linux-kernel - Re: RSDL for 2.6.21-rc3- 0.29

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Message-id: <200703121624.11417.gene.heskett@gmail.com>
Date:	Mon, 12 Mar 2007 16:24:11 -0400
From:	Gene Heskett <gene.heskett@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Patrick Mau <mau@...ar.ping.de>,
	Douglas McNaught <doug@...aught.org>
Subject: Re: RSDL for 2.6.21-rc3- 0.29

On Monday 12 March 2007, Patrick Mau wrote:
>On Mon, Mar 12, 2007 at 03:43:09PM -0400, Douglas McNaught wrote:
>> Gene Heskett <gene.heskett@...il.com> writes:
>> > On Monday 12 March 2007, Douglas McNaught wrote:
>> >>Gene Heskett <gene.heskett@...il.com> writes:
>> >>> I'd considered it, but with 32 dle entries, the whole strace
>> >>> output would be terrabytes & I don't have THAT much disk.  Not to
>> >>> mention it traces only the parent process, so tar would be merrily
>> >>> marching along to its own drummer and not traced I'm  afraid.
>> >>
>> >>$ strace -ff
>> >>
>> >>-Doug
>> >
>> > Someone else suggested the single -f, and I tried that, but even
>> > with the shell history set for 100,000 lines, i can't get back to
>> > the start, and I think its mucking with the shell arguments
>> > numbering as what I can see is about 5 reads through /etc/services
>> > accompanied by endless complaints of -EBADFD, the the logfile it
>> > generates says the port it was given was rejected when amcheck was
>> > run, here is that snip:
>>
>> I'd do 'strace -ff -o /tmp/amanda-strace <command>', which will give
>> you a set of files in /tmp, one for each PID created by fork().  Then
>> find the one that has the 'tar' invocation you're looking for.
>
>Hi,
>
>I hope you don't mind me jumping in ...
>
>Why not temporarly replace "/bin/tar" with a shell script that does:
>
>#!/bin/sh
>exec strace -f -o output /bin/real.tar $@
>
>That should be working, shouldn't it ?
>
>Cheers,
>Patrick

It should I'd think, for those instances where these scripts are run by 
hand and therefore have a shell to output to.  I'll give that a try when 
I get my script problem resolved, its a basic diff in the operation of 
real tapes and vtapes I need to get right for both scenarios.

Good Idea(TM), Thanks.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
"Ignorance is the soil in which belief in miracles grows."
-- Robert G. Ingersoll
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