On 04/04/2014 06:14 AM, Tom H wrote:
On Fri, Apr 4, 2014 at 7:10 AM, David Sommerseth
sl+us...@lists.topphemmelig.net wrote:
Bind mounts are special. It basically mounts an already mounted
directory yet another place. Say you have this scheme:
/dev/sda4 - /mnt/mydata
/dev/sdb2 - /mnt/friendsdata
If you add a 'friends' directory in /mnt/mydata ... giving you
/mnt/mydata/friends, and the do bind mount:
mount -o bind /mnt/friendsdata /mnt/mydata/friends
This results in that you have access to the same data in both
/mnt/friendsdata and /mnt/mydata/friends ... But all data is read and
written from/to /dev/sdb2. It's just that you have loaned an already
mounted directory into your /mnt/mydata directory.
These bind mounts are kind of a I want what you have-mount.
Bind mounts are particularly handy when you work with chroots and wants
to grant access to certain files outside the chroot, where symlink is
impossible. With bind mounts, you can also the same with files; not
just directories.
For the sake of completeness - and also in anticipation of SL7's
symlinking of /etc/mtab to /proc/self/mounts:
http://karelzak.blogspot.ch/2011/04/bind-mounts-mtab-and-read-only.html
Hi Tom and David,
Thank you!
-T
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