From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42256) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1df52E-00007m-ES for qemu-devel@nongnu.org; Tue, 08 Aug 2017 09:59:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1df529-0001zh-KL for qemu-devel@nongnu.org; Tue, 08 Aug 2017 09:59:02 -0400 From: Kevin Wolf Date: Tue, 8 Aug 2017 15:58:22 +0200 Message-Id: <20170808135838.11525-3-kwolf@redhat.com> In-Reply-To: <20170808135838.11525-1-kwolf@redhat.com> References: <20170808135838.11525-1-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 02/18] quorum: Set sectors-count to 0 when reporting a flush error 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, peter.maydell@linaro.org From: Alberto Garcia The QUORUM_REPORT_BAD event has fields to report the sector in which the error was detected and the number of affected sectors starting from that one. This is important for read and write errors, but not for flush errors. For flush errors the current code reports the total size of the disk image. That is however not useful information in this case. Moreover, the bdrv_getlength() call can fail, and there's no good way of handling that failure. Since we're reporting useless information and we cannot even guarantee to do it in a consistent way, this patch changes the code to report 0 instead in all cases. Reported-by: Markus Armbruster Signed-off-by: Alberto Garcia Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block/quorum.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/block/quorum.c b/block/quorum.c index 55ba916655..d04da4f430 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -785,8 +785,7 @@ static coroutine_fn int quorum_co_flush(BlockDriverState *bs) for (i = 0; i < s->num_children; i++) { result = bdrv_co_flush(s->children[i]->bs); if (result) { - quorum_report_bad(QUORUM_OP_TYPE_FLUSH, 0, - bdrv_getlength(s->children[i]->bs), + quorum_report_bad(QUORUM_OP_TYPE_FLUSH, 0, 0, s->children[i]->bs->node_name, result); result_value.l = result; quorum_count_vote(&error_votes, &result_value, i); -- 2.13.4