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Date: Tue, 12 Aug 2008 15:07:08 +0200
From: "Pedro Gonzalez Zamora" <pedroche5@gmail.com>
Subject: Re: [linux-lvm] Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15:
	using /dev/sdah not /dev/sdq Found duplicate PV
	Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not /dev/sdr
	Found duplicate PV v0YURmuRm51dfY8br0Bx7XxOOIJyV6oa: using /dev/sdt no
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Hi Bryan

How can I configure multipathing if I  have scsi enviroment with multiple
paths?

Best

Pedro

2008/8/12 Bryn M. Reeves <bmr@redhat.com>

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Pedro Gonzalez Zamora wrote:
> > Hi all,
> >
> > I'm new in LVM when I execute the command "vgscan -v" I get a message
> below
> > I don't why this message appear
> >
> >
> > Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15: using /dev/sdah not
> > /dev/sdq
> > Found duplicate PV Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not
> > /dev/sdr
> >
> > Anyone Can help me to understand what is the problem and How  can I fix
> it?
> >
> > Bests Regards
> >
> > Pedro G.
>
> Do you have a SAN/fiber/iSCSI environment with multiple paths to the
> storage? If so, then you can configure multipathing and filtering to
> allow LVM to take advantage of the redundant paths to the storage.
>
> If you don't have a multipath environment then you need to figure out
> why these two devices seem to have the same content. Could they have
> been copied (dd, some clever storage mirroring thingamy? broken (split)
> RAID1 mirror?).
>
> Regards,
> Bryn.
>
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> =0GU3
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> _______________________________________________
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> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

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<div dir="ltr">Hi Bryan<br><br>How can I configure multipathing if I&nbsp; have scsi enviroment with multiple paths?<br><br>Best<br><br>Pedro<br><br><div class="gmail_quote">2008/8/12 Bryn M. Reeves <span dir="ltr">&lt;<a href="mailto:bmr@redhat.com">bmr@redhat.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA1<br>
<div><div></div><div class="Wj3C7c"><br>
Pedro Gonzalez Zamora wrote:<br>
&gt; Hi all,<br>
&gt;<br>
&gt; I&#39;m new in LVM when I execute the command &quot;vgscan -v&quot; I get a message below<br>
&gt; I don&#39;t why this message appear<br>
&gt;<br>
&gt;<br>
&gt; Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15: using /dev/sdah not<br>
&gt; /dev/sdq<br>
&gt; Found duplicate PV Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not<br>
&gt; /dev/sdr<br>
&gt;<br>
&gt; Anyone Can help me to understand what is the problem and How &nbsp;can I fix it?<br>
&gt;<br>
&gt; Bests Regards<br>
&gt;<br>
&gt; Pedro G.<br>
<br>
</div></div>Do you have a SAN/fiber/iSCSI environment with multiple paths to the<br>
storage? If so, then you can configure multipathing and filtering to<br>
allow LVM to take advantage of the redundant paths to the storage.<br>
<br>
If you don&#39;t have a multipath environment then you need to figure out<br>
why these two devices seem to have the same content. Could they have<br>
been copied (dd, some clever storage mirroring thingamy? broken (split)<br>
RAID1 mirror?).<br>
<br>
Regards,<br>
Bryn.<br>
<br>
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WB4BOU4CoOlPxs95s6OvNBg=<br>
=0GU3<br>
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<br>
_______________________________________________<br>
linux-lvm mailing list<br>
<a href="mailto:linux-lvm@redhat.com">linux-lvm@redhat.com</a><br>
<a href="https://www.redhat.com/mailman/listinfo/linux-lvm" target="_blank">https://www.redhat.com/mailman/listinfo/linux-lvm</a><br>
read the LVM HOW-TO at <a href="http://tldp.org/HOWTO/LVM-HOWTO/" target="_blank">http://tldp.org/HOWTO/LVM-HOWTO/</a><br>
</blockquote></div><br></div>

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Date: Tue, 12 Aug 2008 09:09:53 -0400
From: "Shawn Hood" <shawnlhood@gmail.com>
Subject: Re: [linux-lvm] Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15:
	using /dev/sdah not /dev/sdq Found duplicate PV
	Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not /dev/sdr
	Found duplicate PV v0YURmuRm51dfY8br0Bx7XxOOIJyV6oa: using /dev/sdt no
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See the following:
http://sources.redhat.com/dm/
http://christophe.varoqui.free.fr/


Shawn

2008/8/12 Pedro Gonzalez Zamora <pedroche5@gmail.com>

> Hi Bryan
>
> How can I configure multipathing if I  have scsi enviroment with multiple
> paths?
>
> Best
>
> Pedro
>
> 2008/8/12 Bryn M. Reeves <bmr@redhat.com>
>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Pedro Gonzalez Zamora wrote:
>> > Hi all,
>> >
>> > I'm new in LVM when I execute the command "vgscan -v" I get a message
>> below
>> > I don't why this message appear
>> >
>> >
>> > Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15: using /dev/sdah not
>> > /dev/sdq
>> > Found duplicate PV Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not
>> > /dev/sdr
>> >
>> > Anyone Can help me to understand what is the problem and How  can I fix
>> it?
>> >
>> > Bests Regards
>> >
>> > Pedro G.
>>
>> Do you have a SAN/fiber/iSCSI environment with multiple paths to the
>> storage? If so, then you can configure multipathing and filtering to
>> allow LVM to take advantage of the redundant paths to the storage.
>>
>> If you don't have a multipath environment then you need to figure out
>> why these two devices seem to have the same content. Could they have
>> been copied (dd, some clever storage mirroring thingamy? broken (split)
>> RAID1 mirror?).
>>
>> Regards,
>> Bryn.
>>
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.7 (GNU/Linux)
>> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
>>
>> iD8DBQFIoXR56YSQoMYUY94RAigRAKCIh7YRDyiXjqK0rIxuBRbUbTHTvACbBoAL
>> WB4BOU4CoOlPxs95s6OvNBg=
>> =0GU3
>> -----END PGP SIGNATURE-----
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>


--
Shawn Hood
910.670.1819 m

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<div dir="ltr">See the following:<br><a href="http://sources.redhat.com/dm/">http://sources.redhat.com/dm/</a><br><a href="http://christophe.varoqui.free.fr/">http://christophe.varoqui.free.fr/</a><br><br><br>Shawn<br><br>
<div class="gmail_quote">2008/8/12 Pedro Gonzalez Zamora <span dir="ltr">&lt;<a href="mailto:pedroche5@gmail.com">pedroche5@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div dir="ltr">Hi Bryan<br><br>How can I configure multipathing if I&nbsp; have scsi enviroment with multiple paths?<br><br>Best<br><br>Pedro<br><br><div class="gmail_quote">2008/8/12 Bryn M. Reeves <span dir="ltr">&lt;<a href="mailto:bmr@redhat.com" target="_blank">bmr@redhat.com</a>&gt;</span><br>

<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA1<br>
<div><div></div><div><br>
Pedro Gonzalez Zamora wrote:<br>
&gt; Hi all,<br>
&gt;<br>
&gt; I&#39;m new in LVM when I execute the command &quot;vgscan -v&quot; I get a message below<br>
&gt; I don&#39;t why this message appear<br>
&gt;<br>
&gt;<br>
&gt; Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15: using /dev/sdah not<br>
&gt; /dev/sdq<br>
&gt; Found duplicate PV Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC: using /dev/sdai not<br>
&gt; /dev/sdr<br>
&gt;<br>
&gt; Anyone Can help me to understand what is the problem and How &nbsp;can I fix it?<br>
&gt;<br>
&gt; Bests Regards<br>
&gt;<br>
&gt; Pedro G.<br>
<br>
</div></div>Do you have a SAN/fiber/iSCSI environment with multiple paths to the<br>
storage? If so, then you can configure multipathing and filtering to<br>
allow LVM to take advantage of the redundant paths to the storage.<br>
<br>
If you don&#39;t have a multipath environment then you need to figure out<br>
why these two devices seem to have the same content. Could they have<br>
been copied (dd, some clever storage mirroring thingamy? broken (split)<br>
RAID1 mirror?).<br>
<br>
Regards,<br>
Bryn.<br>
<br>
-----BEGIN PGP SIGNATURE-----<br>
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<br>
iD8DBQFIoXR56YSQoMYUY94RAigRAKCIh7YRDyiXjqK0rIxuBRbUbTHTvACbBoAL<br>
WB4BOU4CoOlPxs95s6OvNBg=<br>
=0GU3<br>
-----END PGP SIGNATURE-----<br>
<br>
_______________________________________________<br>
linux-lvm mailing list<br>
<a href="mailto:linux-lvm@redhat.com" target="_blank">linux-lvm@redhat.com</a><br>
<a href="https://www.redhat.com/mailman/listinfo/linux-lvm" target="_blank">https://www.redhat.com/mailman/listinfo/linux-lvm</a><br>
read the LVM HOW-TO at <a href="http://tldp.org/HOWTO/LVM-HOWTO/" target="_blank">http://tldp.org/HOWTO/LVM-HOWTO/</a><br>
</blockquote></div><br></div>
<br>_______________________________________________<br>
linux-lvm mailing list<br>
<a href="mailto:linux-lvm@redhat.com">linux-lvm@redhat.com</a><br>
<a href="https://www.redhat.com/mailman/listinfo/linux-lvm" target="_blank">https://www.redhat.com/mailman/listinfo/linux-lvm</a><br>
read the LVM HOW-TO at <a href="http://tldp.org/HOWTO/LVM-HOWTO/" target="_blank">http://tldp.org/HOWTO/LVM-HOWTO/</a><br></blockquote></div><br><br clear="all">--<br>Shawn Hood<br>910.670.1819 m<br><br>
</div>

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From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 12 Aug 2008 14:27:13 +0100
From: "Bryn M. Reeves" <bmr@redhat.com>
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Subject: Re: [linux-lvm] Found duplicate PV 7TGP3THphAvROCTtC4OI2gZrvrAGrn15:
	using /dev/sdah not /dev/sdq Found duplicate PV
	Qbpd3ov1sd3GHCwCQHUzkI00X53lbcDC:
	using /dev/sdai not /dev/sdr Found duplicate PV
	v0YURmuRm51dfY8br0Bx7XxOOIJyV6oa: using /dev/sdt no
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Pedro Gonzalez Zamora wrote:
> Hi Bryan
> 
> How can I configure multipathing if I  have scsi enviroment with multiple
> paths?

As well as the upstream documentation & website, if you are using Red
Hat Enterprise Linux or Fedora (or CentOS), take a look in the Red Hat
knowledge base:

What are the general steps for configuring a dm-multipath?
http://kbase.redhat.com/faq/FAQ_43_13026.shtm

How do I make device mapper multipath ignore my local disks when
generating the multipath maps in Red Hat Enterprise Linux 4?
http://kbase.redhat.com/faq/FAQ_85_7319.shtm

How do I configure device-mapper-multipath with an EMC Clariion SAN?
http://kbase.redhat.com/faq/FAQ_46_8983.shtm

Why I get the message "Found duplicate PV" when when a physical volume,
volume group, or logical volume is created or displayed on the EMC
powerpath or other multipathing device?
http://kbase.redhat.com/faq/FAQ_80_12135.shtm

Regards,
Bryn.

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