From patchwork Wed Jun 15 08:47:02 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 9177871 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6B73960573 for ; Wed, 15 Jun 2016 08:46:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5BF8C2821F for ; Wed, 15 Jun 2016 08:46:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50F782833D; Wed, 15 Jun 2016 08:46:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0254A2821F for ; Wed, 15 Jun 2016 08:46:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752996AbcFOIq1 (ORCPT ); Wed, 15 Jun 2016 04:46:27 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:45594 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751024AbcFOIqZ (ORCPT ); Wed, 15 Jun 2016 04:46:25 -0400 Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u5F8kOCP009649 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 15 Jun 2016 08:46:24 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0022.oracle.com (8.13.8/8.13.8) with ESMTP id u5F8kNhr013711 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 15 Jun 2016 08:46:24 GMT Received: from abhmp0016.oracle.com (abhmp0016.oracle.com [141.146.116.22]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u5F8kMah006445; Wed, 15 Jun 2016 08:46:23 GMT Received: from arch2.localdomain (/42.60.24.64) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 15 Jun 2016 01:46:21 -0700 From: Anand Jain To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org Subject: [PATCH v2 2/6] fstests: btrfs: add functions to get and put a device for replace target Date: Wed, 15 Jun 2016 16:47:02 +0800 Message-Id: <1465980422-18947-1-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1463495530-425-2-git-send-email-anand.jain@oracle.com> References: <1463495530-425-2-git-send-email-anand.jain@oracle.com> X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anand Jain 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 --- v2: Added comments common/rc | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/common/rc b/common/rc index 31c46ba1226e..ffdbfcdae68d 100644 --- a/common/rc +++ b/common/rc @@ -802,6 +802,65 @@ _scratch_mkfs() esac } +# Helper function to get a spare or replace-target device from +# configured SCRATCH_DEV_POLL, must call _scratch_dev_pool_get() +# before _spare_dev_get(). Replace-target-device/Spare-device will +# be assigned to SPARE_DEV. +# As of now only one replace-target-device/spare-device can be +# assigned. +# +# Usage: +# _scratch_dev_pool_get() +# _spare_dev_get() +# :: do stuff +# _spare_dev_put() +# _scratch_dev_pool_put() +# +_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="" +} + # # Generally test cases will have.. # _require_scratch_dev_pool X