From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MGWJJ-00016c-LA for qemu-devel@nongnu.org; Tue, 16 Jun 2009 06:54:37 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MGWJE-0000zq-W0 for qemu-devel@nongnu.org; Tue, 16 Jun 2009 06:54:37 -0400 Received: from [199.232.76.173] (port=44468 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MGWJE-0000zm-R5 for qemu-devel@nongnu.org; Tue, 16 Jun 2009 06:54:32 -0400 Received: from mx2.redhat.com ([66.187.237.31]:43627) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1MGWJE-0000Rr-Cy for qemu-devel@nongnu.org; Tue, 16 Jun 2009 06:54:32 -0400 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n5GAsVlJ027113 for ; Tue, 16 Jun 2009 06:54:31 -0400 From: Kevin Wolf Date: Tue, 16 Jun 2009 12:53:25 +0200 Message-Id: <1245149605-29320-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH] qcow2: Change default cluster size to 64k List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf Larger cluster sizes mean less metadata. This has been discussion a few times, let's do it now. This turns 64k clusters on by default for new images. Signed-off-by: Kevin Wolf --- block/qcow2.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 8604e6a..9acbddf 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -782,7 +782,7 @@ static int qcow_create(const char *filename, QEMUOptionParameter *options) const char *backing_fmt = NULL; uint64_t sectors = 0; int flags = 0; - size_t cluster_size = 4096; + size_t cluster_size = 65536; /* Read out options */ while (options && options->name) { -- 1.6.0.6