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Re: Disc Cloning, partitioning.

To: linux-xfs@xxxxxxxxxxx
Subject: Re: Disc Cloning, partitioning.
From: Derek Glidden <dglidden@xxxxxxxxxxxxxxx>
Date: 10 Jan 2002 17:58:40 -0500
In-reply-to: <20020110152358.A15395@xxxxxxxxxxx>
References: <20020110152358.A15395@xxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Thu, 2002-01-10 at 16:23, pac@xxxxxxxxxxxxxx wrote:
>  
> Is there a tool that I can use to grab the partition table from
> One disc and flash it on a Second disk? I didnt see anything like 
> that from gpart or partimage. 
> 
>  I basically want to be able to automatically clone an entire disk, 
> with all of the data, but not by using 'dd' or ghost. Hopefully 
> something that is smart enough to forget all the empty zeros.

sfdisk and rsync or dump/xfsdump.

You could probably script it by looking at /etc/fstab or
/proc/partitions or something, although disks with different geometries
will catch you.  If they're IDE, you run into situations where a lot of
systems, even with identical disks, can ID the geometry differently
depending on what controller they're plugged into and how the BIOS
settings are configured.

-- 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval 

usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
    | extract_mpeg2 | mpeg2dec - 

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