nvmeprint.cpp

   1 /*
   2  * nvmeprint.cpp
   3  *
   4  * Home page of code is: http://www.smartmontools.org
   5  *
   6  * Copyright (C) 2016-17 Christian Franke
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2, or (at your option)
  11  * any later version.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * (for example COPYING); If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17
  18 #include "config.h"
  19 #include "nvmeprint.h"
  20
  21 const char * nvmeprint_cvsid = "$Id: nvmeprint.cpp 4580 2017-11-03 19:41:14Z chrfranke $"
  22   NVMEPRINT_H_CVSID;
  23
  24 #include "int64.h"
  25 #include "utility.h"
  26 #include "dev_interface.h"
  27 #include "nvmecmds.h"
  28 #include "atacmds.h" // dont_print_serial_number
  29 #include "scsicmds.h" // dStrHex()
  30 #include "smartctl.h"
  31
  32 using namespace smartmontools;
  33
  34 // Return true if 128 bit LE integer is != 0.
  35 static bool le128_is_non_zero(const unsigned char (& val)[16])
  36 {
  37   for (int i = 0; i < 16; i++) {
  38     if (val[i])
  39       return true;
  40   }
  41   return false;
  42 }
  43
  44 // Format 128 bit integer for printing.
  45 // Add value with SI prefixes if BYTES_PER_UNIT is specified.
  46 static const char * le128_to_str(char (& str)[64], uint64_t hi, uint64_t lo, unsigned bytes_per_unit)
  47 {
  48   if (!hi) {
  49     // Up to 64-bit, print exact value
  50     format_with_thousands_sep(str, sizeof(str)-16, lo);
  51
  52     if (lo && bytes_per_unit && lo < 0xffffffffffffffffULL / bytes_per_unit) {
  53       int i = strlen(str);
  54       str[i++] = ' '; str[i++] = '[';
  55       format_capacity(str+i, (int)sizeof(str)-i-1, lo * bytes_per_unit);
  56       i = strlen(str);
  57       str[i++] = ']'; str[i] = 0;
  58     }
  59   }
  60   else {
  61     // More than 64-bit, print approximate value, prepend ~ flag
  62     snprintf(str, sizeof(str), "~%.0f",
  63              hi * (0xffffffffffffffffULL + 1.0) + lo);
  64   }
  65
  66   return str;
  67 }
  68
  69 // Format 128 bit LE integer for printing.
  70 // Add value with SI prefixes if BYTES_PER_UNIT is specified.
  71 static const char * le128_to_str(char (& str)[64], const unsigned char (& val)[16],
  72   unsigned bytes_per_unit = 0)
  73 {
  74   uint64_t hi = val[15];
  75   for (int i = 15-1; i >= 8; i--) {
  76     hi <<= 8; hi += val[i];
  77   }
  78   uint64_t lo = val[7];
  79   for (int i =  7-1; i >= 0; i--) {
  80     lo <<= 8; lo += val[i];
  81   }
  82   return le128_to_str(str, hi, lo, bytes_per_unit);
  83 }
  84
  85 // Format capacity specified as 64bit LBA count for printing.
  86 static const char * lbacap_to_str(char (& str)[64], uint64_t lba_cnt, int lba_bits)
  87 {
  88   return le128_to_str(str, (lba_cnt >> (64 - lba_bits)), (lba_cnt << lba_bits), 1);
  89 }
  90
  91 // Format a Kelvin temperature value in Celsius.
  92 static const char * kelvin_to_str(char (& str)[64], int k)
  93 {
  94   if (!k) // unsupported?
  95     str[0] = '-', str[1] = 0;
  96   else
  97     snprintf(str, sizeof(str), "%d Celsius", k - 273);
  98   return str;
  99 }
 100
 101 static inline unsigned le16_to_uint(const unsigned char (& val)[2])
 102 {
 103   return ((val[1] << 8) | val[0]);
 104 }
 105
 106 static void print_drive_info(const nvme_id_ctrl & id_ctrl, const nvme_id_ns & id_ns,
 107   unsigned nsid, bool show_all)
 108 {
 109   char buf[64];
 110   pout("Model Number:                       %s\n", format_char_array(buf, id_ctrl.mn));
 111   if (!dont_print_serial_number)
 112     pout("Serial Number:                      %s\n", format_char_array(buf, id_ctrl.sn));
 113   pout("Firmware Version:                   %s\n", format_char_array(buf, id_ctrl.fr));
 114
 115   // Vendor and Subsystem IDs are usually equal
 116   if (show_all || id_ctrl.vid != id_ctrl.ssvid) {
 117     pout("PCI Vendor ID:                      0x%04x\n", id_ctrl.vid);
 118     pout("PCI Vendor Subsystem ID:            0x%04x\n", id_ctrl.ssvid);
 119   }
 120   else {
 121     pout("PCI Vendor/Subsystem ID:            0x%04x\n", id_ctrl.vid);
 122   }
 123
 124   pout("IEEE OUI Identifier:                0x%02x%02x%02x\n",
 125        id_ctrl.ieee[2], id_ctrl.ieee[1], id_ctrl.ieee[0]);
 126
 127   // Capacity info is optional for devices without namespace management
 128   if (show_all || le128_is_non_zero(id_ctrl.tnvmcap) || le128_is_non_zero(id_ctrl.unvmcap)) {
 129     pout("Total NVM Capacity:                 %s\n", le128_to_str(buf, id_ctrl.tnvmcap, 1));
 130     pout("Unallocated NVM Capacity:           %s\n", le128_to_str(buf, id_ctrl.unvmcap, 1));
 131   }
 132
 133   pout("Controller ID:                      %d\n", id_ctrl.cntlid);
 134
 135   // Print namespace info if available
 136   pout("Number of Namespaces:               %u\n", id_ctrl.nn);
 137
 138   if (nsid && id_ns.nsze) {
 139     const char * align = &("  "[nsid < 10 ? 0 : (nsid < 100 ? 1 : 2)]);
 140     int fmt_lba_bits = id_ns.lbaf[id_ns.flbas & 0xf].ds;
 141
 142     // Size and Capacity are equal if thin provisioning is not supported
 143     if (show_all || id_ns.ncap != id_ns.nsze || (id_ns.nsfeat & 0x01)) {
 144       pout("Namespace %u Size:                 %s%s\n", nsid, align,
 145            lbacap_to_str(buf, id_ns.nsze, fmt_lba_bits));
 146       pout("Namespace %u Capacity:             %s%s\n", nsid, align,
 147            lbacap_to_str(buf, id_ns.ncap, fmt_lba_bits));
 148     }
 149     else {
 150       pout("Namespace %u Size/Capacity:        %s%s\n", nsid, align,
 151            lbacap_to_str(buf, id_ns.nsze, fmt_lba_bits));
 152     }
 153     // Utilization may be always equal to Capacity if thin provisioning is not supported
 154     if (show_all || id_ns.nuse != id_ns.ncap || (id_ns.nsfeat & 0x01))
 155       pout("Namespace %u Utilization:          %s%s\n", nsid, align,
 156            lbacap_to_str(buf, id_ns.nuse, fmt_lba_bits));
 157
 158     pout("Namespace %u Formatted LBA Size:   %s%u\n", nsid, align, (1U << fmt_lba_bits));
 159
 160     if (show_all || nonempty(id_ns.eui64, sizeof(id_ns.eui64)))
 161       pout("Namespace %u IEEE EUI-64:          %s%02x%02x%02x %02x%02x%02x%02x%02x\n",
 162            nsid, align, id_ns.eui64[0], id_ns.eui64[1], id_ns.eui64[2], id_ns.eui64[3],
 163            id_ns.eui64[4], id_ns.eui64[5], id_ns.eui64[6], id_ns.eui64[7]);
 164   }
 165
 166   char td[DATEANDEPOCHLEN]; dateandtimezone(td);
 167   pout("Local Time is:                      %s\n", td);
 168 }
 169
 170 // Format scaled power value.
 171 static const char * format_power(char (& str)[16], unsigned power, unsigned scale)
 172 {
 173   switch (scale & 0x3) {
 174     case 0: // not reported
 175       str[0] = '-'; str[1] = ' '; str[2] = 0; break;
 176     case 1: // 0.0001W
 177       snprintf(str, sizeof(str), "%u.%04uW", power / 10000, power % 10000); break;
 178     case 2: // 0.01W
 179       snprintf(str, sizeof(str), "%u.%02uW", power / 100, power % 100); break;
 180     default: // reserved
 181       str[0] = '?'; str[1] = 0; break;
 182   }
 183   return str;
 184 }
 185
 186 static void print_drive_capabilities(const nvme_id_ctrl & id_ctrl, const nvme_id_ns & id_ns,
 187   unsigned nsid, bool show_all)
 188 {
 189   pout("Firmware Updates (0x%02x):            %d Slot%s%s%s\n", id_ctrl.frmw,
 190        ((id_ctrl.frmw >> 1) & 0x7), (((id_ctrl.frmw >> 1) & 0x7) != 1 ? "s" : ""),
 191        ((id_ctrl.frmw & 0x01) ? ", Slot 1 R/O" : ""),
 192        ((id_ctrl.frmw & 0x10) ? ", no Reset required" : ""));
 193
 194   if (show_all || id_ctrl.oacs)
 195     pout("Optional Admin Commands (0x%04x):  %s%s%s%s%s%s%s%s%s%s%s\n", id_ctrl.oacs,
 196          (!id_ctrl.oacs ? " -" : ""),
 197          ((id_ctrl.oacs & 0x0001) ? " Security" : ""),
 198          ((id_ctrl.oacs & 0x0002) ? " Format" : ""),
 199          ((id_ctrl.oacs & 0x0004) ? " Frmw_DL" : ""),
 200          ((id_ctrl.oacs & 0x0008) ? " NS_Mngmt" : ""),
 201          ((id_ctrl.oacs & 0x0010) ? " Self_Test" : ""), // NVMe 1.3 ...
 202          ((id_ctrl.oacs & 0x0020) ? " Directvs" : ""),
 203          ((id_ctrl.oacs & 0x0040) ? " MI_Snd/Rec" : ""),
 204          ((id_ctrl.oacs & 0x0080) ? " Vrt_Mngmt" : ""),
 205          ((id_ctrl.oacs & 0x0100) ? " Drbl_Bf_Cfg" : ""),
 206          ((id_ctrl.oacs & ~0x01ff) ? " *Other*" : ""));
 207
 208   if (show_all || id_ctrl.oncs)
 209     pout("Optional NVM Commands (0x%04x):    %s%s%s%s%s%s%s%s%s\n", id_ctrl.oncs,
 210          (!id_ctrl.oncs ? " -" : ""),
 211          ((id_ctrl.oncs & 0x0001) ? " Comp" : ""),
 212          ((id_ctrl.oncs & 0x0002) ? " Wr_Unc" : ""),
 213          ((id_ctrl.oncs & 0x0004) ? " DS_Mngmt" : ""),
 214          ((id_ctrl.oncs & 0x0008) ? " Wr_Zero" : ""),
 215          ((id_ctrl.oncs & 0x0010) ? " Sav/Sel_Feat" : ""),
 216          ((id_ctrl.oncs & 0x0020) ? " Resv" : ""),
 217          ((id_ctrl.oncs & 0x0040) ? " Timestmp" : ""), // NVMe 1.3
 218          ((id_ctrl.oncs & ~0x007f) ? " *Other*" : ""));
 219
 220   if (id_ctrl.mdts)
 221     pout("Maximum Data Transfer Size:         %u Pages\n", (1U << id_ctrl.mdts));
 222   else if (show_all)
 223     pout("Maximum Data Transfer Size:         -\n");
 224
 225   // Temperature thresholds are optional
 226   char buf[64];
 227   if (show_all || id_ctrl.wctemp)
 228     pout("Warning  Comp. Temp. Threshold:     %s\n", kelvin_to_str(buf, id_ctrl.wctemp));
 229   if (show_all || id_ctrl.cctemp)
 230     pout("Critical Comp. Temp. Threshold:     %s\n", kelvin_to_str(buf, id_ctrl.cctemp));
 231
 232   if (nsid && (show_all || id_ns.nsfeat)) {
 233     const char * align = &("  "[nsid < 10 ? 0 : (nsid < 100 ? 1 : 2)]);
 234     pout("Namespace %u Features (0x%02x):     %s%s%s%s%s%s%s\n", nsid, id_ns.nsfeat, align,
 235          (!id_ns.nsfeat ? " -" : ""),
 236          ((id_ns.nsfeat & 0x01) ? " Thin_Prov" : ""),
 237          ((id_ns.nsfeat & 0x02) ? " NA_Fields" : ""),
 238          ((id_ns.nsfeat & 0x04) ? " Dea/Unw_Error" : ""),
 239          ((id_ns.nsfeat & 0x08) ? " No_ID_Reuse" : ""), // NVMe 1.3
 240          ((id_ns.nsfeat & ~0x0f) ? " *Other*" : ""));
 241   }
 242
 243   // Print Power States
 244   pout("\nSupported Power States\n");
 245   pout("St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat\n");
 246   for (int i = 0; i <= id_ctrl.npss /* 1-based */ && i < 32; i++) {
 247     char p1[16], p2[16], p3[16];
 248     const nvme_id_power_state & ps = id_ctrl.psd[i];
 249     pout("%2d %c %9s %8s %8s %3d %2d %2d %2d %8u %7u\n", i,
 250          ((ps.flags & 0x02) ? '-' : '+'),
 251          format_power(p1, ps.max_power, ((ps.flags & 0x01) ? 1 : 2)),
 252          format_power(p2, ps.active_power, ps.active_work_scale),
 253          format_power(p3, ps.idle_power, ps.idle_scale),
 254          ps.read_lat & 0x1f, ps.read_tput & 0x1f,
 255          ps.write_lat & 0x1f, ps.write_tput & 0x1f,
 256          ps.entry_lat, ps.exit_lat);
 257   }
 258
 259   // Print LBA sizes
 260   if (nsid && id_ns.lbaf[0].ds) {
 261     pout("\nSupported LBA Sizes (NSID 0x%x)\n", nsid);
 262     pout("Id Fmt  Data  Metadt  Rel_Perf\n");
 263     for (int i = 0; i <= id_ns.nlbaf /* 1-based */ && i < 16; i++) {
 264       const nvme_lbaf & lba = id_ns.lbaf[i];
 265       pout("%2d %c %7u %7d %9d\n", i, (i == id_ns.flbas ? '+' : '-'),
 266            (1U << lba.ds), lba.ms, lba.rp);
 267     }
 268   }
 269 }
 270
 271 static void print_critical_warning(unsigned char w)
 272 {
 273   pout("SMART overall-health self-assessment test result: %s\n",
 274        (!w ? "PASSED" : "FAILED!"));
 275
 276   if (w) {
 277    if (w & 0x01)
 278      pout("- available spare has fallen below threshold\n");
 279    if (w & 0x02)
 280      pout("- temperature is above or below threshold\n");
 281    if (w & 0x04)
 282      pout("- NVM subsystem reliability has been degraded\n");
 283    if (w & 0x08)
 284      pout("- media has been placed in read only mode\n");
 285    if (w & 0x10)
 286      pout("- volatile memory backup device has failed\n");
 287    if (w & ~0x1f)
 288      pout("- unknown critical warning(s) (0x%02x)\n", w & ~0x1f);
 289   }
 290
 291   pout("\n");
 292 }
 293
 294 static void print_smart_log(const nvme_smart_log & smart_log, unsigned nsid,
 295   const nvme_id_ctrl & id_ctrl, bool show_all)
 296 {
 297   char buf[64];
 298   pout("SMART/Health Information (NVMe Log 0x02, NSID 0x%x)\n", nsid);
 299   pout("Critical Warning:                   0x%02x\n", smart_log.critical_warning);
 300   pout("Temperature:                        %s\n",
 301        kelvin_to_str(buf, le16_to_uint(smart_log.temperature)));
 302   pout("Available Spare:                    %u%%\n", smart_log.avail_spare);
 303   pout("Available Spare Threshold:          %u%%\n", smart_log.spare_thresh);
 304   pout("Percentage Used:                    %u%%\n", smart_log.percent_used);
 305   pout("Data Units Read:                    %s\n", le128_to_str(buf, smart_log.data_units_read, 1000*512));
 306   pout("Data Units Written:                 %s\n", le128_to_str(buf, smart_log.data_units_written, 1000*512));
 307   pout("Host Read Commands:                 %s\n", le128_to_str(buf, smart_log.host_reads));
 308   pout("Host Write Commands:                %s\n", le128_to_str(buf, smart_log.host_writes));
 309   pout("Controller Busy Time:               %s\n", le128_to_str(buf, smart_log.ctrl_busy_time));
 310   pout("Power Cycles:                       %s\n", le128_to_str(buf, smart_log.power_cycles));
 311   pout("Power On Hours:                     %s\n", le128_to_str(buf, smart_log.power_on_hours));
 312   pout("Unsafe Shutdowns:                   %s\n", le128_to_str(buf, smart_log.unsafe_shutdowns));
 313   pout("Media and Data Integrity Errors:    %s\n", le128_to_str(buf, smart_log.media_errors));
 314   pout("Error Information Log Entries:      %s\n", le128_to_str(buf, smart_log.num_err_log_entries));
 315
 316   // Temperature thresholds are optional
 317   if (show_all || id_ctrl.wctemp || smart_log.warning_temp_time)
 318     pout("Warning  Comp. Temperature Time:    %d\n", smart_log.warning_temp_time);
 319   if (show_all || id_ctrl.cctemp || smart_log.critical_comp_time)
 320     pout("Critical Comp. Temperature Time:    %d\n", smart_log.critical_comp_time);
 321
 322   // Temperature sensors are optional
 323   for (int i = 0; i < 8; i++) {
 324     if (show_all || smart_log.temp_sensor[i])
 325       pout("Temperature Sensor %d:               %s\n", i + 1,
 326            kelvin_to_str(buf, smart_log.temp_sensor[i]));
 327   }
 328   if (show_all || smart_log.thm_temp1_trans_count)
 329     pout("Thermal Temp. 1 Transition Count:   %d\n", smart_log.thm_temp1_trans_count);
 330   if (show_all || smart_log.thm_temp2_trans_count)
 331     pout("Thermal Temp. 2 Transition Count:   %d\n", smart_log.thm_temp2_trans_count);
 332   if (show_all || smart_log.thm_temp1_total_time)
 333     pout("Thermal Temp. 1 Total Time:         %d\n", smart_log.thm_temp1_total_time);
 334   if (show_all || smart_log.thm_temp2_total_time)
 335     pout("Thermal Temp. 2 Total Time:         %d\n", smart_log.thm_temp2_total_time);
 336   pout("\n");
 337 }
 338
 339 static void print_error_log(const nvme_error_log_page * error_log,
 340   unsigned num_entries, unsigned print_entries)
 341 {
 342   pout("Error Information (NVMe Log 0x01, max %u entries)\n", num_entries);
 343
 344   unsigned cnt = 0;
 345   for (unsigned i = 0; i < num_entries; i++) {
 346     const nvme_error_log_page & e = error_log[i];
 347     if (!e.error_count)
 348       continue; // unused or invalid entry
 349     if (++cnt > print_entries)
 350       continue;
 351
 352     if (cnt == 1)
 353       pout("Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS\n");
 354
 355     char sq[16] = "-", cm[16] = "-", st[16] = "-", pe[16] = "-";
 356     char lb[32] = "-", ns[16] = "-", vs[8] = "-";
 357     if (e.sqid != 0xffff)
 358       snprintf(sq, sizeof(sq), "%d", e.sqid);
 359     if (e.cmdid != 0xffff)
 360       snprintf(cm, sizeof(cm), "0x%04x", e.cmdid);
 361     if (e.status_field != 0xffff)
 362       snprintf(st, sizeof(st), "0x%04x", e.status_field);
 363     if (e.parm_error_location != 0xffff)
 364       snprintf(pe, sizeof(pe), "0x%03x", e.parm_error_location);
 365     if (e.lba != 0xffffffffffffffffULL)
 366       snprintf(lb, sizeof(lb), "%" PRIu64, e.lba);
 367     if (e.nsid != 0xffffffffU)
 368       snprintf(ns, sizeof(ns), "%u", e.nsid);
 369     if (e.vs != 0x00)
 370       snprintf(vs, sizeof(vs), "0x%02x", e.vs);
 371
 372     pout("%3u %10" PRIu64 " %5s %7s %7s %6s %12s %5s %5s\n",
 373          i, e.error_count, sq, cm, st, pe, lb, ns, vs);
 374   }
 375
 376   if (!cnt)
 377     pout("No Errors Logged\n");
 378   else if (cnt > print_entries)
 379     pout("... (%u entries not shown)\n", cnt - print_entries);
 380   pout("\n");
 381 }
 382
 383 int nvmePrintMain(nvme_device * device, const nvme_print_options & options)
 384 {
 385   if (!(   options.drive_info || options.drive_capabilities
 386         || options.smart_check_status || options.smart_vendor_attrib
 387         || options.error_log_entries || options.log_page_size       )) {
 388     pout("NVMe device successfully opened\n\n"
 389          "Use 'smartctl -a' (or '-x') to print SMART (and more) information\n\n");
 390     return 0;
 391   }
 392
 393   // Show unset optional values only if debugging is enabled
 394   bool show_all = (nvme_debugmode > 0);
 395
 396   // Read Identify Controller always
 397   nvme_id_ctrl id_ctrl;
 398   if (!nvme_read_id_ctrl(device, id_ctrl)) {
 399     pout("Read NVMe Identify Controller failed: %s\n", device->get_errmsg());
 400     return FAILID;
 401   }
 402
 403   // Print Identify Controller/Namespace info
 404   if (options.drive_info || options.drive_capabilities) {
 405     pout("=== START OF INFORMATION SECTION ===\n");
 406     nvme_id_ns id_ns; memset(&id_ns, 0, sizeof(id_ns));
 407
 408     unsigned nsid = device->get_nsid();
 409     if (nsid == 0xffffffffU) {
 410       // Broadcast namespace
 411       if (id_ctrl.nn == 1) {
 412         // No namespace management, get size from single namespace
 413         nsid = 1;
 414         if (!nvme_read_id_ns(device, nsid, id_ns))
 415           nsid = 0;
 416       }
 417     }
 418     else {
 419         // Identify current namespace
 420         if (!nvme_read_id_ns(device, nsid, id_ns)) {
 421           pout("Read NVMe Identify Namespace 0x%x failed: %s\n", nsid, device->get_errmsg());
 422           return FAILID;
 423         }
 424     }
 425
 426     if (options.drive_info)
 427       print_drive_info(id_ctrl, id_ns, nsid, show_all);
 428     if (options.drive_capabilities)
 429       print_drive_capabilities(id_ctrl, id_ns, nsid, show_all);
 430     pout("\n");
 431   }
 432
 433   if (   options.smart_check_status || options.smart_vendor_attrib
 434       || options.error_log_entries)
 435     pout("=== START OF SMART DATA SECTION ===\n");
 436
 437   // Print SMART Status and SMART/Health Information
 438   int retval = 0;
 439   if (options.smart_check_status || options.smart_vendor_attrib) {
 440     nvme_smart_log smart_log;
 441     if (!nvme_read_smart_log(device, smart_log)) {
 442       pout("Read NVMe SMART/Health Information failed: %s\n\n", device->get_errmsg());
 443       return FAILSMART;
 444     }
 445
 446     if (options.smart_check_status) {
 447       print_critical_warning(smart_log.critical_warning);
 448       if (smart_log.critical_warning)
 449         retval |= FAILSTATUS;
 450     }
 451
 452     if (options.smart_vendor_attrib) {
 453       print_smart_log(smart_log, device->get_nsid(), id_ctrl, show_all);
 454     }
 455   }
 456
 457   // Print Error Information Log
 458   if (options.error_log_entries) {
 459     unsigned num_entries = id_ctrl.elpe + 1; // 0-based value
 460     raw_buffer error_log_buf(num_entries * sizeof(nvme_error_log_page));
 461     nvme_error_log_page * error_log =
 462       reinterpret_cast<nvme_error_log_page *>(error_log_buf.data());
 463
 464     if (!nvme_read_error_log(device, error_log, num_entries)) {
 465       pout("Read Error Information Log failed: %s\n\n", device->get_errmsg());
 466       return retval | FAILSMART;
 467     }
 468
 469     print_error_log(error_log, num_entries, options.error_log_entries);
 470   }
 471
 472   // Dump log page
 473   if (options.log_page_size) {
 474     // Align size to dword boundary
 475     unsigned size = ((options.log_page_size + 4-1) / 4) * 4;
 476     raw_buffer log_buf(size);
 477
 478     if (!nvme_read_log_page(device, options.log_page, log_buf.data(), size)) {
 479       pout("Read NVMe Log 0x%02x failed: %s\n\n", options.log_page, device->get_errmsg());
 480       return retval | FAILSMART;
 481     }
 482
 483     pout("NVMe Log 0x%02x (0x%04x bytes)\n", options.log_page, size);
 484     dStrHex(log_buf.data(), size, 0);
 485     pout("\n");
 486   }
 487
 488   return retval;
 489 }