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Differential D2573

NanoBSD: support for GPT partitioning
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Authored by thomas on May 17 2015, 7:12 PM.
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Summary

This change introduces a new variable NANO_PART_SCHEME, which can be used to
specify the desired partitioning scheme. The default is "MBR", providing a
legacy PC partition table, for backwards compatibility.

The alternate value "GPT" causes a GPT partitioning to be used instead. The
two system slices are p1 and p2. The configuration slice is p3. An additional
boot slice p15 is created to hold the GPT boot code.

Test Plan

Tested with the "rescue_amd64" configuration

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thomas updated this revision to Diff 5439.May 17 2015, 7:12 PM
thomas retitled this revision from to NanoBSD: support for GPT partitioning.
thomas updated this object.
thomas edited the test plan for this revision. (Show Details)
thomas added a reviewer: imp.
Herald added a subscriber: imp. · View Herald TranscriptMay 17 2015, 7:12 PM
imp edited edge metadata.May 27 2015, 3:50 PM

This is a good start, but I think needs some cleanup.

Also, I have a bunch of patches to use mkimage which doesn't require root at all, as well as brook's NO_ROOT stuff to build the mtree files that makefs can use to populate the whole tree. These patches are incomplete at this time, but is more in the direction I'd hoped to go. How does that fit with what you've done?

tools/tools/nanobsd/defaults.sh
425

Why not have
CFG_PART=s3 # for MBR
or
CFG_PART=p3 # for GPT
CFG_DEV=${NANO_DRIVE}${CFG_PART}

and use that here:

echo "mount -o ro /dev/${CFG_DEV}" > conf/default/etc/remount

With similar for the other partitions / slices we used to use...

530

Won't gpart do all this math now so we don't need to? And can't we just call gpart directly to do it?

613–623

I thought gpart was able to do this too, w/o needing to resort to bsdlabel at all.

thomas added a comment.May 30 2015, 10:29 AM

Thanks for your feedback, Warner! I will send an updated patch.

emaste added a subscriber: emaste.Nov 15 2018, 9:21 PM

Still working on this?

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nanobsd/
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Diff 5439

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tools/tools/nanobsd/defaults.sh

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