Re: Raw devices (Was:Re: NTFS, FAT32, etc.)

David S. Miller (
Thu, 8 May 1997 16:12:47 -0400

Date: Thu, 8 May 1997 21:22:54 +0200
From: Martin von Loewis <>

Oh let's end this discussion, it keep coming up and I'm going to fix
it for crying out loud.

Now it's getting weird. So you are saying that the kernel might have
an extra internal buffer, which is not counted as buffer cache for
raw devices (this sounds like a terminology issue: any internal buffer
of the kernel for writing could be considered a 'cache').
Anyway, so raw devices do *not* guarantee IO finalization, which means
that in case of a crash, data written to a raw device might get lost?
This does not sound like a very usefull device...

We do not have RAW I/O in Linux as of now, it is being worked on and
will go in for 2.2.0 now let's stop this thread as it does nothing.

Yow! 11.26 MB/s remote host TCP bandwidth & ////
199 usec remote TCP latency over 100Mb/s ////
ethernet. Beat that! ////
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David S. Miller, /_____________/ / // /_/ ><