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Add nvmecontrol(8) source code and beginnings of a man page to the tree.

Browse Source 
Sponsored by:		Intel
Contributions from:	Joe Golio/EMC <joseph dot golio at emc dot com>
This commit is contained in:
jimharris 2012-09-17 21:26:55 +00:00
parent 1a22bd7a4f
commit 780e343358
3 changed files with 693 additions and 0 deletions
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# $FreeBSD$
PROG= nvmecontrol
MAN= nvmecontrol.8
.include <bsd.prog.mk>

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.\"
.\" Copyright (c) 2012 Intel Corporation
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions, and the following disclaimer,
.\" without modification.
.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
.\" substantially similar to the "NO WARRANTY" disclaimer below
.\" ("Disclaimer") and any redistribution must be conditioned upon
.\" including a substantially similar Disclaimer requirement for further
.\" binary redistribution.
.\"
.\" NO WARRANTY
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGES.
.\"
.\" nvmecontrol man page.
.\"
.\" Author: Jim Harris <jimharris@FreeBSD.org>
.\"
.\" $FreeBSD$
.\"
.Dd September 17, 2012
.Dt NVMECONTROL 8
.Os
.Sh NAME
.Nm nvmecontrol
.Nd NVM Express control utility
.Sh SYNOPSIS
.Nm
.Ic devlist
.Nm
.Ic identify
.Op Fl v
.Op Fl x
.Aq device id
.Nm
.Ic perftest
.Aq Fl n Ar num_threads
.Aq Fl o Ar read|write
.Op Fl p
.Aq Fl s Ar size_in_bytes
.Aq Fl t Ar time_in_sec
.Aq device id
.Sh DESCRIPTION
NVM Express (NVMe) is a storage protocol standard, for SSDs and other
high-speed storage devices over PCI Express.
.Sh EXAMPLES
.Dl nvmecontrol devlist
.Pp
Display a list of NVMe controllers and namespaces along with their device nodes.
.Dl nvmecontrol identify nvme0
.Pp
Display a human-readable summary of the nvme0 IDENTIFY_CONTROLLER data.
.Pp
.Dl nvmecontrol identify -x -v nvme0ns1
.Pp
Display a hexadecimal dump of the nvme0 IDENTIFY_NAMESPACE data for namespace
1.
.Pp
.Dl nvmecontrol perftest -n 32 -o read -s 512 -t 30 nvme0ns1
.Pp
Run a performance test on nvme0ns1 using 32 kernel threads for 30 seconds. Each
thread will issue a single 512 byte read command. Results are printed to
stdout when 30 seconds expires.
.Pp
.Sh AUTHORS
.An -nosplit
.Nm
was developed by Intel and originally written by
.An Jim Harris Aq jimharris@FreeBSD.org .
.Pp
This man page was written by
.An Jim Harris Aq jimharris@FreeBSD.org .

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/*-
* Copyright (C) 2012 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/ioccom.h>
#include <sys/stat.h>
#include <dev/nvme/nvme.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#define DEVLIST_USAGE \
" nvmecontrol devlist\n"
#define IDENTIFY_USAGE \
" nvmecontrol identify <controller id|namespace id>\n"
#define PERFTEST_USAGE \
" nvmecontrol perftest <-n num_threads> <-o read|write>\n" \
" <-s size_in_bytes> <-t time_in_seconds>\n" \
" <-i intr|wait> [-f refthread] [-p]\n" \
" <namespace id>\n"
static void perftest_usage(void);
static void
usage(void)
{
fprintf(stderr, "usage:\n");
fprintf(stderr, DEVLIST_USAGE);
fprintf(stderr, IDENTIFY_USAGE);
fprintf(stderr, PERFTEST_USAGE);
exit(EX_USAGE);
}
static void
print_controller_hex(struct nvme_controller_data *cdata, uint32_t length)
{
uint32_t *p;
uint32_t i, j;
p = (uint32_t *)cdata;
length /= sizeof(uint32_t);
for (i = 0; i < length; i+=8) {
printf("%03x: ", i*4);
for (j = 0; j < 8; j++)
printf("%08x ", p[i+j]);
printf("\n");
}
printf("\n");
}
static void
print_controller(struct nvme_controller_data *cdata)
{
printf("Controller Capabilities/Features\n");
printf("================================\n");
printf("Vendor ID: %04x\n", cdata->vid);
printf("Subsystem Vendor ID: %04x\n", cdata->ssvid);
printf("Serial Number: %s\n", cdata->sn);
printf("Model Number: %s\n", cdata->mn);
printf("Firmware Version: %s\n", cdata->fr);
printf("Recommended Arb Burst: %d\n", cdata->rab);
printf("IEEE OUI Identifier: %02x %02x %02x\n",
cdata->ieee[0], cdata->ieee[1], cdata->ieee[2]);
printf("Multi-Interface Cap: %02x\n", cdata->mic);
/* TODO: Use CAP.MPSMIN to determine true memory page size. */
printf("Max Data Transfer Size: ");
if (cdata->mdts == 0)
printf("Unlimited\n");
else
printf("%d\n", PAGE_SIZE * (1 << cdata->mdts));
printf("\n");
printf("Admin Command Set Attributes\n");
printf("============================\n");
printf("Security Send/Receive: %s\n",
cdata->oacs.security ? "Supported" : "Not Supported");
printf("Format NVM: %s\n",
cdata->oacs.format ? "Supported" : "Not Supported");
printf("Firmware Activate/Download: %s\n",
cdata->oacs.firmware ? "Supported" : "Not Supported");
printf("Abort Command Limit: %d\n", cdata->acl+1);
printf("Async Event Request Limit: %d\n", cdata->aerl+1);
printf("Number of Firmware Slots: ");
if (cdata->oacs.firmware != 0)
printf("%d\n", cdata->frmw.num_slots);
else
printf("N/A\n");
printf("Firmware Slot 1 Read-Only: ");
if (cdata->oacs.firmware != 0)
printf("%s\n", cdata->frmw.slot1_ro ? "Yes" : "No");
else
printf("N/A\n");
printf("Per-Namespace SMART Log: %s\n",
cdata->lpa.ns_smart ? "Yes" : "No");
printf("Error Log Page Entries: %d\n", cdata->elpe+1);
printf("Number of Power States: %d\n", cdata->npss+1);
printf("\n");
printf("NVM Command Set Attributes\n");
printf("==========================\n");
printf("Submission Queue Entry Size\n");
printf(" Max: %d\n", 1 << cdata->sqes.max);
printf(" Min: %d\n", 1 << cdata->sqes.min);
printf("Completion Queue Entry Size\n");
printf(" Max: %d\n", 1 << cdata->cqes.max);
printf(" Min: %d\n", 1 << cdata->cqes.min);
printf("Number of Namespaces: %d\n", cdata->nn);
printf("Compare Command: %s\n",
cdata->oncs.compare ? "Supported" : "Not Supported");
printf("Write Uncorrectable Command: %s\n",
cdata->oncs.write_unc ? "Supported" : "Not Supported");
printf("Dataset Management Command: %s\n",
cdata->oncs.dsm ? "Supported" : "Not Supported");
printf("Volatile Write Cache: %s\n",
cdata->vwc.present ? "Present" : "Not Present");
}
static void
print_namespace_hex(struct nvme_namespace_data *nsdata, uint32_t length)
{
uint32_t *p;
uint32_t i, j;
p = (uint32_t *)nsdata;
length /= sizeof(uint32_t);
for (i = 0; i < length; i+=8) {
printf("%03x: ", i*4);
for (j = 0; j < 8; j++)
printf("%08x ", p[i+j]);
printf("\n");
}
printf("\n");
}
static void
print_namespace(struct nvme_namespace_data *nsdata)
{
uint32_t i;
printf("Size (in LBAs): %lld (%lldM)\n",
(long long)nsdata->nsze,
(long long)nsdata->nsze / 1024 / 1024);
printf("Capacity (in LBAs): %lld (%lldM)\n",
(long long)nsdata->ncap,
(long long)nsdata->ncap / 1024 / 1024);
printf("Utilization (in LBAs): %lld (%lldM)\n",
(long long)nsdata->nuse,
(long long)nsdata->nuse / 1024 / 1024);
printf("Thin Provisioning: %s\n",
nsdata->nsfeat.thin_prov ? "Supported" : "Not Supported");
printf("Number of LBA Formats: %d\n", nsdata->nlbaf+1);
printf("Current LBA Format: LBA Format #%d\n",
nsdata->flbas.format);
for (i = 0; i <= nsdata->nlbaf; i++) {
printf("LBA Format #%d:\n", i);
printf(" LBA Data Size: %d\n",
1 << nsdata->lbaf[i].lbads);
}
}
static uint32_t
ns_get_sector_size(struct nvme_namespace_data *nsdata)
{
return (1 << nsdata->lbaf[0].lbads);
}
static void
devlist(int argc, char *argv[])
{
struct nvme_controller_data cdata;
struct nvme_namespace_data nsdata;
struct stat devstat;
char name[64], path[64];
uint32_t i;
int ch, ctrlr, exit_code, fd, found;
exit_code = EX_OK;
while ((ch = getopt(argc, argv, "")) != -1) {
switch ((char)ch) {
default:
usage();
}
}
ctrlr = -1;
found = 0;
while (1) {
ctrlr++;
sprintf(name, "nvme%d", ctrlr);
sprintf(path, "/dev/%s", name);
if (stat(path, &devstat) != 0)
break;
found++;
fd = open(path, O_RDWR);
if (fd < 0) {
printf("Could not open %s.\n", path);
exit_code = EX_NOPERM;
continue;
}
if (ioctl(fd, NVME_IDENTIFY_CONTROLLER, &cdata) == -1) {
printf("ioctl to %s failed.\n", path);
exit_code = EX_IOERR;
continue;
}
printf("%6s: %s\n", name, cdata.mn);
for (i = 0; i < cdata.nn; i++) {
sprintf(name, "nvme%dns%d", ctrlr, i+1);
sprintf(path, "/dev/%s", name);
fd = open(path, O_RDWR);
if (fd < 0) {
printf("Could not open %s.\n", path);
exit_code = EX_NOPERM;
continue;
}
if (ioctl(fd, NVME_IDENTIFY_NAMESPACE, &nsdata) == -1) {
printf("ioctl to %s failed.\n", path);
exit_code = EX_IOERR;
continue;
}
printf(" %10s (%lldGB)\n",
name,
nsdata.nsze *
(long long)ns_get_sector_size(&nsdata) /
1024 / 1024 / 1024);
}
}
if (found == 0)
printf("No NVMe controllers found.\n");
exit(exit_code);
}
static void
identify_ctrlr(int argc, char *argv[])
{
struct nvme_controller_data cdata;
struct stat devstat;
char path[64];
int ch, fd, hexflag = 0, hexlength;
int verboseflag = 0;
while ((ch = getopt(argc, argv, "vx")) != -1) {
switch ((char)ch) {
case 'v':
verboseflag = 1;
break;
case 'x':
hexflag = 1;
break;
default:
usage();
}
}
sprintf(path, "/dev/%s", argv[optind]);
if (stat(path, &devstat) != 0) {
printf("Invalid device node '%s'.\n", path);
exit(EX_IOERR);
}
fd = open(path, O_RDWR);
if (fd < 0) {
printf("Could not open %s.\n", path);
exit(EX_NOPERM);
}
if (ioctl(fd, NVME_IDENTIFY_CONTROLLER, &cdata) == -1) {
printf("ioctl to %s failed.\n", path);
exit(EX_IOERR);
}
if (hexflag == 1) {
if (verboseflag == 1)
hexlength = sizeof(struct nvme_controller_data);
else
hexlength = offsetof(struct nvme_controller_data,
reserved5);
print_controller_hex(&cdata, hexlength);
exit(EX_OK);
}
if (verboseflag == 1) {
printf("-v not currently supported without -x.\n");
usage();
}
print_controller(&cdata);
exit(EX_OK);
}
static void
identify_ns(int argc, char *argv[])
{
struct nvme_namespace_data nsdata;
struct stat devstat;
char path[64];
int ch, fd, hexflag = 0, hexlength;
int verboseflag = 0;
while ((ch = getopt(argc, argv, "vx")) != -1) {
switch ((char)ch) {
case 'v':
verboseflag = 1;
break;
case 'x':
hexflag = 1;
break;
default:
usage();
}
}
sprintf(path, "/dev/%s", argv[optind]);
if (stat(path, &devstat) != 0) {
printf("Invalid device node '%s'.\n", path);
exit(EX_IOERR);
}
fd = open(path, O_RDWR);
if (fd < 0) {
printf("Could not open %s.\n", path);
exit(EX_NOPERM);
}
if (ioctl(fd, NVME_IDENTIFY_NAMESPACE, &nsdata) == -1) {
printf("ioctl to %s failed.\n", path);
exit(EX_IOERR);
}
if (hexflag == 1) {
if (verboseflag == 1)
hexlength = sizeof(struct nvme_namespace_data);
else
hexlength = offsetof(struct nvme_namespace_data,
reserved6);
print_namespace_hex(&nsdata, hexlength);
exit(EX_OK);
}
if (verboseflag == 1) {
printf("-v not currently supported without -x.\n");
usage();
}
print_namespace(&nsdata);
exit(EX_OK);
}
static void
identify(int argc, char *argv[])
{
char *target;
if (argc < 2)
usage();
while (getopt(argc, argv, "vx") != -1) ;
target = argv[optind];
/* Specified device node must have "nvme" in it. */
if (strstr(argv[optind], "nvme") == NULL) {
printf("Invalid device node '%s'.\n", argv[optind]);
exit(EX_IOERR);
}
optreset = 1;
optind = 1;
/*
* If devicde node contains "ns", we consider it a namespace,
* otherwise, consider it a controller.
*/
if (strstr(target, "ns") == NULL)
identify_ctrlr(argc, argv);
else
identify_ns(argc, argv);
}
static void
print_perftest(struct nvme_io_test *io_test, bool perthread)
{
uint32_t i, io_completed = 0, iops, mbps;
for (i = 0; i < io_test->num_threads; i++)
io_completed += io_test->io_completed[i];
iops = io_completed/io_test->time;
mbps = iops * io_test->size / (1024*1024);
printf("Threads: %2d Size: %6d %5s Time: %3d IO/s: %7d MB/s: %4d\n",
io_test->num_threads, io_test->size,
io_test->opc == NVME_OPC_READ ? "READ" : "WRITE",
io_test->time, iops, mbps);
if (perthread)
for (i = 0; i < io_test->num_threads; i++)
printf("\t%3d: %8d IO/s\n", i,
io_test->io_completed[i]/io_test->time);
exit(1);
}
static void
perftest_usage(void)
{
fprintf(stderr, "usage:\n");
fprintf(stderr, PERFTEST_USAGE);
exit(EX_USAGE);
}
static void
perftest(int argc, char *argv[])
{
struct nvme_io_test io_test;
int fd;
char ch;
char *p;
const char *name;
char path[64];
u_long ioctl_cmd = NVME_IO_TEST;
bool nflag, oflag, sflag, tflag;
int err, perthread = 0;
nflag = oflag = sflag = tflag = false;
name = NULL;
memset(&io_test, 0, sizeof(io_test));
while ((ch = getopt(argc, argv, "f:i:n:o:ps:t:")) != -1) {
switch (ch) {
case 'f':
if (!strcmp(optarg, "refthread"))
io_test.flags |= NVME_TEST_FLAG_REFTHREAD;
break;
case 'i':
if (!strcmp(optarg, "bio") ||
!strcmp(optarg, "wait"))
ioctl_cmd = NVME_BIO_TEST;
else if (!strcmp(optarg, "io") ||
!strcmp(optarg, "intr"))
ioctl_cmd = NVME_IO_TEST;
break;
case 'n':
nflag = true;
io_test.num_threads = strtoul(optarg, &p, 0);
if (p != NULL && *p != '\0') {
fprintf(stderr,
"\"%s\" not valid number of threads.\n",
optarg);
perftest_usage();
} else if (io_test.num_threads == 0 ||
io_test.num_threads > 128) {
fprintf(stderr,
"\"%s\" not valid number of threads.\n",
optarg);
perftest_usage();
}
break;
case 'o':
oflag = true;
if (!strcmp(optarg, "read") || !strcmp(optarg, "READ"))
io_test.opc = NVME_OPC_READ;
else if (!strcmp(optarg, "write") ||
!strcmp(optarg, "WRITE"))
io_test.opc = NVME_OPC_WRITE;
else {
fprintf(stderr, "\"%s\" not valid opcode.\n",
optarg);
perftest_usage();
}
break;
case 'p':
perthread = 1;
break;
case 's':
sflag = true;
io_test.size = strtoul(optarg, &p, 0);
if (p == NULL || *p == '\0' || toupper(*p) == 'B') {
// do nothing
} else if (toupper(*p) == 'K') {
io_test.size *= 1024;
} else if (toupper(*p) == 'M') {
io_test.size *= 1024 * 1024;
} else {
fprintf(stderr, "\"%s\" not valid size.\n",
optarg);
perftest_usage();
}
break;
case 't':
tflag = true;
io_test.time = strtoul(optarg, &p, 0);
if (p != NULL && *p != '\0') {
fprintf(stderr,
"\"%s\" not valid time duration.\n",
optarg);
perftest_usage();
}
break;
}
}
name = argv[optind];
if (!nflag || !oflag || !sflag || !tflag || name == NULL)
perftest_usage();
sprintf(path, "/dev/%s", name);
fd = open(path, O_RDWR);
if (fd < 0) {
fprintf(stderr, "%s not valid device.\n", path);
perftest_usage();
}
err = ioctl(fd, ioctl_cmd, &io_test);
if (err) {
fprintf(stderr, "NVME_IO_TEST returned %d\n", errno);
exit(EX_IOERR);
}
print_perftest(&io_test, perthread);
exit(EX_OK);
}
int
main(int argc, char *argv[])
{
if (argc < 2)
usage();
if (strcmp(argv[1], "devlist") == 0)
devlist(argc-1, &argv[1]);
else if (strcmp(argv[1], "identify") == 0)
identify(argc-1, &argv[1]);
else if (strcmp(argv[1], "perftest") == 0)
perftest(argc-1, &argv[1]);
usage();
return (0);
}