On 4/22/2010 6:51 PM, John R Pierce wrote:
> jchase wrote:
>
>> We currently have a MD3000i with an iSCSI LUN shared out to our apache
>> web server. We are going to add another apache web server into the mix
>> using LVS to load balance, however, I am curious how well iSCSI
>> handles file locking and data integrity. ...
>>
> it doesn't, not even close. iscsi is purely a block device protocol,
> it doesn't know what files are.
>
That was kind of a stupid assumption on my part and major
misinterpretation of iSCSI information
>
>> Is my setup totally flawed and will ext3 not allow for data integrity
>> with multiple apache hosts reading/writing to the shared storage? Am I
>> required to also setup GFS across my apache hosts or does iSCSI
>> somehow manage this?
>>
> NFS would be more suitable for this application.
>
Is there any reason why you suggest NFS? We would then need to run a NFS
server and deal with the complexity of having a failover solution for
that, whereas it seemed like GFS is a little more decentralized (at
least in terms of not relying on a specific file server) after you
configure the cluster environment.
That was my impression from reading through the docs anyways. I've never
set it up.
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