Записки программиста, обо всем и ни о чем. Но, наверное, больше профессионального.

2011-03-03

Автостарт для rtorrent

Хотя сделал я себе губозакатывательную торрентокачательную машинку, но как-то незавершенно. Внешний диск сам не монтируется, rtorrent сам не стартует — все надо ручкамЕ запускать. Не комильфо.
А тут как раз в блоге про монтирование раздела ntfs через fstab. И я сподвигся. Делюсь рабочим рецептом.

Сначала обеспечил монтирование внешнего диска с ntfs

// поскольку вручную я монтировал эдак
# mount -t ntfs /dev/sdb1 /mnt/sams640
// то и автоматом будет так
# chmod 777 /mnt/sams640
// узнал ID раздела
# blkid
/dev/sdb1: LABEL="sams640" UUID="EE728B81728B4CF1" TYPE="ntfs"
// внес запись в fstab
# nano /etc/fstab
# extusb sams 640
UUID=EE728B81728B4CF1 /mnt/sams640 ntfs-3g defaults,users 0 3
// замонтировал для проверки
# mount -a

Перезапуск машинки показал, что автомонтирование работает. Теперь надо сделать автозапуск rtorrent. Весь рецепт утянут отсюда
libtorrent.rakshasa.no StartingrTorrentonSystemStartup
от себя только рабочие конфиги прикладываю

# mv /home/valik/torrent/rtorrentInit.sh /etc/init.d/rtorrent
# chmod 755 /etc/init.d/rtorrent
# chown root:root /etc/init.d/rtorrent
# ls -l /etc/init.d/rtorrent
# nano /etc/init.d/rtorrent
# update-rc.d rtorrent defaults
# sysv-rc-conf
# service rtorrent start

От имени пользователя окно с rtorrent открывается так (в моем случае, я скрин назвал «torr»)

$ screen -d -R torr

Финальный стоп, старт машинки показал работоспособность решения в целом. Полчаса на все-про-все.

nano ~/.rtorrent.rc
# This is an example resource file for rTorrent. Copy to
# ~/.rtorrent.rc and enable/modify the options as needed. Remember to
# uncomment the options you wish to enable.

# Maximum and minimum number of peers to connect to per torrent.
min_peers = 1
max_peers = 100

# Same as above but for seeding completed torrents (-1 = same as downloading)
min_peers_seed = 1
max_peers_seed = 100

# Maximum number of simultanious uploads per torrent.
max_uploads = 50

# Global upload and download rate in KiB. "0" for unlimited.
download_rate = 400
upload_rate = 100

# Default directory to save the downloaded torrents.
directory = /home/valik/torrent/data

# Default session directory. Make sure you don't run multiple instance
# of rtorrent using the same session directory. Perhaps using a
# relative path?
session = /home/valik/torrent/meta

# Watch a directory for new torrents, and stop those that have been
# deleted.
schedule = watch_directory,5,5,load_start=/home/valik/torrent/*.torrent
schedule = untied_directory,5,5,stop_untied=/home/valik/torrent/stopped/*.torrent

# Close torrents when diskspace is low.
schedule = low_diskspace,5,60,close_low_diskspace=100M

# Stop torrents when reaching upload ratio in percent,
# when also reaching total upload in bytes, or when
# reaching final upload ratio in percent.
# example: stop at ratio 2.0 with at least 200 MB uploaded, or else ratio 20.0
#schedule = ratio,60,60,"stop_on_ratio=200,200M,2000"

# The ip address reported to the tracker.
#ip = 127.0.0.1
ip = вашхост.dyndns.org

# The ip address the listening socket and outgoing connections is
# bound to.
bind = 0.0.0.0
#bind = rakshasa.no

# Port range to use for listening.
port_range = 6960-6960

# Start opening ports at a random position within the port range.
#port_random = no

# Check hash for finished torrents. Might be usefull until the bug is
# fixed that causes lack of diskspace not to be properly reported.
check_hash = yes

# Set whetever the client should try to connect to UDP trackers.
use_udp_trackers = no

# Alternative calls to bind and ip that should handle dynamic ip's.
schedule = ip_tick,0,1800,ip=вашхост.dyndns.org
schedule = bind_tick,0,1800,bind=0.0.0.0

# Encryption options, set to none (default) or any combination of the following:
# allow_incoming, try_outgoing, require, require_RC4, enable_retry, prefer_plaintext
#
# The example value allows incoming encrypted connections, starts unencrypted
# outgoing connections but retries with encryption if they fail, preferring
# plaintext to RC4 encryption after the encrypted handshake
#
encryption = allow_incoming,try_outgoing,enable_retry,prefer_plaintext

# Enable DHT support for trackerless torrents or when all trackers are down.
# May be set to "disable" (completely disable DHT), "off" (do not start DHT),
# "auto" (start and stop DHT as needed), or "on" (start DHT immediately).
# The default is "off". For DHT to work, a session directory must be defined.
# 
dht = auto

# UDP port to use for DHT. 
# 
dht_port = 6961

# Enable peer exchange (for torrents not marked private)
#
peer_exchange = yes

#
# Do not modify the following parameters unless you know what you're doing.
#

# Hash read-ahead controls how many MB to request the kernel to read
# ahead. If the value is too low the disk may not be fully utilized,
# while if too high the kernel might not be able to keep the read
# pages in memory thus end up trashing.
#hash_read_ahead = 10

# Interval between attempts to check the hash, in milliseconds.
#hash_interval = 100

# Number of attempts to check the hash while using the mincore status,
# before forcing. Overworked systems might need lower values to get a
# decent hash checking rate.
#hash_max_tries = 10


nano /etc/init.d/rtorrent
#!/bin/sh
#############
######
#############
# This script depends on screen.
# For the stop function to work, you must set an
# explicit session directory using ABSOLUTE paths (no, ~ is not absolute) in your rtorrent.rc.
# If you typically just start rtorrent with just "rtorrent" on the
# command line, all you need to change is the "user" option.
# Attach to the screen session as your user with 
# "screen -dr rtorrent". Change "rtorrent" with srnname option.
# Licensed under the GPLv2 by lostnihilist: lostnihilist _at_ gmail _dot_ com
##############
######
##############

#######################
##Start Configuration##
#######################
# You can specify your configuration in a different file 
# (so that it is saved with upgrades, saved in your home directory,
# or whateve reason you want to)
# by commenting out/deleting the configuration lines and placing them
# in a text file (say /home/user/.rtorrent.init.conf) exactly as you would
# have written them here (you can leave the comments if you desire
# and then uncommenting the following line correcting the path/filename 
# for the one you used. note the space after the ".".
# . /etc/rtorrent.init.conf

#Do not put a space on either side of the equal signs e.g.
# user = user 
# will not work
# system user to run as
user="valik"

# the system group to run as, not implemented, see d_start for beginning implementation
# group=`id -ng "$user"`

# the full path to the filename where you store your rtorrent configuration
config="`su -c 'echo $HOME' $user`/.rtorrent.rc"

# set of options to run with
options=""

# default directory for screen, needs to be an absolute path
base="`su -c 'echo $HOME' $user`"

# name of screen session
srnname="torr"

# file to log to (makes for easier debugging if something goes wrong)
logfile="/var/log/rtorrentInit.log"
#######################
###END CONFIGURATION###
#######################
PATH=/usr/bin:/usr/local/bin:/usr/local/sbin:/sbin:/bin:/usr/sbin
DESC="rtorrent"
NAME=rtorrent
DAEMON=$NAME
SCRIPTNAME=/etc/init.d/$NAME

checkcnfg() {
    exists=0
    for i in `echo "$PATH" | tr ':' '\n'` ; do
        if [ -f $i/$NAME ] ; then
            exists=1
            break
        fi
    done
    if [ $exists -eq 0 ] ; then
        echo "cannot find rtorrent binary in PATH $PATH" | tee -a "$logfile" >&2
        exit 3
    fi
    if ! [ -r "${config}" ] ; then 
        echo "cannot find readable config ${config}. check that it is there and permissions are appropriate" | tee -a "$logfile" >&2
        exit 3 
    fi 
    session=`getsession "$config"` 
    if ! [ -d "${session}" ] ; then
        echo "cannot find readable session directory ${session} from config ${config}. check permissions" | tee -a "$logfile" >&2
        exit 3
    fi
}

d_start() {
  [ -d "${base}" ] && cd "${base}"
  stty stop undef && stty start undef
  su -c "screen -ls | grep -sq "\.${srnname}[[:space:]]" " ${user} || su -c "screen -dm -S ${srnname} 2>&1 1>/dev/null" ${user} | tee -a "$logfile" >&2
  # this works for the screen command, but starting rtorrent below adopts screen session gid
  # even if it is not the screen session we started (e.g. running under an undesirable gid
  #su -c "screen -ls | grep -sq "\.${srnname}[[:space:]]" " ${user} || su -c "sg \"$group\" -c \"screen -fn -dm -S ${srnname} 2>&1 1>/dev/null\"" ${user} | tee -a "$logfile" >&2
  su -c "screen -S "${srnname}" -X screen rtorrent ${options} 2>&1 1>/dev/null" ${user} | tee -a "$logfile" >&2
}

d_stop() {
    session=`getsession "$config"`
    if ! [ -s ${session}/rtorrent.lock ] ; then
        return
    fi
    pid=`cat ${session}/rtorrent.lock | awk -F: '{print($2)}' | sed "s/[^0-9]//g"`
    if ps -A | grep -sq ${pid}.*rtorrent ; then # make sure the pid doesn't belong to another process
        kill -s INT ${pid}
    fi
}

getsession() { 
    session=`cat "$1" | grep "^[[:space:]]*session[[:space:]]*=" | sed "s/^[[:space:]]*session[[:space:]]*=[[:space:]]*//" `
    echo $session
}

checkcnfg

case "$1" in
  start)
    echo -n "Starting $DESC: $NAME"
    d_start
    echo "."
    ;;
  stop)
    echo -n "Stopping $DESC: $NAME"
    d_stop
    echo "."
    ;;
  restart|force-reload)
    echo -n "Restarting $DESC: $NAME"
    d_stop
    sleep 1
    d_start
    echo "."
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
    exit 1
    ;;
esac

exit 0


Рецепты тянул отсюда
whyhomeserver.blogspot.com
libtorrent.rakshasa.no/ StartingrTorrentonSystemStartup


kwords: rtorrent, startup, init.d, init.rc, screen, fstab, automount

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