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git://sourceware.org/git/lvm2.git
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b6e67d688e
. it's of little use since the thin pool cannot be extended while it's using writecache. . lvconvert --splitcache on tdata isn't working, the writecache table doesn't get updated with the cleaner setting. . adding writecache to existing tdata not yet implemented
199 lines
4.3 KiB
Bash
199 lines
4.3 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2018 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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SKIP_WITH_LVMPOLLD=1
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. lib/inittest
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mkfs_mount_unmount()
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{
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lvt=$1
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mkfs.xfs -f "$DM_DEV_DIR/$vg/$lvt"
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mount "$DM_DEV_DIR/$vg/$lvt" "$mount_dir"
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cp pattern1 "$mount_dir/pattern1"
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umount "$mount_dir"
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}
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setup_thin_lvs()
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{
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pool=$1
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for i in $(seq 1 4); do
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lvcreate --type thin -V1G -n th$i --thinpool $pool $vg
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mkfs_mount_unmount th${i}
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lvchange -an $vg/th${i}
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done
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}
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diff_thin_lvs()
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{
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for i in $(seq 1 4); do
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diff pattern1 "${mount_dir}_${i}/pattern1"
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diff pattern2 "${mount_dir}_${i}/pattern2"
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done
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}
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mount_thin_lvs()
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{
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for i in $(seq 1 4); do
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lvchange -ay $vg/th$i
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mount "$DM_DEV_DIR/$vg/th$i" "${mount_dir}_${i}"
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done
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}
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unmount_thin_lvs()
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{
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for i in $(seq 1 4); do
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umount "${mount_dir}_${i}"
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lvchange -an $vg/th${i}
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done
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}
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write_thin_lvs()
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{
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for i in $(seq 1 4); do
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cp pattern2 "${mount_dir}_${i}/pattern2"
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done
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}
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aux have_writecache 1 0 0 || skip
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which mkfs.xfs || skip
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mount_dir="mnt"
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mount_dir_1="mnt1"
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mount_dir_2="mnt2"
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mount_dir_3="mnt3"
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mount_dir_4="mnt4"
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mkdir -p "$mount_dir"
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for i in $(seq 1 4); do
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mkdir -p "${mount_dir}_${i}"
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done
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# generate random data
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dd if=/dev/urandom of=pattern1 bs=512K count=1
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dd if=/dev/urandom of=pattern2 bs=512 count=15
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aux prepare_devs 6 40
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vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3" "$dev4" "$dev5" "$dev6"
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#
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# writecache as thin pool data
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# splitcache while inactive
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#
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# lv1 holds thin pool data and uses writecache
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# lv2 holds cachevol for writecache
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# lv3 holds thin pool metadata
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lvcreate -n $lv1 -l 16 -an $vg "$dev1" "$dev2"
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lvcreate -n $lv2 -l 2 -an $vg "$dev3"
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lvcreate -n $lv3 -l 2 -an $vg "$dev4"
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lvconvert -y --type writecache --cachevol $lv2 $vg/$lv1
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lvconvert -y --type thin-pool --poolmetadata $lv3 --poolmetadataspare n $vg/$lv1
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setup_thin_lvs $lv1
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mount_thin_lvs
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write_thin_lvs
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unmount_thin_lvs
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lvchange -an $vg/$lv1
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lvconvert --splitcache --cachesettings cleaner=0 $vg/${lv1}_tdata
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lvs -o segtype $vg/$lv2 | grep linear
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mount_thin_lvs
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diff_thin_lvs
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unmount_thin_lvs
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lvremove -y $vg/$lv1
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lvremove -y $vg/$lv2
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#
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# writecache as thin pool data
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# splitcache while active
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#
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# lv1 holds thin pool data and uses writecache
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# lv2 holds cachevol for writecache
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# lv3 holds thin pool metadata
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lvcreate -n $lv1 -l 16 -an $vg "$dev1" "$dev2"
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lvcreate -n $lv2 -l 2 -an $vg "$dev3"
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lvcreate -n $lv3 -l 2 -an $vg "$dev4"
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lvconvert -y --type writecache --cachevol $lv2 $vg/$lv1
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lvconvert -y --type thin-pool --poolmetadata $lv3 --poolmetadataspare n $vg/$lv1
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setup_thin_lvs $lv1
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mount_thin_lvs
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write_thin_lvs
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# FIXME: splitcache setting cleaner on tdata writecache doesn't work,
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# bypassing that with cleaner=0 here.
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lvconvert --splitcache --cachesettings cleaner=0 $vg/${lv1}_tdata
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lvs -o segtype $vg/$lv2 | grep linear
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diff_thin_lvs
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unmount_thin_lvs
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mount_thin_lvs
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diff_thin_lvs
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unmount_thin_lvs
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lvremove -y $vg/$lv1
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lvremove -y $vg/$lv2
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#
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# add writecache to raid, then use writecache for thin pool data
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#
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# lv1 holds thin pool data and uses writecache
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# lv2 holds cachevol for writecache
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# lv3 holds thin pool metadata
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lvcreate --type raid1 -m1 -n $lv1 -l 16 -an $vg "$dev1" "$dev2" "$dev5" "$dev6"
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lvcreate -n $lv2 -l 2 -an $vg "$dev3"
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lvcreate -n $lv3 -l 2 -an $vg "$dev4"
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lvconvert -y --type writecache --cachevol $lv2 $vg/$lv1
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lvconvert -y --type thin-pool --poolmetadata $lv3 --poolmetadataspare n $vg/$lv1
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setup_thin_lvs $lv1
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mount_thin_lvs
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write_thin_lvs
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lvconvert --splitcache --cachesettings cleaner=0 $vg/${lv1}_tdata
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lvs -o segtype $vg/$lv2 | grep linear
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diff_thin_lvs
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unmount_thin_lvs
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mount_thin_lvs
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diff_thin_lvs
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unmount_thin_lvs
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lvremove -y $vg/$lv1
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lvremove -y $vg/$lv2
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#
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# remove writecache from thin pool data when cachevol is missing
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#
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#
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# FIXME: add writecache to existing thin pool data
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#
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#
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# FIXME: thin pool data cannot be extended when it uses writecache
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#
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vgremove -ff $vg
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