Messages in this thread | | | Date | Wed, 30 Oct 2002 16:42:39 +0100 | From | Denis RICHARD <> | Subject | Re: ANNOUNCEMENT: Squashfs released (a highly compressed filesystem) |
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Padraig Brady wrote:
> Jesse Pollard wrote: > >> On Tuesday 29 October 2002 10:11 pm, Larry McVoy wrote: >> >>>> A r/w compressed filesystem would be darned useful too :) >>> >>> >>> mmap(2) is, err, hard. Not impossible, it means the file system has to >>> support both compressed and uncompressed files, but it's interesting. >> >> >> You can also think of it as a step toward a hierarchical filesystem >> with the >> files: >> 1. uncompressed (with uncompressed inode) >> 2. compressed on line (real disk space allocated) >> 3. compressed nearline (only compressed inode on disk, with a >> reference to offline storage) >> >> Obviously this is only for very large filesystems (we have one FS that >> is currently between 100-200 TB in size when you include the migrated >> storage). > > > I think it's worth referencing e2compr here also, > which is a patch that provides transparent compression > for ext2 (& ext3?). Denis RICHARD (CC'd) is maintaining > the 2.4 implementation. I've version 0.4.42 (against > 2.4.16) mirrored here: > http://www.iol.ie/~padraiga/patches/e2compr-0.4.42-patch-2.4.16.gz
A new version of the patch (0.4.43) is available here : http://www.alizt.com But I have not tested the patch on ext3.
> > > Note I've used it without problems (to access filesystems > created with the kernel 2.2 version) here: > http://cvs.bofh.asn.au/e2compr/ > > Pádraig. > > -- -----------------------------\--------------------------\ Denis RICHARD \ ALCATEL Business Systems \ mailto:dri@sxb.bsf.alcatel.fr / Tel: +33(0)3 90 67 69 36 / -----------------------------/--------------------------/
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