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What type of Disk I/O takes place on a FileServer?

 
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Old 12-29-2010
What type of Disk I/O takes place on a FileServer?
When you open a file on a fileserver from your client, what type of operation takes place on the server? I imagine the server's hard drive reads the file that the client has requested, and then makes it available somehow through the network share, is that accurate? Also what service on Unix/Linux is responsible for file sharing, and making shared files viewable to clients (Like windows browser service).

Basically, the file server needs to read the requested file and send it as packets to the client? Can someone give me more detail on this process without becoming too overly scientific?
 
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LEARN ABOUT HPUX

statd

statd(1M)																 statd(1M)

NAME

       statd, rpc.statd - network status monitor

SYNOPSIS

DESCRIPTION

       is an RPC server.  It interacts with to provide the crash and recovery functions for the locking services on NFS (see lockd(1M)).

       keeps  track  of the clients with processes which hold locks on a server.  When the server reboots after a crash, sends a message to the on
       each client indicating that the server has rebooted.  The client processes then informs the on the client that  the  server  has  rebooted.
       The client then attempts to reclaim the lock(s) from the server.

       on  the	client host also informs the on the server(s) holding locks for the client when the client has rebooted.  In this case, the on the
       server informs its that all locks held by the rebooting client should be released, allowing other processes to lock those files.

   Options
       recognizes the following options and command-line arguments:

       This is an obsolete option. All messages and errors are logged to

WARNINGS

       The crash of a server is only detected upon its recovery.

FILES

       lists hosts and network addresses to be contacted after a reboot

       lists hosts and network addresses that could not be contacted after last reboot

       includes a number which changes during a reboot

AUTHOR

       was developed by Sun Microsystems, Inc.

SEE ALSO

       lockd(1M), fcntl(2), lockf(2), signal(2), sm(4).

																	 statd(1M)