Link two filesystems to one directory

Is it possible to link two filesystems to one directory. For example, if
one file system is 1 GB and another file system is 2.5 GB, is it
possible to pont both file systems to one directory, which would have a
capacity of 2.5 GB.

ronandersen@hotmail.com
ronandersenAsked:
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cemaylorCommented:
This answer may vary depending on the Unix you are using, however in general it is not possible to link filesystems to each other in such a way that the space is cumulative.

You could link two filesystems to two separate directories in a tree structure, similar to this example:

filesystem1 = /dev/fsmount1, mounted as /u2
filesystem2 = /dev/fsmount2, mounted as /u3

You could then do this:

ln /u2 /usr/foo/name1
ln /u3 /usr/foo/name2

This puts the filesystems in the same area, however it does NOT give you cumulative space.

Some Unix's, like DG/UX, will allow you to add additional drives and have the space added to existing file systems.

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ronandersenAuthor Commented:
Thank you Cemaylor!
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Unix OS

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