[Linux-PowerEdge] MD3000 preferred path not working

G.Bakalarski at icm.edu.pl G.Bakalarski at icm.edu.pl
Thu Jul 18 05:46:33 CDT 2013


Hi

BTW. what is your server setup? Windows/Linux/Xenserver/VMWare???

This may also mean that your server uses wrong path ...

Have you read this thread:

http://permalink.gmane.org/gmane.linux.hardware.dell.poweredge/40180

?

Maybe sas cabling is not as expected ? Or SAS HBAs not working ?

G
>
> No, not 1000000% sure the array hardware is OK, but MDSM (and Dell) say it
> is.
>
> 2 x SAS 5/E dual port cards.
>
> Md3000 + 3 MD1000's attached.
>
> Both SAS cards have firmware 00.10.51.00.06.12.05.00
>
> The whole lot has been bounced many times over the past week.
>
> I can't imagine how a disk replacement can lead to all this either, it's a
> complete mess.
>
> Nick .
>
>
> [image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
> Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
> 707 | M:: +44(0)7554 003 634 E:: Nick.Lunt at Patech-Solutions.com W::
> http://www.patech-solutions.com]
>
>
> On 18 July 2013 10:59, <G.Bakalarski at icm.edu.pl> wrote:
>
>> Hi
>>
>> Are you 10000000% sure all diskarray hardware is OK ???
>>
>> And what SAS cards - server HBA or diskarray controllers ???
>>
>> Is it single box diskarray or you have expansion enclosures???
>>
>> Single/dual controller ???? (if there are expansions: single/dual pathed
>> expansions????)
>>
>> If dual controller (in case you replaced any) : are controllers' firmwares
>> identical?
>>
>> Did you power off/on all componets ?
>>
>> I can't imagine how regular disk exchange can make such disaster nowadays
>> :(
>>
>> G.
>>
>> >
>> > we had a disk fail in an MD3000 last week which was replaced under
>> > warranty. However, during the replacement of the disk something happened
>> > and we ended up getting 2 new SAS cards, MD3000 controllers and a new
>> > backplane for the MD3000. This took a week to fix costing us thousands.
>> >
>> > Now were just about back online, but we are getting these errors from the
>> > MD3000:
>> >
>> > Summary
>> > Node ID: WFSC_NON_PROD_SAS
>> > Host IP Address: 10.69.0.21
>> > Host ID: fintestdb.wales.nhs.uk
>> > Event Error Code: 4011
>> > Event occurred: Jul 18, 2013 9:51:43 AM
>> > Event Message: Virtual Disk not on preferred path due to AVT/RDAC
>> failover
>> > Component type: RAID Controller Module
>> > Component location: RAID Controller Module in slot 0
>> > Priority:Critical
>> >
>> > The only way we seem to be able to stop getting these error messages is
>> to
>> > set the preferred path to path 0 for all luns.
>> >
>> > Now, we have the exact same setup on another server, but using the
>> correct
>> > preferred paths and we are having none of these issues. Both these
>> servers
>> > have the same OS and MD3000 setup.
>> >
>> > Could anyone please shed some light on why the server that's just been
>> > 'fixed' is generating these errors unless we assign all luns to path 0?
>> >
>> > Thanks
>> > Nick .
>> > _______________________________________________
>> > Linux-PowerEdge mailing list
>> > Linux-PowerEdge at dell.com
>> > https://lists.us.dell.com/mailman/listinfo/linux-poweredge
>> >
>>
>>
>>
>




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