Re: Calculating swidth On A RAID6 Volume

[Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>]

Le Tue, 20 Jul 2010 16:13:29 +0200
Michael Weissenbacher <mw@xxxxxxxxxxxx> écrivait:

>  
> IIRC sunit and swidth are both specified in units of 512 bytes (don't
> ask me why) 

Because this is the disk block size for all disks drives ever made
except the very latest ones (4096 bytes blocks) and the special
RAID-formatted 520 bytes sometimes in use in the past.

> so a sunit value of 512 would mean 256KB stripe size which
> is correct :-)

exactly. Or use su and sw to specify the size in k, m, etc.

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