> I''d much rather have just one compression scheme per FS. If
people need
> a specific compression scheme for a specific file, they can just
> compress it in userland.
yes, i also think one compression scheme per FS is absolutely sufficient.
> -----Ursprüngliche Nachricht-----
> Von: "Chris Mason" <chris.mason@oracle.com>
> Gesendet: 16.12.08 16:26:28
> An: Lee Trager <lt73@cs.drexel.edu>
> CC: linux-btrfs@vger.kernel.org
> Betreff: Re: Compressed Filesystem
> On Tue, 2008-12-16 at 10:20 -0500, Lee Trager wrote:
> > While I agree that the command you send should be possible it
wasn''t
> > exactly what I was thinking. Currently I am working on a way for the
> > user to individually set which files/directories they want compressed
or
> > not. What I was saying is that assuming you are in a mounted btrfs
> > directory you could do something like
> >
> > chattr -R +c zlib dir1 Compress dir1 and all its contents with zlib
> > chattr -R +c bzip dir2 Compress dir2 and all its contents with bzip
> > chattr +c lzo file1 Compress fil1 with lzo
> > chattr -c file2 Uncompress file2
> > chattr +c none dir3 Uncompress dir3 but leave contents as is
> >
> > If the user did something like
> > mount -o compress,cscheme=zlib /dev/xyz /mntpoint
> > and then
> > chattr +c /mntpoint/dir
> > /mntpoint/dir would default to zlib as would anything else written to
> > the disk.
> >
>
> This is one of those places where more options isn''t always
better.
> Every option adds complexity to the filesystem and the testing matrix.
>
> I''d much rather have just one compression scheme per FS. If
people need
> a specific compression scheme for a specific file, they can just
> compress it in userland.
>
> -chris
>
>
>
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