NAME

sg_read_block_limits - send SCSI READ BLOCK LIMITS command

SYNOPSIS

sg_read_block_limits [--help] [--hex] [--mloi] [--raw] [--readonly] [--verbose] [--version] DEVICE

DESCRIPTION

Send a SCSI READ BLOCK LIMITS command to DEVICE and outputs the response. This command is defined for tape (drives) and its description is found in the SSC documents at https://www.t10.org .

OPTIONS

Arguments to long options are mandatory for short options as well.

-h, --help: output the usage message then exit.
-H, --hex: output response in hex (rather than decode it).
-m, --mloi: sets the MLOI bit in the READ BLOCK LIMITS command and if that succeeds, prints out the Maximum Logical Object Identifier (MLOI) value. The MLOI bit was introduced in the ssc4r02.pdf draft.
-r, --raw: output response in binary to stdout.
-R, --readonly: open DEVICE in read-only mode. The default is to open it in read-write mode.
-v, --verbose: increase the level of verbosity, (i.e. debug output).
-V, --version: print the version string and then exit.

EXIT STATUS

The exit status of sg_read_block_limits is 0 when it is successful. Otherwise see the sg3_utils(8) man page.

EXAMPLES

It is usually okay to use no options. Here is an invocation (on the first line following the "#" command prompt) followed by some typical output:

# sg_read_block_limits /dev/st0
Read Block Limits results:
Minimum block size: 1 byte(s)
Maximum block size: 16777215 byte(s), 16383 KB, 15 MB
Granularity: 0

AUTHORS

Written by Douglas Gilbert.

REPORTING BUGS

Report bugs to <dgilbert at interlog dot com>.