libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_mi\_cwarn - Controller Health Data Structure (CHDS) - Critical Warning (CWARN)

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_mi\_cwarn {  
**NVME\_MI\_CWARN\_ST** ,  
**NVME\_MI\_CWARN\_TAUT** ,  
**NVME\_MI\_CWARN\_RD** ,  
**NVME\_MI\_CWARN\_RO** ,  
**NVME\_MI\_CWARN\_VMBF**

};

# [Constants](#Constants)

[NVME\_MI\_CWARN\_ST](#NVME_MI_CWARN_ST)

Spare Threshold

[NVME\_MI\_CWARN\_TAUT](#NVME_MI_CWARN_TAUT)

Temperature Above or Under Threshold

[NVME\_MI\_CWARN\_RD](#NVME_MI_CWARN_RD)

Reliability Degraded

[NVME\_MI\_CWARN\_RO](#NVME_MI_CWARN_RO)

Read Only

[NVME\_MI\_CWARN\_VMBF](#NVME_MI_CWARN_VMBF)

Volatile Memory Backup Failed

enum nvme\_mi\_cwarn October 2026

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Document: nvme_mi_cwarn-libnvme3(2) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli