DOKK / manpages / debian 12 / libnvme-dev / nvme_set_features_resv_persist.2.en
nvme_set_features_resv_persist(2) libnvme API manual nvme_set_features_resv_persist(2)

nvme_set_features_resv_persist - Set persist through power loss feature

int nvme_set_features_resv_persist (int fd , bool ptpl , bool save , __u32 *result );

File descriptor of nvme device
Persist Through Power Loss
Save value across power states
The command completion result from CQE dword0

The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.

nvme_set_features_resv_persist January 2023