RDAC 09.01.B5.55 with RHEL4 reboot time

RDAC 09.01.B5.55 with RHEL4 reboot time

[Voiper]

Dear,

Sorry if this is not the proper list, but I have seen people here
talking about RDAC, and some of them are IBM engineers.

We have a linux RHEL4 cluster connected to DS4800
We have RDAC version 09.01.B5.55, and Qlogic 2300 drivers, kernel
2.6.9-42.ELsmp.
We have noticed that the reboot might take 30 minutes, while with RDAC
version 09.01.B5.30 it takes much shorter time.

Anyone has experienced this before ??

Re: RDAC 09.01.B5.55 with RHEL4 reboot time

[Chandra Seetharaman]

Hi,

The RDAC driver you are referring to is an independent driver that
supports DS4K.

Whereas the RDAC driver being talked in this mailing list works under
DM-Multipath.

Please contact your IBM contacts w.r.t the differences in behavior w.r.t
the different RDAC driver versions you have.

regards,

chandra
On Mon, 2007-10-01 at 15:40 +0300, Voiper wrote:
> Dear,
> 
> Sorry if this is not the proper list, but I have seen people here
> talking about RDAC, and some of them are IBM engineers.
> 
> We have a linux RHEL4 cluster connected to DS4800
> We have RDAC version 09.01.B5.55, and Qlogic 2300 drivers, kernel
> 2.6.9-42.ELsmp.
> We have noticed that the reboot might take 30 minutes, while with RDAC
> version 09.01.B5.30 it takes much shorter time.
> 
> Anyone has experienced this before ??
> 
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@us.ibm.com   |      .......you may get it.
----------------------------------------------------------------------

Re: RDAC 09.01.B5.55 with RHEL4 reboot time

[Voiper]

Sorry, you mean there are two different RDAC products ???

On 10/1/07, Chandra Seetharaman <sekharan@us.ibm.com> wrote:
> Hi,
>
> The RDAC driver you are referring to is an independent driver that
> supports DS4K.
>
> Whereas the RDAC driver being talked in this mailing list works under
> DM-Multipath.
>
> Please contact your IBM contacts w.r.t the differences in behavior w.r.t
> the different RDAC driver versions you have.
>
> regards,
>
> chandra
> On Mon, 2007-10-01 at 15:40 +0300, Voiper wrote:
> > Dear,
> >
> > Sorry if this is not the proper list, but I have seen people here
> > talking about RDAC, and some of them are IBM engineers.
> >
> > We have a linux RHEL4 cluster connected to DS4800
> > We have RDAC version 09.01.B5.55, and Qlogic 2300 drivers, kernel
> > 2.6.9-42.ELsmp.
> > We have noticed that the reboot might take 30 minutes, while with RDAC
> > version 09.01.B5.30 it takes much shorter time.
> >
> > Anyone has experienced this before ??
> >
> > --
> > dm-devel mailing list
> > dm-devel@redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> --
>
> ----------------------------------------------------------------------
>     Chandra Seetharaman               | Be careful what you choose....
>               - sekharan@us.ibm.com   |      .......you may get it.
> ----------------------------------------------------------------------
>
>
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>

Re: RDAC 09.01.B5.55 with RHEL4 reboot time

[Hannes Reinecke]

Voiper wrote:
> Sorry, you mean there are two different RDAC products ???
> 
Correct.

> On 10/1/07, Chandra Seetharaman <sekharan@us.ibm.com> wrote:
>> Hi,
>>
>> The RDAC driver you are referring to is an independent driver that
>> supports DS4K.
>>
This is the proprietary driver from LSI/Engenio, using it's own multipath
framework.

>> Whereas the RDAC driver being talked in this mailing list works under
>> DM-Multipath.
>>
This is the driver included in multipath-tools / linux.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@suse.de			      +49 911 74053 688
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