mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-23 21:35:29 +03:00
2c80ace622
Example: ~> lvconvert --type raid1 vg/mirror_lv Steps to convert "mirror" to "raid1" 1) Allocate a RAID metadata LV for each mirror image from the same PVs on which they are located. 2) Clear the metadata LVs. This involves writing LVM metadata, so we don't change any aspects of the mirror LV before this so that the user can easily remove LVs from the failed convert attempt while retaining the original mirror. 3) Remove the mirror log, if it exists. 4) Add metadata LVs to mirror LV 5) Rename mirror sub-lvs (s/mimage/rimage/) 6) Change flags and segtype from mirror to raid1
198 lines
4.4 KiB
Bash
198 lines
4.4 KiB
Bash
#!/bin/bash
|
|
|
|
# Copyright (C) 2011 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
|
|
|
|
# is_in_sync <VG/LV>
|
|
function is_in_sync()
|
|
{
|
|
local dm_name
|
|
local a
|
|
local b
|
|
local idx
|
|
|
|
dm_name=`echo $1 | sed s:-:--: | sed s:/:-:`
|
|
|
|
if ! a=(`dmsetup status $dm_name`); then
|
|
echo "Unable to get sync status of $1"
|
|
exit 1
|
|
fi
|
|
|
|
# 6th argument is the sync ratio for RAID and mirror
|
|
echo ${a[@]}
|
|
if [ ${a[2]} = "raid" ]; then
|
|
# Last argument is the sync ratio for RAID
|
|
idx=$((${#a[@]} - 1))
|
|
elif [ ${a[2]} = "mirror" ]; then
|
|
# 4th Arg tells us how far to the sync ratio
|
|
idx=$((${a[3]} + 4))
|
|
else
|
|
echo "Unable to get sync ratio for target type '${a[2]}'"
|
|
exit 1
|
|
fi
|
|
b=(`echo ${a[$idx]} | sed s:/:' ':`)
|
|
|
|
if [ ${b[0]} != ${b[1]} ]; then
|
|
echo "$dm_name (${a[3]}) is not in-sync"
|
|
return 1
|
|
fi
|
|
|
|
if [[ ${a[$(($idx - 1))]} =~ a ]]; then
|
|
echo "$dm_name in-sync, but 'a' characters in health status"
|
|
exit 1
|
|
fi
|
|
|
|
if [ ${a[2]} = "raid" ]; then
|
|
echo "$dm_name (${a[3]}) is in-sync"
|
|
else
|
|
echo "$dm_name (${a[2]}) is in-sync"
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
# wait_for_sync <VG/LV>
|
|
function wait_for_sync()
|
|
{
|
|
local i=0
|
|
|
|
while ! is_in_sync $1; do
|
|
sleep 2
|
|
i=$(($i + 1))
|
|
if [ $i -gt 500 ]; then
|
|
echo "Sync is taking too long - assume stuck"
|
|
exit 1
|
|
fi
|
|
done
|
|
}
|
|
|
|
function is_raid_available()
|
|
{
|
|
local a
|
|
|
|
modprobe dm-raid
|
|
a=(`dmsetup targets | grep raid`)
|
|
if [ -z $a ]; then
|
|
echo "RAID target not available"
|
|
return 1
|
|
fi
|
|
if [ ${a[1]} != "v1.1.0" ]; then
|
|
echo "Bad RAID version"
|
|
return 1
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
########################################################
|
|
# MAIN
|
|
########################################################
|
|
is_raid_available || exit 200
|
|
|
|
aux prepare_vg 5 80
|
|
|
|
###########################################
|
|
# RAID1 convert tests
|
|
###########################################
|
|
for i in 1 2 3 4; do
|
|
for j in 1 2 3 4; do
|
|
if [ $i -eq 1 ]; then
|
|
from="linear"
|
|
else
|
|
from="$i-way"
|
|
fi
|
|
if [ $j -eq 1 ]; then
|
|
to="linear"
|
|
else
|
|
to="$j-way"
|
|
fi
|
|
echo "Converting from $from to $to"
|
|
if [ $i -eq 1 ]; then
|
|
# Shouldn't be able to create with just 1 image
|
|
not lvcreate --type raid1 -m 0 -l 2 -n $lv1 $vg
|
|
|
|
lvcreate -l 2 -n $lv1 $vg
|
|
else
|
|
lvcreate --type raid1 -m $(($i - 1)) -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
fi
|
|
lvconvert -m $((j - 1)) $vg/$lv1
|
|
|
|
# FIXME: ensure no residual devices
|
|
|
|
if [ $j -eq 1 ]; then
|
|
check linear $vg $lv1
|
|
fi
|
|
lvremove -ff $vg
|
|
done
|
|
done
|
|
|
|
#
|
|
# FIXME: Add tests that specify particular devices to be removed
|
|
#
|
|
|
|
###########################################
|
|
# RAID1 split tests
|
|
###########################################
|
|
# 3-way to 2-way/linear
|
|
lvcreate --type raid1 -m 2 -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
lvconvert --splitmirrors 1 -n $lv2 $vg/$lv1
|
|
check lv_exists $vg $lv1
|
|
check linear $vg $lv2
|
|
# FIXME: ensure no residual devices
|
|
lvremove -ff $vg
|
|
|
|
# 2-way to linear/linear
|
|
lvcreate --type raid1 -m 1 -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
lvconvert --splitmirrors 1 -n $lv2 $vg/$lv1
|
|
check linear $vg $lv1
|
|
check linear $vg $lv2
|
|
# FIXME: ensure no residual devices
|
|
lvremove -ff $vg
|
|
|
|
# 3-way to linear/2-way
|
|
lvcreate --type raid1 -m 2 -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
# FIXME: Can't split off a RAID1 from a RAID1 yet
|
|
should lvconvert --splitmirrors 2 -n $lv2 $vg/$lv1
|
|
#check linear $vg $lv1
|
|
#check lv_exists $vg $lv2
|
|
# FIXME: ensure no residual devices
|
|
lvremove -ff $vg
|
|
|
|
###########################################
|
|
# RAID1 split + trackchanges / merge
|
|
###########################################
|
|
# 3-way to 2-way/linear
|
|
lvcreate --type raid1 -m 2 -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
lvconvert --splitmirrors 1 --trackchanges $vg/$lv1
|
|
check lv_exists $vg $lv1
|
|
check linear $vg ${lv1}_rimage_2
|
|
lvconvert --merge $vg/${lv1}_rimage_2
|
|
# FIXME: ensure no residual devices
|
|
lvremove -ff $vg
|
|
|
|
###########################################
|
|
# Mirror to RAID1 conversion
|
|
###########################################
|
|
for i in 1 2 3 ; do
|
|
lvcreate --type mirror -m $i -l 2 -n $lv1 $vg
|
|
wait_for_sync $vg/$lv1
|
|
lvconvert --type raid1 $vg/$lv1
|
|
lvremove -ff $vg
|
|
done
|
|
|
|
exit 0
|