[#LU-9667] LNet Kernel/Userspace Interface

[LU-9667] LNet Kernel/Userspace Interface Created: 14/Jun/17 Updated: 06/Dec/20
Status:	Open
Project:	Lustre
Component/s:	None
Affects Version/s:	None
Fix Version/s:	None

Type:

New Feature

Priority:

Minor

Reporter:

Sonia Sharma (Inactive)

Assignee:

Sonia Sharma (Inactive)

Resolution:

Unresolved

Votes:

Labels:

None

Issue Links:

Blocker
is blocked by	LU-12312	sanity-sec: test_31: 'network' mount ...	Reopened
Gantt End to End
has to be finished together with	LUDOC-437	LNet Kernel/Userspace Interface Docum...	Open
Related
is related to	LU-5960	Add ability to get peer and connectio...	Open
is related to	LU-8066	Move lustre procfs handling to sysfs ...	Open
is related to	LU-10756	Send Uevents for interesting Lustre c...	Open
is related to	LU-9680	Improve the user land to kernel space...	In Progress

Rank (Obsolete):

9223372036854775807

Description

LNetCtl commands are used to pull information from LNet and display them in YAML format.

Also a decision is made to use sysfs for pulling simple key/value pair related information rom kernel and IOCTL for more complex operations. So the new LNetCtl commands will be added based on this.

This ticket will track the progress on adding the sysfs infrastructure and the new LNetCtl commands.

Comments

Comment by James A Simmons [ 14/Jun/17 ]

Besides the sysfs work one of the things asked by the linux kernel maintainers is to look to moving from ioctls to the netlink api. I have started to explore this avenue.

Comment by James A Simmons [ 20/Jun/17 ]

l looked over your document. I don't think you mean for your stats files to all module parameters do you? You will instead need to create

/sys/fs/lnet/...

A nice effect of having /sys/fs/lnet/ko2inlnd is that we can link in the tunables that are module parameters as well.

Comment by Amir Shehata (Inactive) [ 20/Jun/17 ]

James, thanks. I'll update the doc. I'm looking into a way of making the wiki document public, so that it's easier for changes to be visible outside Intel.

Comment by Amir Shehata (Inactive) [ 23/Jun/17 ]

James, Olaf, the Sysfs Requirements doc has been updated. It's now accessible from here:
https://wiki.hpdd.intel.com/pages/viewpage.action?pageId=65700164

You should be able to add comments. The doc should be available for anonymous access as well.

Comment by Gerrit Updater [ 22/Sep/17 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/29163
Subject: LU-9667 lnet: Generic helper functions for sysfs
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 8a82599e69f5ee2531f050710b444bff3114105c

Comment by Gerrit Updater [ 22/Sep/17 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/29164
Subject: LU-9667 lnet: Add o2iblnd peer sysfs structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 78fdcd0331028fc5e88b1962ff8f9682c9fe829a

Comment by Gerrit Updater [ 06/Oct/17 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/29353
Subject: LU-9667 lnet: Userspace control show lnd peer structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 2604b6f799b1c4a38ec559de0fb877330f5b6a5d

Comment by Gerrit Updater [ 07/Feb/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/31213
Subject: LU-9667 lnet: Userspace control show lnd peer structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: b095e8d013f95f482aba593866e0d9364721e75f

Comment by Gerrit Updater [ 03/Mar/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/31503
Subject: LU-9667 lnet: Add o2iblnd connections sysfs structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 24cbcf492a3820ef457b7f6e6aa83a4eb97f8ffb

Comment by Gerrit Updater [ 15/Mar/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/31653
Subject: LU-9667 lnet: Userspace control to show lnd connections
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: db4c64d7e0a4f0503601023512dadb2ebf523856

Comment by Gerrit Updater [ 22/Mar/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/31744
Subject: LU-9667 lnet: Add LNet net sysfs structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: e8a7cae5890df6496c0f448bd4c5b32c7093c86c

Comment by Gerrit Updater [ 30/May/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/32579
Subject: LU-9667 lnet: Add LNet peer sysfs structure
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 45101d4cc68222af27468b1c3cd233544582bafd

Comment by Gerrit Updater [ 08/Jun/18 ]

Sonia Sharma (sonia.sharma@intel.com) uploaded a new patch: https://review.whamcloud.com/32664
Subject: LU-9667 lnet: Add new structs for sysfs LND APIs
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: cf71d6d3fba744d771cc534bcff4f08784600614

Comment by Gerrit Updater [ 05/Jul/18 ]

Sonia Sharma (sharmaso@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/32786
Subject: LU-9667 lnet: Userspace control to show lnet ni stats
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 712be994a4b4ca057d67ed63013d4260b1900c69

Comment by Gerrit Updater [ 22/Oct/18 ]

Sonia Sharma (sharmaso@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/33421
Subject: LU-9667 lnet: Userspace control to show lnd conn stats
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: b029af4ee79aa73c3457e9d973184067c7c06518

Comment by Gerrit Updater [ 05/Nov/18 ]

Sonia Sharma (sharmaso@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/33583
Subject: LU-9667 lnet: Add default network interface if not provided
Project: fs/lustre-release
Branch: lnet-sysfs
Current Patch Set: 1
Commit: 2bfeee24fb39e0979c12fa91ddb4cb3ecf84bfd2