Re: Change default kernel cmdline to make dracut only online the minimum of devices

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On Thu, 2009-12-24 at 04:55 +0100, Hans de Goede wrote:
> Hi,
> 
> On 12/25/2009 06:53 AM, Jon Masters wrote:
> > On Sun, 2009-12-20 at 13:35 +0100, Hans de Goede wrote:
> >
> >> So I would like to propose to add the necessary kernel cmdline paramters
> >> to grub.conf, to tell dracut to only online certain devices (those needed
> >> for /)
> >
> > In my opinion, if this is done, it must be done asap. But I really think
> > it's a bad idea to do this now. I know it affects boot time for a small
> > number of users who don't reboot that often. Perhaps you have some
> > indicator of how bad that problem is?

> This is not about affecting boot time, but about headless systems not booting
> when they have a luks volume somewhere (even if that is not needed for boot).
> 
> Or about assembling (and thus marking as dirty) (md) RAID arrays which do
> not belong to the system at all, when a system is connected to a SAN, etc.
> 
> This really is the right thing to do, and yes we should have done it earlier, but
> we definitely should do it before the RHEL-6 beta.

Ah yes, good call. Thanks for looking at that.

Jon.


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