Sun Fire[TM] 12K/15K/E20K/E25K: Duplicate Open Boot Prom (OBP) devaliases may prevent the system from booting

Asset ID:	1-72-1011843.1
Update Date:	2015-10-21
Keywords:

Solution Type Problem Resolution Sure

Solution 1011843.1 : Sun Fire[TM] 12K/15K/E20K/E25K: Duplicate Open Boot Prom (OBP) devaliases may prevent the system from booting

Applies to:

Sun Fire 15K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire 12K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E20K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E25K Server - Version Not Applicable to Not Applicable [Release N/A]
All Platforms

Symptoms

Duplicate Open Boot Prom (OBP) aliases may prevent the system from booting.

Cause

Issue can be checked with "devalias" command while at ok prompt.

If system is currently booted, check the sysconfig/prtconf-vp.out file for duplicate devalias entries. If any duplicates are found, determine if the duplicate entries reference different devices. If any duplicates are found to reference different devices, the system may fail to boot. Devalias entries in prtconf-vp.out are displayed in a system Node with a name of "aliases" (see the node example below).

Example devalias Node entry from prtconf-vp.out. Note that the duplicate alias "disk" would fail this check. The duplicate alias disk5 would not fail, because both entries reference the same device. Also, note the node name field at the bottom of the Node entry.

Node 0xf081ffb0
xdisk: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
xnet: '/ssm@0,0/pci@18,700000/pci@1/SUNW,hme@0,1'
diskc: '/ssm@0,0/pci@1c,700000/pci@1/SUNW,isptwo@4/sd@0,0'
netc: '/ssm@0,0/pci@1c,700000/pci@1/SUNW,hme'
cdrom: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@6,0:f'
disk: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
disk: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@1,0'
disk0: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@0,0'
disk1: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@1,0'
disk2: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@2,0'
disk3: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@3,0'
disk4: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@4,0'
disk5: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@5,0'
def-cn: '/sgcn'
diskifp: '/ssm@0,0/pci@19,700000/SUNW,ifp@1/ssd@0,0'
diskglm: '/ssm@0,0/pci@18,700000/scsi@2/disk@0,0'
scsi: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo'
net: '/ssm@0,0/pci@1c,700000/pci@1/SUNW,hme@0,1'
disk5: '/ssm@0,0/pci@18,700000/pci@1/SUNW,isptwo@4/sd@5,0'
name: 'aliases'

Solution

Delete the duplicate devalias entries from the OBP.

Note, this must be done from the OBP ok> prompt, and will require system downtime to complete. Use the command "nvunalias" to remove each of the duplicate entries. Ensure that the nvramrc is not set to recreate one of the duplicate aliases unintentionally. Note that a "reset-all" may be required on the system before the duplicate aliases will not appear in the output of a "devalias" command. Then, recreate the appropriate aliases with the "nvalias" command.

Product
Sun Fire 15K Server

Keywords: devalias, node

Previously Published As 48126

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