{
    "mode": "man",
    "parameter": "proc_scsi",
    "section": "5",
    "url": "https://www.chedong.com/phpMan.php/man/proc_scsi/5/json",
    "generated": "2026-10-08T03:20:36Z",
    "sections": {
        "NAME": {
            "content": "/proc/scsi/ - SCSI\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "/proc/scsi/\nA  directory with the scsi mid-level pseudo-file and various SCSI low-level driver di‐\nrectories, which contain a file for each SCSI host in this system, all of  which  give\nthe  status  of  some part of the SCSI IO subsystem.  These files contain ASCII struc‐\ntures and are, therefore, readable with cat(1).\n\nYou can also write to some of the files to reconfigure the subsystem or switch certain\nfeatures on or off.\n\n/proc/scsi/scsi\nThis is a listing of all SCSI devices known to the kernel.  The listing is similar  to\nthe  one  seen during bootup.  scsi currently supports only the add-single-device com‐\nmand which allows root to add a hotplugged device to the list of known devices.\n\nThe command\n\necho 'scsi add-single-device 1 0 5 0' > /proc/scsi/scsi\n\nwill cause host scsi1 to scan on SCSI channel 0 for a device on ID 5 LUN 0.  If  there\nis  already a device known on this address or the address is invalid, an error will be\nreturned.\n\n/proc/scsi/drivername/\ndrivername can currently be NCR53c7xx, aha152x, aha1542, aha1740,  aic7xxx,  buslogic,\neatadma,  eatapio,  fdomain,  in2000,  pas16,  qlogic,  scsidebug,  seagate,  t128,\nu15-24f, ultrastore, or wd7000.  These directories show up for all drivers that regis‐\ntered at least one SCSI HBA.  Every directory contains one file per  registered  host.\nEvery host-file is named after the number the host was assigned during initialization.\n\nReading  these  files will usually show driver and host configuration, statistics, and\nso on.\n\nWriting to these files allows different things on different hosts.  For example,  with\nthe  latency  and  nolatency commands, root can switch on and off command latency mea‐\nsurement code in the eatadma driver.  With the lockup and unlock commands,  root  can\ncontrol bus lockups simulated by the scsidebug driver.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "proc(5)\n\nLinux man-pages 6.7                          2023-08-15                                 procscsi(5)",
            "subsections": []
        }
    },
    "summary": "/proc/scsi/ - SCSI",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "proc",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/proc/5/json"
        }
    ]
}