[CentOS] file system replication
John R Pierce
pierce at hogranch.com
Fri Oct 10 04:43:25 UTC 2014
On 10/9/2014 8:19 PM, Micky wrote:
> Most people forget that DRDB is a 'clustered' storage that creates a new
> block device on top of existing block devices, over the network.
>
> There are issues like SPLIT BRAIN and a possible data inconsistency, should
> there be multiple network timeouts, congestions (since it is all network
> based) etc. This may not be the best solution for your problem!
those are potential issues with ANY high availability clustering
solution that need to be carefully engineered around. HA clusters
commonly use fencing technology to prevent split brain, dedicated
network adapters just for replication, and redundant connections for
status monitoring, etc.
--
john r pierce 37N 122W
somewhere on the middle of the left coast
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