IBM Support

IZ96155: SEA/VIO CLIENT HANG - INTERRUPTS DO NOT REACH THE TRUNK ADAPTER APPLIES TO AIX 6100-06

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • A VIOS Server will not forward traffic from its VIO
    Clients
    to the external network.
    
    Packets from the VIO Client travel to the hypervisor
    (phype)
    but the packets are dropped by the hypervisor as it
    attempts
    to deliver the packet to the VIOServer's trunk adapter.
    The hypervisor will have dropped the packets because
    there
    are no buffers to place the data in. On the VIOServer,
    interrupts are not activating the trunk adapter to read
    and
    remove data from its buffers. This results in having full
    buffers at the trunk adapter.
    
    Since the trunk adapter's buffers are full, phype cannot
    deliver the data and so VIO Clients cannot get packets
    through the SEA adapter and out to the network.
    
    The problem was discovered on P7 systems where Vlans on
    the SEA are used.
    
    "Hypervisor Receive" errors on the trunk adapter will
    increase as this problem occurs and the VIO Clients are
    not able to reach the outside network.
    

Local fix

Problem summary

  • Unresponsive VIO Clients with traffice not forwarded to
    external network.
    

Problem conclusion

  • Ensure proper locking around receive scheduling operations.
    

Temporary fix

Comments

  • 5300-11 - use AIX APAR IZ98424
    5300-12 - use AIX APAR IZ98126
    6100-04 - use AIX APAR IZ97605
    6100-05 - use AIX APAR IZ97457
    6100-06 - use AIX APAR IZ96155
    7100-00 - use AIX APAR IZ97035
    

APAR Information

  • APAR number

    IZ96155

  • Reported component name

    VIRTUAL I/O SER

  • Reported component ID

    5765G3400

  • Reported release

    220

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2011-03-04

  • Closed date

    2011-03-16

  • Last modified date

    2013-04-16

Fix information

  • Fixed component name

    VIRTUAL I/O SER

  • Fixed component ID

    5765G3400

Applicable component levels

  • R220 PSY

       UP

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSAVPM","label":"PowerVM VIOS Standard Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSAVNM","label":"PowerVM VIOS Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSAVQG","label":"PowerVM VIOS Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSXUJX","label":"PowerVM Standard (VIOS)"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSXUCU","label":"PowerVM Express (VIOS)"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU009","label":"Systems - Cognitive"},"Product":{"code":"SSXU6R","label":"PowerVM Enterprise (VIOS)"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSSQGS","label":"PowerVM Enterprise Edition for Small Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG11M","label":"APARs - AIX 5.2 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG11P","label":"APARs - AIX 5.3 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""},{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG11Q","label":"APARs - AIX 6.1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"220","Edition":""}]

Document Information

Modified date:
16 April 2013