how to see original and --bind mountpoints

Asked Mar 21 '15 at 15:19

Active Mar 21 '15 at 18:48

Viewed 133 times

Lest say I mount a usb drive to /mnt and next I run this...

mount --bind /mnt /tmp/test.d

It's a successful bind, but now when I run lsblk only the bind point shows.

How can I get all bound and original mount points listed?

When I use findmnt, it shows both, but it doesn't tell me which one is the original mount point. How can I learn this?

edited Mar 21 '15 at 18:48

asked Mar 21 '15 at 15:19

Michael Bruce

1

why not using mount or better findmnt? – taliezin Mar 21 '15 at 16:00
Thats good info. How can I find which is the original mount point? Both show up and have the same information other than mount directory. – Michael Bruce Mar 21 '15 at 16:23
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Yeah, `findmnt -R /path/to/mount/point/dir` will make it very clear w/ defaulys. – mikeserv Mar 21 '15 at 17:08
Using device instead of directory worked for me. findmnt -r /dev/sdb1 this listed all mount and binds :) – Michael Bruce Mar 21 '15 at 17:57
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IIRC this information is not kept anywhere: after `mount --bind`, the two copies are equivalent, there isn't one that's more “original” than the other. After all there could be no original if you'd already unmounted `/mnt`. – Gilles 'SO- stop being evil' Mar 21 '15 at 18:49
Thank you Gilles. You answered my other concern. I was just asking the wrong question :) – Michael Bruce Mar 21 '15 at 19:15

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