HP-UX iSCSI Software Initiator Support Guide (Edition 7)

Table 6 Software Interface Driver Statistics (continued)
Description of FieldCLiscsiutil Statistic
The number of attempts to send the Login command that failed
due to memory allocation failures. The upper level driver
DNumber of failures to send a login command
due to kernel memory allocation failure
recovery may retry the session open, resulting in a re-attempt
to send the Login command. If the memory allocation request
succeeds, the Login command will transmit successfully.
The number of asynchronous failures experienced while waiting
for a login response. The asynchronous failure might be due
DNumber of asynchronous failures waiting
for a login response
to a PDU exchange timeout/abort or lack of memory resources.
The upper level driver recovery may retry the session open,
resulting in a re-attempt to send the Login command. If the
memory allocation request succeeds, the Login command will
transmit successfully.
The number of asynchronous failures experienced while waiting
for a logout response. The asynchronous failure might be due
D/CNumber of asynchronous failures waiting
for a logout response
to a PDU exchange timeout/abort or lack of memory resources.
One additional attempt to complete the Logout is made by
requesting the iswd daemon to close the TCP connection and
tear down the stream.
The number of unexpected TCP close events received during
the connection ready state. As part of recovery, all the I/Os
CNumber of unexpected TCP closes in the
active state
on this connection are aborted, the connection is closed, and
a session reopen is triggered.
The number of timeouts on FIN after the target has sent a logout
response. A close is triggered by requesting the iswd daemon
to close the TCP connection and tear down the stream.
CNumber of timeouts on FIN after sending a
logout command
The number of TCP connection open timeout occurs. The
timeout will trigger the freeing of resources. The upper level
CNumber of TCP connection open timeouts
driver recovery may retry the session open, resulting in a
re-attempt to send the Login command. If the memory allocation
request succeeds, the Login command will transmit successfully.
The number of unexpected TCP close events received while
waiting for a login response. As part of the recovery
CNumber of unexpected connection closes
after a login command
mechanism, resources are freed, the connection is closed, and
a session reopen is triggered.
The number of unexpected TCP close events received while
waiting for a logout response. As part of the recovery
CNumber of unexpected connection closes
after a logout command
mechanism, the Logout PDU is aborted, resources are freed,
and the TCP connection is closed.
The number target authentication timeouts that occurred during
communication with the userspace iradd daemon.
I/CNumber of target authentication timeouts
The number of target authentication failures for CHAP. Either
the target’s CHAP information is not configured in the RADIUS
I/CNumber of target authentication failures
server, or the CHAP information provided by the target is
incorrect.
Number of temporary login redirections requested by a target
device.
INumber of temporary redirection requests
Number of permanent login redirections requested by a target
device.
INumber of permanent redirection requests
The number of memory allocation attempts for a kernel PDU
structure that failed. A failure to allocate a PDU structure means
DNumber of kernel memory allocation failures
54 iSCSI Software Interface Driver Statistics