Cachefs

Deepak Tony Thomas (DTTHOMAS.IN.oracle.com.ofcmail@in.oracle.com)
16 Mar 99 19:26:32 +0330

Is Cachefs (Solaris has this) available on Linux ?!!

As far as I know cachefs on Solaris works only for CD-ROM mounts and NFS.
How useful would it be to extend this as a generic feature from the VFS layer
itself ?!
What I mean is, one could mount any filesystem type with the Cache flag turned
on, and this behaves as a cachesf, i.e copies happen on a copy-on-write basis.

One another thing - if I had a CD-ROM, I could mount that as a Cachefs with
write permissions, whereas actually any writes would only create copies in the
file-cache. Wouldn't it be pretty useful if I had a CD already cut and now I
need this one file on the CD to be changed for some reason. Atleast to
user-level programs it would appear that the file was modified on the CD -
quite useful when you want to modify a large source base on a CD, but don't
want to copy the entire stuff on to your hard-disk.

Any comments ?

Thanks
Deepak

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/