Spontaneous reboot

[tv1968]

Hi,

I've been using FreeNAS for quite a while now and ran into an issue where the system (busy nfs maildir storage) suddenly rebooted.

It happened again a while later and after opening ipmi console I was able to capture the following:

It generated a lot of these messages and then rebooted the server.

It is a driver message for the Intel 710 controller (2x 10GB LACP connected) but I find no search result of someone running into this issue.

I've tuned down vfs.zfs.arc_max to leave more memory but I'm not familiar enough with FreeBSD to know if this would help.
I found some settings with regards to network buffers and maybe these need to be adjusted to prevent the memory starvation.

The system in question is running FreeNAS 11.2 release.

If this question is better asked on a FreeBSD forum or additional information is neccessary please let me know.
Thanks for any insight you can give me.

Regards,

Ton

 

[Samuel Tai]

This is a driver bug, and should be raised with the FreeBSD developers. If you browse the driver source at https://github.com/freebsd/freebsd/tree/master/sys/dev/ixl, you'll see the driver allocates a fixed 4K for the admin queue. In your case, there's something triggering events faster than the driver can bail out the queue.