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SCSI_READCAP(8) SG3_UTILS SCSI_READCAP(8) NAME scsi_readcap - do SCSI READ CAPACITY command on disks SYNOPSIS scsi_readcap [--brief] [--help] [--long] [--verbose] DEVICE [DEVICE]* DESCRIPTION This bash shell script calls the sg_readcap utility on each given DE- VICE. This will send a SCSI READ CAPACITY command to each DEVICE. The default action of this script is to send the 10 byte cdb READ CA- PACITY(10) command to each DEVICE. If a response indicates the number of blocks is greater than or equal to '2**32 - 1' then the READ CAPAC- ITY(16) is sent and its response is output. OPTIONS Arguments to long options are mandatory for short options as well. -b, --brief shortens the output to two hexadecimal numbers, both prefixed by '0x'. The first number is the number of blocks available and the second is the size of each blocks in bytes (e.g. '0x12a19eb0 0x200'). If an error is detected '0x0 0x0' is output and the script continues if there are more DEVICEs. -h, --help print out the usage message then exit. -l, --long the default is to send the READ CAPACITY(10) command (i.e. the 10 byte cdb variant). When this option is given the READ CAPAC- ITY(16) command is sent. The latter command yields more informa- tion in its response. -v, --verbose increase level or verbosity. EXIT STATUS The exit status of this script is 0 when it is successful. Otherwise the exit status is that of the last sg_readcap utility called. See the sg3_utils(8) man page. AUTHORS Written by D. Gilbert COPYRIGHT Copyright (C) 2009-2013 Douglas Gilbert This software is distributed under a BSD-2-Clause license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR- POSE. SEE ALSO sg_readcap (sg3_utils) sg3_utils-1.36 May 2013 SCSI_READCAP(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | AUTHORS | COPYRIGHT | SEE ALSO
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