NAME

       enum  nvme_id_ctrl_oncs  -  This  field indicates the optional NVM commands and features supported by the
       controller.

SYNOPSIS

       enum nvme_id_ctrl_oncs {
           NVME_CTRL_ONCS_COMPARE ,
           NVME_CTRL_ONCS_WRITE_UNCORRECTABLE ,
           NVME_CTRL_ONCS_DSM ,
           NVME_CTRL_ONCS_WRITE_ZEROES ,
           NVME_CTRL_ONCS_SAVE_FEATURES ,
           NVME_CTRL_ONCS_RESERVATIONS ,
           NVME_CTRL_ONCS_TIMESTAMP ,
           NVME_CTRL_ONCS_VERIFY ,
           NVME_CTRL_ONCS_COPY ,
           NVME_CTRL_ONCS_COPY_SINGLE_ATOMICITY ,
           NVME_CTRL_ONCS_ALL_FAST_COPY ,
           NVME_CTRL_ONCS_WRITE_ZEROES_DEALLOCATE ,
           NVME_CTRL_ONCS_NAMESPACE_ZEROES

       };

Constants

       NVME_CTRL_ONCS_COMPARE
                   If set, then the controller supports the Compare command.

       NVME_CTRL_ONCS_WRITE_UNCORRECTABLE
                   If set, then the controller supports the Write Uncorrectable command.

       NVME_CTRL_ONCS_DSM
                   If set, then the controller supports the Dataset Management command.

       NVME_CTRL_ONCS_WRITE_ZEROES
                   If set, then the controller supports the Write Zeroes command.

       NVME_CTRL_ONCS_SAVE_FEATURES
                   If set, then the controller supports the Save field set  to  a  non-zero  value  in  the  Set
                   Features command and the Select field set to a non-zero value in the Get Features command.

       NVME_CTRL_ONCS_RESERVATIONS
                   If set, then the controller supports reservations.

       NVME_CTRL_ONCS_TIMESTAMP
                   If set, then the controller supports the Timestamp feature.

       NVME_CTRL_ONCS_VERIFY
                   If set, then the controller supports the Verify command.

       NVME_CTRL_ONCS_COPY
                   If set, then the controller supports the copy command.

       NVME_CTRL_ONCS_COPY_SINGLE_ATOMICITY
                   If  set,  then  the write portion of a Copy command is performed as a single write command to
                   which the same atomicity requirements that apply to a write command apply.

       NVME_CTRL_ONCS_ALL_FAST_COPY
                   If set, then all copy operations for the Copy command are fast copy operations.

       NVME_CTRL_ONCS_WRITE_ZEROES_DEALLOCATE
                   If MAXWZD bit set, then the maximum data size for Write Zeroes command depends on  the  value
                   of the Deallocate bit in the Write Zeroes command and the value in the WZDSL field in the I/O
                   Command Set specific Identify Controller data structure.

       NVME_CTRL_ONCS_NAMESPACE_ZEROES
                   If  NSZS  bit  set,  then  the  controller supports the Namespace Zeroes (NSZ) bit in the NVM
                   Command Set Write Zeroes command.

May 2025                                     enum nvme_id_ctrl_oncs                                   libnvme(2)