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nvme-cli/0011-nvme-cli-add-netapp-ontapdevices-command.patch

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From 70bfe077af40aeace6c9e2b628b20cf8a34c1def Mon Sep 17 00:00:00 2001
From: Martin George <marting@netapp.com>
Date: Mon, 1 Apr 2019 09:39:56 -0700
Subject: [PATCH] nvme-cli: add netapp ontapdevices command
Add a new ontapdevices command to the NetApp plugin for
NetApp ONTAP devices.
Signed-off-by: Martin George <marting@netapp.com>
Reviewed-by: Steve Schremmer <sschremm@netapp.com>
---
plugins/netapp/netapp-nvme.c | 342 +++++++++++++++++++++++++++++++++++++++++++
plugins/netapp/netapp-nvme.h | 1 +
2 files changed, 343 insertions(+)
diff --git a/plugins/netapp/netapp-nvme.c b/plugins/netapp/netapp-nvme.c
index 416e74e..2951311 100644
--- a/plugins/netapp/netapp-nvme.c
+++ b/plugins/netapp/netapp-nvme.c
@@ -21,6 +21,7 @@
#include <unistd.h>
#include <errno.h>
#include <string.h>
+#include <sys/ioctl.h>
#include "nvme.h"
#include "nvme-ioctl.h"
@@ -31,12 +32,28 @@
#define CREATE_CMD
#include "netapp-nvme.h"
+#define ONTAP_C2_LOG_ID 0xC2
+#define ONTAP_C2_LOG_SIZE 4096
+#define ONTAP_LABEL_LEN 260
+#define ONTAP_NS_PATHLEN 520
+
enum {
NNORMAL,
NJSON,
NCOLUMN,
};
+enum {
+ ONTAP_C2_LOG_SUPPORTED_LSP = 0x0,
+ ONTAP_C2_LOG_NSINFO_LSP = 0x1,
+};
+
+enum {
+ ONTAP_VSERVER_TLV = 0x11,
+ ONTAP_VOLUME_TLV = 0x12,
+ ONTAP_NS_TLV = 0x13,
+};
+
static const char *dev_path = "/dev/";
struct smdevice_info {
@@ -46,6 +63,15 @@ struct smdevice_info {
char dev[265];
};
+struct ontapdevice_info {
+ int nsid;
+ struct nvme_id_ctrl ctrl;
+ struct nvme_id_ns ns;
+ char nsdesc[4096];
+ unsigned char log_data[ONTAP_C2_LOG_SIZE];
+ char dev[265];
+};
+
#define ARRAY_LABEL_LEN 60
#define VOLUME_LABEL_LEN 60
@@ -77,6 +103,100 @@ static void netapp_nguid_to_str(char *str, __u8 *nguid)
str += sprintf(str, "%02x", nguid[i]);
}
+static void netapp_get_ns_size(char *size, long long *lba,
+ struct nvme_id_ns *ns)
+{
+ *lba = 1 << ns->lbaf[(ns->flbas & 0x0F)].ds;
+ double nsze = le64_to_cpu(ns->nsze) * (*lba);
+ const char *s_suffix = suffix_si_get(&nsze);
+
+ sprintf(size, "%.2f%sB", nsze, s_suffix);
+}
+
+static void netapp_uuid_to_str(char *str, void *data)
+{
+#ifdef LIBUUID
+ uuid_t uuid;
+ struct nvme_ns_id_desc *desc = data;
+
+ memcpy(uuid, data + sizeof(*desc), 16);
+ uuid_unparse_lower(uuid, str);
+#endif
+}
+
+static void ontap_labels_to_str(char *dst, char *src, int count)
+{
+ int i;
+
+ memset(dst, 0, ONTAP_LABEL_LEN);
+ for (i = 0; i < count; i++) {
+ if (src[i] >= '!' && src[i] <= '~')
+ dst[i] = src[i];
+ else
+ break;
+ }
+ dst[i] = '\0';
+}
+
+static void netapp_get_ontap_labels(char *vsname, char *nspath,
+ unsigned char *log_data)
+{
+ int lsp, tlv, label_len;
+ char *vserver_name, *volume_name, *namespace_name;
+ char vol_name[ONTAP_LABEL_LEN], ns_name[ONTAP_LABEL_LEN];
+ const char *ontap_vol = "/vol/";
+ int i, j;
+
+ /* get the lsp */
+ lsp = (*(__u8 *)&log_data[16]) & 0x0F;
+ if (lsp != ONTAP_C2_LOG_NSINFO_LSP)
+ /* lsp not related to nsinfo */
+ return;
+
+ /* get the vserver tlv and name */
+ tlv = *(__u8 *)&log_data[32];
+ if (tlv == ONTAP_VSERVER_TLV) {
+ label_len = (*(__u16 *)&log_data[34]) * 4;
+ vserver_name = (char *)&log_data[36];
+ ontap_labels_to_str(vsname, vserver_name, label_len);
+ } else {
+ /* not the expected vserver tlv */
+ fprintf(stderr, "Unable to fetch ONTAP vserver name\n");
+ return;
+ }
+
+ i = 36 + label_len;
+ j = i + 2;
+ /* get the volume tlv and name */
+ tlv = *(__u8 *)&log_data[i];
+ if (tlv == ONTAP_VOLUME_TLV) {
+ label_len = (*(__u16 *)&log_data[j]) * 4;
+ volume_name = (char *)&log_data[j + 2];
+ ontap_labels_to_str(vol_name, volume_name, label_len);
+ } else {
+ /* not the expected volume tlv */
+ fprintf(stderr, "Unable to fetch ONTAP volume name\n");
+ return;
+ }
+
+ i += 4 + label_len;
+ j += 4 + label_len;
+ /* get the namespace tlv and name */
+ tlv = *(__u8 *)&log_data[i];
+ if (tlv == ONTAP_NS_TLV) {
+ label_len = (*(__u16 *)&log_data[j]) * 4;
+ namespace_name = (char *)&log_data[j + 2];
+ ontap_labels_to_str(ns_name, namespace_name, label_len);
+ } else {
+ /* not the expected namespace tlv */
+ fprintf(stderr, "Unable to fetch ONTAP namespace name\n");
+ return;
+ }
+
+ snprintf(nspath, ONTAP_NS_PATHLEN, "%s%s%s%s", ontap_vol,
+ vol_name, "/", ns_name);
+}
+
static void netapp_smdevice_json(struct json_array *devices, char *devname,
char *arrayname, char *volname, int nsid, char *nguid,
char *ctrl, char *astate, char *size, long long lba,
@@ -99,6 +219,25 @@ static void netapp_smdevice_json(struct json_array *devices, char *devname,
json_array_add_value_object(devices, device_attrs);
}
+static void netapp_ontapdevice_json(struct json_array *devices, char *devname,
+ char *vsname, char *nspath, int nsid, char *uuid,
+ char *size, long long lba, long long nsze)
+{
+ struct json_object *device_attrs;
+
+ device_attrs = json_create_object();
+ json_object_add_value_string(device_attrs, "Device", devname);
+ json_object_add_value_string(device_attrs, "Vserver", vsname);
+ json_object_add_value_string(device_attrs, "Namespace_Path", nspath);
+ json_object_add_value_int(device_attrs, "NSID", nsid);
+ json_object_add_value_string(device_attrs, "UUID", uuid);
+ json_object_add_value_string(device_attrs, "Size", size);
+ json_object_add_value_int(device_attrs, "LBA_Data_Size", lba);
+ json_object_add_value_int(device_attrs, "Namespace_Size", nsze);
+
+ json_array_add_value_object(devices, device_attrs);
+}
+
static void netapp_smdevices_print(struct smdevice_info *devices, int count, int format)
{
struct json_object *root = NULL;
@@ -161,6 +300,94 @@ static void netapp_smdevices_print(struct smdevice_info *devices, int count, int
}
}
+static void netapp_ontapdevices_print(struct ontapdevice_info *devices,
+ int count, int format)
+{
+ struct json_object *root = NULL;
+ struct json_array *json_devices = NULL;
+ char vsname[ONTAP_LABEL_LEN] = " ";
+ char nspath[ONTAP_NS_PATHLEN] = " ";
+ long long lba;
+ char size[128];
+ char uuid_str[37] = " ";
+ int i;
+
+ char basestr[] = "%s, Vserver %s, Namespace Path %s, NSID %d, UUID %s, %s\n";
+ char columnstr[] = "%-16s %-25s %-50s %-4d %-38s %-9s\n";
+
+ /* default to 'normal' output format */
+ char *formatstr = basestr;
+
+ if (format == NCOLUMN) {
+ /* change output string and print column headers */
+ formatstr = columnstr;
+ printf("%-16s %-25s %-50s %-4s %-38s %-9s\n",
+ "Device", "Vserver", "Namespace Path",
+ "NSID", "UUID", "Size");
+ printf("%-16s %-25s %-50s %-4s %-38s %-9s\n",
+ "----------------", "-------------------------",
+ "--------------------------------------------------",
+ "----", "--------------------------------------",
+ "---------");
+ } else if (format == NJSON) {
+ /* prepare for json output */
+ root = json_create_object();
+ json_devices = json_create_array();
+ }
+
+ for (i = 0; i < count; i++) {
+
+ netapp_get_ns_size(size, &lba, &devices[i].ns);
+ netapp_uuid_to_str(uuid_str, devices[i].nsdesc);
+ netapp_get_ontap_labels(vsname, nspath, devices[i].log_data);
+
+ if (format == NJSON) {
+ netapp_ontapdevice_json(json_devices, devices[i].dev,
+ vsname, nspath, devices[i].nsid,
+ uuid_str, size, lba,
+ le64_to_cpu(devices[i].ns.nsze));
+ } else
+ printf(formatstr, devices[i].dev, vsname, nspath,
+ devices[i].nsid, uuid_str, size);
+ }
+
+ if (format == NJSON) {
+ /* complete the json output */
+ json_object_add_value_array(root, "ONTAPdevices", json_devices);
+ json_print_object(root, NULL);
+ }
+}
+
+static int nvme_get_ontap_c2_log(int fd, __u32 nsid, void *buf, __u32 buflen)
+{
+ struct nvme_admin_cmd get_log;
+ int err;
+
+ memset(buf, 0, buflen);
+ memset(&get_log, 0, sizeof(struct nvme_admin_cmd));
+
+ get_log.opcode = nvme_admin_get_log_page;
+ get_log.nsid = nsid;
+ get_log.addr = (__u64)(uintptr_t)buf;
+ get_log.data_len = buflen;
+
+ __u32 numd = (get_log.data_len >> 2) - 1;
+ __u32 numdu = numd >> 16;
+ __u32 numdl = numd & 0xFFFF;
+
+ get_log.cdw10 = ONTAP_C2_LOG_ID | (numdl << 16);
+ get_log.cdw10 |= ONTAP_C2_LOG_NSINFO_LSP << 8;
+ get_log.cdw11 = numdu;
+
+ err = nvme_submit_passthru(fd, NVME_IOCTL_ADMIN_CMD, &get_log);
+ if (err) {
+ fprintf(stderr, "ioctl error %0x\n", err);
+ return 1;
+ }
+
+ return 0;
+}
+
static int netapp_smdevices_get_info(int fd, struct smdevice_info *item,
const char *dev)
{
@@ -188,6 +415,50 @@ static int netapp_smdevices_get_info(int fd, struct smdevice_info *item,
return 1;
}
+static int netapp_ontapdevices_get_info(int fd, struct ontapdevice_info *item,
+ const char *dev)
+{
+ int err;
+
+ err = nvme_identify_ctrl(fd, &item->ctrl);
+ if (err) {
+ fprintf(stderr, "Identify Controller failed to %s (%s)\n",
+ dev, strerror(err));
+ return 0;
+ }
+
+ if (strncmp("NetApp ONTAP Controller", item->ctrl.mn, 23) != 0)
+ /* not the right controller model */
+ return 0;
+
+ item->nsid = nvme_get_nsid(fd);
+
+ err = nvme_identify_ns(fd, item->nsid, 0, &item->ns);
+ if (err) {
+ fprintf(stderr, "Unable to identify namespace for %s (%s)\n",
+ dev, strerror(err));
+ return 0;
+ }
+
+ err = nvme_identify_ns_descs(fd, item->nsid, item->nsdesc);
+ if (err) {
+ fprintf(stderr, "Unable to identify namespace descriptor for %s (%s)\n",
+ dev, strerror(err));
+ return 0;
+ }
+
+ err = nvme_get_ontap_c2_log(fd, item->nsid, item->log_data, ONTAP_C2_LOG_SIZE);
+ if (err) {
+ fprintf(stderr, "Unable to get log page data for %s (%s)\n",
+ dev, strerror(err));
+ return 0;
+ }
+
+ strncpy(item->dev, dev, sizeof(item->dev));
+
+ return 1;
+}
+
static int netapp_nvme_filter(const struct dirent *d)
{
char path[264];
@@ -294,3 +565,74 @@ static int netapp_smdevices(int argc, char **argv, struct command *command,
free(smdevices);
return 0;
}
+
+/* handler for 'nvme netapp ontapdevices' */
+static int netapp_ontapdevices(int argc, char **argv, struct command *command,
+ struct plugin *plugin)
+{
+ const char *desc = "Display information about ONTAP devices.";
+ struct config {
+ char *output_format;
+ };
+ struct config cfg = {
+ .output_format = "normal",
+ };
+ struct dirent **devices;
+ int num, i, fd, ret, fmt;
+ struct ontapdevice_info *ontapdevices;
+ char path[264];
+ int num_ontapdevices = 0;
+
+ const struct argconfig_commandline_options opts[] = {
+ {"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format,
+ required_argument, "Output Format: normal|json|column"},
+ {NULL}
+ };
+
+ ret = argconfig_parse(argc, argv, desc, opts, &cfg, sizeof(cfg));
+ if (ret < 0)
+ return ret;
+
+ fmt = netapp_output_format(cfg.output_format);
+ if (fmt != NNORMAL && fmt != NCOLUMN && fmt != NJSON) {
+ fprintf(stderr, "Unrecognized output format: %s\n", cfg.output_format);
+ return -EINVAL;
+ }
+
+ num = scandir(dev_path, &devices, netapp_nvme_filter, alphasort);
+ if (num <= 0) {
+ fprintf(stderr, "No NVMe devices detected.\n");
+ return num;
+ }
+
+ ontapdevices = calloc(num, sizeof(*ontapdevices));
+ if (!ontapdevices) {
+ fprintf(stderr, "Unable to allocate memory for devices.\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < num; i++) {
+ snprintf(path, sizeof(path), "%s%s", dev_path,
+ devices[i]->d_name);
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Unable to open %s: %s\n", path,
+ strerror(errno));
+ continue;
+ }
+
+ num_ontapdevices += netapp_ontapdevices_get_info(fd,
+ &ontapdevices[num_ontapdevices], path);
+
+ close(fd);
+ }
+
+ if (num_ontapdevices)
+ netapp_ontapdevices_print(ontapdevices, num_ontapdevices, fmt);
+
+ for (i = 0; i < num; i++)
+ free(devices[i]);
+ free(devices);
+ free(ontapdevices);
+ return 0;
+}
diff --git a/plugins/netapp/netapp-nvme.h b/plugins/netapp/netapp-nvme.h
index 3dd019e..d4eebd6 100644
--- a/plugins/netapp/netapp-nvme.h
+++ b/plugins/netapp/netapp-nvme.h
@@ -9,6 +9,7 @@
PLUGIN(NAME("netapp", "NetApp vendor specific extensions"),
COMMAND_LIST(
ENTRY("smdevices", "NetApp SMdevices", netapp_smdevices)
+ ENTRY("ontapdevices", "NetApp ONTAPdevices", netapp_ontapdevices)
)
);
--
2.16.4
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