<s>
The	O
Be	B-Language
File	I-Language
System	I-Language
(	O
BFS	O
)	O
is	O
the	O
native	O
file	B-Application
system	I-Application
for	O
the	O
BeOS	B-Application
.	O
</s>
<s>
In	O
the	O
Linux	B-Application
kernel	O
,	O
it	O
is	O
referred	O
to	O
as	O
"	O
BeFS	B-Language
"	O
to	O
avoid	O
confusion	O
with	O
Boot	B-Application
File	I-Application
System	I-Application
.	O
</s>
<s>
BFS	O
was	O
developed	O
by	O
Dominic	O
Giampaolo	O
and	O
Cyril	O
Meurillon	O
over	O
a	O
ten-month	O
period	O
,	O
starting	O
in	O
September	O
1996	O
,	O
to	O
provide	O
BeOS	B-Application
with	O
a	O
modern	O
64-bit-capable	O
journaling	B-Application
file	I-Application
system	I-Application
.	O
</s>
<s>
It	O
is	O
case-sensitive	O
and	O
capable	O
of	O
being	O
used	O
on	O
floppy	B-Device
disks	I-Device
,	O
hard	B-Device
disks	I-Device
and	O
read-only	O
media	O
such	O
as	O
CD-ROMs	B-Device
.	O
</s>
<s>
However	O
,	O
its	O
use	O
on	O
small	O
removable	O
media	O
is	O
not	O
advised	O
,	O
as	O
the	O
file-system	B-Application
headers	O
consume	O
from	O
600	O
KB	O
to	O
2	O
MB	O
,	O
rendering	O
floppy	B-Device
disks	I-Device
virtually	O
useless	O
.	O
</s>
<s>
Like	O
its	O
predecessor	O
,	O
OFS	O
(	O
Old	O
Be	B-Language
File	I-Language
System	I-Language
,	O
written	O
by	O
Benoit	O
Schillings	O
-	O
formerly	O
BFS	O
)	O
,	O
it	O
includes	O
support	O
for	O
extended	O
file	O
attributes	O
(	O
metadata	O
)	O
,	O
with	O
indexing	O
and	O
querying	O
characteristics	O
to	O
provide	O
functionality	O
similar	O
to	O
that	O
of	O
a	O
relational	B-Application
database	I-Application
.	O
</s>
<s>
Whilst	O
intended	O
as	O
a	O
64-bit-capable	O
file	B-Application
system	I-Application
,	O
the	O
size	O
of	O
some	O
on-disk	O
structures	O
mean	O
that	O
the	O
practical	O
size	O
limit	O
is	O
approximately	O
2	O
exabytes	O
.	O
</s>
<s>
Similarly	O
the	O
extent-based	O
file	O
allocation	O
reduces	O
the	O
maximum	O
practical	O
file	O
size	O
to	O
approximately	O
260	O
gigabytes	O
at	O
best	O
and	O
as	O
little	O
as	O
a	O
few	O
blocks	O
in	O
a	O
pathological	O
worst	O
case	O
,	O
depending	O
on	O
the	O
degree	O
of	O
fragmentation	B-Application
.	O
</s>
<s>
Its	O
design	O
process	O
,	O
application	B-Application
programming	I-Application
interface	I-Application
,	O
and	O
internal	O
workings	O
are	O
,	O
for	O
the	O
most	O
part	O
,	O
documented	O
in	O
the	O
book	O
Practical	O
File	B-Application
System	I-Application
Design	O
with	O
the	O
Be	B-Language
File	I-Language
System	I-Language
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
original	O
1996	O
BFS	O
used	O
in	O
BeOS	B-Application
,	O
there	O
are	O
several	O
implementations	O
for	O
Linux	B-Application
.	O
</s>
<s>
In	O
early	O
1999	O
,	O
Makoto	O
Kato	O
developed	O
a	O
Be	B-Language
File	I-Language
System	I-Language
driver	O
for	O
Linux	B-Application
;	O
however	O
,	O
the	O
driver	O
never	O
reached	O
a	O
completely	O
stable	O
state	O
,	O
so	O
in	O
2001	O
Will	O
Dyson	O
developed	O
his	O
own	O
version	O
of	O
the	O
Linux	B-Application
BFS	O
driver	O
.	O
</s>
<s>
In	O
2002	O
,	O
Axel	O
Dörfler	O
and	O
a	O
few	O
other	O
developers	O
created	O
and	O
released	O
a	O
reimplemented	O
BFS	O
called	O
OpenBFS	B-Language
for	O
Haiku	B-Language
(	O
OpenBeOS	B-Language
back	O
then	O
)	O
.	O
</s>
<s>
In	O
January	O
2004	O
,	O
Robert	O
Szeleney	O
announced	O
that	O
he	O
had	O
developed	O
a	O
fork	O
of	O
this	O
OpenBFS	B-Language
file	B-Application
system	I-Application
for	O
use	O
in	O
his	O
SkyOS	B-Application
operating	O
system	O
.	O
</s>
<s>
The	O
regular	O
OpenBFS	B-Language
implementation	O
was	O
also	O
ported	O
to	O
Syllable	B-Application
,	O
with	O
which	O
it	O
has	O
been	O
included	O
since	O
version	O
0.6.5	O
.	O
</s>
