diff options
Diffstat (limited to 'qapi/block-core.json')
| -rw-r--r-- | qapi/block-core.json | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 1defcde048..fcd054fcb1 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -2859,6 +2859,15 @@ # file is large, do not use in production. # (default: off) (since: 3.0) # +# Features: +# @dynamic-auto-read-only: If present, enabled auto-read-only means that the +# driver will open the image read-only at first, +# dynamically reopen the image file read-write when +# the first writer is attached to the node and reopen +# read-only when the last writer is detached. This +# allows giving QEMU write permissions only on demand +# when an operation actually needs write access. +# # Since: 2.9 ## { 'struct': 'BlockdevOptionsFile', @@ -2868,7 +2877,9 @@ '*aio': 'BlockdevAioOptions', '*drop-cache': {'type': 'bool', 'if': 'defined(CONFIG_LINUX)'}, - '*x-check-cache-dropped': 'bool' } } + '*x-check-cache-dropped': 'bool' }, + 'features': [ { 'name': 'dynamic-auto-read-only', + 'if': 'defined(CONFIG_POSIX)' } ] } ## # @BlockdevOptionsNull: @@ -4121,7 +4132,10 @@ # # @filename Filename for the new image file # @size Size of the virtual disk in bytes -# @preallocation Preallocation mode for the new image (default: off) +# @preallocation Preallocation mode for the new image (default: off; +# allowed values: off, +# falloc (if defined CONFIG_POSIX_FALLOCATE), +# full (if defined CONFIG_POSIX)) # @nocow Turn off copy-on-write (valid only on btrfs; default: off) # # Since: 2.12 @@ -4139,7 +4153,10 @@ # # @location Where to store the new image file # @size Size of the virtual disk in bytes -# @preallocation Preallocation mode for the new image (default: off) +# @preallocation Preallocation mode for the new image (default: off; +# allowed values: off, +# falloc (if defined CONFIG_GLUSTERFS_FALLOCATE), +# full (if defined CONFIG_GLUSTERFS_ZEROFILL)) # # Since: 2.12 ## @@ -4243,7 +4260,8 @@ # @backing-fmt Name of the block driver to use for the backing file # @encrypt Encryption options if the image should be encrypted # @cluster-size qcow2 cluster size in bytes (default: 65536) -# @preallocation Preallocation mode for the new image (default: off) +# @preallocation Preallocation mode for the new image (default: off; +# allowed values: off, falloc, full, metadata) # @lazy-refcounts True if refcounts may be updated lazily (default: off) # @refcount-bits Width of reference counts in bits (default: 16) # @@ -4426,7 +4444,8 @@ # @location Where to store the new image file # @size Size of the virtual disk in bytes # @backing-file File name of a base image -# @preallocation Preallocation mode (allowed values: off, full) +# @preallocation Preallocation mode for the new image (default: off; +# allowed values: off, full) # @redundancy Redundancy of the image # @object-size Object size of the image # @@ -4461,8 +4480,8 @@ # # @file Node to create the image format on # @size Size of the virtual disk in bytes -# @preallocation Preallocation mode for the new image (allowed values: off, -# metadata; default: off) +# @preallocation Preallocation mode for the new image (default: off; +# allowed values: off, metadata) # # Since: 2.12 ## |