On 11/26/19 8:43 AM, Andrey Shinkevich wrote:
Allow writing all the data compressed through the filter driver.
The written data will be aligned by the cluster size.
Based on the QEMU current implementation, that data can be written to
unallocated clusters only. May be used for a backup job.
Suggested-by: Max Reitz <[email protected]>
Signed-off-by: Andrey Shinkevich <[email protected]>
---
+++ b/qapi/block-core.json
@@ -2884,15 +2884,16 @@
# @copy-on-read: Since 3.0
# @blklogwrites: Since 3.0
# @blkreplay: Since 4.2
+# @compress: Since 5.0
#
# Since: 2.9
##
{ 'enum': 'BlockdevDriver',
'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs',
- 'cloop', 'copy-on-read', 'dmg', 'file', 'ftp', 'ftps', 'gluster',
- 'host_cdrom', 'host_device', 'http', 'https', 'iscsi', 'luks',
- 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels', 'qcow',
- 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
+ 'cloop', 'copy-on-read', 'compress', 'dmg', 'file', 'ftp', 'ftps',
Nit: Preserving alphabetical ordering means 'compress' comes before
'copy-on-read'.
+ 'gluster', 'host_cdrom', 'host_device', 'http', 'https', 'iscsi',
+ 'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
+ 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
{ 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
'sheepdog',
'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs'
] }
@@ -4045,6 +4046,7 @@
'bochs': 'BlockdevOptionsGenericFormat',
'cloop': 'BlockdevOptionsGenericFormat',
'copy-on-read':'BlockdevOptionsGenericFormat',
+ 'compress': 'BlockdevOptionsGenericFormat',
and again
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
