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<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext">Vishwa,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext">Thanks for replying!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext">Here is our</span><span lang="EN-US"> thought and response.</span><span lang="EN-US" style="color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- Could you help show which section demands this service to be mandatory available per IPMI v2.0 ?</span><span lang="EN-US" style="color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">-> This command is in section 27.7 Get Watchdog Timer Command in IPMI v2.0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- What do you expect IPMI to tell when the host is off ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">We expect that IPMI can tell user the last status of watchdog because we want to let users know which stage of booting failed when host power on failed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">The information we want to know is as follow:<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="color:#4472C4;margin-left:-18.0pt;mso-para-margin-left:0gd;mso-list:l0 level1 lfo1">
<span lang="EN-US">Watchdog Timer Use: Which stage of booting use the watchdog timer.<o:p></o:p></span></li><li class="MsoListParagraph" style="color:#4472C4;margin-left:-18.0pt;mso-para-margin-left:0gd;mso-list:l0 level1 lfo1">
<span lang="EN-US">Watchdog Timer Actions: Watchdog timeout action. <o:p></o:p></span></li><li class="MsoListParagraph" style="color:#4472C4;margin-left:-18.0pt;mso-para-margin-left:0gd;mso-list:l0 level1 lfo1">
<span lang="EN-US">Initial Countdown: Initial time of watchdog timer.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Here is an example of IPMI mc watchdog get response<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Watchdog Timer Use: Reserved (0x80)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Watchdog Timer Is: Stopped<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Watchdog Timer Actions: Hard Reset (0x01)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Pre-timeout interval: 0 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Timer Expiration Flags: 0x00<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Initial Countdown: 30 sec<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#4472C4">Present Countdown: 30 sec<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:windowtext"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;color:windowtext"> vishwa <vishwa@linux.vnet.ibm.com>
<br>
<b>Sent:</b> Tuesday, November 5, 2019 5:18 PM<br>
<b>To:</b> Wayne Tung/WYHQ/Wiwynn <Wayne_Tung@wiwynn.com>; openbmc@lists.ozlabs.org<br>
<b>Subject:</b> Re: BMC can’t get watchdog status by command “mc watchdog get” when system power is off<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p><span lang="EN-US">Wayne,<o:p></o:p></span></p>
<p><span lang="EN-US">Thanks for writing. Here is my thought on this.<o:p></o:p></span></p>
<p><span lang="EN-US">- phosphor-watchdog was meant to time the Host booting, and hence it is getting started where ever it is.<br>
- There are other external users for watchdog ( like bmcweb ). So we need to see if this change affects those.<br>
- Could you help show which section demands this service to be mandatory available per IPMI v2.0 ?<br>
- What do you expect IPMI to tell when the host is off ?<br>
- Lastly, please help push a gerrit review, so we could add comments there.<o:p></o:p></span></p>
<p><span lang="EN-US">Thanks..<o:p></o:p></span></p>
<p><span lang="EN-US">!! Vishwa !!<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US">On 11/5/19 7:09 AM, Wayne Tung/WYHQ/Wiwynn wrote:<o:p></o:p></span></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">Hi,</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">We met an error that BMC can’t get watchdog status by command “mc watchdog get” when system power is off.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">Cause:</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">"ipmitool mc watchdog get" gets dbus properties in path: /xyz/openbmc_project/watchdog/host0 interface: xyz.openbmc_project.State.Watchdog and this dbus object is registered by
phosphor-watchdog.service. </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">Because phosphor-watchdog.service will not be started before system power-on and will be stopped after system power-off, therefore "ipmitool mc watchdog get" command gets nothing
when system power is off.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">Follow the standard, BMC should still report watchdog status even if system power is off.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">So we modified phosphor-watchdog’s bb file and service file to
<br>
1. Start phosphor-watchdog after multi-user.target during BMC boot period</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">2. Do not stop phosphor-watchdog when system power off.
</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">3. Always restart phosphor-watchdog.service.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Test Result:</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus chassis power status</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Chassis Power is off</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus bmc watchdog get</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Use: BIOS FRB2 (0x81)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Is: Stopped</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Actions: No action (0x00)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Pre-timeout interval: 0 seconds</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Timer Expiration Flags: 0x00</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Initial Countdown: 0 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Present Countdown: 0 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus chassis power on</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Chassis Power Control: Up/On</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus bmc watchdog get</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Use: BIOS FRB2 (0xc1)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Is: Started/Running</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Actions: Hard Reset (0x01)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Pre-timeout interval: 0 seconds</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Timer Expiration Flags: 0x00</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Initial Countdown: 600 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Present Countdown: 597 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus bmc watchdog get</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Use: BIOS FRB2 (0xc1)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Is: Started/Running</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Actions: Hard Reset (0x01)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Pre-timeout interval: 0 seconds</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Timer Expiration Flags: 0x00</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Initial Countdown: 600 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Present Countdown: 582 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">wayne@TGA:~$ ipmitool -H 10.248.42.74 -U root -P 0penBmc -I lanplus bmc watchdog get</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Use: BIOS FRB2 (0x81)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Is: Stopped</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Watchdog Timer Actions: No action (0x00)</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Pre-timeout interval: 0 seconds</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Timer Expiration Flags: 0x00</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Initial Countdown: 0 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">Present Countdown: 0 sec</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;background:white">Thanks</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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