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nanobsd: Add a provisional populate /data function
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Authored by jlduran on Feb 1 2025, 4:26 AM.
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Details

Summary

Add a provisional _populate_data_part function. It populates the
optional /data partition, but using makefs(8), which is more in-line
with what release engineering uses to create images.

Test Plan
  1. The default, no /data slice:

    $ sh nanobsd.sh -U
  1. A custom /data slice without a metalog file (default user/group):

    $ mkdir -p ~/nanobsd/test $ echo "NANO_DATADIR=$HOME/nanobsd/test/data" > ~/nanobsd/test/config.nano $ echo "NANO_DATASIZE=2000000" >> ~/nanobsd/test/config.nano $ sh nanobsd.sh -U -c ~/nanobsd/test/config.nano
  1. A custom /data slice with a metalog file:

    $ mkdir -p ~/nanobsd/test $ echo "NANO_DATADIR=$HOME/nanobsd/test/data" > ~/nanobsd/test/config.nano $ echo "NANO_DATASIZE=2000000" >> ~/nanobsd/test/config.nano $ echo "NANO_METALOG_DATA=$HOME/nanobsd/test/metalog_data" >> ~/nanobsd/test/config.nano $ sh nanobsd.sh -U -c ~/nanobsd/test/config.nano
NOTE: Initially not wired, the -U flag is available later in the commit series.

Diff Detail

Repository
rG FreeBSD src repository
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Build Status
Buildable 62203
Build 59087: arc lint + arc unit