[CentOS] raid10, centos 4.x
Christopher Chan
christopher.chan at bradbury.edu.hk
Fri Dec 11 00:28:41 UTC 2009
John R Pierce wrote:
> I just created a 4 drive mdadm --level=raid10 on a centos 4.8-ish system
> here, and shortly thereafter remembreed I hadn't updated it in a while,
> so i ran yum update...
>
> while installing/updating stuff, got these errors:
>
> Installing: kernel #######################
> [14/69]
> raid level raid10 (in /proc/mdstat) not recognized
> ...
> Installing: kernel-smp #######################
> [19/69]
> raid level raid10 (in /proc/mdstat) not recognized
>
>
> is this a problem? the raid10 'seems' to work....
>
If anaconda is doing the update here, I guess it is because anaconda in
4.x does not have raid10 personality support. The raid10 personality is
NOT the same as nested raid1+0. It is an entirely new module from Neil
Brown that has a poor choice of a name imho. It does things very
differently from what you expect from a nested raid1+0 array.
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