[LU-7475] lnetctl import not honoring nbuffers, credits, or mincredits

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.7.0
• Environment: RHEL 6.6; lustre-client-2.7.1-2.6.32_504.30.3.el6.x86_64_g43f9fd9.x86_64
• Severity: 3
• Assignee: Amir Shehata (Inactive)
• Reporter: Jesse Hanley

Description

Using lnetctl import produces different results than using lnet module parameters.

Entry in lnet.conf modprobe file:

options lnet check_routers_before_use=1 \
             router_ping_timeout=130 \
             dead_router_check_interval=300 \
             live_router_check_interval=600\
             tiny_router_buffers=8192 \
             small_router_buffers=131072 \
             large_router_buffers=4096 \
             peer_buffer_credits=64

options lnet forwarding="enabled"

Will create the following setup:

# lnetctl routing show
routing:
    - cpt[0]:
          tiny:
              npages: 0
              nbuffers: 2048
              credits: 2048
              mincredits: 2048
          small:
              npages: 1
              nbuffers: 32768
              credits: 32768
              mincredits: 32768
          large:
              npages: 256
              nbuffers: 1024
              credits: 1024
              mincredits: 1024
......

But, specifying these parameters in /etc/sysconfig/lnet.conf does not. Entry in /etc/sysconfig/lnet.conf:

routing:
    - cpt[0]:
          tiny:
              npages: 0
              nbuffers: 2048
              credits: 2048
              mincredits: 2048
          small:
              npages: 1
              nbuffers: 32768
              credits: 32768
              mincredits: 32768
          large:
              npages: 256
              nbuffers: 1024
              credits: 1024
              mincredits: 1024

Result:

# lnetctl routing show
routing:
    - cpt[0]:
          tiny:
              npages: 0
              nbuffers: 512
              credits: 512
              mincredits: 512
          small:
              npages: 1
              nbuffers: 4096
              credits: 4096
              mincredits: 4096
          large:
              npages: 256
              nbuffers: 256
              credits: 256
              mincredits: 256
......

Are these settings not supported by lnetctl, or is using the module parameters still the preferred method?

Thanks!
–
Jesse