Re: [lustre-discuss] OST not being used

2021-06-23 Thread Alastair Basden

Hi Megan,

Thanks - yes, lctl ping responds.

In the end, we did a writeconf, and this seems to have fixed the problem, 
so probably some previous transient.  I would however have expected it to 
heal whilst online - taking the filesystem down and doing a writeconf 
seems a bit drastic!


Cheers,
Alastair.

On Wed, 23 Jun 2021, Ms. Megan Larko via lustre-discuss wrote:


[EXTERNAL EMAIL]
Hi!

Does the NIC on the OSS that serves OST 4-7 respond to an lctl ping? 
You indicated that it does respond to regular ping, ssh, etc.  I would 
review my /etc/lnet.conf file for the behavior of a NIC that times out. 
Does the conf allow for asymmetrical routing?  (Is that what you wish?) 
Is there only one path to those OSTs or is there a way failover NIC 
address that did not work in this even for some reason?


The Lustre Operations Manual Section 9.1 on lnetctl command shows how you can 
get more info on the NIC ( lnetctl show...)

Good luck.
megan


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[lustre-discuss] OST not being used

2021-06-23 Thread Ms. Megan Larko via lustre-discuss
Hi!

Does the NIC on the OSS that serves OST 4-7 respond to an lctl ping?   You
indicated that it does respond to regular ping, ssh, etc. I would
review my /etc/lnet.conf file for the behavior of a  NIC that times out.
Does the conf allow for asymmetrical routing?  (Is that what you wish?)  Is
there only one path to those OSTs or is there a way failover NIC address
that did not work in this even for some reason?

The Lustre Operations Manual Section 9.1 on lnetctl command shows how you
can get more info on the NIC ( lnetctl show...)

Good luck.
megan
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