[Bug 120375] Re: cannot boot raid1 with only one disk

[Doug Minderhout]

>From my perspective, what needs to happen is that the issue of booting from a degraded root on kernel software raid needs a simple, easy to implement fix for those who run fixed configuration machines, I.E. servers and the like.

The provided patches seem to accomplish this goal with a boot parameter
that an individual that administers/manages servers would be able to
apply. Furthermore, it would be reasonable to me that the server
distribution have that boot parameter set as a default to minimize the
number of surprises.

Someone running a server system is unlikely to be using external storage
that is not for backup of some sort or some type of more reliable
hardware configuration (SAS, SCSI etc...) and can be considered on their
own recognizance for doing weird things like making a raid stripe of
firewire drives or something bizarre like that.

The issue of a desktop system booting with missing raid elements is
another issue. The same workaround should be available for those who
choose to run their root on software raid disks with the aforementioned
caveats. It would of course be quite nice to have some sort of iterative
y/n/r prompt sort of setup for filesystems listed in /etc/fstab so that
a marginally technical user could interactively make a decision about
continuing to bring the system up with degraded disks or a more
technical user could set the kernel parameter, again at their own risk.

This discussion, while absolutely necessary, is somewhat political and
outside the scope of this bug and belongs in another bug if for no other
reason than to close the bug and stabilize the distro for those who are
running business functions on it.

I am using Alexanders patch and will switch over to Dustin's as I have
time. Thank you both for your contributions.

-- 
cannot boot raid1 with only one disk
https://bugs.launchpad.net/bugs/120375
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