Logical Domains 1.2 Release Notes

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`Unable to bind memory; limit of 31 segments reached`

Bug ID 6841421: Under certain memory configurations, creating a guest domain might fail with this error message:

Unable to bind memory; limit of 31 segments reached

Multiple memory segments are a normal occurrence that happens whenever there is a different amount of memory on the various CMP processors. However, the current versions of Logical Domains Manager can only support up to 31 memory segments for each guest domain.

Workaround: This situation might occur in the following situations:

Case 1 – The system firmware has determined that one or more FB-DIMMs have failed.

If the system firmware takes a FB-DIMM offline, you must replace it immediately.

Type the following command from the ALOM compatibility shell to list which FB-DIMM modules have been disabled:
sc> showcomponent
The disabled FB-DIMMs are listed at the end of the output.
Case 2 – You have one or more CMP processors that have significantly more memory than the other processors.

Reallocate the FB-DIMMs across the CMP processors to keep the total number and types of FB-DIMMs as close as possible on each processor.
Case 3 – Your system is a T5440, and you have 3 CMP modules, or 2 modules in positions other than CMP0 and CMP1.

Consider upgrading to 4 CMP modules, or repositioning your 2 CMP modules so that they are in slots CMP0 and CMP1. After upgrading or repositioning the CMP modules, follow the instructions in “Node Reconfiguration” in Sun SPARC Enterprise T5440 Server Product Notes, which are in the Sun SPARC Enterprise T5440 Server Documentation collection on docs.sun.com.