[Bug 1902855] Re: two identical disks are only offered as a multipath device

[Michael Hudson-Doyle]

On Thu, 5 Nov 2020 at 21:35, Matthias Klose <1902855 at bugs.launchpad.net>
wrote:

> see also LP: #1871611, failing the install with disabled multipath.
>

That bug looked very much like the kernel losing its mind. Are you saying
you can reproduce it?


> However multipath is hard wired into the installer.
>

The intent is that what mulitpath-tools does on boot is reflected in the
installer. If it is disabled by kernel command line or whatever, the disks
should not be multipathed. It's possible this is not what happens, but it's
not by design.

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Title:
  two identical disks are only offered as a multipath device

Status in curtin package in Ubuntu:
  New
Status in multipath-tools package in Ubuntu:
  New
Status in probert package in Ubuntu:
  New
Status in subiquity package in Ubuntu:
  New
Status in curtin source package in Hirsute:
  New
Status in multipath-tools source package in Hirsute:
  New
Status in probert source package in Hirsute:
  New
Status in subiquity source package in Hirsute:
  New

Bug description:
  two identical SSDs are only offered as a multipath device in the
  server installer, not as single devices. The install succeeds, however
  the following boot falls back to the initramfs because the volume
  group cannot be found. Same hardware configuration as in LP: #1902845.

  blacklisting the dm_multipath module on the installer boot,  shows the
  two disks, however the installer later fails because the multipath and
  multipathd commands fail.

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