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

# nvme\_id\_ctrl\_vwc(2)

Volatile write cache

## NAME

enum nvme\_id\_ctrl\_vwc - Volatile write cache

## SYNOPSIS

enum nvme\_id\_ctrl\_vwc {\
     **NVME\_CTRL\_VWC\_PRESENT** , \
\
     **NVME\_CTRL\_VWC\_FLUSH**

};

## Constants

- NVME\_CTRL\_VWC\_PRESENT

  If set, indicates a volatile write cache is present. If a volatile write cache is present, then the host controls whether the volatile write cache is enabled with a Set Features command specifying the value NVME\_FEAT\_FID\_VOLATILE\_WC.

- NVME\_CTRL\_VWC\_FLUSH

  Mask to get the value of the flush command behavior.