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Date:      Tue, 1 Nov 2011 23:38:09 -0700
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Shivaram Upadhyayula <shivaram.u@quadstor.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ZFS/compression/performance
Message-ID:  <20111102063809.GA50463@icarus.home.lan>
In-Reply-To: <CAN-_Efxv-g3=mzFg-jaq29T=PO0H4vX2NR=5kyBEOem7AxTQCg@mail.gmail.com>
References:  <alpine.BSF.2.00.1110122159410.26591@Elmer.dco.penx.com> <CAN-_EfxVZchM-ByjbtMO2kcjiU_=u7GF5q5_9rz7HHeL09Vn0g@mail.gmail.com> <20111101211710.GA36797@voi.aagh.net> <CAN-_Efxv-g3=mzFg-jaq29T=PO0H4vX2NR=5kyBEOem7AxTQCg@mail.gmail.com>

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On Wed, Nov 02, 2011 at 11:37:49AM +0530, Shivaram Upadhyayula wrote:
> Sorry i didn't know it will be stripped out :-)
> http://www.quadstor.com/ietbsd/compression.tgz LZF diff is against
> FreeBSD8-STABLE checkout about a week ago.

Are you sure about that?

$ egrep '^---' lzffinal.diff
--- cddl/boot/zfs/zfsimpl.h     2011-10-26 14:50:35.000000000 +0530
--- cddl/boot/zfs/zfssubr.c     2011-10-26 14:50:35.000000000 +0530
--- cddl/contrib/opensolaris/common/zfs/zfs_prop.c      2011-10-26 14:50:36.000000000 +0530
--- cddl/contrib/opensolaris/uts/common/Makefile.files  2011-10-27 14:21:41.000000000 +0530
--- cddl/contrib/opensolaris/uts/common/fs/zfs/lzf.c    1970-01-01 05:30:00.000000000 +0530
--- cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h        2011-10-26 14:50:36.000000000 +0530
--- cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h       2011-10-26 14:50:36.000000000 +0530
--- cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c   2011-10-26 14:50:37.000000000 +0530

These pathnames don't reflect reality on FreeBSD RELENG_8.  There are no
such path names, both on our RELENG_8 systems, nor in CVS:

$ ls -l /usr/src/cddl/boot
ls: /usr/src/cddl/boot: No such file or directory

$ ls -l /usr/src/cddl/contrib/opensolaris/uts
ls: /usr/src/cddl/contrib/opensolaris/uts: No such file or directory

$ ls -l /usr/src/cddl/contrib/opensolaris
total 30
-rw-r--r--    1 root      wheel     18924 Mar 28  2008 OPENSOLARIS.LICENSE
drwxr-xr-x   16 root      wheel       512 Jun 23 00:43 cmd/
drwxr-xr-x    4 root      wheel       512 Jun 23 00:43 common/
drwxr-xr-x    2 root      wheel       512 Jun 23 00:43 head/
drwxr-xr-x   10 root      wheel       512 Jun 23 00:43 lib/
drwxr-xr-x    3 root      wheel       512 Jun 23 00:43 tools/

In CVS there used to be a src/cddl/contrib/opensolaris/uts/common directory
but everything in it now is under Attic/, which means it's been
deprecated.  See for yourself:

http://www.freebsd.org/cgi/cvsweb.cgi/src/cddl/contrib/opensolaris/uts/common/

Please advise.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |




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