---
name: "nvme_flbas"
section: "2"
platform: "linux"
package: "libnvme-dev"
version: "1.13-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_flbas"
---

# nvme\_flbas(2)

This field indicates the formatted LBA size

## NAME

enum nvme\_flbas - This field indicates the formatted LBA size

## SYNOPSIS

enum nvme\_flbas {\
     **NVME\_FLBAS\_LOWER\_SHIFT** , \
\
     **NVME\_FLBAS\_META\_EXT\_SHIFT** , \
\
     **NVME\_FLBAS\_HIGHER\_SHIFT** , \
\
     **NVME\_FLBAS\_LOWER\_MASK** , \
\
     **NVME\_FLBAS\_META\_EXT\_MASK** , \
\
     **NVME\_FLBAS\_HIGHER\_MASK**

};

## Constants

- NVME\_FLBAS\_LOWER\_SHIFT

  Shift amount to get the format index least significant 4 bits

- NVME\_FLBAS\_META\_EXT\_SHIFT

  Shift amount to get the metadata transferred

- NVME\_FLBAS\_HIGHER\_SHIFT

  Shift amount to get the format index most significant 2 bits

- NVME\_FLBAS\_LOWER\_MASK

  Mask to get the format index least significant 4 bits

- NVME\_FLBAS\_META\_EXT\_MASK

  Mask to get the metadata transferred

- NVME\_FLBAS\_HIGHER\_MASK

  Mask to get the format index most significant 2 bits