[Bug 2088061] Re: Fail configuring lvm_partition when multiple LVs of same name exist

[Merlin Hartley]

a workaround of course is to rename the LVs in the old VGs ... but that
may be sub-optimal for some workflows.

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Title:
  Fail configuring lvm_partition when multiple LVs of same name exist

Status in subiquity package in Ubuntu:
  New

Bug description:
  When curtin compares the size of the Logical Volume (LV) against what
  is specified in autoinstall.yaml; it does not specify which Volume
  Group (VG) to use.

  In a machine with multiple different VGs each containing LVs with the
  same names (e.g. "root" on old system disks) this causes the installer
  to FAIL.

  "finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL:
  configuring lvm_partition: lvm-partition-root"

  This occurs even when specifying which VG to use in autoinstall.yaml.


  === command output used by curtin ===

  root at holly-b:/# lvdisplay -C --separator = --noheadings -o lv_name,lv_size --units=B
    root=86973087744B
    scratch=904099004416B
    swap=8589934592B
    root=99996401664B
    scratch=892203958272B
    swap=7998537728B
    root=99996401664B
    scratch=1891861790720B
    swap=7998537728B

  ============================================

  
  === proposal of command to use instead - specifying the VG ===

  root at holly-b:/# lvdisplay -C --separator = --noheadings -o lv_name,lv_size --units=B HollybSys00
    root=99996401664B
    scratch=1891861790720B
    swap=7998537728B

  ============================================

  === snippet from autoinstall.yml ===

      -   device: disk-nvme0n1
          id: partition-lvm
          number: 3
          preserve: true
          size: 1999858827264
          type: partition
      -   devices:
          - partition-lvm
          id: lvm-volgroup-HollybSys00
          name: HollybSys00
          preserve: true
          type: lvm_volgroup
      -   id: lvm-partition-root
          name: root
          preserve: true
          size: 99996401664B
          type: lvm_partition
          volgroup: lvm-volgroup-HollybSys00
          wipe: superblock

  ============================================

  === snippet from curtin log ===

  Running command ['vgchange', '--activate=y'] with allowed return codes [0] (capture=True)
            3 logical volume(s) in volume group "HolidaySys00-old" now active
            3 logical volume(s) in volume group "HolidaySys00" now active
            3 logical volume(s) in volume group "HollybSys00" now active
          
          Running command ['pvdisplay', '-C', '--separator', '=', '--noheadings', '-o', 'vg_name,pv_name'] with allowed return codes [0] (capture=True)
          Verifying lvm volgroup HollybSys00 members, expected {'/dev/nvme0n1p3'}, found {'/dev/nvme0n1p3'} 
          lvm_volgroup HollybSys00 already present, skipping create
          Running command ['pvscan'] with allowed return codes [0] (capture=True)
          Running command ['vgscan'] with allowed return codes [0] (capture=True)
          finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: SUCCESS: configuring lvm_volgroup: lvm-volgroup-HollybSys00
          start: cmd-install/stage-partitioning/builtin/cmd-block-meta: configuring lvm_partition: lvm-partition-root
          Running command ['lvdisplay', '-C', '--separator', '=', '--noheadings', '-o', 'vg_name,lv_name'] with allowed return codes [0] (capture=True)
          Verifying root logical volume is in HollybSys00 volume group, found ['root', 'scratch', 'swap'] 
          Running command ['lvdisplay', '-C', '--separator', '=', '--noheadings', '-o', 'lv_name,lv_size', '--units=B'] with allowed return codes [0] (capture=True)
          Verifying root logical value is size bytes 99996401664, found 86973087744 
          An error occured handling 'lvm-partition-root': RuntimeError - Verifying root logical value is size bytes 99996401664, found 86973087744 
          finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: configuring lvm_partition: lvm-partition-root

  
  ============================================

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