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 http://www.t10.org .
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).
- -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.
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.