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#!/bin/bash
#
# Wrapper script for 'naive' emulation of vdo manager tool for systems
# that no longer have this tool present
#
set -euE -o pipefail
# tool for formating 'old' VDO metadata format
LVM_VDO_FORMAT=${LVM_VDO_FORMAT-"oldvdoformat"}
# tool for shifting VDO metadata header by 2MiB
LVM_VDO_PREPARE=${LVM_VDO_PREPARE-"oldvdoprepareforlvm"}
# default vdo conf file
LVM_VDO_DEFAULT_CONF=${LVM_VDO_DEFAULT_CONF-"/tmp/vdoconf.yml"}
vdo_die_() {
echo -e "$@" >&2
return 1
}
vdo_verbose_() {
test -z "$vdo_verbose" || echo "$0:" "$@"
}
vdo_dry_() {
if test -n "$vdo_dry"; then
vdo_verbose_ "Dry execution" "$@"
return 0
fi
vdo_verbose_ "Executing" "$@"
"$@"
}
vdo_get_kb_size_with_unit_() {
local sz=${2-1} # 2nd. arg as unit - default 'k'
case "$sz" in
[mM]) sz=1024 ;;
esac
case "$1" in
*[mM]) sz=1024 ;;
*[gG]) sz=$(( 1024 * 1024 )) ;;
*[tT]) sz=$(( 1024 * 1024 * 1024 )) ;;
*[pP]) sz=$(( 1024 * 1024 * 1024 * 1024 )) ;;
esac
echo $(( sz * ${1%[kKmMgGtTpP]} ))
}
#
# Emulate functionality of deprecated 'vdo create'
#
vdo_create_() {
local cachesize=
local devsize=
local emulate512=disabled
local logicalsize=
local maxdiscardsize=
local slabbits=0 # 4k
local slabsize=
local sparse=
local table=
local vdo_compression_msg=
local vdo_dry=
local vdo_index_msg=
local vdo_logicalBlockSize=
local vdo_verbose=
local vdo_ackThreads=${vdo_ackThreads-1}
local vdo_bioRotationInterval=${vdo_bioRotationInterval-64}
local vdo_bioThreads=${vdo_bioThreads-4}
local vdo_blockMapCacheSize=${vdo_blockMapCacheSize-128M}
local vdo_blockMapPeriod=${vdo_blockMapPeriod-16380}
local vdo_compression=${vdo_compression-enabled}
local vdo_confFile=$LVM_VDO_DEFAULT_CONF # place some file in /tmp
local vdo_cpuThreads=${vdo_cpuThreads-2}
local vdo_deduplication=${vdo_deduplication-enabled}
local vdo_hashZoneThreads=${vdo_hashZoneThreads-1}
local vdo_indexCfreq=${vdo_indexCfreq-0}
local vdo_indexMemory=${vdo_indexMemory-0.25}
local vdo_indexSparse=${vdo_indexSparse-disabled}
local vdo_indexThreads=${vdo_indexThreads-0}
local vdo_logicalSize=${vdo_logicalSize-0}
local vdo_logicalThreads=${vdo_logicalThreads-1}
local vdo_maxDiscardSize=${vdo_maxDiscardSize-4K}
local vdo_name=${vdo_name-VDONAME}
local vdo_physicalThreads=${vdo_physicalThreads-1}
local vdo_slabSize=${vdo_slabSize-2G}
local vdo_uuid="VDO-$(uuidgen || echo \"f7a3ecdc-40a0-4e43-814c-4a7039a75de4\")"
local vdo_writePolicy=${vdo_writePolicy-auto}
while [ "$#" -ne 0 ]
do
case "$1" in
"--blockMapCacheSize") shift; vdo_blockMapCacheSize=$1 ;;
"--blockMapPeriod") shift; vdo_blockMapPeriod=$1 ;;
"--compression") shift; vdo_compression=$1 ;;
"--confFile"|"-f") shift; vdo_confFile=$1 ;;
"--deduplication") shift; vdo_deduplication=$1 ;;
"--device") shift; vdo_device=$1 ;;
"--emulate512") shift; emulate512=$1 ;;
"--indexMem") shift; vdo_indexMemory=$1 ;;
"--maxDiscardSize") shift; vdo_maxDiscardSize=$1 ;;
"--name"|"-n") shift; vdo_name=$1 ;;
"--sparseIndex") shift; vdo_indexSparse=$1 ;;
"--uuid") shift ;; # ignored
"--vdoAckThreads") shift; vdo_ackThreads=$1 ;;
"--vdoBioRotationInterval") shift; vdo_bioRotationInterval=$1 ;;
"--vdoBioThreads") shift; vdo_bioThreads=$1 ;;
"--vdoCpuThreads") shift; vdo_cpuThreads=$1 ;;
"--vdoHashZoneThreads") shift; vdo_hashZoneThreads=$1 ;;
"--vdoLogicalSize") shift; vdo_logicalSize=$1 ;;
"--vdoLogicalThreads") shift; vdo_logicalThreads=$1 ;;
"--vdoLogLevel") shift ;; # ignored
"--vdoPhysicalThreads") shift; vdo_physicalSize=$1 ;;
"--vdoSlabSize") shift; vdo_slabSize=$1 ;;
"--verbose"|"-d"|"--debug") vdo_verbose="-v" ;;
"--writePolicy") shift; vdo_writePolicy=$1 ;;
esac
shift
done
# Convert when set
case "$emulate512" in
"enabled") vdo_logicalBlockSize=512 ;;
"disabled") vdo_logicalBlockSize=4096 ;;
*) vdo_die_ "Invalid emulate512 setting."
esac
case "$vdo_deduplication" in
"enabled") vdo_index_msg="index-enable" ;;
"disabled") vdo_index_msg="index-disable";;
*) vdo_die_ "Invalid deduplication setting."
esac
case "$vdo_compression" in
"enabled") vdo_compression_msg="compression on" ;;
"disabled") vdo_compression_msg="compression off";;
*) vdo_die_ "Invalid compression setting."
esac
test -n "${vdo_device-}" || vdo_die_ "VDO device is missing"
blkid -c /dev/null -s UUID -o value "${vdo_device}" || true
devsize=$(blockdev --getsize64 "$vdo_device")
devsize=$(( devsize / 4096 )) # convert to 4KiB units
logicalsize=$(vdo_get_kb_size_with_unit_ "$vdo_logicalSize" M)
logicalsize=$(( logicalsize * 2 )) # 512B units
cachesize=$(vdo_get_kb_size_with_unit_ "$vdo_blockMapCacheSize" M)
cachesize=$(( cachesize / 4 )) # 4KiB units
maxdiscardsize=$(vdo_get_kb_size_with_unit_ "$vdo_maxDiscardSize" M)
maxdiscardsize=$(( maxdiscardsize / 4 )) # 4KiB units
test -e "$vdo_confFile" || {
cat > "$vdo_confFile" <<EOF
####################################################################
# THIS FILE IS MACHINE GENERATED. DO NOT EDIT THIS FILE BY HAND.
####################################################################
config: !Configuration
vdos:
EOF
}
cat >> "$vdo_confFile" <<EOF
$vdo_name: !VDOService
_operationState: finished
ackThreads: $vdo_ackThreads
activated: enabled
bioRotationInterval: $vdo_bioRotationInterval
bioThreads: $vdo_bioThreads
blockMapCacheSize: $(( cachesize * 4 ))K
blockMapPeriod: $vdo_blockMapPeriod
compression: $vdo_compression
cpuThreads: $vdo_cpuThreads
deduplication: $vdo_deduplication
device: $vdo_device
hashZoneThreads: $vdo_hashZoneThreads
indexCfreq: $vdo_indexCfreq
indexMemory: $vdo_indexMemory
indexSparse: $vdo_indexSparse
indexThreads: $vdo_indexThreads
logicalBlockSize: $vdo_logicalBlockSize
logicalSize: $(( logicalsize / 2 ))K
logicalThreads: $vdo_logicalThreads
maxDiscardSize: $(( maxdiscardsize * 4 ))K
name: $vdo_name
physicalSize: $(( devsize * 4 ))K
physicalThreads: $vdo_physicalThreads
slabSize: $vdo_slabSize
uuid: $vdo_uuid
writePolicy: $vdo_writePolicy
version: 538380551
EOF
slabsize=$(vdo_get_kb_size_with_unit_ "$vdo_slabSize")
while test "$slabsize" -gt 4 ; do
slabbits=$(( slabbits + 1 ))
slabsize=$(( slabsize / 2 ))
done
case "$vdo_indexSparse" in
"enabled") sparse="--uds-sparse" ;;
esac
vdo_dry_ "$LVM_VDO_FORMAT" $vdo_verbose $sparse\
--logical-size "$vdo_logicalSize" --slab-bits "$slabbits"\
--uds-checkpoint-frequency "$vdo_indexCfreq"\
--uds-memory-size "$vdo_indexMemory" "$vdo_device"
# V2 format
table="0 $logicalsize vdo V2 $vdo_device\
$devsize\
$vdo_logicalBlockSize\
$cachesize\
$vdo_blockMapPeriod\
on\
$vdo_writePolicy\
$vdo_name\
maxDiscard $maxdiscardsize\
ack $vdo_ackThreads\
bio $vdo_bioThreads\
bioRotationInterval $vdo_bioRotationInterval\
cpu $vdo_cpuThreads\
hash $vdo_hashZoneThreads\
logical $vdo_logicalThreads\
physical $vdo_physicalThreads"
vdo_dry_ dmsetup create "$vdo_name" --uuid "$vdo_uuid" --table "$table"
vdo_dry_ dmsetup message "$vdo_name" 0 "$vdo_index_msg"
vdo_dry_ dmsetup message "$vdo_name" 0 "$vdo_compression_msg"
}
#
# vdo stop
#
vdo_stop_() {
local vdo_confFile=$LVM_VDO_DEFAULT_CONF
local vdo_dry=
local vdo_force=
local vdo_name=
local vdo_verbose=
while [ "$#" -ne 0 ]
do
case "$1" in
"--confFile"|"-f") shift; vdo_confFile=$1 ;;
"--name"|"-n") shift; vdo_name=$1 ;;
"--verbose"|"-d"|"--debug") vdo_verbose="-v" ;;
"--force") vdo_force="--force" ;;
esac
shift
done
vdo_dry_ dmsetup status --target vdo "$vdo_name" 2>/dev/null || return 0
vdo_dry_ dmsetup remove $vdo_force "$vdo_name" || true
}
#
# vdo remove
#
vdo_remove_() {
local vdo_confFile=$LVM_VDO_DEFAULT_CONF
local vdo_name=
vdo_stop_ "$@"
while [ "$#" -ne 0 ]
do
case "$1" in
"--confFile"|"-f") shift; vdo_confFile=$1 ;;
"--name"|"-n") shift; vdo_name=$1 ;;
esac
shift
done
# remove entry from conf file
awk -v vdovolname="$vdo_name" 'BEGIN { have=0 }
$0 ~ "!VDOService" { have=0 }
$0 ~ vdovolname":" { have=1 }
{ if (have==0) { print } ;}
' "$vdo_confFile" >"${vdo_confFile}.new"
mv "${vdo_confFile}.new" "$vdo_confFile"
grep "!VDOService" "$vdo_confFile" || rm -f "$vdo_confFile"
}
#
# print_config_file
#
vdo_print_config_file_() {
local vdo_confFile=$LVM_VDO_DEFAULT_CONF
while [ "$#" -ne 0 ]
do
case "$1" in
"--confFile"|"-f") shift; vdo_confFile=$1 ;;
"--verbose"|"-d"|"--debug") ;;
"--logfile") shift ;; # ignore
esac
shift
done
cat "$vdo_confFile"
}
#
# vdo convert
#
vdo_convert_() {
local vdo_confFile=$LVM_VDO_DEFAULT_CONF
local vdo_dry=
local vdo_force=
local vdo_name=
local vdo_verbose=
local vdo_device=
while [ "$#" -ne 0 ]
do
case "$1" in
"--confFile"|"-f") shift; vdo_confFile=$1 ;;
"--name"|"-n") shift; vdo_name=$1 ;;
"--verbose"|"-d"|"--debug") vdo_verbose="-v" ;;
"--force") vdo_force="--force" ;;
esac
shift
done
vdo_device=$(awk -v vdovolname="$vdo_name" 'BEGIN { have=0 }
$0 ~ "!VDOService" { have=0 }
$0 ~ vdovolname":" { have=1 }
{ if (have==1 && $0 ~ "device:" ) { print $2 } ;}'\
"$vdo_confFile")
#dmsetup status --target vdo "$vdo_name" || true
vdo_dry_ "$LVM_VDO_PREPARE" "$vdo_device"
vdo_dry_ vdo_remove_ -f "$vdo_confFile" -n "$vdo_name" || true
}
#
# MAIN
#
case "${1-}" in
"create") shift; vdo_create_ "$@" ;;
"remove") shift; vdo_remove_ "$@" ;;
"stop") shift; vdo_stop_ "$@" ;;
"convert") shift; vdo_convert_ "$@" ;;
"printConfigFile") shift; vdo_print_config_file_ "$@" ;;
esac
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