Re: Device mapper multipathing

From: Zhu,Chao <>
Date: Tue, 11 Jan 2011 13:58:35 +0800
Message-ID: <>

not sure if anyone else has updated this thread since it was posted; We ran into issue of delayed path failover (when one path dies/disabled, all IO hang for 30sec-2 min);
it wasn't that optimal to have that time IO totally freezed;

We were using redhat 5.4 and also tried oracle enterprise kernel;

Would be great to hear more inputs;


On Wed, Nov 29, 2006 at 7:08 PM, Luca Canali <> wrote:

> Hi,
> Is anybody who has used device mapper for Linux willing to share their
> experience?
> I have been using Qlogic multipathing so far with the qla2300_conf
> module on RHEL3. No problem with it, but I am moving to RHEL4 and the
> needed qla2xxx_conf module is missing from their rmps distribution. So
> instead I have done a few tests with device mapper multipathing, seems
> to work fine so far, but nothing can beat real world experience.
> Thanks,
> L.
> --

Zhu Chao

Received on Mon Jan 10 2011 - 23:58:35 CST

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