sg_get_lba_status
(1m)
名前
sg_get_lba_status - send the SCSI GET LBA STATUS command
形式
sg_get_lba_status [--brief] [--help] [--hex] [--lba=LBA]
[--maxlen=LEN] [--raw] [--verbose] [--version] DEVICE
説明
SG3_UTILS SG_GET_LBA_STATUS(8)
NAME
sg_get_lba_status - send the SCSI GET LBA STATUS command
SYNOPSIS
sg_get_lba_status [--brief] [--help] [--hex] [--lba=LBA]
[--maxlen=LEN] [--raw] [--verbose] [--version] DEVICE
DESCRIPTION
Send the SCSI GET LBA STATUS command to the DEVICE and out-
puts the response. This command was introduced in (draft)
SBC-3 revision 20 and devices that support logical block
provisioning should support this command.
The default action is to decode the response into one LBA
status descriptor per line output to stdout. The descriptor
LBA is output in hex (prefixed by '0x') and the number of
blocks is output in decimal followed by the provisioning
status in decimal. The provisioning status can be in the
range 0 to 15 of which only 0 (mapped), 1 (unmapped) and 2
(anchored) are used currently. The amount of output can be
reduced by the --brief option.
OPTIONS
Arguments to long options are mandatory for short options as
well.
-b, --brief
when use once then one LBA status descriptor per line
is output to stdout. Each line has this format:
"0x<descriptor_LBA> 0x<blocks> <provisioning_status>".
So the descriptor LBA and blocks are output in hex and
the provisioning status in decimal. When used twice
(e.g. '-bb' or '--brief --brief') the the provisioning
status of the given LBA (or LBA 0 if the --lba option
is not given) is output to stdout. A check is made that
the given LBA lies on the range of the first returned
LBA status descriptor (as it should according to SBC-3
revision 20) and warnings are sent to stderr if it
doesn't.
-h, --help
output the usage message then exit.
-H, --hex
output response to this command in ASCII hex.
-l, --lba=LBA
where LBA is the starting Logical Block Address (LBA)
to check the provisioning status for. Note that the
DEVICE chooses how many following blocks that it will
return provisioning status for.
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SG3_UTILS SG_GET_LBA_STATUS(8)
-m, --maxlen=LEN
where LEN is the (maximum) response length in bytes. It
is placed in the cdb's "allocation length" field. If
not given then 24 is used. 24 is enough space for the
response header and one LBA status descriptor. LEN
should be 8 plus a multiple of 16 (e.g. 24, 40, and 56
are suitable).
-r, --raw
output response in binary (to stdout).
-v, --verbose
increase the level of verbosity, (i.e. debug output).
Additional output caused by this option is sent to
stderr.
-V, --version
print the version string and then exit.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | system/storage/sg3_utils |
+---------------+--------------------------+
|Stability | Uncommitted |
+---------------+--------------------------+
NOTES
In SBC-3 revision 25 the calculation associated with the
Parameter Data Length field in the response was modified.
Prior to that the byte offset was 8 and in revision 25 it
was changed to 4.
For a discussion of logical block provisioning see section
4.7 of sbc3r29.pdf at http://www.t10.org (or the correspond-
ing section of a later draft).
EXIT STATUS
The exit status of sg_get_lba_status is 0 when it is suc-
cessful. Otherwise see the sg3_utils(8) man page.
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
sg3_utils-1.33 Last change: January 2012 2
SG3_UTILS SG_GET_LBA_STATUS(8)
COPYRIGHT
Copyright (C) 2009-2012 Douglas Gilbert
This software is distributed under a FreeBSD license. There
is NO warranty; not even for MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.
SEE ALSO
sg_write_same(8), sg_unmap(8)
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://sg.danny.cz/sg/p/sg3_utils-1.33.tgz
Further information about this software can be found on the
open source community website at
http://sg.danny.cz/sg/sg3_utils.html.
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