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Conference decwet::advfs_support

Title:	AdvFS Support/Info/Questions Notefile
Notice:	note 187 is Freq Asked Questions;note 7 is support policy
Moderator:	DECWET::DADDAMIO

Created:	Wed Jun 02 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1077
Total number of notes:	4417

1054.0. "defrag and open file" by OTOOA::LACHANCE () Wed Apr 30 1997 09:59

    How does the defragment util handles files that are currently open and
    accessed by users ?
    
    Thanks 
    Francis

T.R Title User Personal
Name Date Lines

1054.1 Migrate NNTPD::"[email protected]" Barry Carlson Tue May 06 1997 11:22 9

T.R	Title	User	Personal Name	Date	Lines
1054.1	Migrate	NNTPD::"[email protected]"	Barry Carlson	`Tue May 06 1997 11:22`	9
	advfs defragment uses a library call to the advfs kernel migrate code. The man page for migrate explains a little. It is the same code as the utility "migrate" uses to migrate a file (defragmenting it in the process). kernel migrate uses extent map locking to ensure extent maps are consistent whenever a user has a copy of a file and subsequently writes it. [Posted by WWW Notes gateway]

advfs defragment uses a library call to the advfs kernel migrate code.  The
man
page for migrate explains a little.  It is the same code as the utility
"migrate"
uses to migrate a file (defragmenting it in the process).

kernel migrate uses extent map locking to ensure extent maps are consistent 
whenever a user has a copy of a file and subsequently writes it. 
[Posted by WWW Notes gateway]