On Tue, 2002-02-26 at 16:38, R P Herrold wrote:
> On Tue, 26 Feb 2002, Grantham, Patrick wrote:
>
> > Seems odd to me, say this is accomplished. What price would be paid in the
> > way of overhead on the server, constantly synching the file in ram (read)
> > with the file on the disk (writes)?
>
> Rsync can handle that with relativey little load; The issue is
Sort of - rsync is designed for low network load, not necessarily low
filesystem load. If the file metadata differs, rsync will start to do a
block scan to determine differences between the files. If you have a
really big file, you're talking about a lot of FS activity, and it
doesn't address the issue of file consistency if something writes to the
file while you're rsync'ing it.
--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/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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