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tests: use DIRECT io for zeroing whenver we can

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Performance with direct I/O here is noticable better,
so use it instead of buffered write whenever we can.
This commit is contained in:
Zdenek Kabelac 2020-09-19 23:25:11 +02:00
parent 688c72411e
commit 05ba12350c
10 changed files with 27 additions and 22 deletions
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4
test/shell/lvchange-cache-mode.sh
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@ -32,9 +32,9 @@ lvcreate -H -L14 -n $lv1 --cachemode writeback --cachesettings migration_thresho
for i in $(seq 1 10) ; do
echo 3 >/proc/sys/vm/drop_caches
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=64K count=20 conv=fdatasync || true
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=64K count=20 oflag=direct || true
echo 3 >/proc/sys/vm/drop_caches
dd if="$DM_DEV_DIR/$vg/$lv1" of=/dev/null bs=64K count=20 || true
dd if="$DM_DEV_DIR/$vg/$lv1" of=/dev/null bs=64K count=20 oflag=direct || true
done
lvs -o+cache_dirty_blocks,cache_read_hits,cache_read_misses,cache_write_hits,cache_write_misses $vg/$lv1

2
test/shell/lvcreate-thin-big.sh
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@ -49,7 +49,7 @@ lvcreate -V10G $vg/pool3 -n $lv1
lvcreate -V2G $vg/pool3 -n $lv2
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=512b count=1 conv=fdatasync
# ...excercise write speed to 'zero' device ;)
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=64K count=32767 conv=fdatasync
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=64K count=32767 oflag=direct
lvs -a $vg
# Check the percentage is not shown as 0.00
check lv_field $vg/$lv1 data_percent "0.01"

2
test/shell/pvcreate-operation.sh
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@ -181,7 +181,7 @@ grep "Not enough space available for metadata area with index 1 on PV $dev1" err
rm -f "$backupfile"
# pvcreate wipes swap signature when forced
dd if=/dev/zero of="$dev1" bs=1024 count=64
dd if=/dev/zero of="$dev1" bs=64k count=1 oflag=direct
mkswap "$dev1"
blkid -c /dev/null "$dev1" | grep "swap"
pvcreate -f "$dev1"

4
test/shell/select-report.sh
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@ -152,11 +152,11 @@ if aux target_at_least dm-snapshot 1 10 0; then
# Before 1.10.0, the snap percent included metadata size.
sel lv 'snap_percent=0' snap
fi
dd if=/dev/zero of="$DM_DEV_DIR/$vg3/snap" bs=1M count=1 conv=fdatasync
dd if=/dev/zero of="$DM_DEV_DIR/$vg3/snap" bs=1M count=1 oflag=direct
sel lv 'snap_percent<50' snap
sel lv 'snap_percent>50'
# overflow snapshot -> invalidated, but still showing 100%
not dd if=/dev/zero of="$DM_DEV_DIR/$vg3/snap" bs=1M count=4 conv=fdatasync
not dd if=/dev/zero of="$DM_DEV_DIR/$vg3/snap" bs=1M count=4 oflag=direct
sel lv 'snap_percent=100' snap
# % char is accepted as suffix for percent values
sel lv 'snap_percent=100%' snap

2
test/shell/snapshot-maxsize.sh
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@ -27,7 +27,7 @@ lvcreate -aey -L1 -n $lv1 $vg
# Snapshot should be large enough to handle any writes
lvcreate -L2 -s $vg/$lv1 -n $lv2
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=1M count=1 conv=fdatasync
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=1M count=1 oflag=direct
# Snapshot must not be 'I'nvalid here
check lv_attr_bit state $vg/$lv2 "a"

2
test/shell/snapshot-merge-thin.sh
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@ -23,7 +23,7 @@ aux prepare_vg 2
lvcreate -T -L1 -V1 -n $lv1 $vg/pool "$dev1"
lvcreate -s -n $lv2 -L2 $vg/$lv1 "$dev2"
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=1M count=1 conv=fdatasync
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv2" bs=1M count=1 oflag=direct
# Initiate background merge
lvconvert -b --merge $vg/$lv2

8
test/shell/thin-dmeventd-warns.sh
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@ -46,19 +46,19 @@ aux prepare_vg
lvcreate -L8 -V8 -T $vg/pool -n $lv1
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=26
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=26 oflag=direct
test "$(percent_)" -gt 80
# Give it some time to dmeventd to log WARNING
wait_warn_ 1
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=30
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=30 oflag=direct
test "$(percent_)" -gt 90
# Give it some time to dmeventd to log WARNING
wait_warn_ 2
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=1M count=8
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=1M count=8 oflag=direct
test "$(percent_)" -eq 100
wait_warn_ 3
@ -73,7 +73,7 @@ sleep 11
# below 'WARNED' threshold.
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=30
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv1" bs=256K count=30 oflag=direct
test "$(percent_)" -gt 90
lvs -a $vg

4
test/shell/thin-flags.sh
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@ -47,7 +47,7 @@ lvchange -an $vg
# Overfill data area
lvchange -ay $vg
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=1M count=2
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=1M count=2 oflag=direct
check lv_attr_bit health $vg/pool "D"
# TODO use spaces ??
check lv_field $vg/pool lv_health_status "out_of_data"
@ -78,7 +78,7 @@ lvchange -ay $vg
lvchange -ay $vg/$lv2
# Provisiong and last free bits in metadata
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=32K count=1
dd if=/dev/zero of="$DM_DEV_DIR/mapper/$vg-$lv2" bs=32K count=1 oflag=direct
check lv_attr_bit health $vg/pool "M"
# TODO - use spaces ??

17
test/shell/thin-many-dmeventd.sh
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@ -35,7 +35,7 @@ for i in $(seq 1 5)
do
lvcreate --errorwhenfull y -Zn -T -L4M -V4M $vg/pool_${i} -n $lv${i}
# Fill thin-pool to some capacity >50%
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv${i}" bs=256K count=9 conv=fdatasync
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv${i}" bs=256K count=9 oflag=direct
done
lvs -a $vg
@ -55,11 +55,16 @@ sleep 9
# new thin-pool registration.
for i in $(seq 11 15)
do
"$TIME" -o TM -f %e lvcreate --errorwhenfull y -Zn -T -L4M -V4M $vg/pool_${i} -n $lv${i}
read -r t < TM
test ${t%%.*} -lt 8 || die "Creation of thin pool took more then 8 second! ($t seconds)"
# Fill thin-pool to some capacity >50%
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv${i}" bs=256K count=9 conv=fdatasync
#/usr/bin/time -o TM -f %e lvcreate --errorwhenfull y -Zn -T -L4M -V4M $vg/pool_${i} -n $lv${i}
#read -r t < TM
#test ${t%%.*} -lt 8 || die "Creation of thin pool took more then 8 second! ($t seconds)"
START=$(date +%s)
lvcreate --errorwhenfull y -Zn -T -L4M -V4M $vg/pool_${i} -n $lv${i}
END=$(date +%s)
DIFF=$(( END - START ))
test "$DIFF" -lt 8 || die "Creation of thin pool took more then 8 second! ($DIFF seconds)"
# Fill thin-pool to some capacity >50%
dd if=/dev/zero of="$DM_DEV_DIR/$vg/$lv${i}" bs=256K count=9 oflag=direct
done
vgremove -f $vg

4
test/shell/vg-check-devs-used.sh
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@ -22,11 +22,11 @@ aux prepare_devs 3 8
vgcreate $SHARED "$vg" "$dev1" "$dev2"
lvcreate -l100%FREE -n $lv $vg
dd if="$dev1" of="$dev3" bs=1M
dd if="$dev1" of="$dev3" bs=1M oflag=direct
pvs --config "devices/global_filter = [ \"a|$dev2|\", \"a|$dev3|\", \"r|.*|\" ]" 2>err
grep "WARNING: Device mismatch detected for $vg/$lv which is accessing $dev1 instead of $dev3" err
dd if=/dev/zero of="$dev3" bs=1M count=8
dd if=/dev/zero of="$dev3" bs=1M count=8 oflag=direct
lvremove -ff $vg
# Also test if sub LVs with suffixes are correctly processed.