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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