[BACK]Return to sld012.htm CVS log [TXT][DIR] Up to [Development] / xfs-website.orig / papers / DMF-over
File: [Development] / xfs-website.orig / papers / DMF-over / sld012.htm (download)

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
Changes since 1.1: +0 -0 lines 

Initial checkin

<!--  Presentation generated by Internet Assistant for Microsoft PowerPoint 97 -->

<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html;charset=windows-1252">
<meta name="GENERATOR" content="Microsoft Internet Assistant for Microsoft PowerPoint 97">
 <TITLE>DMF Reliability Features</TITLE> 
</HEAD>

<BODY     >

<CENTER>
<TABLE WIDTH=100%> 
     <TR> <TD WIDTH=100% ALIGN=CENTER>
         <A HREF="sld001.htm"><IMG SRC="first.gif" BORDER=0 ALT="First"></A>
         <A HREF="sld011.htm"><IMG SRC="prev.gif" BORDER=0 ALT="Previous"></A>
         <A HREF="sld013.htm"><IMG SRC="next.gif" BORDER=0 ALT="Next"></A>
         <A HREF="sld014.htm"><IMG SRC="last.gif" BORDER=0 ALT="Last"></A>
         <IMG SRC="space.gif" BORDER=0>
         <A HREF="index.htm"><IMG SRC="info.gif" BORDER=0 ALT="Index"></A>
         <A HREF="tsld012.htm"><IMG SRC="text.gif" BORDER=0 ALT="Text"></A>
     </TD> </TR>
     <TR> <TD WIDTH=100% ALIGN=CENTER>
         <IMG SRC="img012.gif" usemap="#Objmap" WIDTH=640 HEIGHT=512 BORDER=0>
     </TD> </TR>
</TABLE>
<P>Slide 12 of 14</P>
</CENTER>
<!-- <UL>
<H2>DMF Reliability Features</H2>
</UL></P>
<P><UL>
<LI><H2>File system backup always required
</H2>
<UL>
<LI>DMF interoperates with xfsdump/xfsrestore
<LI>Can minimize dump time - just transfers inodes/directories
</UL></UL><UL>
<LI><H2>Issue:  metadata in three places
</H2>
<UL>
<LI>Inodes, DMF database, MSP database
</UL></UL><UL>
<LI><H2>All database transactions are journaled
</H2>
<UL>
<LI>Replay journals after unscheduled interrupt
<LI>New database uses two-phase commit
</UL></UL><UL>
<LI><H2>Comprehensive auditing utility for DMF databases
</H2>
<UL>
<LI>dmaudit, dmatvfy, dmdbcheck (new at DMF 2.5)
</UL></UL><UL>
<LI><H2>Ability to create multiple copies of migrated data
</H2>
<UL>
<LI>Disaster recovery and backup
</UL></UL><UL>
<LI><H2>Media integrity checking and recovery</H2>
</UL></P>
<P>  -->
</Body>
</HTML>