On 03/31/2017 11:19 AM, Karel Zak wrote:
On Fri, Mar 31, 2017 at 11:00:24AM +0200, Rüdiger Meier wrote:
$ truncate -s100M /tmp/img
$ losetup /dev/loop0 /tmp/img
$ mkfs.ext2 /dev/loop0
$ mkdir /tmp/mnt
$ ln -s /tmp /tmp/xyz/symlink
$ mount /dev/loop0 /tmp/xyz/symlink/mnt
$ mount | grep loop
/dev/loop0 on /tmp/mnt type ext2 ...
I need a command which outputs "/dev/loop0" when "/tmp/xyz/symlink/mnt" is
given.
$ findmnt -no SOURCE /tmp/xyz/symlink/mnt
/dev/loop0
Thank's. Now I remember that you have told me that already one day. :)
Note that for bind mounts there is nothing like primary (original)
and secondary mountpoints. It's two ways to the same filesystem.
Yep in this case the problem was only duplicate mountpoints when you
mount something on a subdir a shared bind mount. I'll send a petch for
one libmount test. I really hate that systemd defaults to shared ...
cu,
Rudi
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