EFI disks with MPxIO cause DMP to disable path and/or disk is listed in error state due to Sunbugid 6912703

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Article ID: 100001084

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Description

Error Message

 

# vxdisk list
DEVICE TYPE DISK GROUP STATUS
disk_2 auto -    -     error

# vxdctl enable
NOTICE: VxVM vxdmp V-5-0-148 enabled path 118/0x8 belonging to the dmpnode 324/0x8
NOTICE: VxVM vxdmp V-5-0-112 disabled path 118/0x8 belonging to the dmpnode 324/0x8

Resolution


EFI labelled disks require an entry in the device directories ( /dev/(r)dsk)  with the "whole disk" (wd) notation for proper functioning with Volume Manager(VxVM) and Dynamic Multipathing (DMP) .

Absence of these entries cause a variety of problems including devices listed in error state in the vxdisk list command output and DMP disabling the path when Solaris MPxIO Multi-pathing driver is enabled.

Configurations without MPxIO also have exhibited the problem wherein the sd/ssd driver fails to create the "wd" entry for EFI labelled devices and this issue is also being investigated by Sun.


To confirm if MPxIO is disabled, type:

# stmsboot -L
stmsboot: MPXIO disabled

 

Customers are encouraged to contact Sun to report the problem and request assistance from Sun Support for trouble-shooting and identifying workarounds and/or fixes.
 
A similar issue exists in configurations involving EMC Powerpath and EFI disks - where the requisite device entry with the "wd" notation is not created. Refer to  EMC Primus document 145057 for additional details

See Related Articles for documentation on this problem.

Issue/Introduction


EFI disks with MPxIO cause DMP to disable path and/or disk is listed in error state due to Sunbugid 6912703
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