maas sends duplicate device info in config / need to be multipath aware

Bug #1526542 reported by Scott Moser on 2015-12-15
18
This bug affects 3 people
Affects Status Importance Assigned to Milestone
MAAS
High
Jeffrey C Jones
1.10
Undecided
Unassigned
1.9
Undecided
Unassigned

Bug Description

when looking at bug 1523779 i tried to reproduce and hit an error.
maas sends a config like below.

The issue is that it has told curtin to do two different things with the device that is 'serial: IBM_IPR-0_5EC29C0000000080'. That disk is a multipath disk. So when maas commissioned it saw the disk as 2 devices, and then tells curtin to use it as the root device once and also to format it and put an mbr filesystem on it.

Theres no sane way that curtin could determine which is the "right" thing to do. It should notice the situation and exit, but maas is still going to have to learn about multipath.

-- maas sent config --
storage:
  config:
  - {grub_device: true, id: sda, model: IPR-0 5EC29C00, name: sda, ptable: msdos, serial: IBM_IPR-0_5EC29C0000000080, type: disk, wipe: superblock}
  - {id: sdb, model: IPR-0 5EC29C00, name: sdb, serial: IBM_IPR-0_5EC29C0000000060, type: disk, wipe: superblock}
  - {id: sdc, model: IPR-0 5EC29C00, name: sdc, serial: IBM_IPR-0_5EC29C0000000040, type: disk, wipe: superblock}
  - {id: sdd, model: IPR-0 5EC29C00, name: sdd, serial: IBM_IPR-0_5EC29C0000000020, type: disk, wipe: superblock}
  - {id: sde, model: IPR-0 5EC29C00, name: sde, serial: IBM_IPR-0_5EC29C00000000C0, type: disk, wipe: superblock}
  - {id: sdf, model: IPR-0 5EC29C00, name: sdf, serial: IBM_IPR-0_5EC29C00000000A0, type: disk, wipe: superblock}
  - {id: sdh, model: IPR-0 5EC29C00, name: sdh, serial: IBM_IPR-0_5EC29C0000000080, type: disk, wipe: superblock}
  - {id: sdi, model: IPR-0 5EC29C00, name: sdi, serial: IBM_IPR-0_5EC29C0000000060, type: disk, wipe: superblock}
  - {id: sdj, model: IPR-0 5EC29C00, name: sdj, serial: IBM_IPR-0_5EC29C0000000040, type: disk, wipe: superblock}
  - {id: sdk, model: IPR-0 5EC29C00, name: sdk, serial: IBM_IPR-0_5EC29C0000000020, type: disk, wipe: superblock}
  - {id: sdl, model: IPR-0 5EC29C00, name: sdl, serial: IBM_IPR-0_5EC29C00000000C0, type: disk, wipe: superblock}
  - {id: sdm, model: IPR-0 5EC29C00, name: sdm, serial: IBM_IPR-0_5EC29C00000000A0, type: disk, wipe: superblock}
  - {device: sda, id: sda-part1, name: sda-part1, number: 1, offset: 4194304B, size: 283786608640B, type: partition, uuid: 6193de67-6b76-4cb6-bf6d-25518842d54b, wipe: superblock}
  - devices: [sda-part1]
    id: vgroot
    name: vgroot
    type: lvm_volgroup
    uuid: 93d1991a-9631-4051-81dd-c60d3267f23b
  - {id: vgroot-lvroot, name: lvroot, size: 283782414336B, type: lvm_partition, volgroup: vgroot}
  - {fstype: ext4, id: vgroot-lvroot_format, label: root, type: format, uuid: efdcbb0b-b9ca-455f-8cf9-1dbfc820717a, volume: vgroot-lvroot}
  - {device: vgroot-lvroot_format, id: vgroot-lvroot_mount, path: /, type: mount}
  version: 1

Related branches

Changed in maas:
status: New → Triaged
importance: Undecided → High
milestone: none → 1.9.1
Changed in maas:
assignee: nobody → Jeffrey C Jones (trapnine)
status: Triaged → In Progress
Changed in maas:
status: In Progress → Fix Committed
Newell Jensen (newell-jensen) wrote :

This still needs to be backported to MAAS 1.9 I believe.

Changed in maas:
milestone: 1.9.1 → 2.0.0
Changed in maas:
status: Fix Committed → Fix Released
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