home | list info | list archive | date index | thread index

Re: [OCLUG-Tech] a compelling application for bind mounts?

  • Subject: Re: [OCLUG-Tech] a compelling application for bind mounts?
  • From: "Peter Sjöberg" <lpaseen [ at ] gmail [ dot ] com>
  • Date: Thu, 26 Dec 2013 22:52:37 -0500
On 12/26/2013 01:11 PM, Robert P. J. Day wrote:
> On Thu, 26 Dec 2013, Bart Trojanowski wrote:
>> Similar to chroots, I use bind mounts for containers. This is useful
>> to give all containers access to the same /home or for distributing
>> /etc/resolv.conf. The latter is actually a very cool use case of
>> bind mounts... you can bind a file, not just a directory.
>   yes, i was playing with that very feature earlier this morning. it's
> not that there's a lack of info on bind mounts; rather, there's a lack
> of really good *examples* of its use.

Besides what other already said I commonly use it to find out why / (or
any other fs with multiple fs mounted on top) is filled up
  mount --bind / /mnt/root
  du -sh /mnt/root/*|sort -h
since then all the mounted fs won't get included and it even catch if
someone manage to fill up /dev, /proc, /sys or /tmp before it's properly

Another use is when I booted a cd in rescue mode and the real fs is
mounted under /mnt. "chroot /mnt" kind of works but you have to mount
/proc, /sys & /dev properly and for that I normally use bind
  mount --bind /dev /mnt/dev
and so on, and no issues to cleanly umount it later.


Attachment: signature.asc
Description: OpenPGP digital signature