Re: Failover root devices

From: Austin S Hemmelgarn
Date: Thu Sep 17 2015 - 14:38:07 EST


On 2015-09-17 13:47, Richard Weinberger wrote:
On Thu, Sep 17, 2015 at 1:49 PM, Drew DeVault <sir@xxxxxxxxx> wrote:
On 2015-09-17 1:40 PM, Ortwin GlÃck wrote:
You can do that completely in user space from an initramfs.

Yep, I'm aware of that. I think it would still be useful for the kernel
to support it. Bonus - if the kernel supports it, there's a standard way
of doing it that would propegate down to the various initramfs designs
of the distros without having me write patches against all of them.
Right?

I really don't see why we need this feature in-kernel as it can be
done perfectly fine
in userspace. Every non-trivial system needs an initramfs anyway these days.

Ha, not unless you're using systemd. I have more than 2 dozen servers with complex setups that boot just fine without an initramfs. Yes there is more setup done in initramfs these days, but it's still not actually needed in most cases except complicated storage setups.

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