4.6.4 Kdump runs out of memory when attempting to mount /sysroot on FC disks that use LVM

An issue in Oracle Linux 8 causes Kdump to run our of memory if you attempt to mount /sysroot on a Fibre Channel (FC) disk that uses the Logical Volume Manager (LVM). This issue is due to a lack of memory when the crashkernel loads.

To resolve the issue, you can do one of the following:

  • Override the crashkernel=auto boot option so that more memory is reserved for Kdump. For example, set the kernel boot parameter to crashkernel=512M.

  • Set the Kdump destination to a network location (NFS or SSH).

(Bug ID 29840266)