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| author | Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp> | 2023-05-16 23:32:27 +0900 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-05-19 19:12:12 +0200 |
| commit | 41f8b633393021923fd555d8d94bded2f8f6f05d (patch) | |
| tree | ef4844776855fbf0d2e627a2e04bf27367f07baa /docs | |
| parent | d53c89aed1d25b8a9d98b3904e9226bda699adf1 (diff) | |
| download | focaccia-qemu-41f8b633393021923fd555d8d94bded2f8f6f05d.tar.gz focaccia-qemu-41f8b633393021923fd555d8d94bded2f8f6f05d.zip | |
docs/interop/qcow2.txt: fix description about "zlib" clusters
"zlib" clusters are actually raw deflate (RFC1951) clusters without zlib headers. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp> Message-Id: <168424874322.11954.1340942046351859521-0@git.sr.ht> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/interop/qcow2.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index f7dc304ff6..e7f036c286 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -214,14 +214,18 @@ version 2. type. If the incompatible bit "Compression type" is set: the field - must be present and non-zero (which means non-zlib + must be present and non-zero (which means non-deflate compression type). Otherwise, this field must not be present - or must be zero (which means zlib). + or must be zero (which means deflate). Available compression type values: - 0: zlib <https://www.zlib.net/> + 0: deflate <https://www.ietf.org/rfc/rfc1951.txt> 1: zstd <http://github.com/facebook/zstd> + The deflate compression type is called "zlib" + <https://www.zlib.net/> in QEMU. However, clusters with the + deflate compression type do not have zlib headers. + === Header padding === |