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| author | Peter Krempa <pkrempa@redhat.com> | 2020-03-10 12:38:31 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-03-11 15:54:38 +0100 |
| commit | c6bdc312f30d5c7326aa2fdca3e0f98c15eb541a (patch) | |
| tree | a895d1c8e136f05cec3971e120b37f8f4e4206ba | |
| parent | 6a5f6403a11307794ec79d277a065c137cfc12b2 (diff) | |
| download | qemu-c6bdc312f30d5c7326aa2fdca3e0f98c15eb541a.zip | |
qapi: Add '@allow-write-only-overlay' feature for 'blockdev-snapshot'
Anounce that 'blockdev-snapshot' command's permissions allow changing
of the backing file if the 'consistent_read' permission is not required.
This is useful for libvirt to allow late opening of the backing chain
during a blockdev-mirror.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200310113831.27293-8-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | qapi/block-core.json | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 9758fc48d2..91586fb1fb 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1472,6 +1472,12 @@ # # For the arguments, see the documentation of BlockdevSnapshot. # +# Features: +# @allow-write-only-overlay: If present, the check whether this operation is safe +# was relaxed so that it can be used to change +# backing file of a destination of a blockdev-mirror. +# (since 5.0) +# # Since: 2.5 # # Example: @@ -1492,7 +1498,8 @@ # ## { 'command': 'blockdev-snapshot', - 'data': 'BlockdevSnapshot' } + 'data': 'BlockdevSnapshot', + 'features': [ 'allow-write-only-overlay' ] } ## # @change-backing-file: |