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Full Discussion: Disk usage with links pointing to files on same FS
Top Forums Shell Programming and Scripting Disk usage with links pointing to files on same FS Post 302885953 by rbatte1 on Wednesday 29th of January 2014 05:26:41 AM
Old 01-29-2014
When you say "all" directories, do you want to descend the top level directories from your current position and report them too? If so, leave off the -s flag. It may be useful to pipe this into a sort as below:-
Code:
du -kx | sort -n

You can choose if you want to include the -L flag. I think that links to files will just count the link where links to a directory will count the content of the directory. Of course, you are not considering hard links within your filesystem, however in my testing, I have found that if I have:-
Code:
robin @ /tmp/robin>ls -l
total 8
drwxr-xr-x 2 robin robingrp 4096 Jan 29 10:18 1
drwxr-xr-x 2 robin robingrp 4096 Jan 29 10:19 2
lrwxrwxrwx 1 robin robingrp    1 Jan 29 10:19 3 -> 2
robin @ /tmp/robin>ls -li 1 2
1:
total 183340
528470 -rw-r--r-- 2 robin robingrp 187740160 Jan 29 10:18 bigfile

2:
total 183340
528470 -rw-r--r-- 2 robin robingrp 187740160 Jan 29 10:18 bigfile
robin @ /tmp/robin>

..... you can see that directories 1 & 2 contain the same file hard linked (same inode number) and directory 3 is symbolically linked.

I then get this output:-
Code:
robin @ /tmp/robin>du -k
183344  ./2
4       ./1
183352  .
robin @ /tmp/robin>

..... so the file is only reported once. i must admit I don't know why it is reported under directory 2 rather than 1, but it's something to be aware of.
You can also see that 3 doesn't list at all.

This is on RHEL6, but other operating systems may vary. It might be that it reports the space used under 1 as the same as 2, but the total doesn't match up.

I hope that this helps.


Robin
 

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LEARN ABOUT DEBIAN

fs_mark

FS_MARK(1)							   User Commands							FS_MARK(1)

NAME

       fs_mark - Benchmark synchronous/async file creation

SYNOPSIS

       fs_mark [OPTIONS] -d DIRECTORY [-d DIRECTORY ...]

DESCRIPTION

       fs_mark is meant to give some low level bashing to file systems. The write pattern that it concentrates on is heavily synchronous IO across
       multiple directories, drives, etc.

OPTIONS

       -h     Print usage and exit.

       -k     Keep files after each iteration.

       -F     Run until filesystem is full.

       -SSyncmethod
	      Method to be used for synchronizing changes to disk:

	      0: No Sync

	      1: fsyncBeforeClose

	      2: sync/1_fsync

	      3: PostReverseFsync

	      4: syncPostReverseFsync

	      5: PostFsync

	      6: syncPostFsync

       -Dnumber
	      Use number subdirectories.

       -Nnumber
	      Use number files in each subdirectory in round robin mode.

       -ddirectory
	      Use directory. Can be specified multiple times.

       -llogfile
	      Log to logfile.

       -Lnumber
	      Repeat the benchmark number of iterations.

       -nnumber
	      Use number of files per iteration.

       -pnumber
	      Use number of total bytes file names.

       -rnumber
	      Use number of random bytes in file names.

       -sbyte_count
	      Use number of bytes as size of each file.

       -tnumber
	      Use number of threads.

       -wnumber
	      Use number (of bytes per write() syscall.

AUTHORS

       fs_mark was written by Ric Wheeler <ric@redhat.com>.

       This manual page was written by Martin Steigerwald <ms@teamix.de>, for the Debian project (but may be used by others).

fs_mark: Benchmark synchronous/async file creation		    March 2012								FS_MARK(1)
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