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specs/qcow2: Clarify that compressed clusters have the COPIED bit reset

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Compressed clusters are not supposed to have the COPIED bit set, but
this is not made explicit in the specs, so let's document it.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 74552e1d6e858d3159cb0c0e188e80bc9248e337.1523376013.git.berto@igalia.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Alberto Garcia 2018-04-10 18:05:04 +02:00 committed by Max Reitz
parent 74c44a5934
commit 3c7d14b201
1 changed files with 4 additions and 4 deletions
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8
docs/interop/qcow2.txt
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@ -400,10 +400,10 @@ L2 table entry:
62: 0 for standard clusters 62: 0 for standard clusters
1 for compressed clusters 1 for compressed clusters
63: 0 for a cluster that is unused or requires COW, 1 if its 63: 0 for clusters that are unused, compressed or require COW.
refcount is exactly one. This information is only accurate 1 for standard clusters whose refcount is exactly one.
in L2 tables that are reachable from the active L1 This information is only accurate in L2 tables
table. that are reachable from the active L1 table.
Standard Cluster Descriptor: Standard Cluster Descriptor: