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lvm2/test/shell/lvchange-raid.sh
Jonathan Brassow e72b2d047d TEST: Add tests for lvchange actions of RAID under thin
Patch includes RAID1,4,5,6,10 tests for:
- setting writemostly/writebehind
* syncaction changes (i.e. scrubbing operations)
- refresh (i.e. reviving devices after transient failures)
- setting recovery rate (sync I/O throttling)
while the RAID LVs are under a thin-pool (both data and metadata)

* not fully tested because I haven't found a way to force bad
  blocks to be noticed in the testsuite yet.  Works just fine
  when dealing with "real" devices.
2013-08-27 16:46:40 -05:00

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#!/bin/sh
# Copyright (C) 2013 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
. lib/test
THIN_POSTFIX=""
# Writemostly has been in every version since the begining
# Device refresh in 1.5.1 upstream and 1.3.4 < x < 1.4.0 in RHEL6
# Sync action in 1.5.0 upstream and 1.3.3 < x < 1.4.0 in RHEL6
# Proper mismatch count 1.5.2 upstream,1.3.5 < x < 1.4.0 in RHEL6
#
# We will simplify and simple test for 1.5.2 and 1.3.5 < x < 1.4.0
aux target_at_least dm-raid 1 3 5 &&
! aux target_at_least dm-raid 1 4 0 ||
aux target_at_least dm-raid 1 5 2 || skip
# DEVICE "$dev6" is reserved for non-RAID LVs that
# will not undergo failure
aux prepare_vg 6
# run_writemostly_check <VG> <LV>
run_writemostly_check() {
local d0
local d1
local vg=$1
local lv=${2}${THIN_POSTFIX}
printf "#\n#\n#\n# %s/%s (%s): run_writemostly_check\n#\n#\n#\n" \
$vg $lv `lvs -a --noheadings -o segtype $vg/$lv`
d0=`lvs -a --noheadings -o devices $vg/${lv}_rimage_0 | sed s/\(.\)//`
d0=$(sed s/^[[:space:]]*// <<< "$d0")
d1=`lvs -a --noheadings -o devices $vg/${lv}_rimage_1 | sed s/\(.\)//`
d1=$(sed s/^[[:space:]]*// <<< "$d1")
# No writemostly flag should be there yet.
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*-.$'
if [ `lvs -a --noheadings -o segtype $vg/$lv` != "raid1" ]; then
not lvchange --writemostly $d0 $vg/$lv
return
fi
# Set the flag
lvchange --writemostly $d0 $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# Running again should leave it set (not toggle)
lvchange --writemostly $d0 $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# Running again with ':y' should leave it set
lvchange --writemostly $d0:y $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# ':n' should unset it
lvchange --writemostly $d0:n $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
# ':n' again should leave it unset
lvchange --writemostly $d0:n $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
# ':t' toggle to set
lvchange --writemostly $d0:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# ':t' toggle to unset
lvchange --writemostly $d0:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
# ':y' to set
lvchange --writemostly $d0:y $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# Toggle both at once
lvchange --writemostly $d0:t --writemostly $d1:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*w.$'
# Toggle both at once again
lvchange --writemostly $d0:t --writemostly $d1:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*-.$'
# Toggle one, unset the other
lvchange --writemostly $d0:n --writemostly $d1:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*w.$'
# Toggle one, set the other
lvchange --writemostly $d0:y --writemostly $d1:t $vg/$lv
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*-.$'
# Partial flag supercedes writemostly flag
aux disable_dev $d0
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*p.$'
aux enable_dev $d0
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*w.$'
# Catch Bad writebehind values
not lvchange --writebehind "invalid" $vg/$lv
not lvchange --writebehind -256 $vg/$lv
# Set writebehind
[ ! `lvs --noheadings -o raid_write_behind $vg/$lv` ]
lvchange --writebehind 512 $vg/$lv
[ `lvs --noheadings -o raid_write_behind $vg/$lv` -eq 512 ]
# Converting to linear should clear flags and writebehind
lvconvert -m 0 $vg/$lv $d1
lvconvert --type raid1 -m 1 $vg/$lv $d1
[ ! `lvs --noheadings -o raid_write_behind $vg/$lv` ]
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_0 | grep '.*-.$'
lvs -a --noheadings -o lv_attr $vg/${lv}_rimage_1 | grep '.*-.$'
}
# run_syncaction_check <VG> <LV>
run_syncaction_check() {
local device
local seek
local size
local tmp
local vg=$1
local lv=${2}${THIN_POSTFIX}
printf "#\n#\n#\n# %s/%s (%s): run_syncaction_check\n#\n#\n#\n" \
$vg $lv `lvs -a --noheadings -o segtype $vg/$lv`
aux wait_for_sync $vg $lv
device=`lvs -a --noheadings -o devices $vg/${lv}_rimage_1 | sed s/\(.\)//`
device=$(sed s/^[[:space:]]*// <<< "$device")
size=`lvs -a --noheadings -o size --units 1k $vg/${lv}_rimage_1 | sed s/\.00k//`
size=$(sed s/^[[:space:]]*// <<< "$size")
size=$(($size / 2))
tmp=`pvs --noheadings -o mda_size --units 1k $device | sed s/\.00k//`
tmp=$(sed s/^[[:space:]]*// <<< "$tmp")
seek=$tmp # Jump over MDA
tmp=`lvs -a --noheadings -o size --units 1k $vg/${lv}_rmeta_1 | sed s/\.00k//`
tmp=$(sed s/^[[:space:]]*// <<< "$tmp")
seek=$(($seek + $tmp)) # Jump over RAID metadata image
seek=$(($seek + $size)) # Jump halfway through the RAID image
lvs --noheadings -o lv_attr $vg/$lv | grep '.*-.$'
[ `lvs --noheadings -o raid_mismatch_count $vg/$lv` == 0 ]
# Overwrite the last half of one of the PVs with crap
dd if=/dev/urandom of=$device bs=1k count=$size seek=$seek
if [ ! -z $THIN_POSTFIX ]; then
#
# Seems to work fine on real devices,
# but can't make the system notice the bad blocks
# in the testsuite - especially when thin is layered
# on top of RAID. In other cases, I can deactivate
# and reactivate and it works. Here, even that doesn't
# work.
return 0
lvchange -an $vg/$2
lvchange -ay $vg/$2
else
lvchange -an $vg/$lv
lvchange -ay $vg/$lv
fi
# "check" should find discrepancies but not change them
# 'lvs' should show results
lvchange --syncaction check $vg/$lv
aux wait_for_sync $vg $lv
if ! lvs --noheadings -o lv_attr $vg/$lv | grep '.*m.$'; then
lvs --noheadings -o lv_attr $vg/$lv
dmsetup status | grep $vg
false
fi
[ `lvs --noheadings -o raid_mismatch_count $vg/$lv` != 0 ]
# "repair" will fix discrepancies
lvchange --syncaction repair $vg/$lv
aux wait_for_sync $vg $lv
# Final "check" should show no mismatches
# 'lvs' should show results
lvchange --syncaction check $vg/$lv
aux wait_for_sync $vg $lv
lvs --noheadings -o lv_attr $vg/$lv | grep '.*-.$'
[ `lvs --noheadings -o raid_mismatch_count $vg/$lv` == 0 ]
}
# run_refresh_check <VG> <LV>
# Assumes "$dev2" is in the array
run_refresh_check() {
local size
local vg=$1
local lv=${2}${THIN_POSTFIX}
printf "#\n#\n#\n# %s/%s (%s): run_refresh_check\n#\n#\n#\n" \
$vg $lv `lvs -a --noheadings -o segtype $vg/$lv`
aux wait_for_sync $vg $lv
if [ -z $THIN_POSTFIX ]; then
size=`lvs -a --noheadings -o size --units 1k $vg/$lv | sed s/\.00k//`
else
size=`lvs -a --noheadings -o size --units 1k $vg/thinlv | sed s/\.00k//`
fi
size=$(sed s/^[[:space:]]*// <<< "$size")
# Disable dev2 and do some I/O to make the kernel notice
aux disable_dev "$dev2"
if [ -z $THIN_POSTFIX ]; then
dd if=/dev/urandom of=/dev/$vg/$lv bs=1k count=$size
else
dd if=/dev/urandom of=/dev/$vg/thinlv bs=1k count=$size
sync; sync; sync
fi
# Check for 'p'artial flag
lvs --noheadings -o lv_attr $vg/$lv | grep '.*p.$'
dmsetup status
lvs -a -o name,attr,devices $vg
aux enable_dev "$dev2"
dmsetup status
lvs -a -o name,attr,devices $vg
# Check for 'r'efresh flag
lvs --noheadings -o lv_attr $vg/$lv | grep '.*r.$'
lvchange --refresh $vg/$lv
aux wait_for_sync $vg $lv
lvs --noheadings -o lv_attr $vg/$lv | grep '.*-.$'
# Writing random data above should mean that the devices
# were out-of-sync. The refresh should have taken care
# of properly reintegrating the device.
lvchange --syncaction repair $vg/$lv
aux wait_for_sync $vg $lv
lvs --noheadings -o lv_attr $vg/$lv | grep '.*-.$'
}
# run_recovery_rate_check <VG> <LV>
# Assumes "$dev2" is in the array
run_recovery_rate_check() {
local vg=$1
local lv=${2}${THIN_POSTFIX}
printf "#\n#\n#\n# %s/%s (%s): run_recovery_rate_check\n#\n#\n#\n" \
$vg $lv `lvs -a --noheadings -o segtype $vg/$lv`
lvchange --minrecoveryrate 50 $vg/$lv
lvchange --maxrecoveryrate 100 $vg/$lv
[ `lvs --noheadings -o raid_min_recovery_rate $vg/$lv` == "50" ]
[ `lvs --noheadings -o raid_max_recovery_rate $vg/$lv` == "100" ]
}
# run_checks <VG> <LV> <"-"|snapshot_dev|"thinpool_data"|"thinpool_meta">
run_checks() {
THIN_POSTFIX=""
if [ -z $3 ]; then
printf "#\n#\n# run_checks: Too few arguments\n#\n#\n"
return 1
elif [ '-' == $3 ]; then
printf "#\n#\n# run_checks: Simple check\n#\n#\n"
run_writemostly_check $1 $2
run_syncaction_check $1 $2
run_refresh_check $1 $2
run_recovery_rate_check $1 $2
elif [ 'thinpool_data' == $3 ]; then
aux target_at_least dm-thin-pool 1 8 0 || return 0
printf "#\n#\n# run_checks: RAID as thinpool data\n#\n#\n"
# Hey, specifying devices for thin allocation doesn't work
# lvconvert --thinpool $1/$2 "$dev6"
lvcreate -L 2M -n ${2}_meta $1 "$dev6"
lvconvert --thinpool $1/$2 --poolmetadata ${2}_meta
lvcreate -T $1/$2 -V 1 -n thinlv
THIN_POSTFIX="_tdata"
run_writemostly_check $1 $2
run_syncaction_check $1 $2
run_refresh_check $1 $2
run_recovery_rate_check $1 $2
elif [ 'thinpool_meta' == $3 ]; then
aux target_at_least dm-thin-pool 1 8 0 || return 0
printf "#\n#\n# run_checks: RAID as thinpool metadata\n#\n#\n"
lvrename $1/$2 ${2}_meta
lvcreate -L 2M -n $2 $1 "$dev6"
lvconvert --thinpool $1/$2 --poolmetadata ${2}_meta
lvcreate -T $1/$2 -V 1 -n thinlv
THIN_POSTFIX="_tmeta"
run_writemostly_check $1 $2
run_syncaction_check $1 $2
run_refresh_check $1 $2
run_recovery_rate_check $1 $2
elif [ 'snapshot' == $3 ]; then
printf "#\n#\n# run_checks: RAID under snapshot\n#\n#\n"
lvcreate -s $1/$2 -l 4 -n snap "$dev6"
run_writemostly_check $1 $2
run_syncaction_check $1 $2
run_refresh_check $1 $2
run_recovery_rate_check $1 $2
lvremove -ff $1/snap
else
printf "#\n#\n# run_checks: Invalid argument\n#\n#\n"
return 1
fi
}
########################################################
# MAIN
########################################################
for i in "-" "snapshot" "thinpool_data" "thinpool_meta"; do
lvcreate --type raid1 -m 1 -L 2M -n $lv1 $vg \
"$dev1" "$dev2"
run_checks $vg $lv1 $i
lvremove -ff $vg
lvcreate --type raid4 -i 2 -L 2M -n $lv1 $vg \
"$dev1" "$dev2" "$dev3" "$dev4"
run_checks $vg $lv1 $i
lvremove -ff $vg
lvcreate --type raid5 -i 2 -L 2M -n $lv1 $vg \
"$dev1" "$dev2" "$dev3" "$dev4"
run_checks $vg $lv1 $i
lvremove -ff $vg
lvcreate --type raid6 -i 3 -L 2M -n $lv1 $vg \
"$dev1" "$dev2" "$dev3" "$dev4" "$dev5"
run_checks $vg $lv1 $i
lvremove -ff $vg
lvcreate --type raid10 -m 1 -i 2 -L 2M -n $lv1 $vg \
"$dev1" "$dev2" "$dev3" "$dev4"
run_checks $vg $lv1 $i
lvremove -ff $vg
done