[elrepo] mpt3sas driver

[Roman Serbski]

On Tue, Mar 8, 2016 at 8:29 PM, Phil Perry <phil at elrepo.org> wrote:
>
> Great work.
>
> OK, I've had a look at the native 3.10 kernel driver versus the driver in
> RHEL 7.2, and clearly RH have already backported a lot of patches to this
> driver since the native 3.10 kernel driver in RHEL7.0.
>
> Thus I've taken the latest RHEL 7.2 driver from kernel-3.10.0-327.10.1.el7
> and applied the above 2 patches. This will be available in the elrepo
> testing repository shortly as:
>
> kmod-mpt3sas-0.0-1.el7.elrepo.x86_64.rpm
> mpt3sas-kmod-0.0-1.el7.elrepo.src.rpm
>
> To install, please do:
>
> yum --enablerepo=elrepo-testing kmod-mpt3sas
>
> and reboot
>
> Then please test as you see fit to see if it fixes your problem. You should
> be able to confirm the new driver is running by running 'modinfo mpt3sas'
> and looking at the path in the filename field. Simply uninstall the kmod and
> reboot to switch back to the native driver.
>
> Regards,
>
> Phil

Bingo, I think it worked -- many thanks Phil!

After several reboots scsi labeling is still consistent and no more
"device is not present" errors.  I also believe I'm using the right
mpt3sas driver, since the signer is ELRepo:

$ modinfo mpt3sas
filename:       /lib/modules/3.10.0-327.el7.x86_64/extra/mpt3sas/mpt3sas.ko
version:        04.100.00.00
license:        GPL
description:    LSI MPT Fusion SAS 3.0 Device Driver
author:         Avago Technologies <MPT-FusionLinux.pdl at avagotech.com>
rhelversion:    7.2
srcversion:     1D1320B925944F640273074
alias:          pci:v00001000d00000095sv*sd*bc*sc*i*
alias:          pci:v00001000d00000094sv*sd*bc*sc*i*
alias:          pci:v00001000d00000091sv*sd*bc*sc*i*
alias:          pci:v00001000d00000090sv*sd*bc*sc*i*
alias:          pci:v00001000d00000097sv*sd*bc*sc*i*
alias:          pci:v00001000d00000096sv*sd*bc*sc*i*
depends:        scsi_transport_sas,raid_class
vermagic:       3.10.0-327.el7.x86_64 SMP mod_unload modversions
signer:         The ELRepo Project (http://elrepo.org): ELRepo.org
Secure Boot Key
sig_key:        F3:65:AD:34:81:A7:B2:0E:34:27:B6:1B:2A:26:63:5B:83:FE:42:7B
sig_hashalgo:   sha256
parm:           logging_level: bits for enabling additional logging
info (default=0)
parm:           max_sectors:max sectors, range 64 to 32767
default=32767 (ushort)
parm:           missing_delay: device missing delay , io missing delay
(array of int)
parm:           max_lun: max lun, default=16895  (int)
parm:           diag_buffer_enable: post diag buffers
(TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0) (int)
parm:           disable_discovery: disable discovery  (int)
parm:           prot_mask: host protection capabilities mask, def=7  (int)
parm:           max_queue_depth: max controller queue depth  (int)
parm:           max_sgl_entries: max sg entries  (int)
parm:           msix_disable: disable msix routed interrupts (default=0) (int)
parm:           max_msix_vectors: max msix vectors - (default=8) (int)
parm:           mpt3sas_fwfault_debug: enable detection of firmware
fault and halt firmware - (default=0)

I do get one error (warning?) at the very start of mpt3sas driver
loading, but I guess it could be ignored?

[    3.592801] mpt3sas: module verification failed: signature and/or
required key missing - tainting kernel

If I manage to convince Red Hat to fix it, will it be automatically
transferred to CentOS or I will have to ask CentOS separately (I do
have bugs raised with both)?

Again, many thanks for your time and efforts, especially for guiding
me in the right direction!