pmaports/main/postmarketos-base/devmappings.initd
Robert Yang 6d25c1bef6 postmarketos-base: Add openrc service that creates partition mappings (!115)
When util-linux v2.32 updated v2.33, remounting a partition stopped
working.

  mount -n -o remount,rw /
  mount: /: can't find LABEL="pmOS_root".

This service will add the pmOS rootfs partitions to device mapper so that
the remount root partition will succeed.

Fixes issue #156
2018-12-26 12:08:36 -05:00

33 lines
1.2 KiB
Text

#!/sbin/openrc-run
description="Add partition devmappings"
depend()
{
before root
}
start()
{
partitions="$(grep -v "loop\|ram" < /proc/diskstats |\
sed 's/\(\s\+[0-9]\+\)\+\s\+//;s/ .*//;s/^/\/dev\//')"
echo "$partitions" | while read -r partition; do
case "$(kpartx -l "$partition" 2>/dev/null | wc -l)" in
2)
einfo "Mount subpartitions of $partition"
kpartx -afs "$partition"
# Ensure that this was the *correct* subpartition
# Some devices have mmc partitions that appear to have
# subpartitions, but aren't our subpartition.
if blkid | grep -q "pmOS_boot"; then
break
fi
kpartx -d "$partition"
continue
;;
*)
continue
;;
esac
done
}