[CentOS] mkfs.ext3 on a 9TB volume

Mon Sep 12 16:18:44 UTC 2005
Chris Mauritz <chrism at imntv.com>

Joshua Baker-LePain wrote:

>On Mon, 12 Sep 2005 at 12:05pm, Chris Mauritz wrote
>
>  
>
>>Joshua Baker-LePain wrote:
>>
>>    
>>
>>>The one gotcha in this setup (other than not being able to boot from the 
>>>big RAID5 arrays, since each is >2TiB) is that the version of mdadm 
>>>shipped with RHEL4 does not support array members bigger than 2TiB.  I had 
>>>to upgrade to an upstream release to get that support.
>>> 
>>>      
>>>
>>I would be interested in hearing the details on that.  I ended up 
>>hunting down all the mdadm stuff and recompiling everything from SRPMs.
>>    
>>
>
>Which part -- the booting or the mdadm 2TiB support?  The former I've 
>talked about on this list before.  There's not much to say on the latter.  
>mdadm-1.6.0-2 (still current in RHEL4, AFAIK) says "Cannot get size of 
>/dev/sda4: File too large", e.g., when an array member is > 2TiB.  I 
>downloaded mdadm-1.11.0.tgz from 
><http://www.cse.unsw.edu.au/~neilb/source/mdadm/> (which was current at 
>the time), did 'rpmbuild -tb' on it, and installed the resulting RPM, 
>which worked.
>  
>

Heh, not the booting.  8-)

OK, so we basically did the same thing with mdadm then.  I think I'm 
running 1.12.mumble and it seems to be up to version 2 now.  I've not 
fiddled with it at all since the install since it was working OK and I 
didn't want to upset the apple cart.

Cheers,