Re: [debian-knoppix] remastering: problems with create_compressed_fs
I've always used ext3, either scsi or ide.
I just did a proof-of-concept thingy:
Boot 2003-06-06
Mount my scsi hd
copy everything over: 'cp -Rp /KNOPPIX/* /mnt/sda1/Source/'
unmount and reboot
chroot into /mnt/sda1/Source once booted into Slackware(ide drice)
echo "<REMOVED> >> /etc/passwd"
echo "<REMOVED> >> /etc/shadow"
echo "<REMOVED> >> /etc/group"
echo "/etc/init.d/ssh start" > /etc/init.d/rc.local
echo "ifconfig -a | mail <my_email_address>" >> /etc/init.d/rc.local
chmod +x /etc/init.d/rc.local
update-rc.d rclocal start 99 2 3 4 5 .
sync
Exit the chroot.
Then I did the script I posted earlier:
> > > > #!/bin/bash
> > > > rm /KNOPPIX/New-Master/KNOPPIX/KNOPPIX
> > > > mkisofs -R /KNOPPIX/New-Source | create_compressed_fs - 65536
>
> > > > /KNOPPIX/New-Master/KNOPPIX/KNOPPIX
> > > > mkisofs -r -J -b KNOPPIX/boot.img -c KNOPPIX/boot.cat -o
> > > > /mnt/windows/new.iso /KNOPPIX/New-Master
> > > > echo "Done"
Rebooted to windows, burnt my cd, and all was well. The left the cd booting
as I went and grabbed a coffee. While drinking it my cell buzz's to inform
me of the box's IP address.
- Isabella
----- Original Message -----
From: "Simon Friedberger" <knoppix@friedberger.de>
To: "Jeremy Cohoe" <jeremy@illuminatedtechnologies.com>
Sent: Tuesday, July 01, 2003 11:38 AM
Subject: Re: [debian-knoppix] remastering: problems with
create_compressed_fs
>
> isabella or jeremy maybe you could send me the options of your filesystem
> ext2 or 3? blocksize? i m not sure but it might have sth to do with it...
>
>
> On Mon, 30 Jun 2003 17:34:08 -0700 (PDT)
> Jeremy Cohoe <jeremy@illuminatedtechnologies.com> wrote:
>
> >
> > The way that I did it was just 'cp -Rp /KNOPPIX/* /mnt/sda1/Source/
> >
> > - J
> >
> > On Tue, 1 Jul 2003, Simon Friedberger wrote:
> >
> > >
> > > Hi Isabella
> > > Would be nice to know how you decompressed the image and copied the
source, too. I am still not sure if the problem actually is the compression
> > > Thanks
> > > Simon
> > >
> > >
> > >
> > > On Mon, 30 Jun 2003 17:17:30 -0700
> > > "Isabella" <isabella@fatport.ca> wrote:
> > >
> > > > This is the Knoppix script I use to create the iso:
> > > >
> > > > #!/bin/bash
> > > > rm /KNOPPIX/New-Master/KNOPPIX/KNOPPIX
> > > > mkisofs -R /KNOPPIX/New-Source | create_compressed_fs - 65536
>
> > > > /KNOPPIX/New-Master/KNOPPIX/KNOPPIX
> > > > mkisofs -r -J -b KNOPPIX/boot.img -c KNOPPIX/boot.cat -o
> > > > /mnt/windows/new.iso /KNOPPIX/New-Master
> > > > echo "Done"
> > > >
> > > > The only time I have had problems with iso images being too large
was when I
> > > > forgot to delete stuff I had copied over. I have done a bunch of
custom
> > > > builds where the only thing I did was create 3 text files in
/etc/init.d/,
> > > > and the re-compressed iso fit onto a 700meg CD. PEBKAC.
> > > >
> > > >
> > > > -Isabella
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Simon Friedberger" <knoppix@friedberger.de>
> > > > To: <debian-knoppix@linuxtag.org>
> > > > Sent: Monday, June 30, 2003 5:07 PM
> > > > Subject: Re: [debian-knoppix] remastering: problems with
> > > > create_compressed_fs
> > > >
> > > >
> > > > >
> > > > >
> > > > > Actually i did exactly the same but with mounting with cloop and
guess
> > > > what? my file had 733....bytes ...? ok so we agree there is some
overhead?
> > > > but how can i get rid of it? ;)
> > > > > smaller block size?
> > > > >
> > > > > good night
> > > > > Simon
> > > > >
> > > > >
> > > > > --
> > > > > On Mon, 30 Jun 2003 15:38:39 -0700
> > > > > Jared Rhine <jared@wordzoo.com> wrote:
> > > > >
> > > > > > [Klaus == knopper@linuxtag.org on Sun, 29 Jun 2003 23:09:03
+0200]
> > > > > >
> > > > > > >> i decompressed the KNOPPIX cloop fs and compressed it again
...and
> > > > > > >> it had grown about 10mb
> > > > > >
> > > > > > Klaus> Watch out for hardlinks! This could be the reason.
> > > > > >
> > > > > > It could also be that compression is not perfectly symmetric;
that
> > > > > > uncompressing and recompressing again produces a slightly larger
file.
> > > > > > There's some evidence for this, shown below. Doing an
uncompress
> > > > > > followed immediately by a compress expands the KNOPPIX file from
> > > > > > 725,032,363 bytes to 727,812,929 bytes. This probably doesn't
happen
> > > > > > when mounting using cloop loopback.
> > > > > >
> > > > > > -- begin --
> > > > > >
> > > > > > -> cd /mnt/d4/test
> > > > > >
> > > > > > -> ls -l
> > > > > > total 716836
> > > > > > -rw-r--r-- 1 jared jared 733317120 Jun 30 03:48
> > > > knoppix_v3.2-2003-06-06-en.iso
> > > > > >
> > > > > > -> sudo mount -t iso9660 -o loop knoppix_v3.2-2003-06-06-en.iso
> > > > /mnt/test
> > > > > >
> > > > > > -> ls -l /mnt/test/KNOPPIX/KNOPPIX
> > > > > > -r--r--r-- 1 root root 725032363 Jun 6 09:06
> > > > /mnt/test/KNOPPIX/KNOPPIX
> > > > > >
> > > > > > -> extract_compressed_fs /mnt/test/KNOPPIX/KNOPPIX >
> > > > /mnt/d4/test/extracted
> > > > > > 29239 blocks of size 65536. Preamble:
> > > > > > #!/bin/sh
> > > > > > insmod cloop.o file=$0 && mount -r -t iso9660 /dev/cloop $1
> > > > > > exit $?
> > > > > >
> > > > > > Block 0 length 11945 => 65536
> > > > > > Block 1 length 30324 => 65536
> > > > > > Block 2 length 30546 => 65536
> > > > > > Block 3 length 29327 => 65536
> > > > > > Block head:78DAECBD877F1CD5
> > > > > > Block tail:61CF0E315D18D948
> > > > > > Block 4 length 34020 => 65536
> > > > > > Block 5 length 18788 => 65536
> > > > > > Block 6 length 9368 => 65536
> > > > > > [...]
> > > > > >
> > > > > > -> ls -l .
> > > > > > total 2589964
> > > > > > -rw-r--r-- 1 jared jared 1916207104 Jun 30 04:13
extracted
> > > > > > -rw-r--r-- 1 jared jared 733317120 Jun 30 03:48
> > > > knoppix_v3.2-2003-06-06-en.iso
> > > > > >
> > > > > > -> cat extracted | create_compressed_fs - 65536 > recompressed
> > > > > > Block# 0 size 65536 -> 11963 [compression ratio 18%,
overall:
> > > > 18%]
> > > > > > Block# 1 size 65536 -> 30321 [compression ratio 46%,
overall:
> > > > 32%]
> > > > > > Block# 2 size 65536 -> 30545 [compression ratio 46%,
overall:
> > > > 37%]
> > > > > > [...]
> > > > > >
> > > > > > -> ls -l /mnt/test/KNOPPIX/KNOPPIX /mnt/d4/test
> > > > > > -r--r--r-- 1 root root 725032363 Jun 6 09:06
> > > > /mnt/test/KNOPPIX/KNOPPIX
> > > > > >
> > > > > > /mnt/d4/test:
> > > > > > total 3301420
> > > > > > -rw-r--r-- 1 jared jared 1916207104 Jun 30 04:13
extracted
> > > > > > -rw-r--r-- 1 jared jared 733317120 Jun 30 03:48
> > > > knoppix_v3.2-2003-06-06-en.iso
> > > > > > -rw-r--r-- 1 jared jared 727812929 Jun 30 05:29
recompressed
> > > > > >
> > > > > > -- end --
> > > > > >
> > > > > > -- jared@wordzoo.com
> > > > > >
> > > > > > "A black hole is where God is dividing by zero."
> > > > > > -- attributed to Roger Smith
> > > > > > _______________________________________________
> > > > > > debian-knoppix mailing list
> > > > > > debian-knoppix@linuxtag.org
> > > > > > http://mailman.linuxtag.org/mailman/listinfo/debian-knoppix
> > > > >
> > > > >
> > > > > --
> > > > > _______________________________________________
> > > > > debian-knoppix mailing list
> > > > > debian-knoppix@linuxtag.org
> > > > > http://mailman.linuxtag.org/mailman/listinfo/debian-knoppix
> > > >
> > > > _______________________________________________
> > > > debian-knoppix mailing list
> > > > debian-knoppix@linuxtag.org
> > > > http://mailman.linuxtag.org/mailman/listinfo/debian-knoppix
> > >
> > >
> > >
> >
>
>
> --
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