qcow2: Document the Extended L2 Entries feature
commit30afc12085c8e7759abc77651f65916afdca7bbd
authorAlberto Garcia <berto@igalia.com>
Fri, 10 Jul 2020 16:12:49 +0000 (10 18:12 +0200)
committerMax Reitz <mreitz@redhat.com>
Tue, 25 Aug 2020 06:33:20 +0000 (25 08:33 +0200)
tree455fa79548bb6ad61bce2ec7dbdfd0e45a934e4f
parent12c6aebedfb6b90d5f019ab536dd3f2752e6e361
qcow2: Document the Extended L2 Entries feature

Subcluster allocation in qcow2 is implemented by extending the
existing L2 table entries and adding additional information to
indicate the allocation status of each subcluster.

This patch documents the changes to the qcow2 format and how they
affect the calculation of the L2 cache size.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <5199f2e1c717bcaa58b48142c9062b803145ff7f.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
docs/interop/qcow2.txt
docs/qcow2-cache.txt