What could be reason for non-synchronous operations in the shared directory based on SAN between two servers ?

[SuoNayi <su...@163.com>]

Hi all,

     In order to set up a master-slave cluster, we mounted the same path directory
    
     on two servers to form a shared storage directory.
    
     But before I started brokers I found that operations such as creating or deleting directories or files,

     in the shared directory is not synchronous between two servers.Our system engineer explained
    
     that SAN could only mount on the single server and if mounting on two or more servers
    
     the operations in the shared directory are not synchronous.

     Does anyone can give me a hit or some references to prove whether he is corrent or not
    
     or some avice for me to solve this trouble?

     Thanks a lot!
    
SuoNayi

Re: What could be reason for non-synchronous operations in the shared directory based on SAN between two servers ?

[Matt Pavlovich <ma...@gmail.com>]

That's not right. If its older and really-really-low end, maybe, but 
that's definitely not the standard.

If that is going to be the case, you'll want to consider NFSv4 instead.

On 2/15/12 8:55 AM, SuoNayi wrote:
> Hi all,
>
>       In order to set up a master-slave cluster, we mounted the same path directory
>
>       on two servers to form a shared storage directory.
>
>       But before I started brokers I found that operations such as creating or deleting directories or files,
>
>       in the shared directory is not synchronous between two servers.Our system engineer explained
>
>       that SAN could only mount on the single server and if mounting on two or more servers
>
>       the operations in the shared directory are not synchronous.
>
>       Does anyone can give me a hit or some references to prove whether he is corrent or not
>
>       or some avice for me to solve this trouble?
>
>       Thanks a lot!
>
> SuoNayi
>