Re: strange RF_PROTECTED_SECTORS magic

[theo borm <theo_nbusr%borm.org@localhost>]

Thanks! Indeed something obvious.

regards,

Theo

Jukka Salmi wrote:
> Hello,
>
> theo borm --> netbsd-users (2009-06-18 15:05:42 +0200):
> [...]
>   
> > As I understood it the raidframe reserves RF_PROTECTED_SECTORS at the  
> > start of a raid volume. I would therefore expect that if I substract the  
> > size of a raid volume (raid0d) from the size of its container (sd0a), to  
> > get this same figure.
> >
> > If I do so, I get 1953525136-1953524992=144.
> > As far as I know RF_PROTECTED_SECTORS=64
> >
> > This does not add up. Am I missing something obvious?
> >     
>
> quoting the relevant [1]section from The NetBSD Guide:
>
>     Why isn't sizeof(raid0d) == (sizeof(wd1a) - RF_PROTECTED_SECTORS)?
>     Size of raid0d is based on the largest multiple of the stripe size
>     used for a RAID set. [...]
>
>
> HTH, Jukka
>
> [1] http://www.netbsd.org/docs/guide/en/chap-rf.html#chap-rf-setup-kerneldump
>
>