---
name: "qemu-io"
section: "1"
platform: "linux"
package: "qemu-utils"
version: "1:10.0.13+ds-0+deb13u1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/qemu-io"
---

# qemu-io(1)

QEMU Disk exerciser

## NAME

qemu-io - QEMU Disk exerciser

## SYNOPSIS

**qemu-io \[-h\] \[-V\] \[-rsnm\] \[-c cmd\] ... \[file\]**

## DESCRIPTION

qemu-io is a command line utility to exercise the QEMU I/O path.

## OPTIONS

- **-c, --cmd \<cmd\>**

  Command to execute

- **-r, --read-only**

  Export read-only

- **-s, --snapshot**

  Use snapshot file

- **-n, --nocache**

  Disable host cache

- **-g, --growable**

  Allow file to grow (only applies to protocols)

- **-m, --misalign**

  Misalign allocations for O\_DIRECT

- **-k, --native-aio**

  Use kernel AIO implementation (on Linux only)

- **-h, --help**

  Display help and exit

- **-V, --version**

  Output version information and exit

## SEE ALSO

[**qemu-img**(1)](/qemu-img/1.md), [**qemu-nbd**(8)](/qemu-nbd/8.md)

## AUTHOR

QEMU project

This manual page was written by Asias He \<asias.hejun@gmail.com\>, for the Debian project (and may be used by others). Permission is  granted to  copy, distribute and/or modify this document under the terms of the Creative Commons Attribution-Share Alike 3.0 United States License. (See http://creativecommons.org/licenses/by-sa/3.0/us/legalcode)