---
name: "nvme_id_ctrl_trattr-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/nvme_id_ctrl_trattr-libnvme3"
---

# nvme\_id\_ctrl\_trattr-libnvme3(2)

Tracking Attributes

## NAME

enum nvme\_id\_ctrl\_trattr - Tracking Attributes

## SYNOPSIS

enum nvme\_id\_ctrl\_trattr {\
     **NVME\_CTRL\_TRATTR\_THMCS\_SHIFT** , \
\
     **NVME\_CTRL\_TRATTR\_TUDCS\_SHIFT** , \
\
     **NVME\_CTRL\_TRATTR\_MRTLL\_SHIFT** , \
\
     **NVME\_CTRL\_TRATTR\_THMCS\_MASK** , \
\
     **NVME\_CTRL\_TRATTR\_TUDCS\_MASK** , \
\
     **NVME\_CTRL\_TRATTR\_MRTLL\_MASK**

};

## Constants

- NVME\_CTRL\_TRATTR\_THMCS\_SHIFT

  Shift amount to get the Track Host Memory Changes Support from the *struct nvme\_id\_ctrl*.trattr field.

- NVME\_CTRL\_TRATTR\_TUDCS\_SHIFT

  Shift amount to get the Track User Data Changes Support from the *struct nvme\_id\_ctrl*.trattr field.

- NVME\_CTRL\_TRATTR\_MRTLL\_SHIFT

  Shift amount to get the Memory Range Tracking Length Limit from the *struct nvme\_id\_ctrl*.trattr field.

- NVME\_CTRL\_TRATTR\_THMCS\_MASK

  Mask to get the Track Host Memory Changes Support from the *struct nvme\_id\_ctrl*.trattr field.

- NVME\_CTRL\_TRATTR\_TUDCS\_MASK

  Mask to get the Track User Data Changes Support from the *struct nvme\_id\_ctrl*.trattr field.

- NVME\_CTRL\_TRATTR\_MRTLL\_MASK

  Mask to get the Memory Range Tracking Length Limit from the *struct nvme\_id\_ctrl*.trattr field.