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 <TITLE>Why transactions/logging</TITLE> 
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 <H1>Why transactions/logging</H1> 
 <P><UL>
<LI><H2>File System operations alter multiple objects
</H2>
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<LI>free list, new files, directories, free space, …
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<LI><H2>Traditional method of meta-data updates
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<LI> ordered, synchronous updates
<LI> repair after a crash requires entire meta-data scan
<LI> very time consuming on large file systems.
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<LI><H2>Transactions and logging employ Data Base technology
</H2>
</UL></P>
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