Guest

Preview Tool

Cisco Bug: CSCtf22821 - EMC: Getting inquiry commands ABTS with SANtap to UCS6120

Last Modified

Nov 11, 2010

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

4.1(3k)

Description (partial)

Symptom:
The host-target IO may be disrupted in the case of certain HBAs like the UCS Palo Adaptor. 

Conditions:
Persistent Reserve Out (PRO) frames sent by the host and bound for the target can get rejected in the control path if the host forms the frame with the write-bit turned ON (set to 1), since the control path expects the write-bit to be turned ON only for write (WR) commands. This can cause the host to stop all further exchange with the target.  


Workaround(s):
No workaround exists other than to replace the host HBA or configure it to not send PRO commands with the write-bit turned ON.

Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.