Hi,
On Thu, 14 Jun 2007, Roger Leigh wrote:
> Regarding your other mail, we could indeed check whether the directory
> is mounted before mounting. However, I'm not sure we can assume that
> the user doesn't want a filesystem mounting over the top of another
> (we don't know if they are the same or not). This would be possible
> for real filesystems where we can stat the block device and mountpoint
> and compare the block-major and -minor numbers. However, for procfs,
> devpts, tmpfs et. al., this is not really possible AFAICT--the device
> numbers are not easily accessible or can vary. Do you have any
> thoughts here?
Another solution (that looks cleaner) is to use "mount --bind" rather
than "mount --rbind". That way, you don't keep the sub-mounts.
Extract from the mount man page:
----
Since Linux 2.4.0 it is possible to remount part of the file hierarchy
somewhere else. The call is
mount --bind olddir newdir
After this call the same contents is accessible in two places. One can
also remount a single file (on a single file).
This call attaches only (part of) a single filesystem, not possible
submounts. The entire file hierarchy including submounts is attached a
second place using
mount --rbind olddir newdir
-----
Currently you're using --rbind for "directory". You should probably use --rbind
for plain and --bind for directory.
Cheers,
--
Raphaël Hertzog
Premier livre français sur Debian GNU/Linux :
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