194 lines
3.3 KiB
HTML
194 lines
3.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Components</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="The openMosix HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="So what is openMosix Anyway ? "
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HREF="what.html"><LINK
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REL="PREVIOUS"
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TITLE="openMosix in action: An example"
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HREF="x204.html"><LINK
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REL="NEXT"
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TITLE="openMosix Test Drive"
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HREF="x223.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The openMosix HOWTO: </TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="x204.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 2. So what is openMosix Anyway ?</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="x223.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN210"
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></A
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>2.4. Components</H1
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN212"
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></A
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>2.4.1. Process migration</H2
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><P
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> With openMosix you can start a process on one machine and find out it
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actually runs on another machine in the cluster. Each process has its
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own Unique Home Node (UHN) where it gets created.</P
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><P
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> Migration means that a process is splitted in 2 parts, a user part and
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a system part. The user part will be moved to a remote node while the
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system part will stay on the UHN. This system-part is sometimes
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called the deputy process: this process takes care of resolving most
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of the system calls.</P
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><P
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>openMosix takes care of the communication between these 2 processes.</P
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN217"
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></A
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>2.4.2. The openMosix File System (oMFS)</H2
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><P
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>oMFS is a feature of openMosix which allows you to access remote
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filesystems in a cluster as if they were locally mounted. The
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filesystems of your other nodes can be mounted on /mfs and you will,
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for instance, find the files in /home on node 3 on each machine in
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/mfs/3/home. </P
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN220"
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></A
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>2.4.3. Direct File System Access (DFSA)</H2
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><P
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>Both Mosix and openMosix provide a cluster-wide file-system (MFS) with
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the DFSA-option (Direct File-System Access). It provides access to all
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local and remote file-systems of the nodes in a Mosix or openMosix
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cluster.</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="x204.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="x223.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>openMosix in action: An example</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="what.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>openMosix Test Drive</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |