* Modular kernel (2.6.20) and software raid auto detection
@ 2007-02-15 19:19 Andrew Walrond
2007-02-15 23:32 ` Neil Brown
0 siblings, 1 reply; 2+ messages in thread
From: Andrew Walrond @ 2007-02-15 19:19 UTC (permalink / raw)
To: linux-kernel
With my ide driver and the md stuff all built into the kernel, my software
raid drives and associated /dev/md? devices are detected and created by the
kernel.
With the md stuff built in but the ide driver modular and loaded later by
udev, the drives are not detected.
So, I guessed that perhaps if I made the md stuff modular aswell and load it
_after_ loading the ide driver, this might kickstart the auto-detect stuff.
But it didn't :(
Is there a way to make auto-detection work without having the ide driver built
in?
TIA
Andrew Walrond
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Modular kernel (2.6.20) and software raid auto detection
2007-02-15 19:19 Modular kernel (2.6.20) and software raid auto detection Andrew Walrond
@ 2007-02-15 23:32 ` Neil Brown
0 siblings, 0 replies; 2+ messages in thread
From: Neil Brown @ 2007-02-15 23:32 UTC (permalink / raw)
To: Andrew Walrond; +Cc: linux-kernel
On Thursday February 15, andrew@walrond.org wrote:
>
> With my ide driver and the md stuff all built into the kernel, my software
> raid drives and associated /dev/md? devices are detected and created by the
> kernel.
Yep.
>
> With the md stuff built in but the ide driver modular and loaded later by
> udev, the drives are not detected.
No, they aren't.
>
> So, I guessed that perhaps if I made the md stuff modular aswell and load it
> _after_ loading the ide driver, this might kickstart the auto-detect stuff.
> But it didn't :(
No, it wouldn't.
>
> Is there a way to make auto-detection work without having the ide driver built
> in?
Don't use in-kernel auto-detection. Use mdadm to do the
auto-detection for you.
mdadm --assemble --scan --homehost='<system>' --auto-update-homehost
might work providing your hostname has been set by the time it runs.
NeilBrown
^ permalink raw reply [flat|nested] 2+ messages in thread
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