From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38815) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fIc4S-0006ib-UZ for qemu-devel@nongnu.org; Tue, 15 May 2018 11:41:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fIc4S-0001VG-2R for qemu-devel@nongnu.org; Tue, 15 May 2018 11:41:00 -0400 From: Kevin Wolf Date: Tue, 15 May 2018 17:40:15 +0200 Message-Id: <20180515154033.19899-20-kwolf@redhat.com> In-Reply-To: <20180515154033.19899-1-kwolf@redhat.com> References: <20180515154033.19899-1-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 19/37] specs/qcow2: Clarify that compressed clusters have the COPIED bit reset List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, qemu-devel@nongnu.org From: Alberto Garcia 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 Message-id: 74552e1d6e858d3159cb0c0e188e80bc9248e337.1523376013.git.berto@igalia.com Reviewed-by: Eric Blake Signed-off-by: Max Reitz --- docs/interop/qcow2.txt | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index feb711fb6a..8e1547ded2 100644 --- a/docs/interop/qcow2.txt +++ b/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: -- 2.13.6