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migration: Create x-multifd-channels parameter

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Indicates the number of channels that we will create.  By default we
create 2 channels.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>

--

Catch inconsistent defaults (eric).
Improve comment stating that number of threads is the same than number
of sockets
Use new DEFIN_PROP_*
Rename x-multifd-threads to x-multifd-threads
This commit is contained in:
Juan Quintela
2017-09-22 14:11:21 +02:00
parent 30126bbf1f
commit 4075fb1ca4
4 changed files with 55 additions and 3 deletions
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qapi/migration.json
+21 -3
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@@ -466,13 +466,19 @@
# migrated and the destination must already have access to the
# same backing chain as was used on the source. (since 2.10)
#
# @x-multifd-channels: Number of channels used to migrate data in
# parallel. This is the same number that the
# number of sockets used for migration. The
# default value is 2 (since 2.11)
#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
'data': ['compress-level', 'compress-threads', 'decompress-threads',
'cpu-throttle-initial', 'cpu-throttle-increment',
'tls-creds', 'tls-hostname', 'max-bandwidth',
'downtime-limit', 'x-checkpoint-delay', 'block-incremental' ] }
'downtime-limit', 'x-checkpoint-delay', 'block-incremental',
'x-multifd-channels'] }
##
# @MigrateSetParameters:
@@ -528,6 +534,11 @@
# migrated and the destination must already have access to the
# same backing chain as was used on the source. (since 2.10)
#
# @x-multifd-channels: Number of channels used to migrate data in
# parallel. This is the same number that the
# number of sockets used for migration. The
# default value is 2 (since 2.11)
#
# Since: 2.4
##
# TODO either fuse back into MigrationParameters, or make
@@ -543,7 +554,8 @@
'*max-bandwidth': 'int',
'*downtime-limit': 'int',
'*x-checkpoint-delay': 'int',
'*block-incremental': 'bool' } }
'*block-incremental': 'bool',
'*x-multifd-channels': 'int' } }
##
# @migrate-set-parameters:
@@ -614,6 +626,11 @@
# migrated and the destination must already have access to the
# same backing chain as was used on the source. (since 2.10)
#
# @x-multifd-channels: Number of channels used to migrate data in
# parallel. This is the same number that the
# number of sockets used for migration.
# The default value is 2 (since 2.11)
#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@@ -627,7 +644,8 @@
'*max-bandwidth': 'int',
'*downtime-limit': 'int',
'*x-checkpoint-delay': 'int',
'*block-incremental': 'bool' } }
'*block-incremental': 'bool' ,
'*x-multifd-channels': 'int' } }
##
# @query-migrate-parameters: