Xenserver 7 missing Nics after reboot

[Chris Missel]

 I have a Xenserver 7 running on approved hardware (HP DL380 G7).  Everything worked great.  Installed, added VMs and Pools.  Ethernet 4 ports configured.

 

Then after a reboot I had no nics for management! So I ran network reset from the console.  Two of the four showed back up the other two no such luck.  The show up in lspci but not in Xenserver.

 

 lspci -nn | grep Broad*

03:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet [14e4:1639] (rev 20)

03:00.1 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet [14e4:1639] (rev 20)

04:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet [14e4:1639] (rev 20)

04:00.1 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet [14e4:1639] (rev 20)

 

Any ideas how to add nics 3 of 4?

 

Thanks Chris

 

[Boby John1709155536]

HI Chris,

 

What happens when you do a xe pif-scan ? 

[Chris Missel]

Did scan.

#xe pif-scan host-uuid=1e8dca69-7ba3-4815-861e-c6971b02bf57

    then

#xe pif-list
uuid ( RO)                  : a45653b0-7b2c-20e0-2ee3-3917e5fee7f4
                device ( RO): eth0
    currently-attached ( RO): true
                  VLAN ( RO): -1
          network-uuid ( RO): 12866c50-d83d-9851-c626-b1e1541b3969


uuid ( RO)                  : f0211569-fc35-f3d8-174e-28c8cde66a5c
                device ( RO): eth1
    currently-attached ( RO): true
                  VLAN ( RO): -1
          network-uuid ( RO): 2830424b-ddf5-2867-3863-46042d26d4f2

 

Nic 3 and 4 are missing.

 

Checked passthrough -

# xl pci-assignable-list
0000:04:00.0
0000:04:00.1

They should not be.  Tried to  xl pci-assignable-remove, they remove but -r being used, "Couldn't find path for original driver; not rebinding" is output.

[Chris Missel]

Found an answer - wipe, reinstall Xenserver and restore VMs.  Just learning - so it was an exercise and one night long... But not bad.  Makes me question though - why a reboot seems to cause this to so many users, a bit disappointing.

 

Thanks for your help.

[Christoph Sinabell]

Hi,

 

The issue is still apparent with even the latest build and patch. What you can do is an Emergency Network Reset for example via xsconsole. This should avoid the need to reinstall. However if you have any problems with bonding on the particual host afterwards on the particular host it's always better to do a reinstall before playing around and damaging the whole pool network.

 

Regards

[Christoph Sinabell]

Or at least a pool eject for this host.

[Richard Davies1709155471]

I have the same issue which is now occurring since zen 7.0. The nics will either totally disappear or all go disconnected and have a label of “side” in front of them. 

I have determined that the issue has something to do with a bios setting as it is the only thing that could affect both onboard and add in NIC. I opened a ticket with Citrix to no avail. 

We moved to uefi bios machines and problems went away. I am still having the issue yesterday when I tried installing Other flavors of xen like xnp-Ng on older bios machines. 

[Alan Lantz]

I've never ran into this, a restart of XenServer shouldn't cause so much trouble ! 

I take it you are on either 7.1 LTSR or 7.6 with the latest nic drivers if those apply

to your hardware ?

 

--Alan--

 

[Richard Davies1709155471]

The nics are still shown as supported. The server is no longer. We have a rule that Xeon 56xx based servers go higher than xen 6.5. The new e5 series don’t seem to have an issue.  Even if we move the nic cards between the servers. 

I read another discussion which indicated that dell servers have an issue with the ipmi interface that causes this. I have done everything except disable the ipmi. 

I have some intel motherboards that have the same issue. So it could be chipset related or bios. 

[omerma]

On 3/17/2019 at 7:55 PM, Richard Davies1709155471 said:

The nics are still shown as supported. The server is no longer. We have a rule that Xeon 56xx based servers go higher than xen 6.5. The new e5 series don’t seem to have an issue.  Even if we move the nic cards between the servers. 

I read another discussion which indicated that dell servers have an issue with the ipmi interface that causes this. I have done everything except disable the ipmi. 

I have some intel motherboards that have the same issue. So it could be chipset related or bios. 

Hey
I have the same issue with Dell C6100, Xen 7.2.
same issue with network interface's label of “side” in front of them.
the uefi boot fixed it or you had to disable ipmi interface ?