[Lustre-discuss] Lustre on mpath devices
Klaus Steden
klaus.steden at thomson.net
Wed Oct 24 17:49:36 PDT 2007
Sorry, I should have made that first sentence more clear:
Does an FS label (i.e. LUSTRE-OST0001) provide the same functionality as the
consistent device name that the multipath device-mapper provides?
thanks,
Klaus
On 10/24/07 5:43 PM, "Klaus Steden" <klaus.steden at thomson.net>did etch on
stone tablets:
>
> What about the FS label, i.e. LUSTRE-OST0001 (which is what's actually in my
> /etc/fstab, even though Lustre mounts a specific device)?
>
> Does a multipathed setup automatically address failover, or is STONITH
> configuration still required to automatically remap devices normally served
> by downed servers?
>
> thanks,
> Klaus
>
> On 10/24/07 4:09 PM, "Cliff White" <Cliff.White at Sun.COM>did etch on stone
> tablets:
>
>> Klaus Steden wrote:
>>> Does device multi-pathing have to be configured before the file system has
>>> been created?
>>>
>> Lustre needs a consistent device name, so I would say yes.
>>
>>> Is there any documentation I should be referring to on the Lustre side to
>>> get this set up?
>>
>> No, as long as you give Lustre something that looks like a block device
>> it's fine. There is no special setup for multipath devices. Which is why
>> the consistent device name is important.
>>
>> cliffw
>>
>>>
>>> thanks,
>>> Klaus
>>>
>>>> On Oct 23, 2007, at 3:54 AM, Marco wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> I am new to this list and Lustre, please excuse me if I am asking an
>>>>> already-answered question (I searched the archives without success).
>>>>>
>>>>> I'd like to use Lustre on a cluster where MGS/MDT and OSTs hosts can
>>>>> access some logical volumes (one for each host) exported from a SAN
>>>>> through fiber channel links, and available under /dev/mapper/mpathN.
>>>>>
>>>>> Is this configuration possible? Are there any known issues with it?
>>>>>
>>>>>
>>>>> Thanks in advance
>>>>> Regards
>>>>>
>>>>> --
>>>>> http://digilander.libero.it/mabozzo/
>>>>>
>>>>> _______________________________________________
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>
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