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| author | Pavel Butsykin | 2017-02-03 16:23:20 +0100 |
|---|---|---|
| committer | Dr. David Alan Gilbert | 2017-02-13 18:27:13 +0100 |
| commit | 53f09a1076f5efbba7d751a8005e2fcf008606db (patch) | |
| tree | 1f4f0cd62537a1f1b50ca73fcba8fb3ee7a272d0 /qapi-schema.json | |
| parent | migration: add MigrationState arg for ram_save_/compressed_/page() (diff) | |
| download | qemu-53f09a1076f5efbba7d751a8005e2fcf008606db.tar.gz qemu-53f09a1076f5efbba7d751a8005e2fcf008606db.tar.xz qemu-53f09a1076f5efbba7d751a8005e2fcf008606db.zip | |
add 'release-ram' migrate capability
This feature frees the migrated memory on the source during postcopy-ram
migration. In the second step of postcopy-ram migration when the source vm
is put on pause we can free unnecessary memory. It will allow, in particular,
to start relaxing the memory stress on the source host in a load-balancing
scenario.
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Message-Id: <20170203152321.19739-3-pbutsykin@virtuozzo.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Manually merged in Pavel's 'migration: madvise error_report fixup!'
Diffstat (limited to 'qapi-schema.json')
| -rw-r--r-- | qapi-schema.json | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/qapi-schema.json b/qapi-schema.json index 61151f34d0..93305412dd 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -865,11 +865,14 @@ # side, this process is called COarse-Grain LOck Stepping (COLO) for # Non-stop Service. (since 2.8) # +# @release-ram: if enabled, qemu will free the migrated ram pages on the source +# during postcopy-ram migration. (since 2.9) +# # Since: 1.2 ## { 'enum': 'MigrationCapability', 'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks', - 'compress', 'events', 'postcopy-ram', 'x-colo'] } + 'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram'] } ## # @MigrationCapabilityStatus: |