linux-kernel - Re: Failover root devices

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Message-ID: <55FB03B8.2000101@nod.at>
Date:	Thu, 17 Sep 2015 20:17:28 +0200
From:	Richard Weinberger <richard@....at>
To:	Drew DeVault <sir@...wn.com>,
	Richard Weinberger <richard.weinberger@...il.com>
Cc:	Ortwin Glück <odi@....ch>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Failover root devices

Am 17.09.2015 um 20:05 schrieb Drew DeVault:
>> Better send a patch to dracut folks. :-)
>> Major distros use it and if the feature is nice other initramfs implementations will adopt it too.
> 
> dracut is the common one sure, but I'm still not confident that it's the right place to put this. How would that feature look? Would we have the root= parameter use a format that's
> specific to dracut and no longer a sane kernel parameter? Would we use a second parameter and discard the root= parameter? I think all of these are suboptimal solutions. No, the
> right way, I think, is to implement this in the kernel and let the init systems take it from there themselves.

I'd patch dracut to support kernel command lines like "root=/dev/diskX root=/dev/diskY". initramfs is allowed to parse/use the command line.
So, you can do what you want.

Thanks,
//richard
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