(Re-sending my response to the list)
Yes, I believe that there are cases when problems on a remote node can be
interpreted as local failures.
From: "nathan.dau...@noaa.gov" <nathan.dau...@noaa.gov>
Date: Sunday, March 8, 2020 at 3:56 AM
To: Chris Horn <ho...@cray.com>, "lustre-discuss@lists.lustre.org"
<lustre-discuss@lists.lustre.org>
Cc: "nathan.dau...@noaa.gov" <nathan.dau...@noaa.gov>
Subject: Re: [lustre-discuss] lnet_peer_ni_add_to_recoveryq
Resent-From: <ho...@cray.com>
Resent-Date: Sunday, March 8, 2020 at 4:56 AM
Chris, all,
We are also seeing similar messages primarily on our servers, but from
lnet_handle_local_failure() instead. I don't find any issues with the local
o2ib interfere, yet, but there _may_ be a correlation with a client hang. Could
this also be caused on a server by remote network problems or a client dropping
out, in spite of the "local" name?
Thanks,
Nathan
On Mar 6, 2020 1:10 PM, Chris Horn <ho...@cray.com> wrote:
> lneterror: 10164:0:(peer.c:3451:lnet_peer_ni_add_to_recoveryq_locked())
> lpni <address> added to recovery queue. Health = 900
The message means that the health value of a remote peer interface has been
decremented, and as a result, the interface has been put into recovery mode.
This mechanism is part of the LNet health feature.
Health values are decremented when a PUT or GET fails. Usually there are other
messages in the log that can tell you more about the specific failure.
Depending on your network type you should probably see messages from socklnd or
o2iblnd. Network congestion could certainly lead to message timeouts, which
would in turn result in interfaces being placed into recovery mode.
Chris Horn
On 3/6/20, 8:59 AM, "lustre-discuss on behalf of Michael Di Domenico"
<lustre-discuss-boun...@lists.lustre.org on behalf of mdidomeni...@gmail.com>
wrote:
along the aforementioned error i also see these at the same time
lustreerror: 9675:0:(obd_config.c:1428:class_modify_config())
<...>-clilov-<...>; failed to send uevent qos_threshold_rr=100
On Fri, Mar 6, 2020 at 9:39 AM Michael Di Domenico
<mdidomeni...@gmail.com> wrote:
>
> On Fri, Mar 6, 2020 at 9:36 AM Degremont, Aurelien <degre...@amazon.com>
wrote:
> >
> > Did you see any actual error on your system?
> >
> > Because there is a patch that is just decreasing the verbosity level of
such messages, which looks like could be ignored.
> >
https://urldefense.proofpoint.com/v2/url?u=https-3A__jira.whamcloud.com_browse_LU-2D13071&d=DwICAg&c=C5b8zRQO1miGmBeVZ2LFWg&r=hIaFpo9yRyCwkkAs6y0c7W-QqT7uZMMSOkAIByhcA-I&m=ByOR33WN61jv0rEVZTtNhUgN313iSqbgrdfakY-TAjc&s=jp8DpDcylEQYlbd9-s3efysfDy2KdLvBrptsplqR1ks&e=
> >
https://urldefense.proofpoint.com/v2/url?u=https-3A__review.whamcloud.com_-23_c_37718_&d=DwICAg&c=C5b8zRQO1miGmBeVZ2LFWg&r=hIaFpo9yRyCwkkAs6y0c7W-QqT7uZMMSOkAIByhcA-I&m=ByOR33WN61jv0rEVZTtNhUgN313iSqbgrdfakY-TAjc&s=8EUQ5wHRCuFFbd4PKxQCnTB_L9IgffvkzFw4_v6MEHg&e=
>
> thanks. it's not entirely clear just yet. i'm trying to track down a
> "slow jobs" issue. i see these messages everywhere, so it might be a
> non issue or a sign of something more pressing.
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