Smp_rep_phy_event (8) Linux Manual Page

smp_rep_phy_event – invoke REPORT PHY EVENT SMP function

Synopsis

smp_rep_phy_event [–desc] [–enumerate] [–help] [–hex] [–interface=PARAMS] [–long] [–phy=ID] [–raw] [–sa=SAS_ADDR] [–verbose] [–version] [–zero] SMP_DEVICE[,N]

Description

Sends a SAS Serial Management Protocol (SMP) REPORT PHY EVENT function request to an SMP target. The SMP target is identified by the SMP_DEVICE and the SAS_ADDR. Depending on the interface, the SAS_ADDR may be deduced from the SMP_DEVICE. The mpt interface uses SMP_DEVICE to identify a HBA (an SMP initiator) and needs the additional ,N to differentiate between HBAs if there are multiple present.

Reports zero or more phy event descriptors. Each descriptor contains a phy event source, a phy event (i.e. a count) and a peak value detector theshold. At least one phy event should be maintained for each phy.

Options

Mandatory arguments to long options are mandatory for short options as well.

-d, –desc: precede each phy event descriptor with a line announcing its descriptor index number. Index numbers start at 1.
-e, –enumerate: enumerate all of the known Phy Event Source names, one per line preceded by its value in hex. Ignores SMP_DEVICE if it is given; most other options are also ignored. Exits after displaying the names.
-h, –help: output the usage message then exit.
-H, –hex: output the response (less the CRC field) in hexadecimal.
-I, –interface=PARAMS: interface specific parameters. In this case "interface" refers to the path through the operating system to the SMP initiator. See the smp_utils man page for more information.
-l, –long: prefix each phy event source string with its numeric identifier in hex. For example: "[0x1]: Invalid word count: 23"
-p, –phy=ID: phy identifier. ID is a value between 0 and 254. Default is 0.
-r, –raw: send the response (less the CRC field) to stdout in binary. All error messages are sent to stderr.
-s, –sa=SAS_ADDR: specifies the SAS address of the SMP target device. Typically this is an expander. This option may not be needed if the SMP_DEVICE has the target’s SAS address within it. The SAS_ADDR is in decimal but most SAS addresses are shown in hexadecimal. To give a number in hexadecimal either prefix it with ‘0x’ or put a trailing ‘h’ on it.
-v, –verbose: increase the verbosity of the output. Can be used multiple times
-V, –version: print the version string and then exit.

Notes

Similar information is maintained for SAS SSP target phys (e.g. on a SAS disk). It can be obtained from the Protocol Specific Port log page with the sg_logs utility.

Similar information may be obtained for SAS initiator phys (e.g. on a SAS HBA). As an example in Linux 2.6.28 error information can be found in this directory /sys/class/sas_phy/phy-4:0 (for the phy 0 in SCSI/SAS host 4).

Similar information may be obtained for SATA device phys (e.g. on a SATA disk). If there is a SAT layer between OS and the SATA device then the sg_sat_phy_event utility can fetch the information.

Conforming To

The SMP REPORT PHY EVENT function was introduced in SAS-2 .

Authors

Written by Douglas Gilbert.

Reporting Bugs

Report bugs to <dgilbert at interlog dot com>.

smp_rep_phy_event (8) Linux Manual Page