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

[Matthias Klose]

$ sudo nvme list
Node             SN                   Model                                    Namespace Usage                      Format           FW Rev  
---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme0n1     202382840001300528DE Force MP600                              1           1.00  TB /   1.00  TB    512   B +  0 B   EGFM11.3
/dev/nvme1n1     7QH007NY             Seagate FireCuda 520 SSD ZP2000GM30002   1           2.00  TB /   2.00  TB    512   B +  0 B   STNSC014
/dev/nvme2n1     202382840001300528EF Force MP600                              1           1.00  TB /   1.00  TB    512   B +  0 B   EGFM11.3

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https://bugs.launchpad.net/bugs/1902855

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

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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