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| author | Kevin Wolf <kwolf@redhat.com> | 2025-02-04 22:13:58 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2025-02-06 14:26:51 +0100 |
| commit | faecd16fe5c65a25b5b55b5edbe4322cec5a9d96 (patch) | |
| tree | 9b1dd4b5b9df09206ec2cfec167b8e760abfcfc4 /qapi | |
| parent | 8c2c72a33581987af8d8c484d03af3cd69b9e10a (diff) | |
| download | qemu-faecd16fe5c65a25b5b55b5edbe4322cec5a9d96.zip qemu-faecd16fe5c65a25b5b55b5edbe4322cec5a9d96.tar.gz qemu-faecd16fe5c65a25b5b55b5edbe4322cec5a9d96.tar.bz2 | |
block: Add option to create inactive nodes
In QEMU, nodes are automatically created inactive while expecting an
incoming migration (i.e. RUN_STATE_INMIGRATE). In qemu-storage-daemon,
the notion of runstates doesn't exist. It also wouldn't necessarily make
sense to introduce it because a single daemon can serve multiple VMs
that can be in different states.
Therefore, allow the user to explicitly open images as inactive with a
new option. The default is as before: Nodes are usually active, except
when created during RUN_STATE_INMIGRATE.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20250204211407.381505-8-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 1296ca8..6029e54 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4683,6 +4683,11 @@ # # @cache: cache-related options # +# @active: whether the block node should be activated (default: true). +# Having inactive block nodes is useful primarily for migration because it +# allows opening an image on the destination while the source is still +# holding locks for it. (Since 10.0) +# # @read-only: whether the block device should be read-only (default: # false). Note that some block drivers support only read-only # access, either generally or in certain configurations. In this @@ -4709,6 +4714,7 @@ '*node-name': 'str', '*discard': 'BlockdevDiscardOptions', '*cache': 'BlockdevCacheOptions', + '*active': 'bool', '*read-only': 'bool', '*auto-read-only': 'bool', '*force-share': 'bool', |