09-12-2012
The point is the OP poster doesn't complain about a discrepancy between the actual file size and what du is reporting, which is what the quote is about, but about the discrepancy between df and du.
df is telling 63 GB are used, this is global file system view of free space.
du is telling 38 GB are used, this is a hierarchical, file by file computation.
The du manual page just tell the actual data file size is smaller than 38 GB but gives no clue about the 25 GB difference.
There are many reasons for having such a difference, and actually df always tells more space is used than du but the difference seems here too large so I'm trying to exclude the most usual ones with my still unanswered questions.
@dextergenious: another question: are there other file systems mounted on / and where are they ?
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LEARN ABOUT SUSE
mkfs.bfs
MKFS.BFS(8) Linux System Administrator's Manual MKFS.BFS(8)
NAME
mkfs.bfs - make an SCO bfs filesystem
SYNOPSIS
mkfs.bfs [-N nr-of-inodes] [-V volume-name] [-F fsname] device [size-in-blocks]
DESCRIPTION
mkfs.bfs creates an SCO bfs file-system on a block device (usually a disk partition or a file accessed via the loop device).
The size-in-blocks parameter is the desired size of the file system, in blocks. If nothing is specified, the entire partition will be
used.
OPTIONS
-N Specify the desired number of inodes (at most 512). If nothing is specified some default number in the range 48-512 is picked
depending on the size of the partition.
-V volume-label
Specify the volume label. I have no idea if/where this is used.
-F fsname
Specify the fsname. I have no idea if/where this is used.
-v Be verbose.
EXIT CODES
The exit code returned by mkfs.bfs is 0 when all went well, and 1 when something went wrong.
SEE ALSO
mkfs(8).
AVAILABILITY
The mkfs.bfs command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
Util-linux 2.9x 12 Sept 1999 MKFS.BFS(8)