[CentOS] SAN help

Per Qvindesland per at norhex.com
Fri Jan 8 16:09:42 UTC 2010


Hmm it could be worth checking the fc switch log also if you get stuck.

Per

Sent from my iPhone

On 8 Jan 2010, at 15:37, Paras pradhan <pradhanparas at gmail.com> wrote:

> Per,
>
> Yes I have a device mapper out of my detected LUNS. My storage is  
> Hitachi OpenV . My multipath.conf files looks like below. Do I need  
> to add anything to it since failover is not working. When I unplugg  
> the cable in the 1st port of my HBA... my server reboots and I don't  
> know what is causing this reboot. And after reboot when I plug the  
> cable back, no recovery is done and to make it work I have to reboot  
> the server once again with cable plugged.
>
> --
> blacklist {
> 	devnode "^sda"
> }
>
> defaults {
> 	user_friendly_names yes
> 	failback immediate
> }
> -------
>
>
> Thanks
> Paras
>
>
> On Fri, Jan 8, 2010 at 4:42 AM, Per Qvindesland <per at norhex.com>  
> wrote:
> Hi
>
> For sure no problems, I see this about everyday, the major reason is  
> that the rh driver is not certified for use with Dell,HP or IBM for  
> that matter, if we get a support request where I work and the RH  
> driver is used for the qlogic card then customer must install the  
> certified driver from the vendor, this has a lot to do with  
> compabillity with the bios etc, I am not saying that the RH driver  
> is bad it is just unsupported by most vendors.
>
> Regards
> Per
>
>
> At Fredag, 08-01-2010 on 11:06 "Alexander Dalloz" <ad+lists at uni- 
> x.org> wrote:
> > Hi
> >
> > Not sure if you have done this already but install multipath as  
> the os
> > sees multiple presented luns which needs to be tied up to one by
> > multipath also do not use the rh drivers for you qlogic it's not
> > recommended at all for any storage solutions.
> >
> > Per
>
> Dear Per,
>
> can you please elaborate why the QLogic kernel module shipping with  
> CentOS
> 5 / RHEL 5 is not recommended? It for sure is documented to be used at
> least in the NetApp host utilities guide, without any warning to  
> prefer
> the driver package provided on the QLogic site. And I do not see any
> problem using it with CentOS / RHEL 5 device-mapper-multipath on a  
> lot of
> systems.
>
> Regards
>
> Alexander
>
>
>
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