X-MimeOLE: Produced By Microsoft Exchange V6.5
Received: by onstor-exch02.onstor.net 
	id <01C7DF4B.1401D20E@onstor-exch02.onstor.net>; Wed, 15 Aug 2007 06:46:35 -0800
MIME-Version: 1.0
Content-Type: multipart/alternative;
	boundary="----_=_NextPart_001_01C7DF4B.1401D20E"
Content-class: urn:content-classes:message
Subject: RE: FC path recovery
Date: Wed, 15 Aug 2007 06:46:05 -0800
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E02FB25E7@onstor-exch02.onstor.net>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: FC path recovery
Thread-Index: AcfeyO00TbjQUTVMTaO4vqfWJIK4NQAAK4bQABWdXTAACrxoZw==
References: <BB375AF679D4A34E9CA8DFA650E2B04E04FA7ECD@onstor-exch02.onstor.net> <BB375AF679D4A34E9CA8DFA650E2B04E0267A4AE@onstor-exch02.onstor.net> <BB375AF679D4A34E9CA8DFA650E2B04E04FA8013@onstor-exch02.onstor.net>
From: "Bill Nadzam" <bill.nadzam@onstor.com>
To: "Steffen Thuemmel" <steffen.thuemmel@onstor.com>,
	"Sandrine Boulanger" <sandrine.boulanger@onstor.com>,
	"Rich LaReau" <rich.lareau@onstor.com>,
	"dl-cstech" <dl-cstech@onstor.com>

This is a multi-part message in MIME format.

------_=_NextPart_001_01C7DF4B.1401D20E
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

The SCSI Move command is NOT permanent.

________________________________

From: Steffen Thuemmel
Sent: Wed 8/15/2007 4:53 AM
To: Sandrine Boulanger; Rich LaReau; dl-cstech
Subject: RE: FC path recovery



Sandrine,

Is the scsi move command permanent ? What happens after a reboot ? I'd =
guess the auto scsi discovery will "destroy" the scsi move results ?

Regards,=20

=20

st.

=20

Steffen Thuemmel=20

=20

ONStor GmbH

=20

telf.      +49 6102 884 84-0

mobil.     +49 173 673 3434

mail.       steffen.thuemmel@onstor.com =
<mailto:steffen.thuemmel@onstor.com>=20

		_____________________________________________
		From: Sandrine Boulanger
		Sent: Mittwoch, 15. August 2007 01:23
		To: Rich LaReau; dl-cstech
		Subject: RE: FC path recovery

	=09

	=09

		_____________________________________________
		From: Rich LaReau
		Sent: Tuesday, August 14, 2007 4:15 PM
		To: dl-cstech
		Subject: FC path recovery

	=09

		I understand that as a filer discovers luns, it will alternate which =
FC path to take on a per-storage array basis.  So normally we expect =
half the luns to be on each of the two FC ports. =20

		> we should see the paths from both FC ports. If you do a scsi show =
detail on a device, it should show 2 paths

		Now if we lose one path, all the luns move to the surviving port.  =
What happens when the second path is restored? =20

		> it depends how "scsi failback" is set. If enable,  the original path =
will be used when it's restored.


		Do they split up again on their own?  Can I move them back manually?  =
Do I need to offline and rediscover everything in order to get my paths =
redistributed?

		> scsi move command can be used to move luns manually=20

	=09

		Thanks,

		Rich

	=09


------_=_NextPart_001_01C7DF4B.1401D20E
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<HTML dir=3Dltr><HEAD><TITLE>RE: FC path recovery</TITLE>=0A=
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dunicode">=0A=
<META content=3D"MSHTML 6.00.2900.3132" name=3DGENERATOR></HEAD>=0A=
<BODY>=0A=
<DIV id=3DidOWAReplyText64203 dir=3Dltr>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>The SCSI Move =
command is NOT permanent.</FONT></DIV></DIV>=0A=
<DIV dir=3Dltr><BR>=0A=
<HR tabIndex=3D-1>=0A=
<FONT face=3DTahoma size=3D2><B>From:</B> Steffen =
Thuemmel<BR><B>Sent:</B> Wed 8/15/2007 4:53 AM<BR><B>To:</B> Sandrine =
Boulanger; Rich LaReau; dl-cstech<BR><B>Subject:</B> RE: FC path =
recovery<BR></FONT><BR></DIV>=0A=
<DIV>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DCalibri color=3D#1f497d>Sandrine,</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DCalibri color=3D#1f497d>Is the</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us> <FONT face=3DArial =
color=3D#000080 size=3D2>scsi move command</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2> permanent ?</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us> <FONT face=3DArial =
color=3D#000080 size=3D2>What happens after a reboot ? =
I</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DArial color=3D#000080 size=3D2>&#8217;</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2>d guess the auto scsi discovery =
will</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us> <FONT =
face=3DArial color=3D#000080 size=3D2>&#8220;</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2>destroy</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2>&#8221;</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2> the scsi mo</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DArial =
color=3D#000080 size=3D2>ve results ?</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DCalibri =
color=3D#1f497d>Regards,</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us> </SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT =
color=3D#1f497d></FONT></SPAN>&nbsp;</P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DCalibri =
color=3D#1f497d size=3D2>st.</FONT></SPAN></B><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT =
color=3D#1f497d></FONT></SPAN>&nbsp;</P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DCalibri =
color=3D#1f497d size=3D2>Steffen Thuemmel</FONT></SPAN></B><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us> =
</SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT =
color=3D#1f497d></FONT></SPAN>&nbsp;</P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DTahoma =
color=3D#1f497d size=3D1>ONStor GmbH</FONT></SPAN></B><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT =
color=3D#1f497d></FONT></SPAN>&nbsp;</P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DTahoma =
color=3D#1f497d size=3D1>telf.</FONT></SPAN></B><SPAN =
lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B></B></SPAN><B><SPAN =
lang=3Den-us><FONT color=3D#1f497d =
size=3D2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT face=3DTahoma =
color=3D#1f497d size=3D2></FONT></SPAN></B><SPAN =
lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B></B></SPAN><B><SPAN =
lang=3Den-us> <FONT face=3DTahoma color=3D#1f497d size=3D1>+49 6102 884 =
84-0</FONT></SPAN></B><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DTahoma =
color=3D#1f497d size=3D1>mobil. =
&nbsp;&nbsp;&nbsp;</FONT></SPAN></B><SPAN =
lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B></B></SPAN><B><SPAN =
lang=3Den-us> <FONT face=3DTahoma color=3D#1f497d size=3D1>+49 173 673 =
3434</FONT></SPAN></B><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><B><SPAN lang=3Den-us><FONT face=3DTahoma =
color=3D#1f497d =
size=3D1>mail.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN></B><SPAN=
 lang=3Den-us> </SPAN><A =
href=3D"mailto:steffen.thuemmel@onstor.com"><SPAN =
lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B><U></U></B></SPAN><B><U><SPAN lang=3Den-us><FONT =
face=3DTahoma color=3D#0000ff =
size=3D1>steffen.thuemmel@onstor.com</FONT></SPAN></U></B><SPAN =
lang=3Den-us></SPAN></A><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<UL dir=3Dltr>=0A=
<UL dir=3Dltr>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DTahoma =
size=3D2>_____________________________________________<BR></FONT></SPAN><=
SPAN lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B><FONT =
face=3DTahoma size=3D2>From:</FONT></B></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DTahoma size=3D2> =
Sandrine Boulanger<BR></FONT></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B><FONT face=3DTahoma =
size=3D2>Sent:</FONT></B></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DTahoma size=3D2> Mittwoch, 15. August 2007 =
01:23<BR></FONT></SPAN><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B><FONT face=3DTahoma size=3D2>To:</FONT></B></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DTahoma size=3D2> =
Rich LaReau; dl-cstech<BR></FONT></SPAN><SPAN =
lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B><FONT face=3DTahoma =
size=3D2>Subject:</FONT></B></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DTahoma size=3D2> RE: FC path =
recovery</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DTahoma =
size=3D2>_____________________________________________<BR></FONT></SPAN><=
SPAN lang=3Den-us><B></B></SPAN><SPAN lang=3Den-us><B><FONT =
face=3DTahoma size=3D2>From:</FONT></B></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DTahoma size=3D2> =
Rich LaReau<BR></FONT></SPAN><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B><FONT face=3DTahoma =
size=3D2>Sent:</FONT></B></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DTahoma size=3D2> Tuesday, August 14, 2007 4:15 =
PM<BR></FONT></SPAN><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B><FONT face=3DTahoma size=3D2>To:</FONT></B></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT face=3DTahoma size=3D2> =
dl-cstech<BR></FONT></SPAN><SPAN lang=3Den-us><B></B></SPAN><SPAN =
lang=3Den-us><B><FONT face=3DTahoma =
size=3D2>Subject:</FONT></B></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DTahoma size=3D2> FC path =
recovery</FONT></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT face=3DArial size=3D2>I understand =
that as a filer discovers luns, it will alternate which FC path to take =
on a per-storage array basis.&nbsp; So normally we expect half the luns =
to be on each of the two FC ports.&nbsp;</FONT></SPAN><SPAN =
lang=3Den-us></SPAN><SPAN lang=3Den-us> </SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT face=3DArial color=3D#000080 =
size=3D2>&gt; we should see the paths from both FC ports. If you do a =
scsi show detail on a device, it should show 2 paths</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DArial size=3D2>Now if we lose one path, all the luns move to the =
surviving port.&nbsp; What happens when the second path is =
restored?&nbsp;</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us> </SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT face=3DArial color=3D#000080 =
size=3D2>&gt; it depends how &#8220;scsi failback&#8221; is set. If =
enable,&nbsp; the original path will be used when it&#8217;s =
restored.</FONT></SPAN></P><BR>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DArial size=3D2>Do they split up again on their own?&nbsp; Can I =
move them back manually</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DArial color=3D#000080 =
size=3D2>?</FONT></SPAN><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us><FONT face=3DArial size=3D2>&nbsp; Do I need to offline and =
rediscover everything in order to get my paths =
redistributed?</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us><FONT =
face=3DArial color=3D#000080 size=3D2>&gt; scsi move command can be used =
to move luns manually </FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN lang=3Den-us></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT face=3DArial =
size=3D2>Thanks,</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us><FONT face=3DArial =
size=3D2>Rich</FONT></SPAN></P>=0A=
<P dir=3Dltr><SPAN lang=3Den-us></SPAN><SPAN =
lang=3Den-us></SPAN></P></UL></UL></DIV></BODY></HTML>
------_=_NextPart_001_01C7DF4B.1401D20E--
