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Revision 1.1.1.1 (vendor branch), Wed Mar 29 22:34:38 2000 UTC (17 years, 7 months ago) by n8994
Branch: SGI_FW, MAIN
CVS Tags: START, HEAD
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Initial checkin

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 <TITLE>How Does IRIX DMF Work?</TITLE> 
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<P>Slide 5 of 14</P>
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<!-- <UL>
<H2>How Does IRIX DMF Work?</H2>
</UL></P>
<P><UL>
<LI><H2>Migration steps:
</H2>
<UL>
1) user process issues read
<BR><BR>2) XFS notices file is offline
<BR>3) Process sleeps
<BR>4) DMF sends recall request via DMAPI 
<BR>5) DMF determines residence
<BR>6) DMF sends request to MSP
<BR>7) MSP restores data
<BR>8) MSP responds to DMF daemon
<BR>9) DMF responds to kernel
<BR>10) Kernel wakes process
</UL></UL><UL>
<LI><H2>Considerations:
</H2>
<UL>
<LI>unscheduled interrupts
<LI>multiple requests
<LI>atomic database references</UL></UL></P>
<P>  -->
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