commit f43bfe6e81e67b058174d4c6585fe31ad173a72a parent b2d03e3914f44560470af860ec214d4276814e18 Author: Jan Pobrislo <ccx@webprojekty.cz> Date: Tue, 28 Oct 2014 14:37:48 +0100 lvm & mdadm Diffstat:
| M | zsh-functions/confz_fs_init | | | 226 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 226 insertions(+), 0 deletions(-)
diff --git a/zsh-functions/confz_fs_init b/zsh-functions/confz_fs_init @@ -5,6 +5,232 @@ # +# helper for probing devices +fs_blkid_probe() { + typeset -gA fs_blkid_output + typeset -g fs_blkid_result + local out key val + fs_blkid_output=( ) + + [[ -b $1 ]] || die "no such block device: ${(qqq)1}" + + out=$( blkid -o export -p $1 ) + fs_blkid_result=$? + + case $fs_blkid_result in + (2);; + (0) while IFS='=' read key val; do + fs_blkid_output[$key]=$val + done <<<$out;; + (*) die "blkid probe failed on device: ${(qqq)1}" + esac +} + + +# helper for listing partition table +fs_parted_list() { + typeset -gA fs_parted_start fs_parted_end fs_parted_size fs_parted_type fs_parted_other + local out number start end size type other + + [[ -b $1 ]] || die "no such block device: ${(qqq)1}" + + out=$( parted --script $1 -- unit s print ) || \ + die "parted print of device failed: ${(qqq)1}" + + while read number start end size type other; do + [[ $number == [0-9]* ]] || continue + fs_parted_start[$number]=$start + fs_parted_end[$number]=$end + fs_parted_size[$number]=$size + fs_parted_type[$number]=$type + fs_parted_other[$number]=$other + done +} + + +# check for DOS-style MBR on device +confz_disklabel_dos_check() { + checkvars device + + fs_blkid_probe $vars[device] + if (($fs_blkid_result)); then + # empty label + do_command=( parted --script $vars[device] -- mklabel msdos ) + return 1 + elif [[ ${fs_blkid_output[PTTYPE]:-} == dos ]]; then + return 0 + else + die "$0: non-MBR label already present on device: ${(qqq)vars[device]}" + fi +} + + +# create swap partition +confz_swap_check() { + checkvars device + + fs_blkid_probe $vars[device] + if (($fs_blkid_result)); then + # empty label + do_command=( mkswap $vars[device] ) + return 1 + elif [[ ${fs_blkid_output[TYPE]:-} == swap ]]; then + return 0 + else + die "$0: non-swap label already present on device: ${(qqq)vars[device]}" + fi +} + + +# enable swap device +confz_swapon_check() { + local out device rest + + checkvars device + require swap :device + + out=$(swapon -s) || die "$0: swapon -s comman failed" + while read device rest; do + [[ $device == $vars[device] ]] && return 0 + done <<<$out + + do_command=( swapon $vars[device] ) + return 1 +} + + +# set up /dev/md* device +confz_mdraid_check() { + local level out seen_level seen_header devices present + local -a seen_devices devices + local -A level_map + + checkvars md_device raid_devices level + + devices=( ${(z)vars[raid_devices]} ) + + level_map=( + linear linear + raid0 0 + 0 0 + stripe 0 + raid1 1 + 1 1 + mirror 1 + raid4 4 + 4 4 + raid5 5 + 5 5 + raid6 6 + 6 6 + raid10 10 + 10 10 + multipath multipath + mp multipath + faulty faulty + container container + ) + level=${level_map[${vars[level]}]} + + if [[ -b $vars[md_device] ]]; then + out=$( mdadm --detail $vars[md_device] ) || \ + die "$0: mdadm --detail ${(qqq)vars[md_device]} returned $?" + seen_header=0 + while read line; do + if ! (($seen_header)); then + case $line in + ('Raid Level :'*) + seen_level=$level_map[${line#* : }];; + (Number*Major*Minor*RaidDevice*State) + seen_header=1;; + esac + else + seen_devices+=( ${${=line}[-1]} ) + fi + done <<<$out + + [[ $level == $seen_level ]] || \ + die "$0: raid level mismatch." \ + "expected: ${(q)level} got: ${(q)seen_level}" + + [[ ${(o)vars[raid_devices]} == ${(o)seen_devices} ]] || \ + die $0$': raid device mismatch\nexpected:' \ + ${(oqqq)vars[raid_devices]}$'\ngot:' \ + ${(oqqq)seen_devices} + + return 0 + fi + + for device in $devices; do + fs_blkid_probe $device + (( $+present )) || present=$fs_blkid_result + (( $present != $fs_blkid_result )) || \ + die "$0: only some devices present" + if ! (($fs_blkid_result)); then + [[ ${fs_blkid_output[TYPE]:-} == linux_raid_member ]] || \ + die "$0: non-raid label present on device: ${(qqq)device}" + fi + done + + if (($present)); then + # empty labels + do_command=( mdadm --create -l $level -n $#devices $vars[md_device] $devices ) + else + # already created + do_command=( mdadm --assemble $vars[md_device] $devices ) + fi +} + + +# set up LVM2 physical volume +confz_physical_volume_check() { + checkvars device + fs_blkid_probe $vars[device] + if (($fs_blkid_result)); then + # no label on blockdev + do_command=( lvm pvcreate $vars[device] ) + return 1 + elif [[ ${fs_blkid_output[TYPE]:-} == LVM2_member ]]; then + return 0 + else + die "$0: non-LVM2 label on ${(qqq)vars[device]}" + fi +} + + +# configure LVM2 volume group +confz_volume_group_check() { + local -A devices volumes + local -a vg_devices + local device + + [[ -n ${vars[vg_name]:=${DEFAULT_VG}} ]] || \ + die "$0: DEFAULT_VG is unset and no 'vg_name' was passed" + + checkvars vg_devices + + vg_devices=( ${(z)vars[vg_devices]} ) + for device in $vg_devices; do + require physical_volume device=$device + done + + volumes=( $(lvm vgs --noheadings -o vg_name,pv_count) ) || \ + die "$0: lvm vgs command returned error" + if ! (($+volumes[${vars[vg_name]}])); then + do_command=( lvm vg_create ${vars[vg_name]} $vg_devices ) + return 1 + fi + devices=( $(lvm pvs --noheadings -o pv_name,vg_name) ) || \ + die "$0: lvm pvs command returned error" + do_command=( lvm vgextend ${vars[vg_name]} ) + for device in $vg_devices; do + [[ $+devices[$device] && $devices[$device] == $vars[vg_name] ]] || \ + do_command+=( $device ) + done + (( $#do_command == 3 )) +} + + # configure LVM2 logical volume confz_logical_volume_check() { [[ -n ${vars[vg_name]:=${DEFAULT_VG}} ]] || \