Hi Sid,
Notice that you are using lnetctl net add to add the lnet network, which
means you should be using a recent version of Lustre that depends on
/etc/lnet.conf for boot time lnet configuration.
You can save the current lnet configuration using command: lnetctl
export --backup > /etc/lnet.conf (make a backup of the original file
first if required)
On next boot, lnet.service will load your lnet configuration from the file.
Or you can manually build lnet.conf as lnetctl seems to have occasion
problems with some of the fields exported by "lnetctl export --backup"
Attaching my simple lnet.conf for your reference:
# cat /etc/lnet.conf
ip2nets:
- net-spec: o2ib
ip-range:
0: 10.2.8.*
- net-spec: tcp
ip-range:
0: 10.5.9.*
route:
- net: o2ib
gateway: 10.5.9.25@tcp
hop: -1
priority: 0
- net: o2ib
gateway: 10.5.9.24@tcp
hop: -1
priority: 0
global:
numa_range: 0
max_intf: 200
discovery: 1
drop_asym_route: 0
Best regards,
Angelos
On 23/02/2021 13:58, Sid Young via lustre-discuss wrote:
G'Day all,
I'm finding that when I reboot any node in our new HPC, I need to keep
manually adding the network using lnetctl net add --net tcp --if ens2f0
Then I can do an lnetctl net show and see the tcp part active...
I have options in /etc/modprobe.d/lnet.conf
options lnet networks=tcp
and
[root@hpc-oss-03 ~]# cat /etc/modprobe.d/lustre.conf
options lnet networks="tcp(ens2f0)"
options lnet ip2nets="tcp(ens2f0) 10.140.93.*
I've read the doco and tried to understand the correct parameters for
a simple Lustre config so this is what I worked out is needed... but I
suspect its still wrong.
Any help appreciated :)
Sid Young
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ClusterTech Limited
Tel : +852-2655-6138
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