{
    "mode": "man",
    "parameter": "sg_sat_phy_event",
    "section": "8",
    "url": "https://www.chedong.com/phpMan.php/man/sg_sat_phy_event/8/json",
    "generated": "2026-10-08T20:42:33Z",
    "synopsis": "sgsatphyevent [--ckcond] [--extend] [--help] [--hex] [--ignore]  [--len={16|12}]  [--raw]\n[--reset] [--verbose] [--version] DEVICE",
    "sections": {
        "NAME": {
            "content": "sgsatphyevent  - use ATA READ LOG EXT via a SAT pass-through to fetch SATA phy event coun‐\nters\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "sgsatphyevent [--ckcond] [--extend] [--help] [--hex] [--ignore]  [--len={16|12}]  [--raw]\n[--reset] [--verbose] [--version] DEVICE\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "This utility sends an ATA READ LOG EXT with the log page (\"address\") set to 11h to DEVICE and\noutputs the response. Log page 11h is defined in the SATA 2.5 standard and contains phy event\ncounters. Rather than send this command directly to the DEVICE, are sent via a SCSI transport\nwhich  is assumed to contain a SCSI to ATA Translation (SAT) Layer (SATL). The SATL may be in\nan operating system driver, in host bus adapter firmware or in some external enclosure.\n\nThe SAT standard (SAT ANSI INCITS 431-2007, prior draft: sat-r09.pdf at www.t10.org)  defines\ntwo  SCSI \"ATA PASS-THROUGH\" commands: one using a 16 byte \"cdb\" and the other with a 12 byte\ncdb. This utility defaults to using the 16 byte cdb variant. SAT-2 is also a standard:  SAT-2\nANSI  INCITS  465-2010  and  the  draft  prior to that is sat2r09.pdf . The SAT-3 project has\nstarted and the most recent draft is sat3r01.pdf .\n",
            "subsections": []
        },
        "OPTIONS": {
            "content": "Arguments to long options are mandatory for short options as well.\n",
            "subsections": [
                {
                    "name": "-c --ck_cond",
                    "content": "sets the CKCOND bit in the ATA PASS-THROUGH SCSI cdb. The default  setting  is  clear\n(i.e.  0).  When  set the SATL should yield a sense buffer containing a ATA Result de‐\nscriptor irrespective of whether the command succeeded or failed. When clear the  SATL\nshould  only  yield  a  sense buffer containing a ATA Result descriptor if the command\nfailed.\n",
                    "flag": "-c",
                    "long": "--ck_cond"
                },
                {
                    "name": "-e --extend",
                    "content": "sets the EXTEND bit in the ATA PASS-THROUGH SCSI cdb. The  default  setting  is  clear\n(i.e.  0). When set a 48 bit LBA command is sent to the device. This option has no ef‐\nfect when --len=12.\n",
                    "flag": "-e",
                    "long": "--extend"
                },
                {
                    "name": "-h --help",
                    "content": "outputs the usage message summarizing command line options then exits. Ignores  DEVICE\nif given.\n",
                    "flag": "-h",
                    "long": "--help"
                },
                {
                    "name": "-H --hex",
                    "content": "outputs  the  ATA  READ  LOG EXT response in hex. The default action (i.e. without any\n'-H' options) is to output the response in hex, grouped in 16 bit words (i.e. the  ATA\nstandard's  preference).   When  given once, the response is output in ASCII hex bytes\n(i.e. the SCSI standard's preference). When given twice (i.e. '-HH') the output is  in\nhex, grouped in 16 bit words, the same as the default but without a header.\n",
                    "flag": "-H",
                    "long": "--hex"
                },
                {
                    "name": "-i --ignore",
                    "content": "usually  the  phy counter identifier names are decoded. When this option is given, the\nnumeric value of the identifier is output, the vendor flag, the data length (in bytes)\nand the corresponding value.\n",
                    "flag": "-i",
                    "long": "--ignore"
                },
                {
                    "name": "-l --len",
                    "content": "this is the length of the SCSI cdb used for the ATA PASS-THROUGH commands.  The  argu‐\nment  can  either be 16 or 12. The default is 16. The larger cdb size is needed for 48\nbit LBA addressing of ATA devices. On the other hand some SCSI transports cannot  con‐\nvey SCSI commands longer than 12 bytes.\n",
                    "flag": "-l",
                    "long": "--len"
                },
                {
                    "name": "-r --raw",
                    "content": "output  the  ATA READ LOG EXT response in binary. The output should be piped to a file\nor another utility when this option is used.  The binary is sent to stdout, and errors\nare sent to stderr.\n",
                    "flag": "-r",
                    "long": "--raw"
                },
                {
                    "name": "-R --reset",
                    "content": "reset the counters after the current values are returned, decoded and displayed.\n",
                    "flag": "-R",
                    "long": "--reset"
                },
                {
                    "name": "-v --verbose",
                    "content": "increases the level or verbosity.\n",
                    "flag": "-v",
                    "long": "--verbose"
                },
                {
                    "name": "-V --version",
                    "content": "print out version string\n",
                    "flag": "-V",
                    "long": "--version"
                }
            ]
        },
        "NOTES": {
            "content": "The SCSI ATA PASS-THROUGH (12) command's opcode is 0xa1 and it clashes  with  the  MMC  set's\nBLANK  command  used  by  cd/dvd writers. So a SATL in front of an ATAPI device that uses MMC\n(i.e. has peripheral device type 5) probably should treat opcode 0xa1 as a BLANK command  and\nsend  it  through to the cd/dvd drive. The ATA PASS-THROUGH (16) command's opcode (0x85) does\nnot clash with anything so it is a better choice.\n\nIn the 2.4 series of Linux kernels the DEVICE must be a SCSI generic (sg) device. In the  2.6\nseries  block  devices (e.g. disks and ATAPI DVDs) can also be specified. For example \"sginq\n/dev/sda\" will work in the 2.6 series kernels. From lk 2.6.6 other SCSI \"char\"  device  names\nmay  be  used  as  well (e.g. \"/dev/st0m\"). Prior to lk 2.6.29 USB mass storage limited sense\ndata to 18 bytes which made the --ckcond option yield strange (truncated) results.\n",
            "subsections": []
        },
        "EXIT STATUS": {
            "content": "The exit status of sgsatidentify is 0 when it is successful. Otherwise see the sg3utils(8)\nman page.\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "Written by Douglas Gilbert\n",
            "subsections": []
        },
        "REPORTING BUGS": {
            "content": "Report bugs to <dgilbert at interlog dot com>.\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "Copyright © 2006-2020 Douglas Gilbert\nThis software is distributed under a FreeBSD license. There is NO warranty; not even for MER‐\nCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "",
            "subsections": [
                {
                    "name": "sg_sat_identify,sg_sat_read_gplog(sg3_utils),       smp_rep_phy_err_log(smp_utils),sdparm(sd‐",
                    "content": ""
                },
                {
                    "name": "parm),hdparm(hdparm)",
                    "content": "sg3utils-1.46                                July 2020                          SGSATPHYEVENT(8)"
                }
            ]
        }
    },
    "summary": "sgsatphyevent  - use ATA READ LOG EXT via a SAT pass-through to fetch SATA phy event coun‐ ters",
    "flags": [
        {
            "flag": "-c",
            "long": "--ck_cond",
            "arg": null,
            "description": "sets the CKCOND bit in the ATA PASS-THROUGH SCSI cdb. The default setting is clear (i.e. 0). When set the SATL should yield a sense buffer containing a ATA Result de‐ scriptor irrespective of whether the command succeeded or failed. When clear the SATL should only yield a sense buffer containing a ATA Result descriptor if the command failed."
        },
        {
            "flag": "-e",
            "long": "--extend",
            "arg": null,
            "description": "sets the EXTEND bit in the ATA PASS-THROUGH SCSI cdb. The default setting is clear (i.e. 0). When set a 48 bit LBA command is sent to the device. This option has no ef‐ fect when --len=12."
        },
        {
            "flag": "-h",
            "long": "--help",
            "arg": null,
            "description": "outputs the usage message summarizing command line options then exits. Ignores DEVICE if given."
        },
        {
            "flag": "-H",
            "long": "--hex",
            "arg": null,
            "description": "outputs the ATA READ LOG EXT response in hex. The default action (i.e. without any '-H' options) is to output the response in hex, grouped in 16 bit words (i.e. the ATA standard's preference). When given once, the response is output in ASCII hex bytes (i.e. the SCSI standard's preference). When given twice (i.e. '-HH') the output is in hex, grouped in 16 bit words, the same as the default but without a header."
        },
        {
            "flag": "-i",
            "long": "--ignore",
            "arg": null,
            "description": "usually the phy counter identifier names are decoded. When this option is given, the numeric value of the identifier is output, the vendor flag, the data length (in bytes) and the corresponding value."
        },
        {
            "flag": "-l",
            "long": "--len",
            "arg": null,
            "description": "this is the length of the SCSI cdb used for the ATA PASS-THROUGH commands. The argu‐ ment can either be 16 or 12. The default is 16. The larger cdb size is needed for 48 bit LBA addressing of ATA devices. On the other hand some SCSI transports cannot con‐ vey SCSI commands longer than 12 bytes."
        },
        {
            "flag": "-r",
            "long": "--raw",
            "arg": null,
            "description": "output the ATA READ LOG EXT response in binary. The output should be piped to a file or another utility when this option is used. The binary is sent to stdout, and errors are sent to stderr."
        },
        {
            "flag": "-R",
            "long": "--reset",
            "arg": null,
            "description": "reset the counters after the current values are returned, decoded and displayed."
        },
        {
            "flag": "-v",
            "long": "--verbose",
            "arg": null,
            "description": "increases the level or verbosity."
        },
        {
            "flag": "-V",
            "long": "--version",
            "arg": null,
            "description": "print out version string"
        }
    ],
    "examples": [],
    "see_also": []
}