ivampiresp/Spdk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

spdk: add reservation support flag to NVMe namespace

Browse Source 
A namespace indicates support for reservations by reporting a non-zero
value in the Reservation Capabilities field in the Identify Namespace
data structure, and controller indicates support for reservation in the
Identify Controller data structure, Here we used namespace field as the
support flag.

Change-Id: I0e1e29548aa3fc8b6d3bbeb4149ec4864316f092
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Changpeng Liu 2016-01-27 11:10:01 +08:00
parent 81f4046402
commit 82db40dbd5
4 changed files with 27 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
examples/nvme/identify/identify.c
View File

@ -342,6 +342,8 @@ print_namespace(struct nvme_namespace *ns)
(flags & NVME_NS_DEALLOCATE_SUPPORTED) ? "Supported" : "Not Supported");
printf("Flush: %s\n",
(flags & NVME_NS_FLUSH_SUPPORTED) ? "Supported" : "Not Supported");
printf("Reservation: %s\n",
(flags & NVME_NS_RESERVATION_SUPPORTED) ? "Supported" : "Not Supported");
printf("Size (in LBAs): %lld (%lldM)\n",
(long long)nsdata->nsze,
(long long)nsdata->nsze / 1024 / 1024);

1
include/spdk/nvme.h
View File

@ -355,6 +355,7 @@ uint64_t nvme_ns_get_size(struct nvme_namespace *ns);
enum nvme_namespace_flags {
NVME_NS_DEALLOCATE_SUPPORTED = 0x1, /**< The deallocate command is supported */
NVME_NS_FLUSH_SUPPORTED = 0x2, /**< The flush command is supported */
NVME_NS_RESERVATION_SUPPORTED = 0x4, /**< The reservation command is supported */
};
/**

4
include/spdk/nvme_spec.h
View File

@ -794,6 +794,7 @@ struct nvme_namespace_data {
} nmic;
/** reservation capabilities */
union {
struct {
/** supports persist through power loss */
uint8_t persist : 1;
@ -818,7 +819,8 @@ struct nvme_namespace_data {
uint8_t reserved : 1;
} rescap;
uint8_t raw;
} nsrescap;
/** format progress indicator */
uint8_t fpi;

4
lib/nvme/nvme_ns.c
View File

@ -126,6 +126,10 @@ nvme_ns_construct(struct nvme_namespace *ns, uint16_t id,
ns->flags |= NVME_NS_FLUSH_SUPPORTED;
}
if (nsdata->nsrescap.raw) {
ns->flags |= NVME_NS_RESERVATION_SUPPORTED;
}
return 0;
}