From patchwork Thu Nov 25 09:48:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikolay Borisov X-Patchwork-Id: 12638791 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE9DEC433F5 for ; Thu, 25 Nov 2021 09:50:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354330AbhKYJxX (ORCPT ); Thu, 25 Nov 2021 04:53:23 -0500 Received: from smtp-out1.suse.de ([195.135.220.28]:44986 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348499AbhKYJvX (ORCPT ); Thu, 25 Nov 2021 04:51:23 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 018BB21954; Thu, 25 Nov 2021 09:48:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1637833691; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=8FD041QCw1V4laqSSeqkl7fLQ0waYbGBjG+MXZKCI2Q=; b=oW5D0Zhq7hpNeyS3eoLQ0dxSVQnmDjiPOU58E/9sdjKRjqMoECB9yI+W77bGmNtvAyASW7 z2XpqZv74YrjfuGE4xPILc6pyM7bh0oTK5twVRuP7fc5wZNnzACt94R4OhA2XOJ5ES+dkv ffTRKXWGMJxK1i5U34118vyU7yTT5Fs= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id B871713F80; Thu, 25 Nov 2021 09:48:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 96mAKtpbn2HfLQAAMHmgww (envelope-from ); Thu, 25 Nov 2021 09:48:10 +0000 From: Nikolay Borisov To: linux-btrfs@vger.kernel.org Cc: fstests@vger.kernel.org, Nikolay Borisov Subject: [PATCH v4] btrfs: Test proper interaction between skip_balance and paused balance Date: Thu, 25 Nov 2021 11:48:09 +0200 Message-Id: <20211125094809.813275-1-nborisov@suse.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Ensure a device can be added to a filesystem that has a paused balance operation and has been mounted with the 'skip_balance' mount option Signed-off-by: Nikolay Borisov --- V4: * No longer use mount uuid * Some typos fixes tests/btrfs/049 | 90 +++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/049.out | 1 + 2 files changed, 91 insertions(+) create mode 100755 tests/btrfs/049 -- 2.17.1 diff --git a/tests/btrfs/049 b/tests/btrfs/049 new file mode 100755 index 000000000000..765b1de36699 --- /dev/null +++ b/tests/btrfs/049 @@ -0,0 +1,90 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2021 SUSE Linux Products GmbH. All Rights Reserved. +# +# FS QA Test 049 +# +# Ensure that it's possible to add a device when we have a paused balance +# and the filesystem is mounted with skip_balance. The issue is fixed by a patch +# titled "btrfs: allow device add if balance is paused" +# +. ./common/preamble +_begin_fstest quick balance auto + +# real QA test starts here + +_supported_fs btrfs +_require_scratch_swapfile +_require_scratch_dev_pool 3 + +_scratch_dev_pool_get 2 +_spare_dev_get + +swapfile="$SCRATCH_MNT/swap" +_scratch_pool_mkfs >/dev/null +_scratch_mount +_format_swapfile "$swapfile" $(($(get_page_size) * 10)) + +check_exclusive_ops() +{ + $BTRFS_UTIL_PROG device remove 2 $SCRATCH_MNT &>/dev/null + [ $? -ne 0 ] || _fail "Successfully removed device" + $BTRFS_UTIL_PROG filesystem resize -5m $SCRATCH_MNT &> /dev/null + [ $? -ne 0 ] || _fail "Successfully resized filesystem" + $BTRFS_UTIL_PROG replace start -B 2 $SPARE_DEV $SCRATCH_MNT &> /dev/null + [ $? -ne 0 ] || _fail "Successfully replaced device" + swapon "$swapfile" &> /dev/null + [ $? -ne 0 ] || _fail "Successfully enabled a swap file" +} + +# Create some files on the so that balance doesn't complete instantly +args=`_scale_fsstress_args -z \ + -f write=10 -f creat=10 \ + -n 1000 -p 2 -d $SCRATCH_MNT/stress_dir` +echo "Run fsstress $args" >>$seqres.full +$FSSTRESS_PROG $args >/dev/null 2>&1 + +# Start and pause balance to ensure it will be restored on remount +echo "Start balance" >>$seqres.full +_run_btrfs_balance_start --bg "$SCRATCH_MNT" +$BTRFS_UTIL_PROG balance pause "$SCRATCH_MNT" +$BTRFS_UTIL_PROG balance status "$SCRATCH_MNT" | grep -q paused +[ $? -eq 0 ] || _fail "Balance not paused" + +# Exclusive ops should be blocked on manual pause of balance +check_exclusive_ops + +# Balance is now placed in paused state during mount +_scratch_cycle_mount "skip_balance" + +# Exclusive ops should be blocked on balance pause due to 'skip_balance' +check_exclusive_ops + +# Device add is the only allowed operation +$BTRFS_UTIL_PROG device add -K -f $SPARE_DEV "$SCRATCH_MNT" + +# Exclusive ops should still be blocked on account that balance is still paused +check_exclusive_ops + +# Should be possible to resume balance after device add +$BTRFS_UTIL_PROG balance resume "$SCRATCH_MNT" &>/dev/null +[ $? -eq 0 ] || _fail "Couldn't resume balance after device add" + +# Add more files so that new balance won't fish immediately +$FSSTRESS_PROG $args >/dev/null 2>&1 + +# Now pause->resume balance. This ensures balance paused is properly set in +# the kernel and won't trigger an assertion failure. +echo "Start balance" >>$seqres.full +_run_btrfs_balance_start --bg "$SCRATCH_MNT" +$BTRFS_UTIL_PROG balance pause "$SCRATCH_MNT" +$BTRFS_UTIL_PROG balance status "$SCRATCH_MNT" | grep -q paused +[ $? -eq 0 ] || _fail "Balance not paused" +$BTRFS_UTIL_PROG balance resume "$SCRATCH_MNT" &>/dev/null +[ $? -eq 0 ] || _fail "Balance can't be resumed via IOCTL" + +_spare_dev_put +_scratch_dev_pool_put +echo "Silence is golden" +status=0 +exit diff --git a/tests/btrfs/049.out b/tests/btrfs/049.out index cb0061b33ff0..c69568ad9323 100644 --- a/tests/btrfs/049.out +++ b/tests/btrfs/049.out @@ -1 +1,2 @@ QA output created by 049 +Silence is golden