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Full Discussion: Question on directory size
Top Forums Shell Programming and Scripting Question on directory size Post 302396665 by zaxxon on Friday 19th of February 2010 03:56:42 AM
Old 02-19-2010
Once allocated directory size displayed by ls will not be reduced even if the contents will be deleted. It will still show the large size it formerly needed as Andre described.

Though a du does not show different output:
Code:
$> ll tmp
total 280
drwxr-xr-x 2 root root  278528 2010-02-19 09:34 .
drwxr-xr-x 3 root root   4096 2010-02-19 09:09 ..
$> ll| grep tmp
drwxr-xr-x 2 root root  278528 2010-02-19 09:34 tmp
$> ls -la tmp
total 280
drwxr-xr-x 2 root root  278528 2010-02-19 09:34 .
drwxr-xr-x 3 root root   4096 2010-02-19 09:09 ..
$> du -sk tmp
276     tmp

This is a Linux box using ext3. It could be that other OS'es and fs'es might behave different. To change that back you'll have to delete and recreate the directory.

JFS2 on AIX resizes the size dynamically after contents are deleted, just as a side note.
 

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cachefslog(1M)						  System Administration Commands					    cachefslog(1M)

NAME
cachefslog - Cache File System logging SYNOPSIS
cachefslog [-f logfile | -h] cachefs_mount_point DESCRIPTION
The cachefslog command displays where CacheFS statistics are being logged. Optionally, it sets where CacheFS statistics are being logged, or it halts logging for a cache specified by cachefs_mount_point. The cachefs_mount_point argument is a mount point of a cache file system. All file systems cached under the same cache as cachefs_mount_point will be logged. OPTIONS
The following options are supported. You must be super-user to use the -f and -h options. -f logfile Specify the log file to be used. -h Halt logging. OPERANDS
cachefs_mount_point A mount point of a cache file system. USAGE
See largefile(5) for the description of the behavior of cachefslog when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: Checking the Logging of a directory. The example below checks if the directory /home/sam is being logged: example% cachefslog /home/sam not logged: /home/sam Example 2: Changing the logfile. The example below changes the logfile of /home/sam to /var/tmp/samlog: example# cachefslog -f /var/tmp/samlog /home/sam /var/tmp/samlog: /home/sam Example 3: Verifying the change of a logfile. The example below verifies the change of the previous example: example% cachefslog /home/sam /var/tmp/samlog: /home/sam Example 4: Halting the logging of a directory. The example below halts logging for the /home/sam directory: example# cachefslog -h /home/sam not logged: /home/sam EXIT STATUS
The following exit values are returned: 0 success non-zero an error has occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
cachefsstat(1M), cachefswssize(1M), cfsadmin(1M), attributes(5), largefile(5) DIAGNOSTICS
Invalid path It is illegal to specify a path within a cache file system. SunOS 5.10 7 Feb 1997 cachefslog(1M)
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