HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide (EK-G80TS-SA. C01, March 2005)

Troubleshooting Information
30 HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide
Host cannot access
unit.
Host files or device
drivers not properly
installed or
configured.
Check for the required
device special files.
Configure device special
files as described in the
installation and
configuration guide that
accompanied the software
release.
Invalid Cache. See the description for
the invalid cache
symptom on page 26.
See the description for the
invalid cache symptom.
Units have lost data. Issue the
SHOW unit-number
FULL command.
Clear these units with:
CLEAR_ERRORS
unit-number
LOST_DATA.
Host log file or
maintenance
terminal indicates
that a forced error
occurred while the
controller was
reconstructing a
RAIDset or
mirrorset.
Unrecoverable read
errors might have
occurred while the
controller was
reconstructing the
storageset. A flawed
data block was
detected and
reassigned to a good
data block; however,
the original data was
unrecoverable. The
reassigning of the
data block has
repaired the original
problem, but the
reassigned data
block now contains
invalid data. This is
normal after a minor
media flaw is
detected.
Conduct a read scan of
the storageset by using
the appropriate utility
from the host operating
system, such as the
DD
utility for an
HP Tru64 UNIX host.
Rebuild the storageset,
and then restore
storageset data from a
backup source. While the
controller is reconstructing
the storageset, monitor the
host error log activity or
spontaneous event reports
on the maintenance
terminal for any
unrecoverable errors. If
unrecoverable errors
persist, note the device on
which they occurred, and
replace the device before
proceeding.
Table 4: Troubleshooting Guidelines (Sheet 9 of 9)
Symptom Possible Cause Investigation Remedy