HPE StoreEver LTO 5, User Manual

Page: 78 / 91

Because these ASCs may be visible in device logs and diagnostic tools, they are listed in the table below.
Table 9: Advanced failover vendor specific additional sense codes
ASC ASCQ Description Meaning
82h
1
93h FAILOVER
SESSION
SEQUENCE
ERROR Failover is enabled but the device driver has not
opened a failover capable connection to the device.
Check that the failover driver is installed and
attempt to reopen the device.
82h
2
94h FAILOVER
COMMAND
SEQUENCE
ERROR The advanced path failover system is unable to
ensure that the command will be executed in the
proper sequence. Close all connections to the
device and then restart application services.
82h 95h DUPLICATE
FAILOVER
SESSION KEY The failover driver attempted to use a failover
session key that is currently in use by another host.
The driver should automatically try a different key.
Restart application service if any errors occur.
82h 96h INVALID
FAILOVER KEY The failover driver attempted to use a failover
session key that is not valid. Retry opening the
device or restart application services.
82h 97h FAILOVER
SESSION
RELEASED An event caused the device to close the failover
session that was in use. The driver should
automatically open a new session, if not restart
application services.
82h 98h SMC STATE
CHANGED A normal event informing the device driver that an
event has caused a change in the media changer
state information. The device driver should
automatically update media changer state
information and continue.
82h 99h FAILOVER SMC
DEVICE SERVER
MOVED A normal event informing the device driver that this
path is not an active control path. The device driver
will automatically use a different path.
1
If advanced path failover is enabled on a tape drive or a library, and the advanced path failover driver is not installed
on the host, this error will be reported to applications attempting to read/write the tape drive or move media using the
changer.
2
In rare cases when all paths to a tape drive are lost while commands are in progress it is possible for this error to be
reported once when the connection is opened next. Closing the device and retrying the connection will clear this
condition.
78 Troubleshooting failover operation