VERITAS Volume Manager 3.5 Troubleshooting Guide (September 2004)

Error Messages
Kernel Warning Messages
Chapter 3
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• Action: If the volume is mirrored, no further action is necessary since the alternate
mirror’s contents will be written to the failing mirror; this is often sufficient to
correct media failures. If this error occurs often, but never leads to a plex detach,
there may be a marginally defective region on the disk at the position indicated. It
may eventually be necessary to remove data from this disk (see the vxevac (1M)
manual page) and then to reformat the drive.
If the volume is not mirrored, this message indicates that some data could not be
read. The file system or other application reading the data may report an additional
error, but in either event, data has been lost. The volume can be partially salvaged
and moved to another location if desired.
vxvm:vxio:WARNING: subdisk subdisk failed in plex plex in volume volume
• Description: The kernel has detected a subdisk failure, which may mean that the
underlying disk is failing.
• Action: Check for obvious problems with the disk (such as a disconnected cable). If
hot-relocation is enabled and the disk is failing, recovery from subdisk failure is
handled automatically.
vxvm:vxio:WARNING: write error on mirror plex of volume volume offset
offset length length
• Description: An error was detected while writing to a mirror. This error will
generally be followed by a detach message, unless the volume is not mirrored.
• Action: The disk reporting the error is failing to correctly store written data. If the
volume is not mirrored, consider removing the data and reformatting the disk. If the
volume is mirrored, it will become detached and you should replace or reformat the
disk.
If this error occurs often, but never leads to a plex detach, there may be a marginally
defective region on the disk at the position shown. It may eventually be necessary to
remove data from this disk (see the vxevac (1M) manual page) and then to reformat
the drive.