libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_smart\_egcw - Endurance Group Critical Warning Summary

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_smart\_egcw {  
**NVME\_SMART\_EGCW\_SPARE** ,  
**NVME\_SMART\_EGCW\_DEGRADED** ,  
**NVME\_SMART\_EGCW\_RO**

};

# [Constants](#Constants)

[NVME\_SMART\_EGCW\_SPARE](#NVME_SMART_EGCW_SPARE)

If set, then the available spare capacity of one or more Endurance Groups has fallen below the threshold.

[NVME\_SMART\_EGCW\_DEGRADED](#NVME_SMART_EGCW_DEGRADED)

If set, then the reliability of one or more Endurance Groups has been degraded due to significant media related errors or any internal error that degrades NVM subsystem reliability.

[NVME\_SMART\_EGCW\_RO](#NVME_SMART_EGCW_RO)

If set, then the namespaces in one or more Endurance Groups have been placed in read only mode not as a result of a change in the write protection state of a namespace.

enum nvme\_smart\_egcw October 2026

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