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Re: New option for ln, firmlinks!

From: Andreas Schwab
Subject: Re: New option for ln, firmlinks!
Date: Sat, 24 Jan 2004 22:16:12 +0100
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3.50 (gnu/linux)

"Alfred M. Szmidt" <ams@kemisten.nu> writes:

>    I don't know much about union file-systems, but AFAIK they are
>    different from bind mounts.  A bind mount is created by "mount -o
>    bind /foo /bar" and causes the tree under /foo to be overlayed over
>    /bar, with the former contents of /bar being hidden.  It's like a
>    regular mount, except that the source is not (a filesystem on) a
>    block device, but a directory.
> It does sound a bit similar to firmlinks.  But firmlinks work on any
> kind of type of file (directories, symlinks, ...).  I don't know if
> this bind file-system can be used across chroots, but firmlinks can.

You can also bind-mount a regular file (and probably other types, I didn't
try yet).  The only difference to firmlinks is, at it seems, that the
destination must already exist and it must be of the same type as the


Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
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