---
name: "sg_referrals"
section: "8"
platform: "linux"
package: "sg3_utils"
version: "1.49-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/sg_referrals"
---

# sg\_referrals(8)

send SCSI REPORT REFERRALS command

## NAME

sg\_referrals - send SCSI REPORT REFERRALS command

## SYNOPSIS

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

## 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

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

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

- **-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 256 is used. 256 is enough space for the response header and user data segment descriptors.

- **-s**, **--one-segment**

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

- **-r**, **--raw**

  output response in binary (to stdout).

- **-R**, **--readonly**

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

- **-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.

## 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

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

## AUTHORS

Written by Douglas Gilbert and Hannes Reinecke.

## REPORTING BUGS

Report bugs to \<dgilbert at interlog dot com\>.

## 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

**[sg\_vpd(8)](/sg_vpd/8.md)**