我刚刚从 Ubuntu 12.04 升级到 12.10。在此之前，我备份了我的 autofs 配置，效果很好。我将旧行添加/etc/auto.master到新行：
+dir:/etc/auto.master.d
+auto.master
/mnt /etc/auto.sshfs uid=1000,gid=1000,--timeout=30,--ghost,--verbose
我的/etc/auto.sshfs样子是这样的：
mymount -fstype=fuse,rw,nodev,nonempty,noatime,allow_other,max_read=65536 :sshfs\#myuser@mydomain:/mnt/mymount
我手动尝试了这个Connetion reset by peer，所以我添加了选项IdentityFile=/home/myuser/.ssh/id_rsa。现在，当我尝试访问/mnt（使用手动和 autofs）时会发生这种情况：
myuser@laptop /mnt % la
ls: cannot access mymount: No such file or directory
total 4
drwxr-xr-x 3 root root 0 Oct 19 10:34 ./
drwxr-xr-x 25 root root 4096 Oct 18 23:17 ../
d????????? ? ? ? ? ? mymount/
我的相关条目/var/log/syslog是这样的：
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: lookup(program): lookup for mymount failed
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: attempting to mount entry /mnt/mymount
Oct 19 00:17:56 laptop automount[1250]: failed to mount /mnt/mymount
Oct 19 00:18:01 laptop automount[1250]: attempting to mount entry /mnt/.hidden
Oct 19 00:18:01 laptop automount[1250]: lookup(program): lookup for .hidden failed
Oct 19 00:18:01 laptop automount[1250]: failed to mount /mnt/.hidden
Oct 19 00:18:03 laptop automount[1250]: attempting to mount entry /mnt/.hidden
Oct 19 00:18:03 laptop automount[1250]: failed to mount /mnt/.hidden
Oct 19 00:18:03 laptop automount[1250]: attempting to mount entry /mnt/.hidden
Oct 19 00:18:03 laptop automount[1250]: failed to mount /mnt/.hidden
Oct 19 00:18:24 laptop automount[1250]: attempting to mount entry /mnt/.hidden
Oct 19 00:18:24 laptop automount[1250]: failed to mount /mnt/.hidden
Oct 19 00:21:57 laptop automount[1250]: umount_autofs_indirect: ask umount returned busy /mnt
Oct 19 00:21:59 laptop automount[1250]: shut down path /mnt
Oct 19 00:21:59 laptop automount[3436]: mounted indirect on /mnt with timeout 30, freq 8 seconds
Oct 19 00:21:59 laptop automount[3436]: ghosting enabled
我已经检查了 UID 和 GID，它们与我的用户匹配。我的用户的 SSH 密钥已就位。我也尝试手动创建/mnt/mymount，但奇怪的是，只要 autofs 正在运行，它就会返回“权限被拒绝”（我猜应该是这样）。
有什么想法可能是错的吗？必须有一个我忘记之前做过的配置步骤。
答案1
您是否尝试过使用调试选项运行 autofs？
sudo automount --debug -f /etc/auto.master将为您提供运行终端的调试输出。
您是否将root 和您的用户添加到fuse 组中？
sudo gpasswd -a $USER fuse
答案2
有一些陷阱可能会导致您遇到问题。截至此答案时，您已经解决了其中一个问题，但我将解决所有问题（您当前的问题是由 #3 引起的）。
1 - 身份文件
这就是你解决的问题。sshfs从 autofs 挂载运行时，sshfs以 root 用户身份运行，因此默认情况下使用 root 的 ssh 密钥。您必须指定IdentityFile=/home/user/.ssh/id_rsa使用不同的密钥。
2 - 已知主机
另外，由于您以不同于平常的用户身份运行sshfs，因此必须确保要安装的远程主机位于文件中known_hosts。有几种方法可以解决这个问题。
- 以 root 身份 ssh 到远程主机一次并接受远程主机的密钥。
- 添加参数
StrictHostKeyChecking=no。这将使 ssh 接受它看到的任何密钥（因此引入了一些不安全性）。 - 添加参数
UserKnownHostsFile=/home/user/.ssh/known_hosts。这将使其使用known_hosts普通用户的文件。
3 - 保险丝allow_other
默认情况下，fuse 文件系统（即 sshfs）不允许除挂载该文件系统的用户之外的用户访问它。由于 autofs 以 root 身份运行，因此默认情况下只有 root 可以访问它。其他任何人都不会拥有权限（即使是由非 root 用户安装的 root 权限），即使实际的文件权限表明他们应该能够拥有权限。要解决这个问题，您必须添加 mount 选项allow_other。这将允许安装它的用户以外的用户访问该安装。但访问仍将遵循挂载上文件的文件级权限。