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Re: bonnie++: disastrous RAID 1/5 results



also sprach Juri Haberland <juri@koschikode.com> [2003.08.21.1605 +0200]:
> > Right, but while I had zero dataloss on ext3 filesystems so far,
> > I have been screwed over by reiserfs a couple of times.
> 
> I didn't suggest that you actually *use* reiserfs, but if you're doing
> benchmarks you should do them with the same filesystems, or else your
> numbers are meaningless.

Right.

> > The disk on the fast machine is master to a slave disk.
> > The first disk in the RAID is (unfortunately) master to a slave
> > CD-ROM, which is, however, unused.
> 
> Ok. I just saw, that I could have gathered that information from your
> other mail - sorry about that.

Uh, how? hdb was never mentioned. No problem, I am the one asking
for help here.

> Well, I don't know about ext3, but my RAID5 device, which I created
> without any special commandline parameters, looks like this:
> 
> md7 : active raid5 hdg9[2] hde1[1] hda9[0]
>       160086272 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]

How'd you make it? What does your /etc/raidtab look like?

> I'd say, fix your DMA problems and your RAID5 should fly.

You got it!

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