Messages in this thread | | | Date | Sun, 2 May 2004 15:24:40 +0200 (CEST) | From | Guennadi Liakhovetski <> | Subject | [RFC] Filesystem with multiple mount-points |
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Hi
Disclaimer: I am not a filesystem expert, so, what's below might be absolute nonsense.
There are systems, where it is desirable to make some partitions, possibly, including root, read-only, and some other, like, e.g., /var, /home, /lib/modules read-writable. Those writable filesystems may be quite small, so, putting them on separate partitions creates too much overhead for filesystem metadata, journals... Making those directories soft-links into one writable partition would work, but is not too nice.
So, how about adding a multiple mount-point option to some filesystem? They would share metadata, journals, would be represented by several directory-trees, and be mountable with, e.g.
mount -otree1 /dev/hda1 /var
or
mount /dev/hda1:1 /var
which, however, would be incompatible with older versions. /proc/mounts would show something like
/dev/hda1:1 /var ...
df might just show tree1 - to maintain backwards compatibility. Later mount and df could be tought to support this option natively.
Makes any sense at all?
Thanks Guennadi --- Guennadi Liakhovetski
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