VERITAS Volume Manager 3.5 Troubleshooting Guide (August 2002)

Chapter 3, Error Messages
vxconfigd Notice Messages
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◆ Action: Considerreplacing the indicateddisk, since this errorimplies that the disk has
deteriorated to the point where write errors cannot be repaired automatically. The
error can also result from transient problems with cabling or power.
vxvm:vxconfigd: NOTICE:Unable to resolve duplicate diskid.
◆ Description: When VxVM detects disks with duplicate disk IDs (unique internal
identifiers), VxVM attempts to select the appropriate disk (using logic that is specific
to an array). If adisk cannot be selected, VxVM does notimport anyof the duplicated
disks into a disk group. In the rare case when VxVM cannot make the choice, you
must choose which duplicate disk to use.
Note In releases prior to 3.5, VxVM selected the first disk that it found if the selection
process failed. In VxVM 3.5, the default behavior is to avoid the selection of the
wrong disk as this could lead to data corruption. Arrays with mirroring capability
in hardware are particularly susceptible to such data corruption.
◆ Action: User intervention is required in the following cases:
- Case 1: When DMP is disabled to an array that has multiple paths, then each path
to the array is claimed as a unique disk.
If DMPis suppressed, VxVMdoes not know whichpath to select as thetrue path.
You must choose which path to use. Decide which path to exclude, and then
either editthe file/etc/vx/vxvm.exclude,or, ifvxconfigd is running,select
item 1 (suppress all paths through a controller from VxVM’s
view) or item 2 (suppress a path from VxVM’s view) from vxdiskadm
option 17 (Prevent multipathing/Suppress devices from VxVM’s
view).
Thefollowing example showsa vxvm.exclude filewith paths c8t0d0,c8t0d1,
and c8t0d2 excluded from VxVM:
exclude_all 0
paths
c8t0d0 /0/4/0/0.8.0.108.0.0.0
c8t0d1 /0/4/0/0.8.0.108.0.0.1
c8t0d2 /0/4/0/0.8.0.108.0.0.2
#
controllers
#
product
#
pathgroups