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SCSISH(8) System Manager's Manual SCSISH(8) NAME scsish - SCSI shell SYNOPSIS /usr/lib/worm/scsish DESCRIPTION Scsish is a command interpreter for SCSI commands executed through /dev/scsi (see scsi(4)). Many commands are applicable to more or less all SCSI devices; some are specific to the SONY WDA-3000-10 optical disk jukebox. Any details not found here are in the manual for the jukebox. Typically commands are sent to a particular drive (a number between 0 and 7 inclusive) on a particular device (normally a number between 0 and 5 inclusive). Most commands take a drive parameter (a number). The device number is set by the id command. Occasionally, commands fail and will print the result of a sense com- mand which is normally needed to clear the error status. All input is in lower case and keywords and numbers are separated by white space. Commands are separated by a newline or semicolon. General SCSI Commands capacity drive Report the capacity of drive as nblocks x blocksize. disk eject drive Eject the disk (or other removable medium) from drive. echo number Print number on standard output. help Print a summary of the available commands. id n Set the destination SCSI bus device number. By default, it is 2 which is the normal device number for the SONY jukebox. inquiry drive Print various bits of status about drive. For example, drive 2,0: WORM device, ' SONY WDA-3000-10 2.D' disk,write protect,,,ready (0x9) If drive is omitted, an inquiry is performed for drives 0 through 7. read drive block Print the contents of the 1024 byte block at block on drive in hexadecimal. read id drive Print the string starting at byte 42 in block 1 on drive. This corresponds to the initial vol_id for worm(8) disks. reset Attempt to reset the SCSI interface. sense drive Print the sense data for drive. Some of the interpretations of the sense bytes are idiosyncratic to SONY. ext sense drive Print the extended sense data for drive. Most of the interpre- tations of the extended sense bytes are idiosyncratic to SONY. sleep n Sleep for n seconds. start drive Start drive spinning. stop drive Stop drive. test drive Test unit ready for drive. SONY Commands alternate drive Print the replacement block tables from the disk. media drive blkno nblks Print a summary of the media quality in drive for the nblks blocks starting at block number blkno. For example, a dirty disk can yield drive 0: media check for 1000 blocks [0-999], upper drive 849 good, 1 unwritten, 147 <50% burst, 3 >96% burst, Please report any instances of messages including rare error to the jukebox guru. ext media drive blkno nblks A verbose form of the media command. Jukebox Commands config Print the configuration data for the jukebox. rel drive shelf side Release the disk from drive to shelf. The value of side indi- cates whether it should be inverted on the way (b) or not (a). If shelf and side are absent, the disk is restored to its former shelf. set shelf side drive Put the disk from shelf into drive. The value of side indicates whether it should be inverted on the way (b) or not (a). internal n Execute various internal reports and diagnostics. internal -1 with no argument will print a list of available diagnostics. status drive Print the status for drive. An absent drive is taken as 0. As the status is for the jukebox as a whole, the value of drive doesn't matter. A sample status output shows the jukebox hides the mapping of logical drive number and actual drive: drive 0: ready,disk in LUN,power on,disk in drive 0, return shelf 2 drive 1: not ready,no disk in LUN,power on,disk in shelf 0 drive 2: not ready,no disk in LUN,power on,disk in shelf 0 drive 3: ready,disk in LUN,power on,disk in drive 1, return shelf 0 drive 4: not ready,no disk in LUN,power on,disk in shelf 0 drive 5: not ready,no disk in LUN,power on,disk in shelf 0 drive 6: not ready,no disk in LUN,power on,disk in shelf 0 drive 7: not ready,no disk in LUN,power on,disk in shelf 0 0: no disk 1: no disk 2: disk, I/O shelf: no disk carrier: disk shelf=0 upper drive: disk, LUN=0 lower drive: disk, LUN=3 SEE ALSO worm(8), scsi(4) SCSISH(8)