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|
. /lib/partman/lib/lvm-base.sh
# List PVs to be removed to initialize a device
remove_lvm_find_vgs() {
local realdev vg pvs pv disk
realdev="$1"
# Simply exit if there is no lvm support
[ -f /var/lib/partman/lvm ] || exit 0
# Check all VGs to see which PV needs removing
# BUGME: the greps in this loop should be properly bounded so they
# do not match on partial matches!
# Except that we want partial matches for disks...
for vg in $(vg_list); do
pvs="$(vg_list_pvs $vg)"
if ! echo "$pvs" | grep -q "$realdev"; then
continue
fi
pvs="$(echo -n "$pvs" | grep -v "$realdev")"
# Make sure the VG doesn't span any other disks
if [ "$pvs" ]; then
# Except on disks that are going to be auto-partitioned
db_get partman-auto/disk || RET=""
for disk in $RET; do
pvs="$(echo -n "$pvs" | grep -v "$disk")"
done
if [ "$pvs" ]; then
log-output -t partman-lvm vgs
db_input critical partman-lvm/device_remove_lvm_span || true
db_go || true
return 1
fi
fi
echo "$vg"
done
}
# Wipes any traces of LVM from a disk
# Normally called from a function that initializes a device
# Note: if the device contains an empty PV, it will not be removed
device_remove_lvm() {
local dev realdev tmpdev restart confirm
local pvs pv vgs vg lvs lv pvtext vgtext lvtext
dev="$1"
cd $dev
# Check if the device already contains any physical volumes
realdev=$(mapdevfs "$(cat $dev/device)")
if ! pv_on_device "$realdev"; then
return 0
fi
vgs="$(remove_lvm_find_vgs $realdev)" || return 1
[ "$vgs" ] || return 0
pvs=""
lvs=""
for vg in $vgs; do
pvs="${pvs:+$pvs$NL}$(vg_list_pvs $vg)"
lvs="${lvs:+$lvs$NL}$(vg_list_lvs $vg)"
done
# Ask for permission to erase LVM volumes
lvtext=""
for lv in $lvs; do
lvtext="${lvtext:+$lvtext, }$lv"
done
vgtext=""
for vg in $vgs; do
vgtext="${vgtext:+$vgtext, }$vg"
done
pvtext=""
for pv in $pvs; do
pvtext="${pvtext:+$pvtext, }$pv"
done
db_fget partman-lvm/device_remove_lvm seen
if [ $RET = true ]; then
# Answer has been preseeded
db_get partman-lvm/device_remove_lvm
confirm=$RET
else
db_subst partman-lvm/device_remove_lvm LVTARGETS "$lvtext"
db_subst partman-lvm/device_remove_lvm VGTARGETS "$vgtext"
db_subst partman-lvm/device_remove_lvm PVTARGETS "$pvtext"
db_input critical partman-lvm/device_remove_lvm
db_go || return 1
db_get partman-lvm/device_remove_lvm
confirm=$RET
db_reset partman-lvm/device_remove_lvm
fi
if [ "$confirm" != true ]; then
return 255
fi
# We need devicemapper support here
modprobe dm-mod >/dev/null 2>&1
for vg in $vgs; do
# Remove LVs from the VG
for lv in $(vg_list_lvs $vg); do
lv_delete $vg $lv
done
# Remove the VG
vg_delete $vg
done
# Remove the PVs and unlock the devices
for pv in $pvs; do
pv_delete $pv
partman_unlock_unit $pv
done
# Make sure that parted has no stale LVM info
restart=""
for tmpdev in $DEVICES/*; do
[ -d "$tmpdev" ] || continue
realdev=$(cat $tmpdev/device)
if [ -b "$realdev" ] || \
! $(echo "$realdev" | grep -q "/dev/mapper/"); then
continue
fi
rm -rf $tmpdev
restart=1
done
if [ "$restart" ]; then
return 99
fi
return 0
}
|
