Chunk Size

Hi,

I have been using Linux Software Raid 5 for years, it is excellent. If anyone involved in the development of it is ever in Perth Australia look me up and i will buy you many beers.
Last year i switched from using pata to sata, to be honest it did not result in the performance gains I was hoping for and when a drive fails it sometimes crashes the host machine (at least with a 2.4 kernel) but otherwise its just as dependable as pata raid 5 was. I used to just use raid for the data volume of the server but recently i am using it for / with a separate raid 1 partition for /boot , it works very well.

In the past I have had to do a few crazy things with raidreconf and got away with most of them, however that was when i was using raidtools2 and now its all mdadm instead, so my question is this, is there anyway to change the chunk size on an existing raid 5 partition without destroying the data on it and whilst it is mounted at / . Yeah you read that right, I am laughing too, but I just wanted to be sure i am not missing something obvious here, I have in the past found huge performance gains by using larger chunk sizes for big file copies and would like to experiment.

Thanks in advance!

--------------------------

Rolf Schatzmann
MacTherapy Australia Pty Ltd
Fax 08 9444 2560
Mobile 0410 577664

We love GNU/Linux Debian.

Http://www.mactherapy.com

begin:vcard
fn:Rolf Schatzmann
n:Schatzmann;Rolf
org:MacTherapy Australia Pty Ltd
adr:;;Po Box 381;Mt Lawley;WA;6929;Australia
email;internet:[email protected]
title:Director
tel;work:0410 577664
tel;fax:08 94442560
tel;cell:0410 577664
x-mozilla-html:TRUE
url:http://www.mactherapy.com
version:2.1
end:vcard