Re: Two disk RAID10 inactive on boot if partition is missing

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On 05/17/2016 06:13 AM, Mikael Abrahamsson wrote:
> On Tue, 17 May 2016, Peter Kay wrote:
> 
>> I'm not trying to boot from it, and I'm using Salix (Slackware), not a
>> debian based distribution. My boot partitions are not raided.
> 
> The setting would still be valid if your distribution defaults to not
> assembling and using degraded arrays on boot.

See the "Unclean Shutdown" section of "man md".

The kernel parameter you need is "md_mod.start_dirty_degraded=1".

Doing this is a really good way to end up with split brain.  Why do you
need to regularly boot without the devices that were present at shutdown?

Phil

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