SG_READ_BLOCK_LIMITS(8) SG3_UTILS SG_READ_BLOCK_LIMITS(8)

sg_read_block_limits - send SCSI READ BLOCK LIMITS command

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

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 .

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

output the usage message then exit.
output response in hex (rather than decode it).
output response in binary to stdout.
open DEVICE in read-only mode. The default is to open it in read-write mode.
increase the level of verbosity, (i.e. debug output).
print the version string and then exit.

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

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

Written by Douglas Gilbert.

Report bugs to <dgilbert at interlog dot com>.

Copyright © 2009-2017 Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

sg3_utils(sg3_utils)

October 2017 sg3_utils-1.43