<s>
InterMezzo	B-Application
was	O
a	O
distributed	B-Protocol
file	I-Protocol
system	I-Protocol
written	O
for	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
,	O
distributed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
It	O
was	O
included	O
in	O
the	O
standard	O
Linux	B-Operating_System
kernel	I-Operating_System
from	O
version	O
2.4.15	O
but	O
was	O
dropped	O
from	O
version	O
2.6	O
.	O
</s>
<s>
InterMezzo	B-Application
is	O
designed	O
to	O
work	O
on	O
top	O
of	O
an	O
existing	O
journaling	B-Application
file	I-Application
system	I-Application
such	O
as	O
ext3	B-Application
,	O
JFS	B-Application
,	O
ReiserFS	B-Application
or	O
XFS	B-Application
.	O
</s>
<s>
An	O
InterMezzo	B-Application
system	O
consists	O
of	O
a	O
server	B-Application
,	O
which	O
holds	O
the	O
master	O
copy	O
of	O
the	O
file	O
system	O
,	O
and	O
one	O
or	O
more	O
clients	B-Protocol
with	O
a	O
cache	B-General_Concept
of	O
the	O
file	O
system	O
.	O
</s>
<s>
It	O
does	O
this	O
by	O
capturing	O
all	O
writes	O
to	O
the	O
server	B-Application
's	O
file	O
system	O
journal	B-General_Concept
and	O
streaming	O
them	O
to	O
the	O
client	O
systems	O
to	O
be	O
replayed	O
.	O
</s>
<s>
InterMezzo	B-Application
is	O
described	O
as	O
a	O
"	O
high	O
availability	O
file	O
system	O
"	O
since	O
a	O
client	O
can	O
continue	O
to	O
operate	O
even	O
if	O
the	O
connection	O
to	O
the	O
server	B-Application
is	O
lost	O
.	O
</s>
<s>
Computers	O
that	O
are	O
not	O
always	O
connected	O
to	O
the	O
network	O
,	O
such	O
as	O
laptops	B-Device
.	O
</s>
<s>
Typical	O
applications	O
of	O
on-demand	O
mode	O
were	O
distributed	O
file	O
serving	O
,	O
such	O
as	O
File	B-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
FTP	O
)	O
or	O
WWW	O
,	O
or	O
desktop	O
workstations	O
.	O
</s>
<s>
InterMezzo	B-Application
was	O
started	O
as	O
part	O
of	O
the	O
Coda	B-Application
file	O
system	O
project	O
at	O
Carnegie	O
Mellon	O
University	O
and	O
took	O
many	O
design	O
decisions	O
from	O
Coda	B-Application
(	O
but	O
did	O
not	O
share	O
code	O
)	O
.	O
</s>
<s>
Coda	B-Application
in	O
turn	O
was	O
a	O
branch	O
from	O
the	O
OpenAFS	B-Application
project	O
.	O
</s>
<s>
Although	O
it	O
was	O
supported	O
in	O
the	O
standard	O
Linux	B-Operating_System
kernel	I-Operating_System
in	O
version	O
2.4	O
,	O
InterMezzo	B-Application
was	O
removed	O
in	O
the	O
2.6	O
series	O
.	O
</s>
<s>
Its	O
developers	O
moved	O
on	O
to	O
a	O
new	O
project	O
named	O
Lustre	B-Application
at	O
a	O
company	O
called	O
Cluster	B-Application
File	I-Application
Systems	I-Application
,	O
around	O
2001	O
.	O
</s>
