VERITAS Volume Manager 4.1 Troubleshooting Guide

Error Messages
Understanding Messages
Chapter 676
• 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.
NOTE This message may also appear during a plex detach operation in a cluster.
In this case, no action is required.
V-5-0-252
VxVM vxio NOTICE V-5-0-252 read error on object subdisk of mirror plex in volume
volume (start offset length length) corrected
• Description: A read error occurred, which caused a read of an alternate mirror and a
writeback to the failing region. This writeback was successful and the data was corrected
on disk.
• Action: None; the problem was corrected automatically. Note the location of the failure for
future reference. If the same region of the subdisk fails again, this may indicate a more
insidious failure and the disk should be reformatted at the next reasonable opportunity.
V-5-0-258
VxVM vxdmp NOTICE V-5-0-258 removed disk array disk_array_serial_number
• Description: A disk array has been disconnected from the host, or some hardware failure
has resulted in the disk array becoming inaccessible to the host.
• Action: Replace disk array hardware if this has failed.
V-5-0-386
VxVM vxio WARNING V-5-0-386 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.