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Operating Systems Solaris Before I delete any file in Unix, How can I check no open file handle is pointing to that file? Post 302459831 by kchinnam on Tuesday 5th of October 2010 12:45:49 PM
Old 10-05-2010
Quote:
Nothing bad happens if you delete a file in use.
My observation is different. If we delete "catalina.out" from a tomcat web server logs folder. Tomcat would not create another log,, until we restart tomcat. Where as other applications do create a new log file.

I am trying to find a safe way to do a generic log file rotation including logs like "catalina.out". Also try to know if a file is being actively used or not to make a better decision before log/file rotation.

When I query using lsof I get this -->
Quote:
> lsof ../jakarta/logs/catalina.out
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
java 1162 <UID> 1w VREG 314,7 1284251 19505649 ../jakarta/logs/catalina.out
java 1162 <UID> 2w VREG 314,7 1284251 19505649 ../jakarta/logs/catalina.out
What is the meaning of FD --> 1w 2w ?


2. What is the difference between 1w, 2w(in lsof output) Vs <PID>o (o in fuser output) ?

Quote:
> fuser -fu ../jakarta/logs/catalina.out
../jakarta/logs/catalina.out: 13601o(<userid>)

Last edited by kchinnam; 10-05-2010 at 02:32 PM.. Reason: masking secure info
 

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GETBUILDLOG(1)                                                General Commands Manual                                               GETBUILDLOG(1)

NAME
getbuildlog - download build logs from Debian auto-builders SYNOPSIS
getbuildlog package [version-pattern] [architecture-pattern] DESCRIPTION
getbuildlog downloads build logs of package from Debian auto-builders. It downloads build logs of all versions and for all architectures if version-pattern and architecture-pattern are not specified or empty, otherwise only build logs whose versions match version-pattern and build logs whose architectures match architecture-pattern will be downloaded. The version and architecture patterns are interpreted as extended regular expressions as described in grep(1). If version-pattern is "last" then only the logs for the most recent version of package found on buildd.debian.org will be downloaded. If version-pattern is "last-all" then the logs for the most recent version found on each build log index will be downloaded. OPTIONS
-h, --help Show usage information and examples. -V, --version Show version and copyright information. EXAMPLES
getbuildlog hello 2.2-1 amd64 Download amd64 build log for hello version 2.2-1. getbuildlog glibc "" mips.* Download mips(el) build logs of all glibc versions. getbuildlog wesnoth .*bpo.* Download all build logs of backported wesnoth versions. AUTHOR
Written by Frank S. Thomas <fst@debian.org>. DEBIAN Debian Utilities GETBUILDLOG(1)
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