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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Nathan Whitehorn <nwhitehorn@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: Re: svn commit: r304142 - head/usr.sbin/bsdinstall/partedit
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Date: Thu, 18 Aug 2016 11:50:43 +0200
In-Reply-To: <b96c3f91-faaa-2552-b4da-2d0d382461af@freebsd.org> (Nathan
 Whitehorn's message of "Wed, 17 Aug 2016 09:30:10 -0700")
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Nathan Whitehorn <nwhitehorn@freebsd.org> writes:
> OK. In which configurations? My Dell servers, for instance, don't do
> this. How are they set up? What drivers are being used? Is this
> something that affects passthrough disks, RAIDs, disk images?

Most LSI MegaRAID controllers don't have real passthrough, only JBOD.
You can query the drive with "camcontrol identify passX", but the
controller does not report a stripe size for the volume (mfidY).

> The point is that *if the reported stripe size is wrong*, more things
> than partition alignment in the installer will suffer for it.

It's not wrong, it's non-existent, and I'm getting really tired of
repeating myself.

> Fixing the installer with a bandaid in the run-up to a release is
> fine, but *we need to fix the underlying problem*.

We can't, because hardware sucks, and I'm getting really tired of
repeating myself.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no