---
name: "blkpr"
section: "8"
platform: "linux"
package: "util-linux"
version: "2.42.4-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/blkpr"
---

# blkpr(8)

run a persistent-reservations command on a device

## NAME

blkpr - run a persistent-reservations command on a device

## SYNOPSIS

**blkpr** \[options\] *device*

## DESCRIPTION

**blkpr** is used to run a persistent-reservations command on a device that supports the Persistent Reservations feature.

The *device* argument is the pathname of the block device.

## OPTIONS

- **-c**, **--command** *command*

  The command for managing persistent reservations. Supported commands are: **register**, **reserve**, **release**, **preempt**, **preempt-abort**, **clear**, **read-keys**, and **read-reservation**.

- **-k**, **--key** *key*

  The key the command should operate on.

- **-K**, **--oldkey** *oldkey*

  The old key the command should operate on.

- **-f**, **--flag** *flag*

  Supported flag is **ignore-key**.

- **-t**, **--type** *type*

  Supported types are **write-exclusive**, **exclusive-access**, **write-exclusive-reg-only**, **exclusive-access-reg-only**, **write-exclusive-all-regs**, and **exclusive-access-all-regs**.

- **-h**, **--help**

  Display help text and exit.

- **-V**, **--version**

  Display version and exit.

## AUTHORS

*zhenwei pi* \<pizhenwei@bytedance.com\>

## SEE ALSO

[**sg\_persist**(8)](/sg_persist/8.md)

Linux documentation at:  \<https://docs.kernel.org/block/pr.html\> iSCSI specification at:  \<https://datatracker.ietf.org/doc/html/rfc3720\> NVMe-oF specification at:  \<https://nvmexpress.org/nvme-over-fabrics-part-two/\>

## REPORTING BUGS

For bug reports, use the *issue tracker* \<https://github.com/util-linux/util-linux/issues\>.

## AVAILABILITY

The **blkpr** command is part of the util-linux package which can be downloaded from *Linux Kernel Archive* \<https://www.kernel.org/pub/linux/utils/util-linux/\>.