---
name: "libnvme_update_block_size-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/libnvme_update_block_size-libnvme3"
---

# libnvme\_update\_block\_size-libnvme3(2)

Update the block size

## NAME

libnvme\_update\_block\_size - Update the block size

## SYNOPSIS

**int libnvme\_update\_block\_size** **(struct libnvme\_transport\_handle \*hdl** *,* **int block\_size** *);*

## ARGUMENTS

- hdl

  Transport handle

- block\_size

  New block size

## DESCRIPTION

Notify the kernel blkdev to update its block size after a block size change. This should only be used for namespace handles, not controllers.

## RETURN

0 if the block size was updated or a negative error code otherwise.