[LU-7578] Push latest gnilnd changes

• Type: Task
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.8.0
• Assignee: Chris Horn
• Reporter: Chris Horn

Description

There have been a few gnilnd changes since the last time we sync'd up. I'll be pushing up the latest commits.

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/17663/
Subject: LU-7578 gnilnd: Modify allocator flags to prevent waiting
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 4e7994f45811e66f50a5d174b1b5dfc20c65269b

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/17667/
Subject: LU-7578 gnilnd: Revert max_immediate setting
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 928c5050f7d2a8a2cabb6eeb3993b29166fdaf1e

[James A Simmons]

Just did another round of testing and I didn't see problems this time. Strange some unrelated change must of landed that fix the problem the latest Gemini changes must of been exposing.

[Chuck Fossen]

James, are you saying that gnilnd is now using more memory or that allocations are failing when the node is under high memory pressure?
Also, I assume this is on compute nodes that you are seeing this issue. Is that true?
I don't see that these changes would cause gnilnd to use more memory.
http://review.whamcloud.com/17663 changed the vmalloc allocation flags so an allocation will fail instead of waiting forever to allocate memory.
We have seen heartbeat failures when a node needs to allocate memory to establish a connection in the case where Lustre is trying to write to disk in order to free memory.

[Chris Horn]

James, I've passed along your comments to our gnilnd engineers and asked them to weigh in on this ticket.

[James A Simmons]

Chris one of these patches is causing a regression in my testing. I'm seeing an increase in memory pressure that is causing jobs to fail under pressure.

[Gerrit Updater]

Chris Horn ([e-mail]) uploaded a new patch: http://review.whamcloud.com/17667
Subject: LU-7578 gnilnd: Revert max_immediate setting
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: a382968a06574400bd48e2e0beb848ad1ba81304

[Gerrit Updater]

Chris Horn ([e-mail]) uploaded a new patch: http://review.whamcloud.com/17666
Subject: LU-7578 gnilnd: Return correct error on GNI_RC_ERROR_NOMEM
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: b2d35706d02c0cf16ef404f865211e7fde14cfb1

[Gerrit Updater]

Chris Horn ([e-mail]) uploaded a new patch: http://review.whamcloud.com/17665
Subject: LU-7578 gnilnd: Handle new return code in gni_mem_register()
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 237a4857ae42ef2fb569664a1e5f24398ae53687

[Gerrit Updater]

Chris Horn ([e-mail]) uploaded a new patch: http://review.whamcloud.com/17664
Subject: LU-7578 gnilnd: Add module parameter reg_fail_timeout
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: a1909655ff47f5276ca789dad6e88b6bc167fd3f

[Gerrit Updater]

Chris Horn ([e-mail]) uploaded a new patch: http://review.whamcloud.com/17663
Subject: LU-7578 gnilnd: Modify allocator flags to prevent waiting
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: d172877a683e8f0a980265c96edccf8f214fd674