[OmniOS-discuss] omnios host goes suddenly silent on the network

[Tobias Oetiker]

Folks,

I am runnning omnios OmniOS 5.11     omnios-8d266aa  2013.05.04 on
a box where we server zfs storage space and also run a few kvm
hosts.

Over the last few days, omnios has intermittently become 'mute' on
its network interface. Not answering to tcp or icmp requests.

Connecting via the console shows that the host is otherwhise fine,
it just can not talk over the network anymore.

Normally the condition cleared after a few minutes.

The kernel does not write anything into the log file (running with
*.debug /var/log/debug.log)

Whats more, the virtual machines running on the machine, talking
over the same physical network interface continue their work
unperturbed. With network connectivity and all ... but they also
can not talk to the omnios server via the network.

I have the following network setup

oot at fugu:~# dladm show-link
LINK        CLASS     MTU    STATE    BRIDGE     OVER
igb0        phys      1500   up       --         --
igb1        phys      1500   up       --         --
igb2        phys      1500   unknown  --         --
igb3        phys      1500   unknown  --         --
akami0      vnic      1500   up       --         igb0
nigiri0     vnic      1500   up       --         igb0
fugu0       vnic      1500   up       --         igb0
fugu1       vnic      1500   up       --         igb1

the interfaces akami0 and nigiri0 are assigned to two kvm hosts
fugu0 is used by the omnios host and fugu1 is a direct link to a
second omnios host for zfs send receive backups.

anyone seem such a behaviour ?
any debugging ideas ?

cheers
tobi
-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900