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nvme-cli.11833
0003-generate-new-documentation.patch
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File 0003-generate-new-documentation.patch of Package nvme-cli.11833
From eb58f548342f477d02da555cb939b3e6a5609269 Mon Sep 17 00:00:00 2001 From: Keith Busch <keith.busch@intel.com> Date: Fri, 11 Jan 2019 13:58:38 -0700 Subject: [PATCH] generate new documentation For new vendor specific commands. Signed-off-by: Keith Busch <keith.busch@intel.com> --- .../nvme-wdc-clear-pcie-correctable-errors.1 | 71 ++ .../nvme-wdc-clear-pcie-correctable-errors.html | 802 ++++++++++++++ Documentation/nvme-wdc-vs-smart-add-log.1 | 496 +++++++++ Documentation/nvme-wdc-vs-smart-add-log.html | 1136 ++++++++++++++++++++ 4 files changed, 2505 insertions(+) create mode 100644 Documentation/nvme-wdc-clear-pcie-correctable-errors.1 create mode 100644 Documentation/nvme-wdc-clear-pcie-correctable-errors.html create mode 100644 Documentation/nvme-wdc-vs-smart-add-log.1 create mode 100644 Documentation/nvme-wdc-vs-smart-add-log.html diff --git a/Documentation/nvme-wdc-clear-pcie-correctable-errors.1 b/Documentation/nvme-wdc-clear-pcie-correctable-errors.1 new file mode 100644 index 0000000..0dbe83c --- /dev/null +++ b/Documentation/nvme-wdc-clear-pcie-correctable-errors.1 @@ -0,0 +1,71 @@ +'\" t +.\" Title: nvme-wdc-clear-pcie-correctable-errors +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 01/11/2019 +.\" Manual: NVMe Manual +.\" Source: NVMe +.\" Language: English +.\" +.TH "NVME\-WDC\-CLEAR\-PC" "1" "01/11/2019" "NVMe" "NVMe Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +nvme-wdc-clear-pcie-correctable-errors \- Clears the pcie correctable errors field returned in the smart\-log\-add command\&. +.SH "SYNOPSIS" +.sp +.nf +\fInvme wdc clear\-pcie\-correctable\-errors\fR <device> +.fi +.SH "DESCRIPTION" +.sp +For the NVMe device given, sends the wdc vendor unique clear pcie correctable errors command\&. +.sp +The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1)\&. +.sp +This will only work on WDC devices supporting this feature\&. Results for any other device are undefined\&. +.SH "OPTIONS" +.sp +None +.SH "EXAMPLES" +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +Clears the PCIe Correctable Error Count field returned in the smart\-log\-add command: +.sp +.if n \{\ +.RS 4 +.\} +.nf +# nvme wdc clear\-pcie\-correctable\-errors /dev/nvme0 +.fi +.if n \{\ +.RE +.\} +.RE +.SH "NVME" +.sp +Part of the nvme\-user suite diff --git a/Documentation/nvme-wdc-clear-pcie-correctable-errors.html b/Documentation/nvme-wdc-clear-pcie-correctable-errors.html new file mode 100644 index 0000000..37929c6 --- /dev/null +++ b/Documentation/nvme-wdc-clear-pcie-correctable-errors.html @@ -0,0 +1,802 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" + "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> +<head> +<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> +<meta name="generator" content="AsciiDoc 8.6.8" /> +<title>nvme-wdc-clear-pcie-correctable-errors(1)</title> +<style type="text/css"> +/* Shared CSS for AsciiDoc xhtml11 and html5 backends */ + +/* Default font. */ +body { + font-family: Georgia,serif; 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+ } + for (i = 0; i < tocEntriesToRemove.length; i++) { + toc.removeChild(tocEntriesToRemove[i]); + } + + // Rebuild TOC entries. + var entries = tocEntries(document.getElementById("content"), toclevels); + for (var i = 0; i < entries.length; ++i) { + var entry = entries[i]; + if (entry.element.id == "") + entry.element.id = "_toc_" + i; + var a = document.createElement("a"); + a.href = "#" + entry.element.id; + a.appendChild(document.createTextNode(entry.text)); + var div = document.createElement("div"); + div.appendChild(a); + div.className = "toclevel" + entry.toclevel; + toc.appendChild(div); + } + if (entries.length == 0) + toc.parentNode.removeChild(toc); +}, + + +///////////////////////////////////////////////////////////////////// +// Footnotes generator +///////////////////////////////////////////////////////////////////// + +/* Based on footnote generation code from: + * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html + */ + +footnotes: function () { + // Delete existing footnote entries in case we're reloading the footnodes. + var i; 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" + note + "</div>"; + var id =spans[i].getAttribute("id"); + if (id != null) refs["#"+id] = n; + } + } + if (n == 0) + noteholder.parentNode.removeChild(noteholder); + else { + // Process footnoterefs. + for (i=0; i<spans.length; i++) { + if (spans[i].className == "footnoteref") { + var href = spans[i].getElementsByTagName("a")[0].getAttribute("href"); + href = href.match(/#.*/)[0]; // Because IE return full URL. + n = refs[href]; + spans[i].innerHTML = + "[<a href='#_footnote_" + n + + "' title='View footnote' class='footnote'>" + n + "</a>]"; + } + } + } +}, + +install: function(toclevels) { + var timerId; + + function reinstall() { + asciidoc.footnotes(); + if (toclevels) { + asciidoc.toc(toclevels); + } + } + + function reinstallAndRemoveTimer() { + clearInterval(timerId); + reinstall(); + } + + timerId = setInterval(reinstall, 500); + if (document.addEventListener) + document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false); + else + window.onload = reinstallAndRemoveTimer; +} + +} +asciidoc.install(); +/*]]>*/ +</script> +</head> +<body class="manpage"> +<div id="header"> +<h1> +nvme-wdc-clear-pcie-correctable-errors(1) Manual Page +</h1> +<h2>NAME</h2> +<div class="sectionbody"> +<p>nvme-wdc-clear-pcie-correctable-errors - + Clears the pcie correctable errors field returned in the smart-log-add command. +</p> +</div> +</div> +<div id="content"> +<div class="sect1"> +<h2 id="_synopsis">SYNOPSIS</h2> +<div class="sectionbody"> +<div class="verseblock"> +<pre class="content"><em>nvme wdc clear-pcie-correctable-errors</em> <device></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, sends the wdc vendor unique clear pcie +correctable errors command.</p></div> +<div class="paragraph"><p>The <device> parameter is mandatory and may be either the NVMe +character device (ex: /dev/nvme0), or a namespace block device (ex: +/dev/nvme0n1).</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> +</div> +<div class="sect1"> +<h2 id="_options">OPTIONS</h2> +<div class="sectionbody"> +<div class="paragraph"><p>None</p></div> +</div> +</div> +<div class="sect1"> +<h2 id="_examples">EXAMPLES</h2> +<div class="sectionbody"> +<div class="ulist"><ul> +<li> +<p> +Clears the PCIe Correctable Error Count field returned in the smart-log-add command: +</p> +<div class="listingblock"> +<div class="content"> +<pre><code># nvme wdc clear-pcie-correctable-errors /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 2019-01-11 13:56:35 MST +</div> +</div> +</body> +</html> diff --git a/Documentation/nvme-wdc-vs-smart-add-log.1 b/Documentation/nvme-wdc-vs-smart-add-log.1 new file mode 100644 index 0000000..baf5e2c --- /dev/null +++ b/Documentation/nvme-wdc-vs-smart-add-log.1 @@ -0,0 +1,496 @@ +'\" t +.\" Title: nvme-wdc-vs-smart-add-log +.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author] +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 01/11/2019 +.\" Manual: NVMe Manual +.\" Source: NVMe +.\" Language: English +.\" +.TH "NVME\-WDC\-VS\-SMART" "1" "01/11/2019" "NVMe" "NVMe Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +nvme-wdc-vs-smart-add-log \- Send NVMe WDC vs\-smart\-add\-log Vendor Unique Command, return result +.SH "SYNOPSIS" +.sp +.nf +\fInvme wdc vs\-smart\-add\-log\fR <device> [\-\-interval=<NUM>, \-i <NUM>] [\-\-output\-format=<normal|json> \-o <normal|json>] +.fi +.SH "DESCRIPTION" +.sp +For the NVMe device given, send a Vendor Unique WDC vs\-smart\-add\-log command and provide the additional smart log\&. The \-\-interval option will return performance statistics from the specified reporting interval\&. +.sp +The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0)\&. +.sp +This will only work on WDC devices supporting this feature\&. Results for any other device are undefined\&. +.sp +On success it returns 0, error code otherwise\&. +.SH "OPTIONS" +.PP +\-i <NUM>, \-\-interval=<NUM> +.RS 4 +Return the statistics from specific interval, defaults to 14 +.RE +.PP +\-o <format>, \-\-output\-format=<format> +.RS 4 +Set the reporting format to +\fInormal\fR, or +\fIjson\fR\&. Only one output format can be used at a time\&. Default is normal\&. +.RE +.sp +Valid Interval values and description :\- +.TS +allbox tab(:); +ltB ltB. +T{ +Value +T}:T{ +Description +T} +.T& +lt lt +lt lt +lt lt +lt lt +lt lt. +T{ +.sp +\fB1\fR +T}:T{ +.sp +Most recent five (5) minute accumulated set\&. +T} +T{ +.sp +\fB2\-12\fR +T}:T{ +.sp +Previous five (5) minute accumulated sets\&. +T} +T{ +.sp +\fB13\fR +T}:T{ +.sp +The accumulated total of sets 1 through 12 that contain the previous hour of accumulated statistics\&. +T} +T{ +.sp +\fB14\fR +T}:T{ +.sp +The statistical set accumulated since power\-up\&. +T} +T{ +.sp +\fB15\fR +T}:T{ +.sp +The statistical set accumulated during the entire lifetime of the device\&. +T} +.TE +.sp 1 +.SH "CA LOG PAGE DATA OUTPUT EXPLANATION" +.TS +allbox tab(:); +ltB ltB. +T{ +Field +T}:T{ +Description +T} +.T& +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt. +T{ +.sp +\fBPhysical NAND bytes written\&.\fR +T}:T{ +.sp +The number of bytes written to NAND\&. 16 bytes \- hi/lo +T} +T{ +.sp +\fBPhysical NAND bytes read\fR +T}:T{ +.sp +The number of bytes read from NAND\&. 16 bytes \- hi/lo +T} +T{ +.sp +\fBBad NAND Block Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBUncorrectable Read Error Count\fR +T}:T{ +.sp +Total count of NAND reads that were not correctable by read retries, all levels of ECC, or XOR (as applicable)\&. 8 bytes +T} +T{ +.sp +\fBSoft ECC Error Count\fR +T}:T{ +.sp +Total count of NAND reads that were not correctable by read retries, or first\-level ECC\&. 8 bytes +T} +T{ +.sp +\fBSSD End to End Detection Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBSSD End to End Correction Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBSystem Data % Used\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBUser Data Max Erase Count\fR +T}:T{ +.sp +The maximum erase count across all NAND blocks in the drive\&. 4 bytes +T} +T{ +.sp +\fBUser Data Min Erase Count\fR +T}:T{ +.sp +The minimum erase count across all NAND blocks in the drive\&. 4 bytes +T} +T{ +.sp +\fBRefresh Count\fR +T}:T{ +.sp +A count of the number of blocks that have been re\-allocated due to background operations only\&. 8 bytes +T} +T{ +.sp +\fBProgram Fail Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBUser Data Erase Fail Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBSystem Area Erase Fail Count\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBThermal Throttling Status\fR +T}:T{ +.sp +The current status of thermal throttling (enabled or disabled)\&. 2 bytes +T} +T{ +.sp +\fBThermal Throttling Count\fR +T}:T{ +.sp +A count of the number of thermal throttling events\&. 2 bytes +T} +T{ +.sp +\fBPCIe Correctable Error Count\fR +T}:T{ +.sp +Summation counter of all PCIe correctable errors (Bad TLP, Bad DLLP, Receiver error, Replay timeouts, Replay rollovers)\&. 8 bytes +T} +.TE +.sp 1 +.SH "C1 LOG PAGE DATA OUTPUT EXPLANATION" +.TS +allbox tab(:); +ltB ltB. +T{ +Field +T}:T{ +Description +T} +.T& +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt +lt lt. +T{ +.sp +\fBHost Read Commands\fR +T}:T{ +.sp +Number of host read commands received during the reporting period\&. +T} +T{ +.sp +\fBHost Read Blocks\fR +T}:T{ +.sp +Number of 512\-byte blocks requested during the reporting period\&. +T} +T{ +.sp +\fBAverage Read Size\fR +T}:T{ +.sp +Average Read size is calculated using (Host Read Blocks/Host Read Commands)\&. +T} +T{ +.sp +\fBHost Read Cache Hit Commands\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Read Cache Hit Percentage\fR +T}:T{ +.sp +Percentage of host read commands satisfied from the cache\&. +T} +T{ +.sp +\fBHost Read Cache Hit Blocks\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBAverage Read Cache Hit Size\fR +T}:T{ +.sp +Average size of read commands satisfied from the cache\&. +T} +T{ +.sp +\fBHost Read Commands Stalled\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Read Commands Stalled Percentage\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Write Commands\fR +T}:T{ +.sp +Number of host write commands received during the reporting period\&. +T} +T{ +.sp +\fBHost Write Blocks\fR +T}:T{ +.sp +Number of 512\-byte blocks written during the reporting period\&. +T} +T{ +.sp +\fBAverage Write Size\fR +T}:T{ +.sp +Average Write size calculated using (Host Write Blocks/Host Write Commands)\&. +T} +T{ +.sp +\fBHost Write Odd Start Commands\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Write Odd Start Commands Percentage\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Write Odd End Commands\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Write Odd End Commands Percentage\fR +T}:T{ +.sp +Percentage of host write commands that ended on a non\-aligned boundary\&. +T} +T{ +.sp +\fBHost Write Commands Stalled\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBHost Write Commands Stalled Percentage\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBNAND Read Commands\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBNAND Read Blocks\fR +T}:T{ +.sp +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 +T} +T{ +.sp +\fBAverage NAND Read Size\fR +T}:T{ +.sp +Average size of NAND read commands\&. +T} +T{ +.sp +\fBNAND Write Commands\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBNAND Write Blocks\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBAverage NAND Write Size\fR +T}:T{ +.sp +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\&. +T} +T{ +.sp +\fBNAND Read Before Write\fR +T}:T{ +.sp +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\&. +T} +.TE +.sp 1 +.SH "EXAMPLES" +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +Has the program issue WDC vs\-smart\-add\-log Vendor Unique Command with default interval (14) : +.sp +.if n \{\ +.RS 4 +.\} +.nf +# nvme wdc vs\-smart\-add\-log /dev/nvme0 +.fi +.if n \{\ +.RE +.\} +.RE +.SH "NVME" +.sp +Part of the nvme\-user suite\&. diff --git a/Documentation/nvme-wdc-vs-smart-add-log.html b/Documentation/nvme-wdc-vs-smart-add-log.html new file mode 100644 index 0000000..182b9c2 --- /dev/null +++ b/Documentation/nvme-wdc-vs-smart-add-log.html @@ -0,0 +1,1136 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" + "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> +<head> +<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> +<meta name="generator" content="AsciiDoc 8.6.8" /> +<title>nvme-wdc-vs-smart-add-log(1)</title> +<style type="text/css"> +/* Shared CSS for AsciiDoc xhtml11 and html5 backends */ + +/* Default font. */ +body { + font-family: Georgia,serif; 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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 vs-smart-add-log Vendor Unique Command with default interval (14) : +</p> +<div class="listingblock"> +<div class="content"> +<pre><code># nvme wdc vs-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 2019-01-11 13:56:35 MST +</div> +</div> +</body> +</html> -- 2.13.7
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