Re: Help with recovering a RAID5 array

[Ole Tange]

Hi Stefan.

Please use the mailing list parallel@gnu.org for support (unless you
want to hire me).

>From "man parallel":

Your bug report should always include:

· The error message you get (if any).

· The output of parallel --version. If you are not running the latest
released version you should specify why you believe the problem is not
fixed in that version.

· A complete example that others can run that shows the problem. A
combination of seq, cat, echo, and sleep can reproduce most errors. If
your example requires large files, see if you can make them by
something like seq 1000000 > file.

· The output of your example. If your problem is not easily reproduced
by others, the output might help them figure out the problem.

If you suspect the error is dependent on your environment or
distribution, please see if you can reproduce the error on one of
these VirtualBox images:
http://sourceforge.net/projects/virtualboximage/files/

Specifying the name of your distribution is not enough as you may have
installed software that is not in the VirtualBox images.

If you cannot reproduce the error on any of the VirtualBox images
above, you should assume the debugging will be done through you. That
will put more burden on you and it is extra important you give any
information that help.


/Ole

On Fri, May 3, 2013 at 12:06 PM, Stefan Borggraefe <stefan@spybot.info> wrote:
> Hello Ole,
>
> thank you for your answer on the linux-raid mailing list. Very
> helpful input!
>
> I now also learned about your tool parallel and watched your
> videos about it on youtube. This seems to be a great tool
> and I would like to safe some time the way you suggest to
> combine it with the dd command.
>
> But... following even the simpe examples in your videos does
> not work. I am really starting to feel dump right now.
>
> I am using the version from the parallel package in Ubunu 12.04.
> I also tried the versions in Debian 6.0 and Ubuntu 13.04, but
> got the same results.
>
> I simplified your first example in the first video to narrow
> down my mistake.
>
> stefan@teraturm:~/test$ ls
> auth.log  auth.log.1  kern.log  kern.log.1
> stefan@teraturm:~/test$ ls | parallel gzip
> gzip: compressed data not written to a terminal. Use -f to force compression.
> For help, type: gzip -h
>
> And a version of your ping example:
>
> stefan@teraturm:~/test$ seq 1 255 | parallel -j255 ping -c 1 192.168.13.{}
> Usage: ping [-LRUbdfnqrvVaAD] [-c count] [-i interval] [-w deadline]
>             [-p pattern] [-s packetsize] [-t ttl] [-I interface]
>             [-M pmtudisc-hint] [-m mark] [-S sndbuf]
>             [-T tstamp-options] [-Q tos] [hop1 ...] destination
> /bin/bash: -c: option requires an argument
> /bin/bash: 1: command not found
> /bin/bash: 192.168.13.{}: command not found
>
> I would love using your tool! What am I doing wrong? It must be something
> really simple. Thank you for your help!
>
> Stefan