noble (2) nvme_id_nsfeat.2.gz

NAME

       enum nvme_id_nsfeat - This field defines features of the namespace.

SYNOPSIS

       enum nvme_id_nsfeat {
           NVME_NS_FEAT_THIN ,
           NVME_NS_FEAT_NATOMIC ,
           NVME_NS_FEAT_DULBE ,
           NVME_NS_FEAT_ID_REUSE ,
           NVME_NS_FEAT_IO_OPT

       };

Constants

       NVME_NS_FEAT_THIN
                   If  set, indicates that the namespace supports thin provisioning. Specifically, the Namespace
                   Capacity reported may be less than the Namespace Size.

       NVME_NS_FEAT_NATOMIC
                   If set, indicates that the fields NAWUN, NAWUPF, and NACWU are defined for this namespace and
                   should  be used by the host for this namespace instead of the AWUN, AWUPF, and ACWU fields in
                   the Identify Controller data structure.

       NVME_NS_FEAT_DULBE
                   If set, indicates that the controller supports the Deallocated  or  Unwritten  Logical  Block
                   error for this namespace.

       NVME_NS_FEAT_ID_REUSE
                   If  set,  indicates  that  the  value in the NGUID field for this namespace, if non- zero, is
                   never reused by the controller and that the value in the EUI64 field for this  namespace,  if
                   non-zero, is never reused by the controller.

       NVME_NS_FEAT_IO_OPT
                   If  set,  indicates  that  the  fields  NPWG, NPWA, NPDG, NPDA, and NOWS are defined for this
                   namespace and should be used by the host for I/O optimization