160 lines
2.8 KiB
Bash
Executable File
160 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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#
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# A simple script to simply the loading/unloading the ZFS module
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# stack. It should probably be considered a first step towards
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# a full ZFS init script when that is needed.
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#
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if [ ! -f ../.script-config ]; then
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echo "You must build your source tree"
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exit 1
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fi
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. ../.script-config
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PROG="<define PROG>"
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VERBOSE=
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VERBOSE_FLAG=
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DUMP_LOG=
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ERROR=
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MODULES=()
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LOSETUP=/sbin/losetup
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die() {
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echo -e "${PROG}: $1" >&2
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exit 1
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}
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msg() {
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if [ ${VERBOSE} ]; then
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echo "$@"
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fi
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}
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spl_dump_log() {
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sysctl -w kernel.spl.debug.dump=1 &>/dev/null
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local NAME=`dmesg | tail -n 1 | cut -f5 -d' '`
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${SPLBUILD}/cmd/spl ${NAME} >${NAME}.log
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echo
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echo "Dumped debug log: ${NAME}.log"
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tail -n1 ${NAME}.log
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echo
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return 0
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}
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check_modules() {
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local LOADED_MODULES=()
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local MISSING_MODULES=()
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for MOD in ${MODULES[*]}; do
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local NAME=`basename $MOD .ko`
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if /sbin/lsmod | egrep -q "^${NAME}"; then
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LOADED_MODULES=(${NAME} ${LOADED_MODULES[*]})
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fi
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if [ ! -f ${MOD} ]; then
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MISSING_MODULES=("\t${MOD}\n" ${MISSING_MODULES[*]})
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fi
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done
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if [ ${#LOADED_MODULES[*]} -gt 0 ]; then
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ERROR="Unload these modules with '${PROG} -u':\n"
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ERROR="${ERROR}${LOADED_MODULES[*]}"
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return 1
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fi
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if [ ${#MISSING_MODULES[*]} -gt 0 ]; then
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ERROR="The following modules can not be found,"
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ERROR="${ERROR} ensure your source trees are built:\n"
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ERROR="${ERROR}${MISSING_MODULES[*]}"
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return 1
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fi
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return 0
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}
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load_module() {
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local NAME=`basename $1 .ko`
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if [ ${VERBOSE} ]; then
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echo "Loading $NAME ($@)"
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fi
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/sbin/insmod $* || ERROR="Failed to load $1" return 1
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return 0
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}
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load_modules() {
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for MOD in ${MODULES[*]}; do
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local NAME=`basename ${MOD} .ko`
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local VALUE=
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for OPT in "$@"; do
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OPT_NAME=`echo ${OPT} | cut -f1 -d'='`
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if [ ${NAME} = "${OPT_NAME}" ]; then
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VALUE=`echo ${OPT} | cut -f2- -d'='`
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fi
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done
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load_module ${MOD} ${VALUE} || return 1
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done
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if [ ${VERBOSE} ]; then
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echo "Successfully loaded ZFS module stack"
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fi
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return 0
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}
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unload_module() {
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local NAME=`basename $1 .ko`
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if [ ${VERBOSE} ]; then
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echo "Unloading $NAME ($@)"
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fi
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/sbin/rmmod $NAME || ERROR="Failed to unload $NAME" return 1
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return 0
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}
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unload_modules() {
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local MODULES_REVERSE=( $(echo ${MODULES[@]} |
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awk '{for (i=NF;i>=1;i--) printf $i" "} END{print ""}') )
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for MOD in ${MODULES_REVERSE[*]}; do
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local NAME=`basename ${MOD} .ko`
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if /sbin/lsmod | egrep -q "^${NAME}"; then
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if [ "${DUMP_LOG}" -a ${NAME} = "spl" ]; then
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spl_dump_log
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fi
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unload_module ${MOD} || return 1
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fi
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done
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if [ ${VERBOSE} ]; then
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echo "Successfully unloaded ZFS module stack"
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fi
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return 0
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}
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unused_loop_device() {
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for DEVICE in `ls -1 /dev/loop*`; do
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${LOSETUP} ${DEVICE} &>/dev/null
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if [ $? -ne 0 ]; then
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echo ${DEVICE}
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return
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fi
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done
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die "Error: Unable to find unused loopback device"
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}
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