RE: Single md physical device limit

Interesting, when I initially built my array (with RedHat raidtools-0.90
not mdctl/mdadm, on kernel 2.4.17) it stated that I could only stripe
across 12 devices.  Do you have any idea from which this number comes?
Is it an old limit?

Thanks again for your help.

Regards,
Andy.

-----Original Message-----
From: Neil Brown [mailto:neilb@cse.unsw.edu.au] 
Sent: Monday, August 19, 2002 4:14 PM
To: Rechenberg, Andrew
Cc: linux-raid@vger.kernel.org
Subject: Re: Single md physical device limit


On Monday August 19, ARechenberg@shermanfinancialgroup.com wrote:

Without drastically modifying the kernel code, is there any way to
increase the physical device limit when building a single md device?

I

believe that the currently limit is 12 physical disks (?)

No, but the current limit is 27 .....

For reference, I would like to stripe across an entire Dell PowerVault
220S, which has 14 drives in it.

so this should work fine.

NeilBrown