Dump tool version dependencies

Use dump tools with multithreading support for Linux® instances that run on LPARs with enabled multithreading.

Table 1 shows how you can verify the version of the different tools.

Table 1. Tool versions for multithreading
Dump tool	Your tools support multithreading if:
DASD dump tool Tape dump tool	The command `zipl -v` displays a version of 1.30.0 or later, and the command `zgetdump -d <dump device>` displays either the extended dump tool or a dump tool version of 4 or later.
SCSI dump tool	The Linux kernel that is used for the SCSI dump tool is version 4.0 or later.
NVMe dump tool	All versions of the NVMe dump tool support multithreading.
kdump	The kdump kernel version is 4.0 or later.

Attention: If you must IPL a Linux kernel with a version earlier than 4.0 on an LPAR that has previously run with multithreading enabled, use IPL clear. Otherwise any memory dumps that you create for this Linux kernel might be flawed.