[OpenIndiana-discuss] Network device config problem

[Udo Grabowski (IMK)]

On 21/02/2014 11:48, Udo Grabowski (IMK) wrote:
> Hi,
> we have strange problems on oi 151a7 with network device management.
> On our X4540 thumper boxes, the onboard e1000g* network entries are
> sometimes randomly overwritten by net* entries (machine had crashed
> before), which cannot be removed and block the use of the original
> device entries (trying to add it back to the aggregation aggr1 where
> it originally belongs to). Tried to modify /etc/dladm/datalink.conf,
> but net0 gets readded, and /dev/net/net0 stays, e1000g0 does not
> appear there. Tried to move net0 to e1000g0, but, expectedly, this
> caused havoc... We have network/physical:default active, but it looks
> like nwam is somehow interferring, although completely disabled in
> SVM. /etc/path_to_inst entries go to the correct /devices/ links,
> all /dev/e1000g* are correct, all link targets are there with the
> correct major/minor entries. Tried datalink-management restart
> after modifications, reboot etc., no change.
>
> What's going on here ? Where do the net* entries come from ?
> Where they are permanently recorded ?
> .....

It seems this spreads like a pest, all our machines now have
the one or other physical link randomly overlayed by a net*
device, and those original devices do no longer function in
the aggregates, I've to remove them from the aggr and add
those net* instead.

I cannot remove or rename the old links and move the net
devices to their original hardware device name, nor do I
have the tools and knowledge to avoid them at all.

Any deeper insight into this, anyone ?

What's going on in a7, this seems to be a major bug in
network management ? Is this a bad side effect of having
moved to the ipadm management structure, but only in parts ?
Howto disable the generation of those net* links ?
-- 
Dr.Udo Grabowski    Inst.f.Meteorology a.Climate Research IMK-ASF-SAT
www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology            http://www.kit.edu
Postfach 3640,76021 Karlsruhe,Germany  T:(+49)721 608-26026 F:-926026