Re: Any risk switching mdadm to static?

[Tommy Apel Hansen <tommyapeldk@gmail.com>]

Hello Mark,
if you use genkernel initramfs you shouldn't have any problems, just
make sure you mdadm.conf is up to date when you ask genkernel to make
the initramfs, what the initramfs does it to boot your system into a
ramdisk and then initialize everything from there before pivoting into
the real OS, worst case you'll end up in a rescure shell where you can
start up the md's and then ask the system to use them after you exit the
shell.

/Tommy

On Wed, 2012-12-26 at 09:57 -0800, Mark Knecht wrote:
> Hi,
>    I run a bunch of home Gentoo systems most of which use mdadm,
> currently version 3.1.4. I do not currently use initramfs's on any of
> these systems but figure it's time for me to crawl out of my dark ages
> swamp and try to become more enlightened.
> 
>    QUESTION: Is there an significant risk that a normal Gentoo system
> of the stable variety (I.e. - not ~amd64) would encounter any problems
> booting if mdadm-3.1.4 was rebuilt using the static flag? If it
> matters most of my RAIDs are metadata-0.9. One is 1.2.
> 
>    If I did encounter a problem and couldn't boot is there a way to recover?
> 
>    Please note, I'm not asking right now about using mdadm from within
> an initramfs. I'm only trying to ensure that if I rebuild mdadm with
> the static flag the current system is still likely to boot OK.
> 
>    Folks on the Gentoo list say they didn't have any problems
> switching, but they switched a long, long time ago so I'm just trying
> to be extra sure.
> 
> Thanks in advance,
> Mark
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