VERITAS Volume Manager 3.5 Troubleshooting Guide (August 2002)

vxdg Error Messages
66 VERITAS Volume Manager Troubleshooting Guide
- Case 2: Somearrays suchas EMC and HDSprovide mirroring in hardware.When
a LUN pairissplit, dependingon howthe process is performed,this may resultin
two disks with the same disk ID.
Check with your array vendor to make sure that you are using the correct split
procedure. If you know which LUNs you want to use, choose which path to
exclude, and then either edit the file /etc/vx/vxvm.exclude, or, if
vxconfigd 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).
- Case 3: If disks have become duplicated using the dd command or any other disk
copying utility, choose which set of duplicate disks youwant toexclude, andthen
either edit the file /etc/vx/vxvm.exclude, or, if vxconfigd 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).
vxvm:vxconfigd: NOTICE: Volume volume entering degraded mode
◆ Description: Detachinga subdiskin thenamed RAID-5volume has caused the volume
to enter “degraded” mode. While in degraded mode, performance of the RAID-5
volume is substantially reduced. More importantly, failure of another subdisk may
leave the RAID-5 volume unusable. Also, if the RAID-5 volume does not have an
active log, then failure of the system may leave the volume unusable.
◆ Action: If hot-relocation is enabled, VERITAS Volume Manager objects affected by the
disk failure are taken care of automatically. Mail is sent to root indicating what
actions were taken by VxVM and what further actions the administrator should take.
vxdg Error Messages
An error message from the vxdg command indicates that the requested operation cannot
be performed. Follow the recommended course of action given below.
vxvm: vxdg: ERROR: diskgroup: Cannot remove last disk group
configuration copy
◆ Description: The requested disk group move, split or join operation would leave the
disk group without any configuration copies.
◆ Action: None. The operation is not supported.