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Re: the worst scenario of ext3 after abnormal powerdown



On Mon, Oct 23, 2006 at 10:27:20PM +0800, Pengcheng Zou wrote:
> thanks a lot for the explanation.  so if i understand it clearly, to
> get a reliable data storage, i need turn off write cache or enable
> barrier. both methods depend on the hardware. so how to know whether a
> disk or drive support write cache? how to turn off write cache (i know
> hdparm -W0 for IDE, but how to turn off write cache of SCSI drive?)?

maybe http://scsirastools.sourceforge.net/ ? also see:
http://www-dt.e-technik.uni-dortmund.de/~ma/linux/kernel/safe-write-caches.html


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