new pause-before-switchover mechanism to allow migration completion to be delayed; this changes the last state prior to completion to MIGRATE_STATUS_DEVICE rather than MIGRATE_STATUS_ACTIVE. Fix the failure path in migration_completion to recover the block devices if it fails in MIGRATE_STATUS_DEVICE, not just the MIGRATE_STATUS_ACTIVE that it previously had. This corresponds to rh bz: https://bugzilla.redhat.com/show_bug.cgi?id=1538494 whose symptom is an occasional source crash on a failed migration. Fixes:e91d8951d5
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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@ -2122,7 +2122,8 @@ fail_invalidate:
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/* If not doing postcopy, vm_start() will be called: let's regain
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* control on images.
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*/
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if (s->state == MIGRATION_STATUS_ACTIVE) {
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if (s->state == MIGRATION_STATUS_ACTIVE ||
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s->state == MIGRATION_STATUS_DEVICE) {
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Error *local_err = NULL;
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qemu_mutex_lock_iothread();
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