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nvme.c
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/*
* nvme.c -- NVM-Express command line utility.
*
* Copyright (c) 2014-2015, Intel Corporation.
*
* Written by Keith Busch <kbusch@kernel.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* This program uses NVMe IOCTLs to run native nvme commands to a device.
*/
#include "config.h"
#include "nvme/tree.h"
#include "nvme/types.h"
#include <errno.h>
#include <getopt.h>
#include <fcntl.h>
#include <inttypes.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include <dirent.h>
#include <libgen.h>
#include <zlib.h>
#ifdef CONFIG_LIBHUGETLBFS
#include <hugetlbfs.h>
#endif
#include <linux/fs.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#if HAVE_SYS_RANDOM
#include <sys/random.h>
#endif
#include "common.h"
#include "nvme.h"
#include "libnvme.h"
#include "nvme-print.h"
#include "plugin.h"
#include "util/base64.h"
#include "util/argconfig.h"
#include "fabrics.h"
#define CREATE_CMD
#include "nvme-builtin.h"
struct feat_cfg {
enum nvme_features_id feature_id;
__u32 namespace_id;
enum nvme_get_features_sel sel;
__u32 cdw11;
__u8 uuid_index;
__u32 data_len;
int raw_binary;
int human_readable;
};
static struct stat nvme_stat;
const char *devicename;
static const char nvme_version_string[] = NVME_VERSION;
static struct plugin builtin = {
.commands = commands,
.name = NULL,
.desc = NULL,
.next = NULL,
.tail = &builtin,
};
static struct program nvme = {
.name = "nvme",
.version = nvme_version_string,
.usage = "<command> [<device>] [<args>]",
.desc = "The '<device>' may be either an NVMe character "\
"device (ex: /dev/nvme0) or an nvme block device "\
"(ex: /dev/nvme0n1).",
.extensions = &builtin,
};
const char *output_format = "Output format: normal|json|binary";
static const char *output_format_no_binary = "Output format: normal|json";
static void *mmap_registers(nvme_root_t r, const char *dev);
static void *__nvme_alloc(size_t len, bool *huge) {
void *p;
if (!posix_memalign(&p, getpagesize(), len)) {
*huge = false;
memset(p, 0, len);
return p;
}
return NULL;
}
#define HUGE_MIN 0x80000
#ifdef CONFIG_LIBHUGETLBFS
void nvme_free(void *p, bool huge)
{
if (huge) {
if (p)
free_hugepage_region(p);
}
else
free(p);
}
void *nvme_alloc(size_t len, bool *huge)
{
void *p;
if (len < HUGE_MIN)
return __nvme_alloc(len, huge);
p = get_hugepage_region(len, GHR_DEFAULT);
if (!p)
return __nvme_alloc(len, huge);
*huge = true;
return p;
}
#else
void nvme_free(void *p, bool huge)
{
free(p);
}
void *nvme_alloc(size_t len, bool *huge)
{
return __nvme_alloc(len, huge);
}
#endif
const char *nvme_strerror(int errnum)
{
if (errnum >= ENVME_CONNECT_RESOLVE)
return nvme_errno_to_string(errnum);
return strerror(errnum);
}
int map_log_level(int verbose, bool quiet)
{
int log_level;
switch (verbose) {
case 0:
log_level = LOG_WARNING;
break;
case 1:
log_level = LOG_NOTICE;
break;
case 2:
log_level = LOG_INFO;
break;
default:
log_level = LOG_DEBUG;
break;
}
if (quiet)
log_level = LOG_ERR;
return log_level;
}
static ssize_t getrandom_bytes(void *buf, size_t buflen)
{
#if HAVE_SYS_RANDOM
return getrandom(buf, buflen, GRND_NONBLOCK);
#else
ssize_t result;
int fd, err = 0;
fd = open("/dev/urandom", O_RDONLY);
if (fd < 0)
return fd;
result = read(fd, buf, buflen);
if (result < 0)
err = errno;
close(fd);
errno = err;
return result;
#endif
}
static bool is_chardev(void)
{
return S_ISCHR(nvme_stat.st_mode);
}
static bool is_blkdev(void)
{
return S_ISBLK(nvme_stat.st_mode);
}
static int open_dev(char *dev, int flags)
{
int err, fd;
devicename = basename(dev);
err = open(dev, flags);
if (err < 0)
goto perror;
fd = err;
err = fstat(fd, &nvme_stat);
if (err < 0) {
close(fd);
goto perror;
}
if (!is_chardev() && !is_blkdev()) {
fprintf(stderr, "%s is not a block or character device\n", dev);
close(fd);
return -ENODEV;
}
return fd;
perror:
perror(dev);
return err;
}
static int check_arg_dev(int argc, char **argv)
{
if (optind >= argc) {
errno = EINVAL;
perror(argv[0]);
return -EINVAL;
}
return 0;
}
static int get_dev(int argc, char **argv, int flags)
{
int ret;
ret = check_arg_dev(argc, argv);
if (ret)
return ret;
return open_dev(argv[optind], flags);
}
int parse_and_open(int argc, char **argv, const char *desc,
const struct argconfig_commandline_options *opts)
{
int ret;
ret = argconfig_parse(argc, argv, desc, opts);
if (ret)
return ret;
ret = get_dev(argc, argv, O_RDONLY);
if (ret < 0)
argconfig_print_help(desc, opts);
return ret;
}
int open_exclusive(int argc, char **argv, int ignore_exclusive)
{
int flags = O_RDONLY;
if (!ignore_exclusive)
flags |= O_EXCL;
return get_dev(argc, argv, flags);
}
enum nvme_print_flags validate_output_format(const char *format)
{
if (!format)
return -EINVAL;
if (!strcmp(format, "normal"))
return NORMAL;
if (!strcmp(format, "json"))
return JSON;
if (!strcmp(format, "binary"))
return BINARY;
return -EINVAL;
}
static int get_smart_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
struct nvme_smart_log smart_log;
const char *desc = "Retrieve SMART log for the given device "\
"(or optionally a namespace) in either decoded format "\
"(default) or binary.";
const char *namespace = "(optional) desired namespace";
const char *raw = "output in binary format";
const char *human_readable = "show info in readable format";
enum nvme_print_flags flags;
int err = -1, fd;
struct config {
__u32 namespace_id;
int raw_binary;
char *output_format;
int human_readable;
};
struct config cfg = {
.namespace_id = NVME_NSID_ALL,
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_UINT("namespace-id", 'n', &cfg.namespace_id, namespace),
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_FLAG("human-readable", 'H', &cfg.human_readable, human_readable),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
if (cfg.human_readable)
flags |= VERBOSE;
err = nvme_get_log_smart(fd, cfg.namespace_id, true, &smart_log);
if (!err)
nvme_show_smart_log(&smart_log, cfg.namespace_id, devicename,
flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "smart log: %s\n", nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
static int get_ana_log(int argc, char **argv, struct command *cmd,
struct plugin *plugin)
{
const char *desc = "Retrieve ANA log for the given device in " \
"decoded format (default), json or binary.";
void *ana_log;
int err = -1, fd;
int groups = 0; /* Right now get all the per ANA group NSIDS */
size_t ana_log_len;
struct nvme_id_ctrl ctrl;
enum nvme_print_flags flags;
enum nvme_log_ana_lsp lsp;
struct config {
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
err = nvme_identify_ctrl(fd, &ctrl);
if (err) {
fprintf(stderr, "ERROR : nvme_identify_ctrl() failed: %s\n",
nvme_strerror(errno));
goto close_fd;
}
ana_log_len = sizeof(struct nvme_ana_log) +
le32_to_cpu(ctrl.nanagrpid) * sizeof(struct nvme_ana_group_desc);
if (!(ctrl.anacap & (1 << 6)))
ana_log_len += le32_to_cpu(ctrl.mnan) * sizeof(__le32);
ana_log = malloc(ana_log_len);
if (!ana_log) {
err = -ENOMEM;
goto close_fd;
}
lsp = groups ? NVME_LOG_ANA_LSP_RGO_GROUPS_ONLY :
NVME_LOG_ANA_LSP_RGO_NAMESPACES;
err = nvme_get_log_ana(fd, lsp, true, 0, ana_log_len, ana_log);
if (!err) {
nvme_show_ana_log(ana_log, devicename, flags, ana_log_len);
} else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "ana-log: %s", nvme_strerror(errno));
free(ana_log);
close_fd:
close(fd);
ret:
return err;
}
static int get_telemetry_log(int argc, char **argv, struct command *cmd,
struct plugin *plugin)
{
const char *desc = "Retrieve telemetry log and write to binary file";
const char *fname = "File name to save raw binary, includes header";
const char *hgen = "Have the host tell the controller to generate the report";
const char *cgen = "Gather report generated by the controller.";
const char *dgen = "Pick which telemetry data area to report. Default is 3 to fetch areas 1-3. Valid options are 1, 2, 3, 4.";
struct nvme_telemetry_log *log;
int err = 0, fd, output;
size_t total_size;
__u8 *data_ptr = NULL;
int data_written = 0, data_remaining = 0;
struct config {
char *file_name;
__u32 host_gen;
int ctrl_init;
int data_area;
};
struct config cfg = {
.file_name = NULL,
.host_gen = 1,
.ctrl_init = 0,
.data_area = 3,
};
OPT_ARGS(opts) = {
OPT_FILE("output-file", 'o', &cfg.file_name, fname),
OPT_UINT("host-generate", 'g', &cfg.host_gen, hgen),
OPT_FLAG("controller-init", 'c', &cfg.ctrl_init, cgen),
OPT_UINT("data-area", 'd', &cfg.data_area, dgen),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
if (!cfg.file_name) {
fprintf(stderr, "Please provide an output file!\n");
err = -EINVAL;
goto close_fd;
}
cfg.host_gen = !!cfg.host_gen;
output = open(cfg.file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (output < 0) {
fprintf(stderr, "Failed to open output file %s: %s!\n",
cfg.file_name, strerror(errno));
err = output;
goto free_mem;
}
if (cfg.ctrl_init)
err = nvme_get_ctrl_telemetry(fd, true, &log, cfg.data_area, &total_size);
else if (cfg.host_gen)
err = nvme_get_new_host_telemetry(fd, &log, cfg.data_area, &total_size);
else
err = nvme_get_host_telemetry(fd, &log, cfg.data_area, &total_size);
if (err < 0) {
fprintf(stderr, "get-telemetry-log: %s\n",
nvme_strerror(errno));
} else if (err > 0) {
nvme_show_status(err);
fprintf(stderr, "Failed to acquire telemetry log %d!\n", err);
goto close_output;
}
data_written = 0;
data_remaining = total_size;
data_ptr = (__u8 *)log;
while (data_remaining) {
data_written = write(output, data_ptr, data_remaining);
if (data_written < 0) {
data_remaining = data_written;
break;
} else if (data_written <= data_remaining) {
data_remaining -= data_written;
data_ptr += data_written;
} else {
/* Unexpected overwrite */
fprintf(stderr, "Failure: Unexpected telemetry log overwrite - data_remaining = 0x%x, data_written = 0x%x\n",
data_remaining, data_written);
break;
}
}
if (fsync(output) < 0) {
fprintf(stderr, "ERROR : %s: : fsync : %s\n", __func__, strerror(errno));
return -1;
}
close_output:
close(output);
free_mem:
free(log);
close_fd:
close(fd);
ret:
return err;
}
static int get_endurance_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
struct nvme_endurance_group_log endurance_log;
const char *desc = "Retrieves endurance groups log page and prints the log.";
const char *group_id = "The endurance group identifier";
enum nvme_print_flags flags;
int err, fd;
struct config {
char *output_format;
__u16 group_id;
};
struct config cfg = {
.output_format = "normal",
.group_id = 0,
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_SHRT("group-id", 'g', &cfg.group_id, group_id),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
err = nvme_get_log_endurance_group(fd, cfg.group_id, &endurance_log);
if (!err)
nvme_show_endurance_log(&endurance_log, cfg.group_id, devicename, flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "endurance log: %s\n", nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
void collect_effects_log(int fd, enum nvme_csi csi, struct list_head *list, int flags)
{
int err;
nvme_effects_log_node_t *node = malloc(sizeof(nvme_effects_log_node_t));
if (!node)
return;
node->csi = csi;
err = nvme_get_log_cmd_effects(fd, csi, &node->effects);
if (!err) {
list_add(list, &node->node);
return;
}
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "effects log page: %s\n", nvme_strerror(errno));
free(node);
}
static int get_effects_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve command effects log page and print the table.";
const char *raw = "show log in binary format";
const char *human_readable = "show log in readable format";
const char *csi = "";
struct list_head log_pages;
nvme_effects_log_node_t *node;
void *bar = NULL;
int err = -1, fd;
enum nvme_print_flags flags;
struct config {
int raw_binary;
int human_readable;
char *output_format;
int csi;
};
struct config cfg = {
.output_format = "normal",
.csi = -1,
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("human-readable",'H', &cfg.human_readable, human_readable),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_INT("csi", 'c', &cfg.csi, csi),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
if (cfg.human_readable)
flags |= VERBOSE;
list_head_init(&log_pages);
if (cfg.csi < 0) {
nvme_root_t nvme_root;
uint64_t cap;
int nvme_command_set_supported;
int other_command_sets_supported;
nvme_root = nvme_scan(NULL);
bar = mmap_registers(nvme_root, devicename);
nvme_free_tree(nvme_root);
if (!bar) {
goto close_fd;
}
cap = mmio_read64(bar + NVME_REG_CAP);
munmap(bar, getpagesize());
nvme_command_set_supported = NVME_CAP_CSS(cap) & NVME_CAP_CSS_NVM;
other_command_sets_supported = NVME_CAP_CSS(cap) & NVME_CAP_CSS_CSI;
if (nvme_command_set_supported) {
collect_effects_log(fd, NVME_CSI_NVM, &log_pages, flags);
}
if (other_command_sets_supported) {
collect_effects_log(fd, NVME_CSI_ZNS, &log_pages, flags);
}
nvme_print_effects_log_pages(&log_pages, flags);
}
else {
collect_effects_log(fd, cfg.csi, &log_pages, flags);
nvme_print_effects_log_pages(&log_pages, flags);
}
close_fd:
while ((node = list_pop(&log_pages, nvme_effects_log_node_t, node))) {
free(node);
}
close(fd);
ret:
return err;
}
static int get_supported_log_pages(int argc, char **argv, struct command *cmd,
struct plugin *plugin)
{
const char *desc = "Retrieve supported logs and print the table.";
const char *verbose = "Increase output verbosity";
struct nvme_supported_log_pages supports;
int err = -1, fd;
enum nvme_print_flags flags;
struct config {
int verbose;
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("verbose", 'v', &cfg.verbose, verbose),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.verbose)
flags |= VERBOSE;
err = nvme_get_log_supported_log_pages(fd, false, &supports);
if (!err)
nvme_show_supported_log(&supports, devicename, flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "supported log pages: %s",
nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
static int get_error_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve specified number of "\
"error log entries from a given device "\
"in either decoded format (default) or binary.";
const char *log_entries = "number of entries to retrieve";
const char *raw = "dump in binary format";
struct nvme_error_log_page *err_log;
struct nvme_id_ctrl ctrl;
enum nvme_print_flags flags;
int err = -1, fd;
struct config {
__u32 log_entries;
int raw_binary;
char *output_format;
};
struct config cfg = {
.log_entries = 64,
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_UINT("log-entries", 'e', &cfg.log_entries, log_entries),
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
if (!cfg.log_entries) {
fprintf(stderr, "non-zero log-entries is required param\n");
err = -1;
goto close_fd;
}
err = nvme_identify_ctrl(fd, &ctrl);
if (err < 0) {
perror("identify controller");
goto close_fd;
} else if (err) {
fprintf(stderr, "could not identify controller\n");
err = -1;
goto close_fd;
}
cfg.log_entries = min(cfg.log_entries, ctrl.elpe + 1);
err_log = calloc(cfg.log_entries, sizeof(struct nvme_error_log_page));
if (!err_log) {
err = -1;
goto close_fd;
}
err = nvme_get_log_error(fd, cfg.log_entries, true, err_log);
if (!err)
nvme_show_error_log(err_log, cfg.log_entries, devicename, flags);
else if (err > 0)
nvme_show_status(err);
else
perror("error log");
free(err_log);
close_fd:
close(fd);
ret:
return err;
}
static int get_fw_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve the firmware log for the "\
"specified device in either decoded format (default) or binary.";
const char *raw = "use binary output";
struct nvme_firmware_slot fw_log;
enum nvme_print_flags flags;
int err, fd;
struct config {
int raw_binary;
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
err = nvme_get_log_fw_slot(fd, true, &fw_log);
if (!err)
nvme_show_fw_log(&fw_log, devicename, flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "fw log: %s\n", nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
static int get_changed_ns_list_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve Changed Namespaces log for the given device "\
"in either decoded format "\
"(default) or binary.";
const char *raw = "output in binary format";
struct nvme_ns_list changed_ns_list_log;
enum nvme_print_flags flags;
int err, fd;
struct config {
int raw_binary;
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
err = nvme_get_log_changed_ns_list(fd, true, &changed_ns_list_log);
if (!err)
nvme_show_changed_ns_list_log(&changed_ns_list_log, devicename,
flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "changed ns list log: %s\n",
nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
static int get_pred_lat_per_nvmset_log(int argc, char **argv,
struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve Predictable latency per nvm set log "\
"page and prints it for the given device in either decoded " \
"format(default),json or binary.";
const char *nvmset_id = "NVM Set Identifier";
const char *raw = "use binary output";
struct nvme_nvmset_predictable_lat_log plpns_log;
enum nvme_print_flags flags;
int err, fd;
struct config {
__u16 nvmset_id;
char *output_format;
int raw_binary;
};
struct config cfg = {
.nvmset_id = 1,
.output_format = "normal",
};
OPT_ARGS(opts) = {
OPT_SHRT("nvmset-id", 'i', &cfg.nvmset_id, nvmset_id),
OPT_FMT("output-format", 'o', &cfg.output_format, output_format),
OPT_FLAG("raw-binary", 'b', &cfg.raw_binary, raw),
OPT_END()
};
err = fd = parse_and_open(argc, argv, desc, opts);
if (fd < 0)
goto ret;
err = flags = validate_output_format(cfg.output_format);
if (flags < 0)
goto close_fd;
if (cfg.raw_binary)
flags = BINARY;
err = nvme_get_log_predictable_lat_nvmset(fd, cfg.nvmset_id, &plpns_log);
if (!err)
nvme_show_predictable_latency_per_nvmset(&plpns_log,
cfg.nvmset_id, devicename, flags);
else if (err > 0)
nvme_show_status(err);
else
fprintf(stderr, "predictable latency per nvm set: %s\n",
nvme_strerror(errno));
close_fd:
close(fd);
ret:
return err;
}
static int get_pred_lat_event_agg_log(int argc, char **argv,
struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve Predictable Latency Event" \
"Aggregate Log page and prints it, for the given" \
"device in either decoded format(default)," \
"json or binary.";
const char *log_entries = "Number of pending NVM Set" \
"log Entries list";
const char *rae = "Retain an Asynchronous Event";
const char *raw = "use binary output";
enum nvme_print_flags flags;
struct nvme_id_ctrl ctrl;
__u32 log_size;
void *pea_log;
int err, fd;
struct config {
__u64 log_entries;
bool rae;
char *output_format;