[SRU][22.04.4]: megaraid_sas: Critical Bug Fixes

[Chandrakanth Patil]

[Impact]

This update has been initiated to include a few critical bug fixes from upstream into the upcoming 22.04.04 point kernel. Below are the upstream commit IDs:

[Fix]
0938f9fa4208 scsi: megaraid_sas: Driver version update to 07.727.03.00-rc1
2d83fb023c90 scsi: megaraid_sas: Log message when controller reset is requested but not issued

The change log for the above commit IDs is small and doesn't require rigorous validation. So please include these patches.

[Test Plan]

1. Driver load and unload
2. Create and delete different virtual drives (R0, R1, R5 etc.,)
3. create JBOD
4. Run IOs with different profiles (io_depth, io_size etc.,) on VD and JBOD
5. controller reset while running IOs

[ Where problems could occur ]
It has a critical patch which fixes the issue related to various register reads. So IO runs and various internal commands where problems could occur
[ Other Info ]

Jammy
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2046722_megaraid_sas_update

Mantic
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/mantic/+ref/lp_2046722_megaraid_sas_update

Noble
These patches are already in Noble

[Chandrakanth Patil (cpatubuntu)]

Hi Jeff and Roxana,

These bugs are critical for us, and I don't see any update here. I would like to know where are we on this. will these patches be included in this point kernel?

[Jeff Lane  (bladernr)]

We will work on these this next week and shoot for the next SRU for 6.5.

[Chandrakanth Patil (cpatubuntu)]

Thank you, Jeff. These patches are very important so if you need any support from our end please let us know. Btw, when will this point kernel be released?

[Michael Reed (mreed8855)]

I have created tests kernels for both Jammy and Mantic. Please test and provide feedback.

Jammy
https://people.canonical.com/~mreed/misc/lp_2046722_megaraid_sas_update/jammy/

Mantic
https://people.canonical.com/~mreed/misc/lp_2046722_megaraid_sas_update/mantic/

[Michael Reed (mreed8855)]

Hi Chandrakanth,

Can you also fill in these fields for the SRU process in addition to testing the test kernels

[Test Plan]

[ Where problems could occur ]

[ Other Info ]

[Michael Reed (mreed8855)]

These patches are already in 6.8

[Chandrakanth Patil (cpatubuntu)]

I have covered the validation and it looks fine. Thank you for the support.

[Michael Reed (mreed8855)]

Hi Chandrakanth,

Thank you for testing the test kernels. Can you also fill in these fields for the SRU process? I need that information when submitting these to the mailing list.

[Test Plan]

[ Where problems could occur ]

[ Other Info ]

[Chandrakanth Patil (cpatubuntu)]

Hi Michael,

[Test Plan]

1. Driver load and unload
2. Create and delete different virtual drives (R0, R1, R5 etc.,)
3. create JBOD
4. Run IOs with different profiles (io_depth, io_size etc.,) on VD and JBOD
5. controller reset while running IOs

[ Where problems could occur ]
It has a critical patch which fixes the issue related to various register reads. So IO runs and various internal commands where problems could occur

[ Other Info ]
This patchset is small so we don't have any other info.

[Michael Reed (mreed8855)]

Hi Chandrakanth,

Thank you for filing is the requested fields. I have one more request, can you also add what the regression risk will be? This will be included under [ Where problems could occur ].

Thanks,
Michael

[Michael Reed (mreed8855)]

These 4 patches are already in Noble, Mantic and Jammy.

8e3ed9e78651 scsi: megaraid_sas: Increase register read retry count from 3 to 30 for selected registers
0b0747d507bf scsi: megaraid_sas: Fix deadlock on firmware crashdump
2309df27111a scsi: megaraid_sas: Fix crash after a double completion
0808ed6ebbc2 scsi: megaraid_sas: Fix fw_crash_buffer_show()