[Gluster-users] GlusterFS Infiniband options in the Specification File

Raghavendra G raghavendra.hg at gmail.com
Wed Dec 10 06:13:14 UTC 2008


A small clarification.

On Wed, Dec 10, 2008 at 10:04 AM, Raghavendra G <raghavendra.hg at gmail.com>wrote:

> Hi John,
> please find inlined comments.
>
> On Wed, Dec 10, 2008 at 12:14 AM, John Simmonds <John2.Simmonds at uwe.ac.uk>wrote:
>
>> Hello people,
>>
>>
>> I am trying to use GlusterFS over Infiniband using ib-verbs. Now so far
>> I know about these options:
>>
>> option transport-type ib-verbs/client # For Infiniband Verbs client
>> option transport-type ib-verbs/server # For Infiniband Verbs server
>>
>> and of course these ones:
>> option ib-verbs-work-request-recv-size   1048576
>> option ib-verbs-work-request-recv-count  16
>> option ib-verbs-work-request-send-size   1048576
>> option ib-verbs-work-request-send-count  16
>>
>>
>> Now what I don't understand is how do you specify a Infiniband host?
>>
>> What I mean is when using IP you would do this on the server:
>>
>> option auth.ip.brick1.allow 192.168.* # Allow access to "brick1" volume
>>
>> and this on the client:
>>
>> option remote-host 192.168.1.10
>>
>>
>> That I understand, but Infiniband doesn't work off IP, unless of course
>> you enable IP over Infiniband (IPoIB).
>
>
> each server which is using infiniband transport would be listening on a
> socket (which is identified by ip:port). Client has to connect to that
> address (Ip:port) and once initial handshake (which is related to ib-verbs)
> is done, all further communication happens through ib-verbs.
>
>
>> So my questions really are:
>>
>> 1. Is there a way to specify a Infiniband host other then by IP?
>
>
> No.
>
>
>>
>> 2. If you have to use IP is that IPoIB you use?
>
>
> Not necessarily. TCP/IP would also be fine. Since this communication
> channel is used only for initial handshake. And since handshake data is
> small (when compared to actual data flowing between client and server) this
> has no effect on performance.
>

I meant ethernet would also be fine, since IPoIB is tcp/ip.


>
>
>>
>>
>> Thanks people,
>>
>> John Simmonds
>> Computer Officer - Linux & Real-time Systems
>> University of the West of England
>> United Kingdom
>>
>>
>> This email was independently scanned for viruses by McAfee anti-virus
>> software and none were found
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>>
>
>
> regards,
> --
> Raghavendra G
>
>


-- 
Raghavendra G
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