Openshift nodes with multipath attached root disk

Solution Verified - Updated -

Issue

  • I've migrated some nodes from M4 AWS instances to M5. Since this change, some of the nodes have a multipath attached root disk, which causes the Grub install to fail.

    • Single-path device:

      nvme0n1       259:0    0  450G  0 disk 
      ├─nvme0n1p1   259:1    0  512K  0 part 
      ├─nvme0n1p2   259:2    0   20G  0 part /
      
    • Multipath device:

      nvme0n1         259:0    0  450G  0 disk  
      └─mpatha        253:0    0  450G  0 mpath 
        ├─mpatha1     253:1    0  512K  0 part  
        ├─mpatha2     253:2    0   20G  0 part  /
      

Environment

  • Openshift Container Platform (OCP) 3.X

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