Hi,

I was wondering what the overhead of a ext3 filesystem is. I formatted a 100GB disk but have only about 86GB available after formatting. I know 100GB is actually less than really 100GB, but 86GB is pretty low.

'df' also gives some weird results:
Code:
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/root                 3008      3008         0 100% /
/dev/discs/disc0/part1 96014540   1480588  89656620   2% /opt
I would expect that 'used + available = 1k-blocks'?

Or should I use a different version of df (there was none included in coreutils, or e2fsprogs, so where could I find another version?) as this one also can't show any info on the inode usage...

And my shared disk (through samba) also reports having 5GB already filled, but I cannot imagine that the filesystem takes up 5GB.

Should I format my HD with different inode counts and block size?

For further information 'dumpe2fs -h' gives the following, but I don't know what everything means:
Code:
dumpe2fs 1.38 (30-Jun-2005)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          d416321a-07f4-4502-8314-a1703c99388a
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal filetype needs_recovery sparse_super
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              12206080
Block count:              24386670
Reserved block count:     1219333
Free blocks:              23633488
Free inodes:              12199620
First block:              0
Block size:               4096
Fragment size:            4096
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Filesystem created:       Sat May 27 00:45:26 2006
Last mount time:          Sat May 27 10:35:43 2006
Last write time:          Sat May 27 10:35:43 2006
Mount count:              7
Maximum mount count:      23
Last checked:             Sat May 27 00:45:26 2006
Check interval:           15552000 (6 months)
Next check after:         Wed Nov 22 23:45:26 2006
Reserved blocks uid:      0 (user admin)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      d3034259-0ef9-4837-91a3-8a182c830272
Journal backup:           inode blocks
Is this related to the 'reserved blocks'?

Since I'm only going to use the disk for media files and not millions of small files, I could manage with less inodes, shouldn't I?

And how can I see the journal size?

thanks,
Mox