Package: mount Version: 2.13.1.1-1 Followup-For: Bug #441375 Hello, as described in an LWN article[1], the read-only bind mounts works, BUT one should mount the share as RW, then turn it in RO mode : $mount /foo /bar $mount /bar -o remount,ro $touch /bar/test touch: cannot touch `/bar/test': Read-only file system
I've attached a patch for the manpage regarding r/o bind mounts. [1] http://lwn.net/Articles/281157/ -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages mount depends on: ii libblkid1 1.41.2-1 block device id library ii libc6 2.7-14 GNU C Library: Shared libraries ii libselinux1 2.0.65-5 SELinux shared libraries ii libuuid1 1.41.2-1 universally unique id library mount recommends no packages. Versions of packages mount suggests: ii nfs-common 1:1.1.2-6 NFS support files common to client -- no debconf information
--- mount/mount.8-orig 2008-10-19 13:49:21.000000000 +0200 +++ mount/mount.8 2008-10-19 14:24:09.000000000 +0200 @@ -120,9 +120,16 @@ .RE .\" available since Linux 2.4.11. -Note that the filesystem mount options will remain the same as those -on the original mount point, and cannot be changed by passing the -o -option along with --bind/--rbind. +Note that the filesystem mount options are the same as those on the +original mount point, and cannot be changed by passing the -o +option along with --bind/--rbind. Since 2.6.24, it is possible to +remount a bind as readonly using the following command (Note that +you can't mount -o ro in the first place, see bug #441375) +.RS +.br +.B "mount newdir --o remount,ro" +.RE + Since Linux 2.5.1 it is possible to atomically move a mounted tree to another place. The call is
