On Fri Jan 16, 2009 at 11:51:24AM +0100, Henry, Andrew wrote:
> > I believe it would be helpful to many to note in the mdadm manual
> > page, that only version 0.90 superblocks can be auto-detected by
> > current kernels.
> >
> > Nagy Attila Gabor
>
> You know, I used 0.90 superblocks on CentOS 5.2 and they were
> recognized (ie assembled so that Cat/proc/mdstat saw the discs).
>
> I just moved to Ubuntu with 2.6.27 and decided on 1.2 superblocks and
> they were auto assembled anyway. Is this what we mean when we say
> "autodetected by the kernel" or have I misunderstood?
>
> If im right then it doesn't seem to be an issue with later kernels.
>
Most current distributions use a ramdisk to load up a base system
(busybox + a few other tools) which allows for more advanced detection
of arrays than the kernel can do itself. This is what you'll be seeing
- without a ramdisk the kernel will fail to assemble arrays with 1.0+
superblocks.
Cheers,
Robin
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( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> |
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