Messages in this thread |  | | Date | Tue, 10 Jun 2003 08:53:46 +0100 | From | john@grabjohn ... | Subject | Re: cachefs on linux |
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> Anyway, linux also does not have unionFS. If it was that big of a deal, > someone would write it. As it is, it's a whizbang no one cares about enough.
BSD has had a UnionFS for a while now, by the way.
There are a lot of things we _could_ add to filesystems, E.G.:
* Appending to a read-only filesystem on a separate volume
* File versioning
* Transparent, variable compression
* Format conversion, (I.E. write a png file to a filesystem, and it is automatically visible as half a dozen other formats, without them actually existing on the disk)
* Priorities, (E.G. temp files could have a bit to indicate that we don't really care how long they remain in write-cache, instead of flushing them along with other more-important-to-get-to-the-oxide data)
* WORM mode, (I.E. start at block 1 and use blocks sequentially, never re-using blocks - makes a tape somewhat usable as a block device)
Some of these are available in some form or another already. There is plenty we can do, given enough time :-).
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