From patchwork Fri May 13 11:21:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 9090761 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 914179F441 for ; Fri, 13 May 2016 11:52:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B2584201BC for ; Fri, 13 May 2016 11:52:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C89F820221 for ; Fri, 13 May 2016 11:52:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932066AbcEMLv4 (ORCPT ); Fri, 13 May 2016 07:51:56 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:29311 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751510AbcEMLvz (ORCPT ); Fri, 13 May 2016 07:51:55 -0400 Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u4DBprmY016666 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 13 May 2016 11:51:54 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0021.oracle.com (8.13.8/8.13.8) with ESMTP id u4DBprnM029320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 13 May 2016 11:51:53 GMT Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u4DBpqv4022823; Fri, 13 May 2016 11:51:52 GMT Received: from arch2.sg.oracle.com (/10.186.101.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 13 May 2016 04:51:51 -0700 From: Anand Jain To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org Subject: [PATCH 2/3] [RFC] fstests: btrfs: add functions to get and put a device for replace target Date: Fri, 13 May 2016 19:21:13 +0800 Message-Id: <1463138474-15990-2-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1463138474-15990-1-git-send-email-anand.jain@oracle.com> References: <1463138474-15990-1-git-send-email-anand.jain@oracle.com> X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For the replace tests we need a device as a spare device, here functions _spare_dev_get() and _spare_dev_put() will get it from the SCRATCH_DEV_POOL_SAVED, which is set when _scratch_dev_pool_get() is called, and is based on how many has already been assigned to SCRATCH_DEV_POOL. usage: _scratch_dev_pool_get 3 _spare_dev_get SPARE_DEV will have a device set which can be used as the replace target device. _spare_dev_put _scratch_dev_pool_put _spare_dev_get() will pick the next device after SCRATCH_DEV_POOL devices, from the SCRATCH_DEV_POOL_SAVED, and assigns it to SPARE_DEV. _spare_dev_put() will set to SPARE_DEV to null. Signed-off-by: Anand Jain --- common/rc | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/common/rc b/common/rc index 33632fd8e4a3..f2b39ddbee0c 100644 --- a/common/rc +++ b/common/rc @@ -786,6 +786,51 @@ _scratch_mkfs() esac } +_spare_dev_get() +{ + typeset -p SCRATCH_DEV_POOL_SAVED >/dev/null 2>&1 + if [ $? != 0 ]; then + _fail "Bug: unset val, must call _scratch_dev_pool_get before _spare_dev_get" + fi + + if [ -z "$SCRATCH_DEV_POOL_SAVED" ]; then + _fail "Bug: str empty, must call _scratch_dev_pool_get before _spare_dev_get" + fi + + # Check if the spare is already assigned + typeset -p SPARE_DEV >/dev/null 2>&1 + if [ $? == 0 ]; then + if [ ! -z "$SPARE_DEV" ]; then + _fail "Bug: SPARE_DEV = $SPARE_DEV already assigned" + fi + fi + + local ndevs=`echo $SCRATCH_DEV_POOL| wc -w` + local config_ndevs=`echo $SCRATCH_DEV_POOL_SAVED| wc -w` + + if [ $ndevs -eq $config_ndevs ]; then + _notrun "All devs used no spare" + fi + # Get a dev that is not used + local devs[]="( $SCRATCH_DEV_POOL_SAVED )" + SPARE_DEV=${devs[@]:$ndevs:1} + export SPARE_DEV +} + +_spare_dev_put() +{ + typeset -p SPARE_DEV >/dev/null 2>&1 + if [ $? != 0 ]; then + _fail "Bug: unset val, must call _spare_dev_get before its put" + fi + + if [ -z "$SPARE_DEV" ]; then + _fail "Bug: str empty, must call _spare_dev_get before its put" + fi + + export SPARE_DEV="" +} + # # $1 Number of the scratch devs required #