From patchwork Thu May 26 23:07:34 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Durgin X-Patchwork-Id: 97632 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 56C19B6F8C for ; Fri, 27 May 2011 09:12:20 +1000 (EST) Received: from localhost ([::1]:53993 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QPjiz-00083v-MJ for incoming@patchwork.ozlabs.org; Thu, 26 May 2011 19:12:17 -0400 Received: from eggs.gnu.org ([140.186.70.92]:43772) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QPjid-0007zf-BI for qemu-devel@nongnu.org; Thu, 26 May 2011 19:11:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QPjic-0007eC-IA for qemu-devel@nongnu.org; Thu, 26 May 2011 19:11:55 -0400 Received: from mail.hq.newdream.net ([66.33.206.127]:48261) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QPjic-0007e1-Bq for qemu-devel@nongnu.org; Thu, 26 May 2011 19:11:54 -0400 Received: from mail.hq.newdream.net (localhost [127.0.0.1]) by mail.hq.newdream.net (Postfix) with ESMTP id 11A95C3B1; Thu, 26 May 2011 16:11:54 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=dreamhost.com; h=from:to:cc :subject:date:message-id:in-reply-to:references:to; q=dns; s= dreamhost.com; b=hqbFg+dctjtXa16Whcd93ha6B8QX+7Sxc2fPBlNy+tVOcRB cMD97AJ5ah9S9IzcTTk9mMeFfnPpGob/xpHQzklVkT2GPUqO1Jyh9BrZSEP9Ormy EifsMLmJ2ESmDorF3kdSItoIebC1xr0ixgz68rFJQ8riIRnN9M8c6ZhMG88E= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=dreamhost.com; h=from:to :cc:subject:date:message-id:in-reply-to:references:to; s= dreamhost.com; bh=cFF/SMbzqM7373otpX0xB9v4YBM=; b=DoIzZAHrealnvn ZO1+sDNlHnlJIE690iS1rn6P7vLLciqqIqDWTBLBwczM3ihm6C5LnQ7HX9YUHyr0 rs8R9muV0SSg4Iof3kf43dHDGwW5owar22gc5nsP4vHdIxvnEDXzqI9+RI8g54ha vPxnoBXZZB7YKr+IZjc5CPLZkRh+Y= Received: from pudgy.ops.newdream.net (ip-66-33-206-8.dreamhost.com [66.33.206.8]) by mail.hq.newdream.net (Postfix) with ESMTP id 0D13BC248; Thu, 26 May 2011 16:11:54 -0700 (PDT) From: Josh Durgin To: kvm@vger.kernel.org, qemu-devel@nongnu.org Date: Thu, 26 May 2011 16:07:34 -0700 Message-Id: <1306451254-25864-5-git-send-email-josh.durgin@dreamhost.com> X-Mailer: git-send-email 1.7.2.3 In-Reply-To: <1306451254-25864-1-git-send-email-josh.durgin@dreamhost.com> References: <1306451254-25864-1-git-send-email-josh.durgin@dreamhost.com> To: kvm@vger.kernel.org, qemu-devel@nongnu.org X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 66.33.206.127 Cc: Kevin Wolf , ceph-devel@vger.kernel.org, Christian Brunner Subject: [Qemu-devel] [PATCH v6 4/4] rbd: Add bdrv_truncate implementation X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Reviewed-by: Christian Brunner Signed-off-by: Josh Durgin --- block/rbd.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/block/rbd.c b/block/rbd.c index f4da6ab..bdc448a 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -688,6 +688,19 @@ static int64_t qemu_rbd_getlength(BlockDriverState *bs) return info.size; } +static int qemu_rbd_truncate(BlockDriverState *bs, int64_t offset) +{ + BDRVRBDState *s = bs->opaque; + int r; + + r = rbd_resize(s->image, offset); + if (r < 0) { + return r; + } + + return 0; +} + static int qemu_rbd_snap_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) { @@ -784,6 +797,7 @@ static BlockDriver bdrv_rbd = { .bdrv_get_info = qemu_rbd_getinfo, .create_options = qemu_rbd_create_options, .bdrv_getlength = qemu_rbd_getlength, + .bdrv_truncate = qemu_rbd_truncate, .protocol_name = "rbd", .bdrv_aio_readv = qemu_rbd_aio_readv,