From: brem belguebli <brem.belguebli@gmail.com>
To: sekharan@linux.vnet.ibm.com,
LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Does LVM have any multipath failover capabilities?
Date: Wed, 2 Sep 2009 15:26:52 +0200 [thread overview]
Message-ID: <29ae894c0909020626g738c5530l19ac0453df868682@mail.gmail.com> (raw)
In-Reply-To: <1251848067.9444.8.camel@chandra-ubuntu>
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Or you could simply use dm-multipath in round-robin fashion without having
to manage priorities etc...
This would bring you :
- More performance if the device at the other side can take the load
- Native failover, if on path dies you'll still have the second path
active.
On LVM point of view, you just have to pvcreate the mutilpath device
(/dev/mapper/mpathX if friendly_user_name true or /dev/mapper/<your disk
UUID>)
Brem
2009/9/2, Chandra Seetharaman <sekharan@us.ibm.com>:
>
>
> On Tue, 2009-09-01 at 17:27 -0600, Chris Worley wrote:
> > For example, two iSCSI drives are actually the same drive provided via
> > two different subnets: if one of the drives becomes unresponsive, I
> > need LVM to seamlessly failover to the other one.
> >
> > Otherwise, what's the right way to handle this?
>
> Build lvm on top of a multipathed device (which comprises of the two
> paths), with a priority callout that gives higher priority to one path
> than the other.
> >
> > Thanks,
> >
> > Chris
> >
> > _______________________________________________
> > 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/
>
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prev parent reply other threads:[~2009-09-02 13:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-01 23:27 [linux-lvm] Does LVM have any multipath failover capabilities? Chris Worley
2009-09-01 23:34 ` Chandra Seetharaman
2009-09-02 13:26 ` brem belguebli [this message]
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