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Old 06-05-2011, 10:55 AM
"Nicolas C."
 
Default Multipath and internal RAID

Hello,

I've installed Red Hat Enterprise Linux 6 on a Dell PowerEdge M610 blade
server connected to a SAN. It works but the internal RAID of the server
(not multipathed) is appearing on the "multipath -ll" output :


mpathc (3600508e000000000108c991ede8ca20f) dm-0 Dell,VIRTUAL DISK
size=136G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
`- 2:1:0:0 sdi 8:128 active ready running

I tried to blacklist it by adding this at the /etc/multipath.conf, but
it has no effect :


blacklist {
wwid 3600508e000000000108c991ede8ca20f
}

I have no problem with RHEL5.

Any idea?

Thanks,

Nicolas

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Old 06-07-2011, 07:29 AM
"Nicoas C."
 
Default Multipath and internal RAID

Le 05/06/2011 12:55, Nicolas C. a écrit :

Hello,

I've installed Red Hat Enterprise Linux 6 on a Dell PowerEdge M610 blade
server connected to a SAN. It works but the internal RAID of the server
(not multipathed) is appearing on the "multipath -ll" output :

mpathc (3600508e000000000108c991ede8ca20f) dm-0 Dell,VIRTUAL DISK
size=136G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
`- 2:1:0:0 sdi 8:128 active ready running

I tried to blacklist it by adding this at the /etc/multipath.conf, but
it has no effect :

blacklist {
wwid 3600508e000000000108c991ede8ca20f
}

I have no problem with RHEL5.


Reply to myself : multipath is loaded early in the boot process, the
multipath.conf is embedded in the initrd.


After changes in the multipath.conf file, initrd must be rebuilded with
"dracut".


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Old 06-09-2011, 10:58 PM
Sanjay Chakraborty
 
Default Multipath and internal RAID

It looks like multipath has been changed significantly in RHEL 6.
Currently our environment is RHEL 5 only and have not tested the new
RHEL 6 yet.
Thanks for the info.

On Tue, Jun 7, 2011 at 3:29 AM, Nicoas C. <rh@nryc.fr> wrote:
> Le 05/06/2011 12:55, Nicolas C. a écrit :
>>
>> Hello,
>>
>> I've installed Red Hat Enterprise Linux 6 on a Dell PowerEdge M610 blade
>> server connected to a SAN. It works but the internal RAID of the server
>> (not multipathed) is appearing on the "multipath -ll" output :
>>
>> mpathc (3600508e000000000108c991ede8ca20f) dm-0 Dell,VIRTUAL DISK
>> size=136G features='0' hwhandler='0' wp=rw
>> `-+- policy='round-robin 0' prio=1 status=active
>> `- 2:1:0:0 sdi 8:128 active ready running
>>
>> I tried to blacklist it by adding this at the /etc/multipath.conf, but
>> it has no effect :
>>
>> blacklist {
>> wwid 3600508e000000000108c991ede8ca20f
>> }
>>
>> I have no problem with RHEL5.
>
> Reply to myself : multipath is loaded early in the boot process, the
> multipath.conf is embedded in the initrd.
>
> After changes in the multipath.conf file, initrd must be rebuilded with
> "dracut".
>
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> redhat-list mailing list
> unsubscribe mailto:redhat-list-request@redhat.com?subject=unsubscribe
> https://www.redhat.com/mailman/listinfo/redhat-list
>



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Sanjay Chakraborty

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