Merge "Update live_migration_downtime definition"
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commit
26e65c3270
@ -263,8 +263,10 @@ memory-intensive instances succeed.
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live_migration_downtime_steps = 10
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live_migration_downtime_delay = 75
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``live_migration_downtime`` sets the maximum permitted downtime for a live
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migration, in *milliseconds*. The default is 500.
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``live_migration_downtime`` sets the target maximum period of time Nova will
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try to keep the instance paused during the last part of the memory copy, in
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*milliseconds*. This value may be exceeded if there is any reduction on the
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transfer rate after the VM is paused. The default is 500.
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``live_migration_downtime_steps`` sets the total number of adjustment steps
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until ``live_migration_downtime`` is reached. The default is 10 steps.
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@ -321,13 +321,14 @@ Please refer to the libvirt documentation for further details.
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default=500,
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min=100,
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help="""
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Maximum permitted downtime, in milliseconds, for live migration
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switchover.
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Target maximum period of time Nova will try to keep the instance paused
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during the last part of the memory copy, in *milliseconds*.
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Will be rounded up to a minimum of 100ms. You can increase this value
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if you want to allow live-migrations to complete faster, or avoid
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live-migration timeout errors by allowing the guest to be paused for
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longer during the live-migration switch over.
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longer during the live-migration switch over. This value may be exceeded
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if there is any reduction on the transfer rate after the VM is paused.
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Related options:
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