[Bug 1570580] Comment bridged from LTC Bugzilla

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------- Comment From ROESCH3 at de.ibm.com 2016-08-29 10:38 EDT-------
(In reply to comment #7)
> In Ubuntu and Debian, in general we do not activate existing volume groups
> and volumes, because the idea is that in general one installs things afresh
> and doesn't reuse/resize existing things. Especially not LVM groups. We even
> opportunistically wipe lvm metadata off the drives before guided full disk
> install.
>
> There is no current support in e.g. debian and ubuntu, to reuse lvm groups
> and volumes per se.

Could you point me to where this behaviour is documented? I was
researching but could not find anything

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https://bugs.launchpad.net/bugs/1570580

Title:
  Existing Logical Volumes on multipathed SCSI disks are not
  automatically activated during installation

Status in Ubuntu on IBM z Systems:
  Incomplete
Status in debian-installer package in Ubuntu:
  Incomplete

Bug description:
  Installer version: 447
  Kernel: 4.4.0.18
  Description/Reproduction:
  Logical Volumes that exist on multipathed SCSI disks from a previous installation are not automatically activated and thus can not be reused. Only the partitions are visible and that their type is "lvm" (s. screenshot). 

  Workaround:

  When the partitioned disks are shown in the "Partition disks" menu,
  open a shell. Then list all logical volumes with command lvs, and set
  each logical volume active with lvchange -ay
  <volumegroupname>/<lvolname>. Choose "Configure the Logical Volume
  Manager", confirm keeping current partition layout with "Yes"  and
  "Finish" without changing anything. Then the Logical Volumes are
  displayed in the "Partition disks" menu and filesystems can be created
  and mountpoints defined.

  I will attach syslog and partman of the installation attempt.

  So obviously an lvchange -ay on all detected lolgical volumes is
  missing at the proper time....

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