Configure disk access retries when booting a VM on IBM POWER

Solution Verified - Updated -

Issue

The GRUB boot loader retries accessing disks 20 times when disk access fails at boot. This causes problems if you perform a Live Partition Mobility (LPM) migration on an logical partition (lpar) virtual machine (VM) that connects to slow Storage Area Network (SAN) disks. As a consequence, the boot might take very long on the VM until the 20 retries finish.

Environment

  • RHEL 8.7 and later
  • RHEL 9.1 and later
  • lpar VM on IBM POWER

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