[lustre-devel] adding IOCTL for ping

[Ben Evans]

Nope, looks like I was missing something, I wasn¹t terribly familiar with
pingless clients and the external health networks.  Reading up on those
now.

-Ben

On 9/21/15, 5:41 AM, "Dilger, Andreas" <andreas.dilger at intel.com> wrote:

>Maybe I'm missing something here, but why not disable pinging altogether
>at this point and depend on the external health network? That is already
>possible today via https://jira.hpdd.intel.com/browse/LU-2467.
>
>Cheers, Andreas
>
>On Sep 15, 2015, at 17:05, Ben Evans
><bevans at cray.com<mailto:bevans at cray.com>> wrote:
>
>Would there be any interest in adding an IOCTL to update the ping
>time/status for a particular NID?
>
>This should allow for implementation of a pinger in userspace which
>updates the kernel on the status of various NIDs, and if I understand the
>ping code well enough, would greatly curtail any pings that is sent by
>the kernel.
>
>This might allow for things like Eric¹s gossip implementation to simply
>bolt on top of Lustre without any internal kernel changes, or for
>integration of external monitoring systems to tell Lustre that failovers
>have occurred, etc.
>
>-Ben Evans
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