Re: s/hotplug/udev

Ah ça (me) rassure ! :-)

Dans ma règle udev, j'appelle un 1er script qui lance le deuxième en arrière plan. Le tout avec un verrou basé sur l'existence d'un fichier qui évite de le relancer si il tourne déja.

Désolé, mes scripts ne sont pas dispos car ils contiennent des dépendances vers d'autres scripts (et ce n'est pas libre ;-( car pas encore entièrement fini et dépoussiérés de choses "en dur")

Mais bon, voici quelques extraits:

-----------------------------------
la règle udev:

# detect exactly a given external usb disk (brand/model/serial)
# then launch backup to it

# to find sysfs{*} data:
# 1) udevinfo -q path -n /dev/sdX (or -q all to see all values)
# 2) udevinfo -a -p value_from_previous_command

# NOTE: run command must be given with full path
# variable ACTION can be tested (will be "add" or "remove")
# WARNING: script is called 2 times on disk insertion !!!
# In fact, one time for the disk and one time for each partition !!!
# WARNING: remove does not work, script will NOT be called on disk removal !!!

BUS=="usb", SYSFS{idProduct}=="xxxx", SYSFS{idVendor}=="xxxx", SYSFS{serial}=="xxxxxxxxxxxxxxxx", NAME="%k", SYMLINK+="diskusb4backup%n", OWNER="root", GROUP="root", MODE="0770", RUN+="/usr/local/sbin/backup_usbdisk.sh"

-----------------------------------
le 1er script:

#!/bin/bash

# this script will be called by the udev rule which detects a certain
# external usb disk based on manufacturer, model and serial number
#
# BUG: it is called many times (for disk and for each partitions)

logger -t xxx 0ドル started

# random delay 0..9
DELAY=$(($RANDOM % 10))
logger -t xxx 0ドル sleeping for ${DELAY} seconds...
sleep ${DELAY}

bash backup_usbdisk2.sh tag &

logger -t xxx 0ドル finished

-----------------------------------
le 2ème script:

#!/bin/bash

# backup_usbdisk2.sh
# called by backup_usbdisk.sh

set -x

CURR_DATETIME=$(date "+%F_%H:%M:%S_%N")

logger -t xxx "0ドル started : udev action=${ACTION} at ${CURR_DATETIME} , user=$(whoami)"

# check tag argument
if [ "1ドル" != "tag" ]; then
logger -t xxx "0ドル : Script should not be called directly !"
exit 1
fi

# source common functions
COMMFONC_FILE="common_funcs.sh"
which ${COMMFONC_FILE} >/dev/null 2>&1
if [ $? -eq 0 ]; then
. ${COMMFONC_FILE}
else
logger -t xxx "0ドル : Script file with common functions (${COMMFONC_FILE}) not found !"
exit 1
fi

# source config file
CONFIG_FILE="/etc/xxx/backup.config"
which ${CONFIG_FILE} >/dev/null 2>&1
if [ $? -eq 0 ]; then
. ${CONFIG_FILE}
else
logger -t xxx "0ドル : Config file (${CONFIG_FILE}) not found !"
exit 1
fi

# script execution is blocked ?
if [ "${USBDISK_RUNBLOCK}" == "1" ]; then
logger -t xxx "0ドル : Script execution is actually blocked by config file option !"
exit 1
fi

# exit function
trap_exit () {
if [ "$MOUNTED" == "1" ]; then
umount ${DISK_PART} 2>/dev/null
fi
script_unlock >/dev/null
}
export -f trap_exit

trap trap_exit EXIT SIGINT SIGTERM

# lock execution (bug ? udev will call this script many times !)
if [ "$(test_script_lock)" == "1" ]; then
logger -t xxx "0ドル is already running..."
sleep 1s
exit 1
fi
script_lock >/dev/null

# do one backup type
one_backup () {
# ici y'a le backup à proprement parler...
MOUNTED=0
sync
}

MOUNTED=0

if [ "${ACTION}" == "add" ]; then
one_backup

if [ "${ACTION}" == "remove" ]; then
# nothing to do ?
logger -t xxx "0ドル : Remove done"
fi

script_unlock >/dev/null
exit 0

Quand j'aurais tout fini, je le mettrais à disposition car il permet de sauvegarder sur CD ou DVD en faisant automatiquement des "rondelles" de la bonne taille + des fichiers par2 pour l'ecc. Je n'ai rien trouvé de tout prêt pour faire ça donc je me suis lancé la dedans...

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