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

  • Subject: Re: [OCLUG-Tech] a compelling application for bind mounts?
  • From: Richard Guy Briggs <rgb [ at ] tricolour [ dot ] net>
  • Date: Thu, 26 Dec 2013 23:16:58 -0500
On 13/12/26, Peter Sj?berg wrote:
> 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
> mounted.

Interesting...  I would normally just use:
	du -hxd1 /|sort -h

> 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.

All good tips coming out in this thread...

> /ps

	slainte mhath, RGB

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