SG\_REFERRALS(8) SG3\_UTILS SG\_REFERRALS(8)

# [NAME](#NAME)

sg\_referrals - send SCSI REPORT REFERRALS command

# [SYNOPSIS](#SYNOPSIS)

**sg\_referrals** \[*--help*] \[*--hex*] \[*--lba=LBA*] \[*--maxlen=LEN*] \[*--one-segment*] \[*--raw*] \[*--readonly*] \[*--verbose*] \[*--version*] *DEVICE*

# [DESCRIPTION](#DESCRIPTION)

Send the SCSI REPORT REFERRALS command to the *DEVICE* and outputs the response. This command was introduced in (draft) SBC-3 revision 24 and devices that support referrals should support this command.

The default action is to decode the response for all user data segment referral descriptors. The amount of output can be reduced by the *--lba* and *--one-segment* options.

# [OPTIONS](#OPTIONS)

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

[**-h**, **--help**](#h)

output the usage message then exit.

[**-H**, **--hex**](#H)

output response to this command in ASCII hex.

[**-l**, **--lba**=*LBA*](#l)

where *LBA* is the Logical Block Address (LBA) in the first user data segment the *DEVICE* should report the referrals parameter data for.

[**-m**, **--maxlen**=*LEN*](#m)

where *LEN* is the (maximum) response length in bytes. It is placed in the cdb's "allocation length" field. If not given then 256 is used. 256 is enough space for the response header and user data segment descriptors.

[**-s**, **--one-segment**](#s)

report the user data segment of the segment specified by the *LBA* parameter only.

[**-r**, **--raw**](#r)

output response in binary (to stdout).

[**-R**, **--readonly**](#R)

open the *DEVICE* read-only (e.g. in Unix with the O\_RDONLY flag). The default is to open it read-write.

[**-v**, **--verbose**](#v)

increase the level of verbosity, (i.e. debug output). Additional output caused by this option is sent to stderr.

[**-V**, **--version**](#V)

print the version string and then exit.

# [NOTES](#NOTES)

For a discussion of referrals see section 4.25 of sbc3r25.pdf at https://www.t10.org (or the corresponding section of a later draft).

# [EXIT STATUS](#EXIT_STATUS)

The exit status of sg\_referrals is 0 when it is successful. Otherwise see the [sg3\_utils(8)](/man/enterprise-packages/sg3-utils/sg3_utils.8) man page.

# [AUTHORS](#AUTHORS)

Written by Douglas Gilbert and Hannes Reinecke.

# [REPORTING BUGS](#REPORTING_BUGS)

Report bugs to <dgilbert at interlog dot com>.

# [COPYRIGHT](#COPYRIGHT)

Copyright © 2009-2014 Douglas Gilbert and Hannes Reinecke  
This software is distributed under a BSD-2-Clause license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# [SEE ALSO](#SEE_ALSO)

[**sg\_vpd(8)**](/man/enterprise-packages/sg3-utils/sg_vpd.8)

May 2014 sg3\_utils-1.39

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Document: sg_referrals(8) from sg3-utils 1.49-r3 (Chainguard OS)
Source: https://github.com/doug-gilbert/sg3_utils.git