Too much time wasted installing fedora on raid1

Arjan van de Ven arjan at fenrus.demon.nl
Mon Dec 19 21:12:32 UTC 2005


On Mon, 2005-12-19 at 23:16 +0300, Paul P Komkoff Jr wrote:
> Hello.
> 
> Last N systems I've installed, I am usually assembling software raid1
> at install time. The disk layout I'm using is trivial: 100MB +
> the rest, where on 1st 100MB is /dev/md0 (ext3, /boot) and the rest is
> /dev/md1 (lvm, other).
> 
> For whatever reason (haven't looked at the code yet :() anaconda
> issuing mdadm commands in such order that primary replica of unsynched
> md0 is second drive, and raid1 resync started first on md1.
> 
> So, to boot without changing bios settings back and forth (or without
> disabling 1st disk drive by any other means) it is nesessary to wait
> while md1 raid1 resyncs, which can be as long as 2 hours (250GB HDD).

I'm pretty sure that anaconda at some point deliberately did things to
avoid that sync. So I suspect it got reenabled for a good reason...




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