mount的问题

telnetp

# mount | grep ssh
/dev/VG_B/state on /etc/ssh/ssh_host_dsa_key type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/ssh_host_dsa_key.pub type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/ssh_host_key type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/ssh_host_key.pub type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/ssh_host_rsa_key type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/ssh_host_rsa_key.pub type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/sshd_external_config type ext3 (rw,noatime,data=ordered)
/dev/VG_B/state on /etc/ssh/sshd_internal_config type ext3 (rw,noatime,data=ordered)

我有两个问题：
1.我的理解是一个设备只能挂载到一个挂载点，但是这里为什么/dev/VG_B/state 能挂载到多个挂载点(/etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_dsa_key.pub, ...)呢？
2. 挂载点应该是一个目录，但是这里为什么全是文件呢(如/etc/ssh/ssh_host_dsa_key是一个文件)？

chenyx

没见过你的那种现象
mount是可以将一个设备挂载到多个挂载点的,用--bind