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#!/bin/sh
. /usr/lib/tuned/functions
function ver_comp () {
if [[ $1 == $2 ]]
then
return 0
fi
local IFS=.
local i ver1=($1) ver2=($2)
# fill empty fields in ver1 with zeros
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
do
ver1[i]=0
done
for ((i=0; i<${#ver1[@]}; i++))
do
if [[ -z ${ver2[i]} ]]
then
# fill empty fields in ver2 with zeros
ver2[i]=0
fi
if ((10#${ver1[i]} > 10#${ver2[i]}))
then
return 1
fi
if ((10#${ver1[i]} < 10#${ver2[i]}))
then
return 2
fi
done
return 0
}
function lve_ver_comp () {
local current_lve_ver=$(echo $1 | awk -F "lve" '{print $2}' | awk -F ".el" '{print $1}')
local supported_lve_ver=$2
ver_comp "${current_lve_ver}" "${supported_lve_ver}"
if [[ $? == 0 || $? == 1 ]]; then
return 0
else
return 1
fi
}
start() {
local dev_path
local dev_name
local rotational
local elevator
local vz_module
if [ -e /proc/vz/vestat ]; then
# CloudLinux profile settings aren't compatible with OpenVZ
# set parameters for oom-killer
if [ -e /proc/vz/oom_score_adj ]; then
cat /etc/tuned-profiles-cloudlinux/oom-groups.conf > /proc/vz/oom_score_adj
fi
return 0
fi
lve_ver_comp "$(uname -r)" "1.4.50" # minimal supported version for `vfs_cache_min_ratio` kernel param (see. LU-578)
if [ $? == 0 ] && [ -f /proc/sys/vm/vfs_cache_min_ratio ]; then
echo 0 > /proc/sys/vm/vfs_cache_min_ratio
fi
# disable tcache/tswap OpenVZ subsystems
for vz_module in tcache tswap; do
save_set_sys "active_module_${vz_module}" "/sys/module/${vz_module}/parameters/active" 'N'
done
# block devices configuration
for dev_path in ${DISKS_SYS}; do
dev_name=$(eval LANG=C /bin/basename "${dev_path}" 2>/dev/null)
rotational=$(eval LANG=C /bin/cat "${dev_path}/queue/rotational" 2>/dev/null)
if [ "${rotational}" -eq 1 ]; then
elevator='deadline'
else
elevator='noop'
fi
set_elevator "${dev_path}/queue/scheduler" ${elevator} 2>/dev/null
save_set_sys "nr_requests_${dev_name}" "${dev_path}/queue/nr_requests" '1024' 2>/dev/null
done
# disable hugepages
save_set_sys 'transparent_hugepage_khugepaged_defrag' '/sys/kernel/mm/transparent_hugepage/khugepaged/defrag' '0' 2>/dev/null
save_set_sys 'transparent_hugepage_defrag' '/sys/kernel/mm/transparent_hugepage/defrag' 'never' 2>/dev/null
save_set_sys 'transparent_hugepage_enabled' '/sys/kernel/mm/transparent_hugepage/enabled' 'never' 2>/dev/null
return 0
}
stop() {
local dev_path
local dev_name
local vz_module
if [ -e /proc/vz/vestat ]; then
# CloudLinux profile settings aren't compatible with OpenVZ
return 0
fi
# revert tcache/tswap OpenVZ subsystems state
for vz_module in tcache tswap; do
restore_sys "active_module_${vz_module}" "/sys/module/${vz_module}/parameters/active"
done
# revert block devices configuration
for dev_path in ${DISKS_SYS}; do
dev_name=$(eval LANG=C /bin/basename "${dev_path}" 2>/dev/null)
restore_elevator "${dev_path}/queue/scheduler" 2>/dev/null
restore_sys "nr_requests_${dev_name}" "${dev_path}/queue/nr_requests" 2>/dev/null
done
# revert hugepages configuration
restore_sys 'transparent_hugepage_khugepaged_defrag' '/sys/kernel/mm/transparent_hugepage/khugepaged/defrag' 2>/dev/null
restore_sys 'transparent_hugepage_defrag' '/sys/kernel/mm/transparent_hugepage/defrag' 2>/dev/null
restore_sys 'transparent_hugepage_enabled' '/sys/kernel/mm/transparent_hugepage/enabled' 2>/dev/null
return 0
}
process $@