If I recall, SquashFS is a READONLY filesystem. Because of this it has higher compression ratios than filesystems like jffs2, which are also compressed, but support READ/WRITE operations.
-Brian On Nov 12, 2007 7:59 PM, Roland Mainz <[EMAIL PROTECTED]> wrote: > Nigel Smith wrote: > [snip] > > In the Belenix Live-CD system they use a 'lofi' driver for compression of > > the file system: > > http://www.opensolaris.org/os/project/loficc > > http://www.genunix.org/distributions/belenix_site/?q=compression > > Are you familiar with the lofi driver and can you compare what it does > > with what the SquashFS would do? > > AFIAK "lofi" operates on the block device level while "SquashFS" does > the stuff on the filesystem level... > ... maybe I'm wrong... but my feeling says that "SquashFS" has better > options for optimisations, e.g. compress rarely used stuff with a high > compression level (requiring more CPU time) and the often used stuff > with a lower level... or a global block-sort system to put similar > blocks together to obtain better compression leveles etc. ... > ... and "SquashFS" would not require an extra filesystem, e.g. it > replaces both "ufs" and "lofi" in a smaller, more compact kernel module. > > ---- > > Bye, > Roland > > -- > __ . . __ > (o.\ \/ /.o) [EMAIL PROTECTED] > \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer > /O /==\ O\ TEL +49 641 7950090 > (;O/ \/ \O;) > _______________________________________________ > storage-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/storage-discuss > -- - Brian Gupta http://opensolaris.org/os/project/nycosug/ _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
