libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct nvme\_lm\_track\_memory\_changes\_data - Track Memory Changes Data Structure, supplied by the host in the data buffer of a Track Send command's Track Memory Changes management operation when starting tracking (TACT set to %NVME\_LM\_TACT\_START\_TRACKING)

# [SYNOPSIS](#SYNOPSIS)

struct nvme\_lm\_track\_memory\_changes\_data {  
**\_\_u8 ver;**  
**\_\_u8 rsvd1\[2];**  
**\_\_u8 rmrtg;**  
**\_\_le32 rnmrtd;**  
**struct nvme\_lm\_memory\_range\_tracking\_descriptor desc\[];**  
};

# [Members](#Members)

[ver](#ver)

Version (VER), shall be cleared to 0h

[rsvd1](#rsvd1)

Reserved

[rmrtg](#rmrtg)

Requested Memory Range Tracking Granularity (RMRTG)

[rnmrtd](#rnmrtd)

Number of Memory Range Tracking Descriptors (RNMRTD), a 1's based value

[desc](#desc)

Memory Range Tracking Descriptor list, see *struct* *nvme\_lm\_memory\_range\_tracking\_descriptor*

struct nvme\_lm\_track\_memory\_changes\_data October 2026

---

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