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How to detect using whether NFS server is down or not

DISCUSSION Kapil Dhakad 3 participants 3 messages May 31, 2005 – Jun 1, 2005

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Kapil Dhakad

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#0 lore raw

Hello,

I am using WebNFS SDK client provided by sun, with NFS server. I implemented this client-server architecture in web application, my web application create some document on the fly and store it on different server.

I am facing problem, suppose NFS server is down. At that time WebNFS client continuously make requrest to server and goes into infinite. How to avoid this problem ?
Is there any way using "JAVA" to detect whether server is down or not ? What will be solution over it ?

Please reply urgently

Thanks
- Kapil Dhakad

#1 lore raw
Quoted 13 lines · Kapil Dhakad

Hello,

I am using WebNFS SDK client provided by sun, with NFS server. I implemented this client-server architecture in web application, my web application create some document on the fly and store it on different server.

I am facing problem, suppose NFS server is down. At that time WebNFS client continuously make requrest to server and goes into infinite. How to avoid this problem ?
Is there any way using "JAVA" to detect whether server is down or not ? What will be solution over it ?

Quoted 4 lines

Please reply urgently

Thanks
- Kapil Dhakad

you can use rpcinfo -u as an rpc ping mechanism to see if the apprpriate services are still active on the remote host, but doing so won't avoid occasional hangs on your file system.
Neil

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 *Neil Horman
 *Software Engineer
 *Red Hat, Inc.
 *[email protected]
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#2 lore raw
Quoted 16 lines · Neil Horman
Quoted 15 lines · Kapil Dhakad

Hello,

I am using WebNFS SDK client provided by sun, with NFS server. I implemented this client-server architecture in web application, my web application create some document on the fly and store it on different server.

I am facing problem, suppose NFS server is down. At that time WebNFS client continuously make requrest to server and goes into infinite. How to avoid this problem ?
Is there any way using "JAVA" to detect whether server is down or not ? What will be solution over it ?

Please reply urgently

Quoted 7 lines
Quoted 2 lines

Thanks
- Kapil Dhakad

you can use rpcinfo -u as an rpc ping mechanism to see if the apprpriate services are still active on the remote host, but doing so won't avoid occasional hangs on your file system.
Neil

On a related note:

http://dcs.nac.uci.edu/~strombrg/rpc-health.html