RE: Device mapper multipathing
Date: Tue, 11 Jan 2011 08:50:57 -0500
Message-ID: <1B861F1ABE40A84AA92AD585B20C558B26EBC56BB3_at_EX7T2-CV06.TDBFG.COM>
Also check point 8 here:
http://christophe.varoqui.free.fr/faq.html
A combination of a configuration setting like Freek suggested and changing a time out value should do it for you.
Rui Amaral
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of D'Hooge Freek
Sent: Tuesday, January 11, 2011 3:45 AM
To: zhuchao_at_gmail.com; Luca.Canali_at_cern.ch
Cc: oracle-l
Subject: RE: Device mapper multipathing
Hi,
Can you post the contents of your /etc/multipath.conf file or the output of multipath -ll Possibly this is just a configuration setting.
Regards,
Freek D'Hooge
Uptime
Oracle Database Administrator
email: freek.dhooge_at_uptime.be
tel +32(0)3 451 23 82
http://www.uptime.be
disclaimer: www.uptime.be/disclaimer
---
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Zhu,Chao
Sent: dinsdag 11 januari 2011 6:59
To: Luca.Canali_at_cern.ch
Cc: oracle-l
Subject: Re: Device mapper multipathing
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;
Thx
On Wed, Nov 29, 2006 at 7:08 PM, Luca Canali <Luca.Canali_at_cern.ch> 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.
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Regards
Zhu Chao
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Received on Tue Jan 11 2011 - 07:50:57 CST