Permalink
Browse files

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

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>
  • Loading branch information...
bertogg authored and XanClic committed Apr 10, 2018
1 parent 74c44a5 commit 3c7d14b201ee4eeec2ca259b5a071a4599aa8847
Showing with 4 additions and 4 deletions.
  1. +4 −4 docs/interop/qcow2.txt
@@ -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:

0 comments on commit 3c7d14b

Please sign in to comment.