[Bug 1723541] Re: zVM 17.10 install: LVM installation results in IPL UNIT ERROR

[ChristianEhrhardt]

Hmm,
just failed me today - we need to sort out if that was an old installer or if my case is slightly different.
- I had 2 mod54 dasds.
- Both were never used, so I let the installer do the dasdfmt.
- used guided lvm setup to use all space on each disk
- created a single VG with both disks in it
- one logical volume 80G for root
- one 6G for swap
- in the FS view assigining / and swap accordingly
- On the "zipl" step this failed (didn't show me extra details)

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Title:
  zVM 17.10 install: LVM installation results in IPL UNIT ERROR

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in s390-tools package in Ubuntu:
  Fix Released
Status in s390-tools source package in Artful:
  Fix Released

Bug description:
  [Impact]

  zipl uses zipl_helper.device-mapper helper perl script to determine underlying device geometry/layout to create the bootmap records, when rootfs is on LVM / multipath devices.
  That script calls dasdview to get the geometry of the DASD drives using deprecated -f options, which is now redundant given that device argument is now simply positional and required. With that flag, dasdview now exits with failure and the zipl_helper.device-mapper tool uses incorrect built-in fallback defaults, which are most likely wrong.

  Without this fix installing onto multipath devices, or root on LVM
  (default) is not possible.


  If 'use entire disk and set up LVM' is selected during installation of
  a zVM guest, the system fails to IPL with the error:

  LOGON GENRL04
  00: z/VM Version 6 Release 4.0, Service Level 1701 (64-bit),
  00: built on IBM Virtualization Technology
  00: There is no logmsg data
  00: FILES: 0004 RDR,   NO PRT,   NO PUN
  00: LOGON AT 12:12:16 EST FRIDAY 10/13/17
  00: Command complete
  00: Command complete
  00: NIC 0600 is created; devices 0600-0602 defined
  00: NIC 0600 is connected to VSWITCH SYSTEM VSW1
  HCPVMI232E IPL UNIT ERROR; IRB 00404017 00000010 00200000 00800000
  00: HCPGIR450W CP entered; disabled wait PSW 000E0000 00000232

  DASD devices were configured in this instance.
  The error is not seen when non-LVM partitioning is selected (e.g. User entire disk).

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