libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct nvme\_ana\_group\_desc - ANA Group Descriptor

# [SYNOPSIS](#SYNOPSIS)

struct nvme\_ana\_group\_desc {  
**\_\_le32 grpid;**  
**\_\_le32 nnsids;**  
**\_\_le64 chgcnt;**  
**\_\_u8 state;**  
**\_\_u8 rsvd17\[15];**  
**\_\_le32 nsids\[];**  
};

# [Members](#Members)

[grpid](#grpid)

ANA group id

[nnsids](#nnsids)

Number of namespaces in *nsids*

[chgcnt](#chgcnt)

Change counter

[state](#state)

ANA state

[rsvd17](#rsvd17)

Reserved

[nsids](#nsids)

List of namespaces

struct nvme\_ana\_group\_desc October 2026

---

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