Re: [PATCH 07/14] qcow2: simple case support for downgrading of qcow2 images with zstd

2021-07-16 Thread Max Reitz
On 05.07.21 11:15, Vladimir Sementsov-Ogievskiy wrote: If image doesn't have any compressed cluster we can easily switch to zlib compression, which may allow to downgrade the image. That's mostly needed to support IMGOPTS='compression_type=zstd' in some iotests which do qcow2 downgrade. While b

[PATCH 07/14] qcow2: simple case support for downgrading of qcow2 images with zstd

2021-07-05 Thread Vladimir Sementsov-Ogievskiy
If image doesn't have any compressed cluster we can easily switch to zlib compression, which may allow to downgrade the image. That's mostly needed to support IMGOPTS='compression_type=zstd' in some iotests which do qcow2 downgrade. While being here also fix checkpatch complain against '#' in pri