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#!/bin/ash
# Copyright (c) 2013 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your feedback to feedback@openslx.org
#
# General information about OpenSLX can be found under http://openslx.org
#
# Local hard disk autodetection script for OpenSLX linux stateless clients,
# detecting swap and special partitions
#############################################################################
# Mount point for persistent scratch partition (type 45)
MOUNT_POINT_45="/opt/openslx/persistent"
PARTITION_FILE="/run/openslx/partitions"
readonly MOUNT_POINT_45 PARTITION_FILE
mkdir -p "/run/openslx"
# General formatter for the /tmp partition on a local harddisk
format_disk () {
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="" # Global var!
local target="$1"
local fslist="xfs jfs ext3 ext2 ext4"
local fs
local path
[ $# -ge 2 ] && fslist="$2"
for fs in $fslist ; do
if grep -q "\\b${fs}\\b" "/proc/filesystems"; then
# Filesystem already supported by running kernel
:
elif modprobe "${fs}"; then
# Filesystem module could be loaded and should be supported now
:
else
# Not supported, try next one
continue
fi
if which "mkfs.$fs" ; then
case "$fs" in
xfs)
fopt="-f -b size=4k -s size=4k -l size=512b" # fastest formatting possible :)
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="-o noexec"
;;
ext2)
fopt="-Fq"
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="-o nocheck,noexec"
;;
ext3|ext4)
fopt="-Fq"
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="-o noexec"
;;
reiserfs)
fopt="-f"
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="-o noexec"
;;
jfs)
fopt="-q"
MOUNT_OPTIONS_SET_BY_FORMAT_DISK="-o noexec"
;;
*)
fopt=
MOUNT_OPTIONS_SET_BY_FORMAT_DISK=
;;
esac
mkfs.$fs ${fopt} "${target}" && return 0 # Success!
fi
done
return 1
}
mount_temp () {
local PRE=$(pwd)
if ! cd /tmp; then
mount_temp_fallback $@
return $?
fi
mount $@ /tmp || return 1
chmod a+rwxt /tmp
# Move stuff from working directory, which is old /tmp, to new /tmp just mounted
mv ./* ./.[!.]* ./..?* /tmp/ 2> /dev/null
local OLD=$(LANG=C ls -alh | grep -v -E ' \.\.?$' | grep -v '^total')
[ -n "$OLD" ] && echo -- "Leftovers:" && echo -- "$OLD"
cd "$PRE"
}
mount_temp_fallback () {
mkdir -p /tmptmp
mv /tmp/* /tmp/.* /tmptmp/ 2> /dev/null
mount $@ /tmp || return 1
chmod a+rwxt /tmp
mv /tmptmp/* /tmptmp/.* /tmp/
rmdir /tmptmp
return 0
}
fdisk -l | grep '^/dev/' > "$PARTITION_FILE"
if [ ! -s "$PARTITION_FILE" ]; then
udevadm trigger
sleep 3
udevadm settle
fdisk -l | grep '^/dev/' > "$PARTITION_FILE"
fi
echo "Partitions:"
cat "$PARTITION_FILE"
# Get all partitions with given id (list of /dev/sdXX)
get_all_with_id () {
[ -z "$1" ] && return
local ID=$1
awk '{if (($2 == "*" && $6 == "'$ID'") || ($2 != "*" && $5 == "'$ID'")) print $1}' "$PARTITION_FILE" # watch out for non-spaced '$ID'
}
# Check for standard swap partitions and make them available to the system
HAVE_SWAP=no
for PART_DEV in $(get_all_with_id 82) '/dev/disk/by-partlabel/Linux\x20swap'; do
[ -e "$PART_DEV" ] || continue # Since Linux\x20swap is hard-coded and might not exist
if swapon "$PART_DEV" -p 10; then
HAVE_SWAP=yes # low priority, in case we have zram swap, prefer that)
echo -e "$PART_DEV\tswap\t\tswap\t\tdefaults\t 0 0" >> "/etc/fstab"
fi
done
# We use special non assigned partition type (id44) for harddisk scratch
# space, thus no normal filesystem will be incidentally deleted or
# corrupted
HAVE_TEMP=no
for PART_DEV in $(get_all_with_id 44) '/dev/disk/by-partlabel/OpenSLX-ID44'; do
[ -e "$PART_DEV" ] || continue # Since OpenSLX-ID44 is hard-coded and might not exist
# check for supported filesystem and formatter
if format_disk "$PART_DEV"; then
# echo "$PART_DEV is mounted to /mnt/tmp at $(sysup)" >/tmp/tmpready
mount_temp "$MOUNT_OPTIONS_SET_BY_FORMAT_DISK" "$PART_DEV" || continue
echo -e "${PART_DEV}\t/tmp\t\tauto\t\tnoexec\t 0 0" >> "/etc/fstab"
HAVE_TEMP=yes
break
else
echo "formatting failed for some reason"
fi # Made this non-forking, systemd should handle it - 2013-05-28
done
# Put detected linux partitions (83) into /etc/fstab with "noauto"
HAVE_PARTITION_45=no
for PART_DEV in $(get_all_with_id 83) '/dev/disk/by-partlabel/OpenSLX-ID45'; do
mkdir -p "/media/${PART_DEV#/dev/*}"
echo -e "${PART_DEV}\t/media/${PART_DEV#/dev/*}\tauto\t\tnoauto,noexec\t 0 0" >> "/etc/fstab"
done
# special partition 45 (persistent scratch) to $MOUNT_POINT_45
for PART_DEV in $(get_all_with_id 45); do
mkdir -p "$MOUNT_POINT_45"
if ! mount -t auto -o noexec "${PART_DEV}" "$MOUNT_POINT_45"; then
format_disk "$PART_DEV" "ext4 xfs jfs ext3" || continue
mount -t auto -o noexec "${PART_DEV}" "$MOUNT_POINT_45" || continue
fi
echo -e "${PART_DEV}\t${MOUNT_POINT_45}\tauto\t\tnoauto,noexec\t\t 0 0" >> "/etc/fstab"
HAVE_PARTITION_45=yes
break
done
# and 46 to /media/devXX
for PART_DEV in $(get_all_with_id 46); do
mkdir -p "/media/${PART_DEV#/dev/*}"
#mount -t auto ${PART_DEV} /mnt/media/${PART_DEV#/dev/*} \n\
#test -d /mnt/media/${PART_DEV#/dev/*}/home && \
# ln -sf /media/${PART_DEV#/dev/*} /var/home
echo -e "${PART_DEV}\t/media/${PART_DEV#/dev/*}\tauto\t\tnoauto\t\t 0 0" >> "/etc/fstab"
done
if [ "$HAVE_PARTITION_45" = "no" ] && [ -d "$MOUNT_POINT_45" ]; then
rm -f -- "$MOUNT_POINT_45"
fi
mount -a
# Make tmpfs if nothing could be mounted for /tmp
# 2016-10-12: Use a sane size of 66% which should be generous enough and prevent the machine from
# just crashing if RAM is too full. We previously hugely oversized since vmware wants at least as
# much free space as the VMs RAM; however, this requirement can be disabled with a vmx setting,
# which we're now doing.
if [ "$HAVE_TEMP" = "no" ]; then
mount_temp -t tmpfs -o size=66% none
slxlog "partition-temp" "Running /tmp on tmpfs only!" "$PARTITION_FILE"
fi
if [ "$HAVE_SWAP" = "no" ]; then
TOTAL_RAM=$(grep ^MemTotal /proc/meminfo | awk '{print $2}')
if [ -n "$TOTAL_RAM" ] && [ "$TOTAL_RAM" -lt "3000000" ]; then
slxlog "partition-swap" "Have no (formatted) swap partition, using zram swap only!" "$PARTITION_FILE"
fi
fi
exit 0
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