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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
1 for compressed clusters
63: 0 for a cluster that is unused or requires COW, 1 if its
refcount is exactly one. This information is only accurate
in L2 tables that are reachable from the active L1
table.
63: 0 for clusters that are unused, compressed or require COW.
1 for standard clusters whose refcount is exactly one.
This information is only accurate in L2 tables
that are reachable from the active L1 table.
Standard Cluster Descriptor: