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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-11-20 07:04:39 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-11-20 07:04:39 +0000 |
commit | b8210b1af6dd369a577b2ea2c2fa0f25bffaa3f4 (patch) | |
tree | 0f8475e9ba10b301bd87788e60d1759e8855e414 /Documentation/nvme-wdc-smart-add-log.html | |
parent | Releasing debian version 1.15-4. (diff) | |
download | nvme-cli-b8210b1af6dd369a577b2ea2c2fa0f25bffaa3f4.tar.xz nvme-cli-b8210b1af6dd369a577b2ea2c2fa0f25bffaa3f4.zip |
Merging upstream version 1.16.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/nvme-wdc-smart-add-log.html | 1139 |
1 files changed, 0 insertions, 1139 deletions
diff --git a/Documentation/nvme-wdc-smart-add-log.html b/Documentation/nvme-wdc-smart-add-log.html deleted file mode 100644 index e7f1d50..0000000 --- a/Documentation/nvme-wdc-smart-add-log.html +++ /dev/null @@ -1,1139 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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-nvme-wdc-smart-add-log(1) Manual Page
-</h1>
-<h2>NAME</h2>
-<div class="sectionbody">
-<p>nvme-wdc-smart-add-log -
- Send NVMe WDC smart-add-log Vendor Unique Command, return result
-</p>
-</div>
-</div>
-<div id="content">
-<div class="sect1">
-<h2 id="_synopsis">SYNOPSIS</h2>
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-<pre class="content"><em>nvme wdc smart-add-log</em> <device> [--interval=<NUM>, -i <NUM>] [--output-format=<normal|json> -o <normal|json>]</pre>
-<div class="attribution">
-</div></div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_description">DESCRIPTION</h2>
-<div class="sectionbody">
-<div class="paragraph"><p>For the NVMe device given, send a Vendor Unique WDC smart-add-log command and
-provide the additional smart log. The --interval option will return performance
-statistics from the specified reporting interval.</p></div>
-<div class="paragraph"><p>The <device> parameter is mandatory and may be either the NVMe character
-device (ex: /dev/nvme0).</p></div>
-<div class="paragraph"><p>This will only work on WDC devices supporting this feature.
-Results for any other device are undefined.</p></div>
-<div class="paragraph"><p>On success it returns 0, error code otherwise.</p></div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_options">OPTIONS</h2>
-<div class="sectionbody">
-<div class="dlist"><dl>
-<dt class="hdlist1">
--i <NUM>
-</dt>
-<dt class="hdlist1">
---interval=<NUM>
-</dt>
-<dd>
-<p>
- Return the statistics from specific interval, defaults to 14
-</p>
-</dd>
-<dt class="hdlist1">
--o <format>
-</dt>
-<dt class="hdlist1">
---output-format=<format>
-</dt>
-<dd>
-<p>
- Set the reporting format to <em>normal</em>, or
- <em>json</em>. Only one output format can be used at a time.
- Default is normal.
-</p>
-</dd>
-</dl></div>
-<div class="paragraph"><p>Valid Interval values and description :-</p></div>
-<div class="tableblock">
-<table rules="all"
-style="margin-left:auto; margin-right:auto;"
-width="100%"
-frame="hsides"
-cellspacing="0" cellpadding="4">
-<col width="50%" />
-<col width="50%" />
-<thead>
-<tr>
-<th align="left" valign="top">Value </th>
-<th align="left" valign="top">Description</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>1</strong></p></td>
-<td align="left" valign="top"><p class="table">Most recent five (5) minute accumulated set.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>2-12</strong></p></td>
-<td align="left" valign="top"><p class="table">Previous five (5) minute accumulated sets.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>13</strong></p></td>
-<td align="left" valign="top"><p class="table">The accumulated total of sets 1 through 12 that contain the previous hour of
-accumulated statistics.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>14</strong></p></td>
-<td align="left" valign="top"><p class="table">The statistical set accumulated since power-up.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>15</strong></p></td>
-<td align="left" valign="top"><p class="table">The statistical set accumulated during the entire lifetime of the device.</p></td>
-</tr>
-</tbody>
-</table>
-</div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_ca_log_page_data_output_explanation">CA Log Page Data Output Explanation</h2>
-<div class="sectionbody">
-<div class="tableblock">
-<table rules="all"
-style="margin-left:auto; margin-right:auto;"
-width="100%"
-frame="hsides"
-cellspacing="0" cellpadding="4">
-<col width="50%" />
-<col width="50%" />
-<thead>
-<tr>
-<th align="left" valign="top">Field </th>
-<th align="left" valign="top">Description</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Physical NAND bytes written.</strong></p></td>
-<td align="left" valign="top"><p class="table">The number of bytes written to NAND. 16 bytes - hi/lo</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Physical NAND bytes read</strong></p></td>
-<td align="left" valign="top"><p class="table">The number of bytes read from NAND. 16 bytes - hi/lo</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Bad NAND Block Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Raw and normalized count of the number of NAND blocks that have been
-retired after the drives manufacturing tests (i.e. grown back blocks).
-2 bytes normalized, 6 bytes raw count</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Uncorrectable Read Error Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Total count of NAND reads that were not correctable by read retries, all
-levels of ECC, or XOR (as applicable). 8 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Soft ECC Error Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Total count of NAND reads that were not correctable by read retries, or
-first-level ECC. 8 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>SSD End to End Detection Count</strong></p></td>
-<td align="left" valign="top"><p class="table">A count of the detected errors by the SSD end to end error correction which
-includes DRAM, SRAM, or other storage element ECC/CRC protection mechanism (not
-NAND ECC). 4 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>SSD End to End Correction Count</strong></p></td>
-<td align="left" valign="top"><p class="table">A count of the corrected errors by the SSD end to end error correction which
-includes DRAM, SRAM, or other storage element ECC/CRC protection mechanism (not
-NAND ECC). 4 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>System Data % Used</strong></p></td>
-<td align="left" valign="top"><p class="table">A normalized cumulative count of the number of erase cycles per block since
-leaving the factory for the system (FW and metadata) area. Starts at 0 and
-increments. 100 indicates that the estimated endurance has been consumed.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>User Data Max Erase Count</strong></p></td>
-<td align="left" valign="top"><p class="table">The maximum erase count across all NAND blocks in the drive. 4 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>User Data Min Erase Count</strong></p></td>
-<td align="left" valign="top"><p class="table">The minimum erase count across all NAND blocks in the drive. 4 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Refresh Count</strong></p></td>
-<td align="left" valign="top"><p class="table">A count of the number of blocks that have been re-allocated due to
-background operations only. 8 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Program Fail Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Raw and normalized count of total program failures. Normalized count
-starts at 100 and shows the percent of remaining allowable failures.
-2 bytes normalized, 6 bytes raw count</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>User Data Erase Fail Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Raw and normalized count of total erase failures in the user area.
-Normalized count starts at 100 and shows the percent of remaining
-allowable failures. 2 bytes normalized, 6 bytes raw count</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>System Area Erase Fail Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Raw and normalized count of total erase failures in the system area.
-Normalized count starts at 100 and shows the percent of remaining
-allowable failures. 2 bytes normalized, 6 bytes raw count</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Thermal Throttling Status</strong></p></td>
-<td align="left" valign="top"><p class="table">The current status of thermal throttling (enabled or disabled).
-2 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Thermal Throttling Count</strong></p></td>
-<td align="left" valign="top"><p class="table">A count of the number of thermal throttling events. 2 bytes</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>PCIe Correctable Error Count</strong></p></td>
-<td align="left" valign="top"><p class="table">Summation counter of all PCIe correctable errors (Bad TLP, Bad
-DLLP, Receiver error, Replay timeouts, Replay rollovers). 8 bytes</p></td>
-</tr>
-</tbody>
-</table>
-</div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_c1_log_page_data_output_explanation">C1 Log Page Data Output Explanation</h2>
-<div class="sectionbody">
-<div class="tableblock">
-<table rules="all"
-style="margin-left:auto; margin-right:auto;"
-width="100%"
-frame="hsides"
-cellspacing="0" cellpadding="4">
-<col width="50%" />
-<col width="50%" />
-<thead>
-<tr>
-<th align="left" valign="top">Field </th>
-<th align="left" valign="top">Description</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host read commands received during the reporting period.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Blocks</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of 512-byte blocks requested during the reporting period.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Average Read Size</strong></p></td>
-<td align="left" valign="top"><p class="table">Average Read size is calculated using (Host Read Blocks/Host Read Commands).</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Cache Hit Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host read commands that serviced entirely from the on-board read
-cache during the reporting period. No access to the NAND flash memory was required.
-This count is only updated if the entire command was serviced from the cache memory.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Cache Hit Percentage</strong></p></td>
-<td align="left" valign="top"><p class="table">Percentage of host read commands satisfied from the cache.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Cache Hit Blocks</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of 512-byte blocks of data that have been returned for Host Read Cache Hit
-Commands during the reporting period. This count is only updated with the blocks
-returned for host read commands that were serviced entirely from cache memory.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Average Read Cache Hit Size</strong></p></td>
-<td align="left" valign="top"><p class="table">Average size of read commands satisfied from the cache.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Commands Stalled</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host read commands that were stalled due to a lack of resources within
-the SSD during the reporting period (NAND flash command queue full, low cache page count,
-cache page contention, etc.). Commands are not considered stalled if the only reason for
-the delay was waiting for the data to be physically read from the NAND flash. It is normal
-to expect this count to equal zero on heavily utilized systems.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Read Commands Stalled Percentage</strong></p></td>
-<td align="left" valign="top"><p class="table">Percentage of read commands that were stalled. If the figure is consistently high,
-then consideration should be given to spreading the data across multiple SSDs.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host write commands received during the reporting period.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Blocks</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of 512-byte blocks written during the reporting period.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Average Write Size</strong></p></td>
-<td align="left" valign="top"><p class="table">Average Write size calculated using (Host Write Blocks/Host Write Commands).</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Odd Start Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host write commands that started on a non-aligned boundary during
-the reporting period. The size of the boundary alignment is normally 4K; therefore
-this returns the number of commands that started on a non-4K aligned boundary.
-The SSD requires slightly more time to process non-aligned write commands than it
-does to process aligned write commands.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Odd Start Commands Percentage</strong></p></td>
-<td align="left" valign="top"><p class="table">Percentage of host write commands that started on a non-aligned boundary. If this
-figure is equal to or near 100%, and the NAND Read Before Write value is also high,
-then the user should investigate the possibility of offsetting the file system. For
-Microsoft Windows systems, the user can use Diskpart. For Unix-based operating systems,
-there is normally a method whereby file system partitions can be placed where required.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Odd End Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host write commands that ended on a non-aligned boundary during the
-reporting period. The size of the boundary alignment is normally 4K; therefore this
-returns the number of commands that ended on a non-4K aligned boundary.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Odd End Commands Percentage</strong></p></td>
-<td align="left" valign="top"><p class="table">Percentage of host write commands that ended on a non-aligned boundary.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Commands Stalled</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of host write commands that were stalled due to a lack of resources within the
-SSD during the reporting period. The most likely cause is that the write data was being
-received faster than it could be saved to the NAND flash memory. If there was a large
-volume of read commands being processed simultaneously, then other causes might include
-the NAND flash command queue being full, low cache page count, or cache page contention, etc.
-It is normal to expect this count to be non-zero on heavily utilized systems.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Host Write Commands Stalled Percentage</strong></p></td>
-<td align="left" valign="top"><p class="table">Percentage of write commands that were stalled. If the figure is consistently high, then
-consideration should be given to spreading the data across multiple SSDs.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>NAND Read Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of read commands issued to the NAND devices during the reporting period.
-This figure will normally be much higher than the host read commands figure, as the data
-needed to satisfy a single host read command may be spread across several NAND flash devices.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>NAND Read Blocks</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of 512-byte blocks requested from NAND flash devices during the reporting period.
-This figure would normally be about the same as the host read blocks figure</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Average NAND Read Size</strong></p></td>
-<td align="left" valign="top"><p class="table">Average size of NAND read commands.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>NAND Write Commands</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of write commands issued to the NAND devices during the reporting period.
-There is no real correlation between the number of host write commands issued and the
-number of NAND Write Commands.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>NAND Write Blocks</strong></p></td>
-<td align="left" valign="top"><p class="table">Number of 512-byte blocks written to the NAND flash devices during the reporting period.
-This figure would normally be about the same as the host write blocks figure.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>Average NAND Write Size</strong></p></td>
-<td align="left" valign="top"><p class="table">Average size of NAND write commands. This figure should never be greater than 128K, as
-this is the maximum size write that is ever issued to a NAND device.</p></td>
-</tr>
-<tr>
-<td align="left" valign="top"><p class="table"><strong>NAND Read Before Write</strong></p></td>
-<td align="left" valign="top"><p class="table">This is the number of read before write operations that were required to process
-non-aligned host write commands during the reporting period. See Host Write Odd Start
-Commands and Host Write Odd End Commands. NAND Read Before Write operations have
-a detrimental effect on the overall performance of the device.</p></td>
-</tr>
-</tbody>
-</table>
-</div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_examples">EXAMPLES</h2>
-<div class="sectionbody">
-<div class="ulist"><ul>
-<li>
-<p>
-Has the program issue WDC smart-add-log Vendor Unique Command with default interval (14) :
-</p>
-<div class="listingblock">
-<div class="content">
-<pre><code># nvme wdc smart-add-log /dev/nvme0</code></pre>
-</div></div>
-</li>
-</ul></div>
-</div>
-</div>
-<div class="sect1">
-<h2 id="_nvme">NVME</h2>
-<div class="sectionbody">
-<div class="paragraph"><p>Part of the nvme-user suite.</p></div>
-</div>
-</div>
-</div>
-<div id="footnotes"><hr /></div>
-<div id="footer">
-<div id="footer-text">
-Last updated
- 2018-01-17 20:47:00 KST
-</div>
-</div>
-</body>
-</html>
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