Re: RFC: mdadm and bringing up raid sets from initrd (dracut)

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Hi,

On 07/14/2009 03:39 PM, Doug Ledford wrote:
On Jul 14, 2009, at 6:59 AM, Hans de Goede wrote:
Hi,

As you probably know I'm working on making Fedora 12 use mdraid
instead of dmraid for Intel BIOS-RAID setups.

The installer (anaconda) part is mostly done (needs more testing)
and now I'm looking at implementing support for this in dracut
(the new mkinitrd for Fedora 12).

So I've been testing how this works for both imsm mdraid sets
and native mdraid metadata sets, in both cases using a 2 disk
mirror, so that the set can also be brought up in degraded mode.

Currently the udev rules use incremental assembly like this:
mdadm -I /dev/mdraid-member

Hmmm...does dracut use udev during initramfs time?

Yes, it uses udev for everything, making discovery of / consistent
with the discovery of other storage devices.

<snip>

Are we going to be totally changing this with
dracut and F12? This method very nicely resolves the issues you posted.


Yes.

Regards,

Hans
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