使用NAS盒作为24/7文件服务器,我想使用sshfs从Ubuntu 9.04桌面连接到它.目前,我在桌面的fstab中有这一行：
sshfs#jldugger@storage:/mnt/HD_a2/ /mnt/storage fuse comment=sshfs,auto,users,exec,uid=1000,gid=1000,allow_other,reconnect,transform_symlinks,BatchMode=yes,fsname=sshfs#jldugger@storage/mnt/HD_a2/ 0 0
我可以确认它适用于mount / mnt / storage.我需要的是在启动时安装它的一些方法,但是在建立网络连接之后.
目前,Ubuntu中的Upstart不会生成网络事件.相反,它调用传统的sysvinit.默认情况下,NetworkManager已安装并正在运行;它包含一个运行部件调度程序(/etc/NetworkManager/dispatcher.d/),它本身只依赖于ifupdown的运行部件调度程序(/etc/network/*.d/),而不是将网络事件发送到upstart.特别是你关心/etc/network/if-up.d/和/etc/network/if-down.d/
首先设置一个未加密的ssh密钥对,这样你就可以在没有提示的情况下挂载这个点.编写脚本,将其放在/etc/network/if-up.d/中并生成可执行文件.在UbuntuForums上发现了以下内容,对我来说足够了：
#!/bin/sh ## http://ubuntuforums.org/showthread.PHP?t=430312 ## The script will attempt to mount any fstab entry with an option ## "...,comment=$SELECTED_STRING,..." ## Use this to select specific sshfs mounts rather than all of them. SELECTED_STRING="sshfs" # Not for loopback [ "$IFACE" != "lo" ] || exit 0 ## define a number of useful functions ## returns true if input contains nothing but the digits 0-9,false otherwise ## so realy,more like isa_positive_integer isa_number () { ! echo $1 | egrep -q '[^0-9]' return $? } ## returns true if the given uid or username is that of the current user am_i () { [ "$1" = "`id -u`" ] || [ "$1" = "`id -un`" ] } ## takes a username or uid and finds it in /etc/passwd ## echoes the name and returns true on success ## echoes nothing and returns false on failure user_from_uid () { if isa_number "$1" then # look for the corresponding name in /etc/passwd local IFS=":" while read name x uid the_rest do if [ "$1" = "$uid" ] then echo "$name" return 0 fi done </etc/passwd else # look for the username in /etc/passwd if grep -q "^${1}:" /etc/passwd then echo "$1" return 0 fi fi # if nothing was found,return false return 1 } ## Parses a string of comma-separated fstab options and finds out the ## username/uid assigned within them. ## echoes the found username/uid and returns true if found ## echoes "root" and returns false if none found uid_from_fs_opts () { local uid=`echo $1 | egrep -o 'uid=[^,]+'` if [ -z "$uid" ]; then # no uid was specified,so default is root echo "root" return 1 else # delete the "uid=" at the beginning uid_length=`expr length $uid - 3` uid=`expr substr $uid 5 $uid_length` echo $uid return 0 fi } # unmount all shares first sh "/etc/network/if-down.d/umountsshfs" while read fs mp type opts dump pass extra do # check validity of line if [ -z "$pass" -o -n "$extra" -o "`expr substr ${fs}x 1 1`" = "#" ]; then # line is invalid or a comment,so skip it continue # check if the line is a selected line elif echo $opts | grep -q "comment=$SELECTED_STRING"; then # get the uid of the mount mp_uid=`uid_from_fs_opts $opts` if am_i "$mp_uid"; then # current user owns the mount,so mount it normally { sh -c "mount $mp" && echo "$mp mounted as current user (`id -un`)" || echo "$mp Failed to mount as current user (`id -un`)"; } & elif am_i root; then # running as root,so sudo mount as user if isa_number "$mp_uid"; then # sudo wants a "#" sign icon front of a numeric uid mp_uid="#$mp_uid" fi { sudo -u "$mp_uid" sh -c "mount $mp" && echo "$mp mounted as $mp_uid" || echo "$mp Failed to mount as $mp_uid"; } & else # otherwise,don't try to mount another user's mount point echo "Not attempting to mount $mp as other user $mp_uid" : echo "Not attempting to mount $mp as other user $mp_uid" fi fi # if not an sshfs line,do nothing done </etc/fstab wait
如果您有wifi或其他不可靠的连接,请将以下内容放在/etc/network/if-down.d/中：
#!/bin/bash # Not for loopback! [ "$IFACE" != "lo" ] || exit 0 # comment this for testing exec 1>/dev/null # squelch output for non-interactive # umount all sshfs mounts mounted=`grep 'fuse.sshfs\|sshfs#' /etc/mtab | awk '{ print $2 }'` [ -n "$mounted" ] && { for mount in $mounted; do umount -l $mount; done; }
