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The SCIOLSTART ioctl may also fail before it attempts the iSCSI login. If the Status Class and Status
Detail are both zero but Errno is nonzero, then the ioctl failed before the login occurred.
Two common errno values returned by the SCIOLSTART ioctl are 73 (ECONNRESET) and 81
(EHOSTUNREACH).
The errno 73 indicates that the target IP address refused the TCP connection that the iSCSI adapter
attempted. One possible cause is that the wrong TCP port number is specified in the
/etc/iscsi/targetshwx configuration file.
The errno 81 indicates that the iSCSI adapter did not get any response from the target's IP address. In
other words, the iSCSI adapter cannot ping the target's IP address.
If the iSCSI adapter does not discover any new hdisks, and the cfglog does not reveal any of those errors,
the following are other possibilities.
v If the syntax of the /etc/iscsi/targetshwx file is incorrect, the configuration method will not attempt
to open or start the device, so the preceding errors will not appear.
v If the target device is accessible but no LUNs are assigned to the device, no error will appear, but there
will be a message indicating 0 luns found.
iSCSI TOE adapter error log information (ICS_ERR template):
Learn about the error log entries made by the iSCSI TOE adapter.
v Table 20 on page 102 shows the detail sense data layout.
v Table 21 on page 102 shows the detail sense data descriptions.
v Special detail sense data and Table 22 on page 104 show a special format that is used for logging bulk
data such as a crash record or an IOCB request or completion queue.
v Table 23 on page 104 shows the error number values.
The detail sense data log in the ICS_ERR template for PCI iSCSI TOE adapters uses the structure
error_log_def defined in src/rspc/kernext/pci/qlisc/qliscdd.h.
101
Managing PCI adapters
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