Hi,
You interconnect OSS1 and OSS2, OSS2 and OSS3, OSS3 and OSS4, and OSS4 and
OSS1 together via an out-of-band communication fabric, install Linux-HA
heartbeat software to monitor mount points, and configure nodes to take over
each other?s mounts in case of failure.
The implementation I have here uses only single point-to-point links between
OSS pairs (there is no crossover between failover partners) but the princple
is the same; your implementation should work pretty much the same way, with
a few minor differences. I?m assuming you?ve got unused NICs on your OSSes,
so if you connect those to a standard GigE edge switch protected by UPS, you
can create an HA fabric which will give you the coverage you need.
Lustre itself doesn?t support failover natively, you need to implement any
failover using a third-party package; most of us out there use Linux-HA to
great effect.
cheers,
Klaus
On 8/27/08 2:30 AM, "sd a" <ewsdas at gmail.com>did etch on
stone tablets:
> Hi the list,
>
> I have 4 OSS servers , each OSS has 1 gigabit network interface and 2 OSTs,
> first OST use /dev/sdb1, second OST use /dev/sdb2.
>
> OSS1: OST1 & OST2
>
> OSS2: OST3 & OST4
>
> OSS3: OST5 & OST6
>
> OSS4: OST7 & OST8
>
>
> Each file is striped across 4 OSTs : OST1,2,3,4
>
> And I want to setup failover as:
>
> OST2 failover with OST3
>
> OST4 failover with OST5
>
> OST6 failover with OST7
>
> OST8 failover with OST1
>
>
> How do I do?
>
> Thanks.
>
>
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
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