Re: RAID controller safety

From: Bernd Eckenfels
Date: Fri Dec 30 2005 - 14:30:43 EST


In article <20051230185840.52264.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx> you wrote:
> So all writes would be treated as syncronous in the write-through case (no battery), making fsync
> a no-op?

The device cache is IMHO not related to the higher level buffer cache. So
fsync flushes the buffers and the write-through ensures the controller may
not delay it in controller ram.

Gruss
Bernd
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/