RAID gotchas!

[Jeffrey Ross]

Roberto Ragusa wrote:
> Jeffrey Ross wrote:
>
>   
>> Now comes the fun part, you need to move your data to the new
>> partition.  Although I've read where you can shrink the partition and
>> convert to a raid volume, I decided against that.
>>
>> I used dump/restore using the command:
>>
>> dump -0 -b 1024 -f - /dev/sdaX | restore -rf -
>>     
>
> I've tried the shrink method in the past without problems (I think
> you have read my own description of the needed steps).
> In other cases, I just copied the files (you get a free defrag too).
> I'd trust cp, "tar c|tar x", rsync (all with powerful
> "copy everything" options), but I would be a little worried
> about dump/restore (in any case I usually work on reiserfs,
> so dump/restore is not an option).
>
> Dump is considered a bad choice by Linus himself; read this:
>
>   http://lwn.net/2001/0503/a/lt-dump.php3
>
> (a few years ago, but the words are quite strong)
>
> Best regards.
>   

I've read the arguments here's the rebuttal to the 2001 message:
http://dump.sourceforge.net/isdumpdeprecated.html