It was my understanding that one of the advantages of Reiserfs was its
storage efficiency, although that wasn't the primary reason I switched to
it. However, I was about to remove an unused 1GB SCSI disk from a box which
had some data I wanted. I copied it (using find|cpio) to a reiser filesystem
and to my astonishment, du -s on the directory I copied it to showed 1.3GB
used. Output from du -s * is below
dir ext2 reiser
bin 3571 3702
boot 1907 1920
dev 39 5416
etc 2751 6350
home 73160 78721
lib 12592 13029
opt 368728 717420
root 3539 5613
sbin 2870 3023
tmp 635 629
usr 475915 531540
var 23835 22647
www 8128 9414
It seems that the minimum space used by a file on a reiser fs is much more
than that on an ext2 fs (1k blocks) - opt is particularly bad, because there
I have a local copy of the cddb database, which has > 125000 files, most of
which are small (< 2k).
Any of you other reiser users seen anything like this or have any ideas
about this ?
Regards,
Niall
P.S. It's 2.2.16 with the reiserfs-3.5.23 patch.
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