Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=ba3e6e7c323a48b64... Commit: ba3e6e7c323a48b64720f7a182d5c8eca0a5613c Parent: a67774c1fa315e248504a51804cef9f9bc709b2e Author: Zdenek Kabelac zkabelac@redhat.com AuthorDate: Wed May 28 15:23:46 2014 +0200 Committer: Zdenek Kabelac zkabelac@redhat.com CommitterDate: Wed May 28 15:33:41 2014 +0200

tests: raid syncaction activation race

Demonstrace problem of syncaction being called right after activation. --- test/shell/lvchange-syncaction-raid.sh | 63 ++++++++++++++++++++++++++++++++ 1 files changed, 63 insertions(+), 0 deletions(-)

diff --git a/test/shell/lvchange-syncaction-raid.sh b/test/shell/lvchange-syncaction-raid.sh new file mode 100644 index 0000000..a27b885 --- /dev/null +++ b/test/shell/lvchange-syncaction-raid.sh @@ -0,0 +1,63 @@ +#!/bin/sh +# Copyright (C) 2014 Red Hat, Inc. All rights reserved. +# +# This copyrighted material is made available to anyone wishing to use, +# modify, copy, or redistribute it subject to the terms and conditions +# of the GNU General Public License v.2. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +# test activation race for raid's --syncaction check + +. lib/test + +aux have_raid 1 5 0 || skip +aux prepare_vg 3 + +lvcreate -n $lv1 $vg -l1 --type raid1 + +START=$(get pv_field "$dev2" pe_start --units 1k) +METASIZE=$(get lv_field $vg/${lv1}_rmeta_1 size -a --units 1k) +SEEK=$((${START%.00k} + ${METASIZE%.00k})) +# Overwrite some portion of _rimage_1 +dd if=/dev/urandom of="$dev2" bs=1K count=1 seek=$SEEK + +lvchange --syncaction check $vg/$lv1 + +# hmmm it's still in 'dd' buffer and not on real disk ?? +# anyway skip over with 'should' +should check lv_field $vg/$lv1 raid_mismatch_count "128" + +# Ensure it's all on disk now +sync + +lvchange --syncaction check $vg/$lv1 +check lv_field $vg/$lv1 raid_mismatch_count "128" + +# Let's deactivate +lvchange -an $vg/$lv1 + +# Slow down write by 100ms +aux delay_dev "$dev2" 0 100 +lvchange -ay $vg/$lv1 +# noone has it open and target is read & running +dmsetup info -c + +#sleep 10 < "$DM_DEV_DIR/$vg/$lv1" & +# "check" should find discrepancies but not change them +# 'lvs' should show results + +# FIXME +# this looks like some race with 'write' during activation +# and syncaction... +# For now it fails with: +# device-mapper: message ioctl on failed: Device or resource busy +# +lvchange --syncaction check $vg/$lv1 + +aux enable_dev "$dev2" +lvs -o+raid_mismatch_count -a $vg + +vgremove -ff $vg