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Sun Storage 7000 Unified Storage System: Changing MTU of existing network interfaces causes them to go into 'maintenance' state (Doc ID 1558636.1)

Last updated on JULY 31, 2018

Applies to:

Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]
Sun Storage 7110 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7210 Unified Storage System - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

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The customer attempted to set the MTU parameter to 9000.

When we set the value to 9000 following happens :

 1. Instead of green light we see orange LED on data links in the BUI

 2. System complains about network settings

 3. We still can use the datalink and interface BUT:

      - IPMP does not seem to work
      - No decrease in TCP packets
      - BUI/CLI hangs , transfers slow down when a load is applied to the system through those links

Alerts

Hostname: NASsrv
Product Type: SUN ZFS STORAGE 7420
Summary: %fault-list[0].svc-string is unavailable.

Service failed.

Service svc: /appliance/kit/network/datalink:ixgbe2 failed - a start, stop or ref
Full Description: Service svc:/appliance/kit/network/datalink:ixgbe2 failed - a start, stop or refresh method failed.
Event-ID: 41286bad-b107-60df-97cd-ddb41d796834
Auto-Response: None
Impact: None
Rec-Action: None
Software Component:
Name: svc:///appliance/kit/network/datalink:ixgbe2


BUI 'problems'

NASsrv:> maintenance problems show
Problems:

COMPONENT             DIAGNOSED TYPE  DESCRIPTION
problem-000 2013-4-12 06:16:19  Major Defect Service
svc:/appliance/kit/network/datalink:ixgbe1
failed - a start, stop or
refresh method failed.

problem-001 2013-4-12 06:16:19  Major Defect Service
svc:/appliance/kit/network/datalink:ixgbe2
failed - a start, stop or
refresh method failed.

problem-002 2013-4-12 06:16:20  Major Defect Service
svc:/appliance/kit/network/datalink:ixgbe3
failed - a start, stop or
refresh method failed.

problem-003 2013-4-12 06:44:33  Major Defect Service
svc:/appliance/kit/network/datalink:ixgbe0
failed - a start, stop or
refresh method failed.

 

NOTE: Marking the issue resolved on the appliance does NOT resolve the issue.


Network interface 'services' logs

$ tail appliance-kit-network-datalink:ixgbe0.log
akdatalink: ixgbe0: could not set MTU 9000
[ Apr 12 06:43:56 Method "start" exited with status 96. ]
[ Apr 12 06:44:33 Leaving maintenance because clear requested. ]
[ Apr 12 06:44:33 Enabled. ]
[ Apr 12 06:44:33 Executing start method ("exec /usr/lib/ak/svc/method/akdatalink start"). ]
Configuring device datalink ixgbe0
Setting ixgbe0 MTU to 9000
dladm: warning: cannot set link property 'mtu' on 'ixgbe0': link busy
akdatalink: ixgbe0: could not set MTU 9000
[ Apr 12 06:44:33 Method "start" exited with status 96. ]

$ tail appliance-kit-network-datalink:ixgbe1.log
akdatalink: ixgbe1: could not set MTU 9000
[ Apr 12 06:13:52 Method "start" exited with status 96. ]
[ Apr 12 06:16:19 Leaving maintenance because clear requested. ]
[ Apr 12 06:16:19 Enabled. ]
[ Apr 12 06:16:19 Executing start method ("exec /usr/lib/ak/svc/method/akdatalink start"). ]
Configuring device datalink ixgbe1
Setting ixgbe1 MTU to 9000
dladm: warning: cannot set link property 'mtu' on 'ixgbe1': link busy
akdatalink: ixgbe1: could not set MTU 9000
[ Apr 12 06:16:19 Method "start" exited with status 96. ]

$ tail appliance-kit-network-datalink:ixgbe2.log
akdatalink: ixgbe2: could not set MTU 9000
[ Apr 12 06:12:38 Method "start" exited with status 96. ]
[ Apr 12 06:16:18 Leaving maintenance because clear requested. ]
[ Apr 12 06:16:18 Enabled. ]
[ Apr 12 06:16:18 Executing start method ("exec /usr/lib/ak/svc/method/akdatalink start"). ]
Configuring device datalink ixgbe2
Setting ixgbe2 MTU to 9000
dladm: warning: cannot set link property 'mtu' on 'ixgbe2': link busy
akdatalink: ixgbe2: could not set MTU 9000
[ Apr 12 06:16:19 Method "start" exited with status 96. ]

$ tail appliance-kit-network-datalink:ixgbe3.log
akdatalink: ixgbe3: could not set MTU 9000
[ Apr 12 06:15:04 Method "start" exited with status 96. ]
[ Apr 12 06:16:19 Leaving maintenance because clear requested. ]
[ Apr 12 06:16:19 Enabled. ]
[ Apr 12 06:16:19 Executing start method ("exec /usr/lib/ak/svc/method/akdatalink start"). ]
Configuring device datalink ixgbe3
Setting ixgbe3 MTU to 9000
dladm: warning: cannot set link property 'mtu' on 'ixgbe3': link busy
akdatalink: ixgbe3: could not set MTU 9000
[ Apr 12 06:16:20 Method "start" exited with status 96. ]


 

Cause

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In this Document
Symptoms
Cause
Solution
References

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