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<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>This
is only occurring if the initiator has an active
disk connected to the target. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>The
servers not connected to disks at the target do not have this issue. I can
load/unload connect/disconnect and the initiator driver loads/unloads
accordingly.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=837354423-16052008>Not
sure if this helps.</SPAN></FONT><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=837354423-16052008></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=837354423-16052008></SPAN></FONT></FONT></FONT></FONT> </DIV>
<DIV><FONT face=Tahoma><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=837354423-16052008> </SPAN></FONT></FONT>-----Original
Message-----<BR><B>From:</B> Fab Tillier [mailto:ftillier@windows.microsoft.com]
<BR><B>Sent:</B> Friday, May 16, 2008 4:24 PM<BR><B>To:</B> Sufficool, Stanley;
ofw@lists.openfabrics.org<BR><B>Subject:</B> RE: SRP Target Disconnect still
hangs IPoIB<BR><BR></DIV></FONT></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Probably
a deadlock stalling IBAL’s PnP event callback thread (there’s only one system
wide). IPoIB depends on the PnP event callback to do all its resource
creation/destruction because it generally gets called at DISPATCH_LEVEL and
there’s very little it can do with the HCA driver. The HCA driver’s
design requires blocking for all verb operations despite the hardware
processing commands asynchronously and notifying of their completions form the
DPC.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">-Fab<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
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<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
ofw-bounces@lists.openfabrics.org [mailto:ofw-bounces@lists.openfabrics.org]
<B>On Behalf Of </B>Sufficool, Stanley<BR><B>Sent:</B> Friday, May 16, 2008
4:16 PM<BR><B>To:</B> ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] SRP
Target Disconnect still hangs IPoIB<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Seems that RC4 has
the same issue with SRP hanging other IPoIB when the target quits without the
initiator first performing a clean "Eject" of the target
device.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Reproduced by:
</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Start target (OFED
Gen2 SRPT) </SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Start WinIB
initiators</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Unload target
driver (rmmod ib_srpt)</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">WinIB initiators
IPoIB complains "LAN Conn.. Network Cable Is
Unplugged"</SPAN><o:p></o:p></P></DIV></DIV></BLOCKQUOTE></BODY></HTML>