.The Kdump system role works correctly when the kexec_crash_size file is busy The `/sys/kernel/kexec_crash_size` file provides the size of the memory region allocated for crash kernel memory. Previously, the Kdump system role failed when the `/sys/kernel/kexec_crash_size` file was busy. With this update, the system role retries reading the file when it is available. As a result, the system role no longer fails when the file is busy.