From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1OEqX7-0006px-V6 for mharc-grub-devel@gnu.org; Wed, 19 May 2010 17:10:30 -0400 Received: from [140.186.70.92] (port=58131 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OEqX5-0006o0-CP for grub-devel@gnu.org; Wed, 19 May 2010 17:10:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OEqX3-0006Uu-Ce for grub-devel@gnu.org; Wed, 19 May 2010 17:10:27 -0400 Received: from mail-wy0-f169.google.com ([74.125.82.169]:42024) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OEqX3-0006Uq-8J for grub-devel@gnu.org; Wed, 19 May 2010 17:10:25 -0400 Received: by wyb33 with SMTP id 33so94593wyb.0 for ; Wed, 19 May 2010 14:10:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :x-enigmail-version:content-type; bh=x5Pwnr8eZgXMrZ1izVtxHNQ3bXEwxp86jGhs7sL+/n4=; b=jpZ8vvX/SyJsIof9ZmsAo1cMGLP9KZhnzx6Iqt2yI8zlIXbPVsKPTvOPlzG0n7Wvr8 cxSnGVWSmqxDdYUJTDmraIW5Xkk/sS6ppI9JwiKGWtWBHVm9dM1UfH+NY5+ZiUhhdJHQ iocApKYtSL/4p8VFBGPRTz0fxmnzsWsemio+w= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:x-enigmail-version:content-type; b=bZw/Qja7EoImdfIzx96dMEioliDcuAvuEeQnF+DM6l7p/qv88VNhcNAYjvRbyuaAkb n3yqfdyCbElQefukspXmt36kVvbSygs80YzzAZqZFhUMPUpZUPAXS3UClG7guep0Yfpv PU5enoIcX1YBzVvVAvE5jIYUSkp6TdXXyqojE= Received: by 10.227.137.67 with SMTP id v3mr8453296wbt.92.1274303424245; Wed, 19 May 2010 14:10:24 -0700 (PDT) Received: from debian.bg45.phnet (gprs35.swisscom-mobile.ch [193.247.250.35]) by mx.google.com with ESMTPS id i34sm21075689gve.9.2010.05.19.14.10.20 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 19 May 2010 14:10:23 -0700 (PDT) Message-ID: <4BF453B0.4000003@gmail.com> Date: Wed, 19 May 2010 23:10:08 +0200 From: =?UTF-8?B?VmxhZGltaXIgJ8+GLWNvZGVyL3BoY29kZXInIFNlcmJpbmVua28=?= User-Agent: Mozilla-Thunderbird 2.0.0.22 (X11/20091109) MIME-Version: 1.0 To: The development of GNU GRUB References: <4BF43084.9060702@isaac.cedarswampstudios.org> <106227877626403@192.168.2.69> In-Reply-To: <106227877626403@192.168.2.69> X-Enigmail-Version: 0.95.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enig1B11097A514855B1AF1DCCCD" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) Subject: Re: Migrations to xorriso X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 May 2010 21:10:28 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig1B11097A514855B1AF1DCCCD Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thomas Schmitt wrote: > Hi, > > Isaac Dupree wrote: > =20 >> What size range are the whole images?=20 >> =20 > > The minimum output of grub-mkrescue 1.98 with > xorriso is 1544192 bytes. > grub-mkisofs: 1550336 > genisoimage: 1859584 (-307200 with -no-pad) > > One may add lots of other files, of course. > > > =20 >> Also I guess no one compresses whole ISOs >> =20 > > It makes few sense to compress the ISO as a > whole. But one could compress some files in it. > > One could implement a reader for H. Peter Anvin's > zisofs format in GRUB's ISO 9660 reader - if not > present already. > zisofs is a transparent content compression of > single files. A reader is implemented in the > Linux kernel. See macro CONFIG_ZISOFS in > fs/isofs/*.[ch]. > An authorised description is given in > doc/zisofs_format.txt of xorriso resp. in > http://bazaar.launchpad.net/~libburnia-team/libisofs/scdbackup/annota= te/head:/doc/zisofs_format.txt > The ISO 9660 directory tree stays uncompressed. > Compressed and uncompressed files can be mixed. > > xorriso can produce zisofs compressed data files > on the fly (needs zlib). > A grub-mkrescue 1.98 image with all files > compressed has 884736 bytes. But one would have > to leave those files uncompressed which are > needed for reading ISO 9660 and zisofs > compression. > > =20 I'm not sure that zisofs is useful for grub. We already have support for =2Egz files. xz support is coming. Compressing explicitly we would avoid to accidently compressing files we need uncompressed. Also we're more fs-independent. Implementing zisofs reader may have some value but isn't a priority. > Have a nice day :) > > Thomas > =20 > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel > > =20 --=20 Regards Vladimir '=CF=86-coder/phcoder' Serbinenko --------------enig1B11097A514855B1AF1DCCCD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iF4EAREKAAYFAkv0U7YACgkQNak7dOguQgnHCAEAmvMLsZHY9FY4T2E2OE7EMMjy Szia2MiQyL+GRuliopkA/1SHHiFNMEwTG0wUDnzpdpBhMBhROlt2yYLSby0hViyi =1RlT -----END PGP SIGNATURE----- --------------enig1B11097A514855B1AF1DCCCD--