coreos / coreos/ignition

btrfs filesystems cannot be specifed with multiple devices

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#815 6 comments 4 reactions 0 assignees View on GitHub

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kind/enhancement spec change
Dominant language
Go
Stars
974
Forks
296
Avg merge
6d 14h
Merged PRs (30d)
9

Description

Feature Request

Support multiple devices for btrfs filesystems in *.ign configuration.

Environment

Bare metal, PXE boot.

Desired Feature

Essentially to have this configuration supported:

storage:
  disks:
    - device: /dev/sda
      wipe_table: false
      partitions:
        - label: srva
          number: 1
          start: 0
          size: 0
    - device: /dev/sdb
      wipe_table: false
      partitions:
        - label: srvb
          number: 1
          start: 0
          size: 0

  filesystems:
    - name: srv
      mount:
        device: [ /dev/sda1, /dev/sdb1 ]
        format: btrfs
        wipe_filesystem: false
        label: SRV

Other Information

This works perfectly now, but with only single device support.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the Go code that parses and provisions filesystem entries from *.ign configurations, then trace how the single-device mount configuration is handled. Use the requested configuration as the acceptance case and verify that a btrfs filesystem can be created and mounted across both listed devices.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
infrastructure
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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