From patchwork Tue May 24 18:51:18 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Durgin X-Patchwork-Id: 97204 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 0AA76B6F8B for ; Wed, 25 May 2011 04:55:51 +1000 (EST) Received: from localhost ([::1]:53975 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QOwlg-0008Cg-FW for incoming@patchwork.ozlabs.org; Tue, 24 May 2011 14:55:48 -0400 Received: from eggs.gnu.org ([140.186.70.92]:54908) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QOwlI-000880-Kg for qemu-devel@nongnu.org; Tue, 24 May 2011 14:55:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QOwlH-0001wk-QU for qemu-devel@nongnu.org; Tue, 24 May 2011 14:55:24 -0400 Received: from mail.hq.newdream.net ([66.33.206.127]:37980) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QOwlH-0001wa-K8 for qemu-devel@nongnu.org; Tue, 24 May 2011 14:55:23 -0400 Received: from mail.hq.newdream.net (localhost [127.0.0.1]) by mail.hq.newdream.net (Postfix) with ESMTP id 1F96DC483; Tue, 24 May 2011 11:55:23 -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=bmUBhETYpgcUPoA5z4CO5iVJltZgKn3RJ45rTRrmpbFrpRj 91gs99asDHeSxbZrHE6aJdAJo4uirw91aX54FV4CB8vpL7l8kCpR7wqXtl37z+8S w8o/CGNTBNYNh9T2rp/m9nPUt/ogamXziQ6Wms0VpvoTyC+HuGdm9lWfXcA0= 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=orwgieigk8H/UPjl1JpwDCE4VqQ=; b=HZ19JFpMpX69AR NvbsYuYa1SuSc6E8F2U7PtRMud8BxatRYjuS7g8rLVHWAVxLQiNH0kBzmOxIFv2B UFnI5Hio31dzD82QaAlmiJ/6WAoQHv68ascpELo3iuQpcDKUtmi0xU6OenitUbsC IDgqOhNxQdnSU+9RQXlkjHhUDd/Qs= 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 1B918C128; Tue, 24 May 2011 11:55:23 -0700 (PDT) From: Josh Durgin To: kvm@vger.kernel.org, qemu-devel@nongnu.org Date: Tue, 24 May 2011 11:51:18 -0700 Message-Id: <1306263078-18089-5-git-send-email-josh.durgin@dreamhost.com> X-Mailer: git-send-email 1.7.2.3 In-Reply-To: <1306263078-18089-1-git-send-email-josh.durgin@dreamhost.com> References: <1306263078-18089-1-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 v4 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 Signed-off-by: Josh Durgin Reviewed-by: Christian Brunner --- block/rbd.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/block/rbd.c b/block/rbd.c index c9f32e4..015ae8e 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -687,6 +687,20 @@ 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) { + error_report("failed to resize rbd image"); + return -EIO; + } + + return 0; +} + static int qemu_rbd_snap_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) { @@ -785,6 +799,7 @@ 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,