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stages/bootupd: support installing to a partition of a device

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For ppc64le we need to pass in a partition (i.e. /dev/loop0p1) rather
than the root device (/dev/loop0) to the --device argument of bootupctl.
Let's add a partition field and find the device node based on the user
specified partition.

On ppc64le this would look something like:

```
      - type: org.osbuild.bootupd
        options:
          bios:
            device: disk
            partition:
              mpp-format-int: '{image.layout[''POWERPC-PREP-BOOT''].partnum}'
          static-configs: true
          deployment:
            osname: fedora-coreos
            ref: ostree/1/1/0
        devices:
          disk:
            type: org.osbuild.loopback
            options:
              filename: disk.img
              partscan: true
        mounts:
          - name: root
            type: org.osbuild.xfs
            source: disk
            partition:
              mpp-format-int: '{image.layout[''root''].partnum}'
            target: /
          - name: boot
            type: org.osbuild.ext4
            source: disk
            partition:
              mpp-format-int: '{image.layout[''boot''].partnum}'
            target: /boot
```
This commit is contained in:
Dusty Mabe 2024-01-09 15:32:33 -05:00 • committed by Achilleas Koutsou
parent 492dc6021c
commit 8cce659ec5
1 changed files with 19 additions and 0 deletions
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19
stages/org.osbuild.bootupd
View file

@ -10,6 +10,7 @@ The project is deployed in Fedora CoreOS and derivatives
"""
import contextlib
import json
import os
import subprocess
import sys
@ -60,6 +61,10 @@ SCHEMA_2 = r"""
"device": {
"description": "Name of stage device to install GRUB for BIOS-based systems.",
"type": "string"
},
"partition": {
"description": "The partition on the stage device to install to, if installing to a partition",
"type": "number"
}
}
}
@ -86,6 +91,7 @@ def main(args, options):
static_configs = options.get("static-configs", False)
bios = options.get("bios", {})
device = bios.get("device", "")
partition = bios.get("partition", None)
# Get the path where the filesystems are mounted
mounts = args["paths"]["mounts"]
@ -107,6 +113,19 @@ def main(args, options):
# user). Let's map that name to the actual loopback device
# that now backs it.
target = args["devices"][device]["path"]
# If we are targeting a partition on the device rather than
# the whole device itself (i.e. MBR) then let's find that
# partition's device.
if partition:
cp = subprocess.run(["sfdisk", "--json", target],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
encoding='utf8',
check=True)
disk_table = json.loads(cp.stdout)["partitiontable"]
disk_parts = disk_table["partitions"]
index = partition - 1 # partition index starts at 0
target = disk_parts[index]["node"]
bootupd_args.append(f"--device={target}")
if static_configs:
bootupd_args.append("--with-static-configs")