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migration: introduce postcopy-blocktime capability

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Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Alexey Perevalov
2017-10-30 16:16:25 +03:00
committed by Juan Quintela
parent 029ff892e1
commit 31bf06a9d6
3 changed files with 15 additions and 1 deletions
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6
qapi/migration.json
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@ -352,12 +352,16 @@
#
# @x-multifd: Use more than one fd for migration (since 2.11)
#
# @postcopy-blocktime: Calculate downtime for postcopy live migration
# (since 2.12)
#
# Since: 1.2
##
{ 'enum': 'MigrationCapability',
'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',
'block', 'return-path', 'pause-before-switchover', 'x-multifd' ] }
'block', 'return-path', 'pause-before-switchover', 'x-multifd',
'postcopy-blocktime' ] }
##
# @MigrationCapabilityStatus: