Installing Ubuntu server on software raid

Mark Kirkwood markir at
Mon Dec 29 23:07:01 UTC 2008

Ruben Laban wrote:
> Hi Mark,
> On Sunday 28 December 2008 at 09:32 (CET), Mark Kirkwood wrote:
>> So to the point of the message - have I missed an option on the install
>> cd : can you configure raid chunksize? (it only seemed to want to know
>> how many disks were to be in the array).
> As far as I know, the installer has no support for that (unless perhaps when 
> using the 'expert' mode which add *a lot* of questions during installation).
> I tend to drop to a shell when I want to create "special" software raid setups 
> (like raid10 for example). From the shell (alt-f4) I manually run the 
> appropriate mdadm commands to configure the raid. Once the raid is 
> configured, the installer does pick up the raid volumes and 
> installation/partitioning can be continued using the installer.

Thanks! However it seems to me that a nice addition would be an option 
for chunksize - after all it asks you how many disks are in the array, 
and chunksize is probably the next most likely thing you would want to 

Overall I think the partitioner is very good, and pleasant to use (I got 
to play with it about 4-6 times whilst diagnosing the software raid boot 
problems I was having...).



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