CONFIG_NVME_MULTIPATH - Do we need this?

[John Meneghini]

Now that RHEL-10 beta has shipped we no longer support anything but native nvme multi-pathing and I'd like to do something about 
the multipath module parameter:

bool multipath = true;
module_param(multipath, bool, 0444);
MODULE_PARM_DESC(multipath,
         "turn on native support for multiple controllers per subsystem");

I'd like to remove this parameter from nvme_core/multipath.c. The fact is, setting nvme_core.multipath=N never worked in 
anything but RHEL and keeping it around only causes confusion.

For that matter, I'd like to remove the CONFIG_NVME_MULTIPATH kconfig option altogether.

Does anybody actually use this?

# CONFIG_NVME_MULTIPATH is not set

Do we actually support running nvme without multipath.c ?

-- 
John A. Meneghini
Senior Principal Platform Storage Engineer
RHEL SST - Platform Storage Group
jmeneghi at redhat.com