Date: Sun, 09 Dec 2001 21:29:26 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Greg Lehey <grog@FreeBSD.org> Cc: Daniel O'Connor <doconnor@gsoft.com.au>, sthaug@nethelp.no, freebsd-current@FreeBSD.ORG, j@uriah.heep.sax.de, joerg_wunsch@uriah.heep.sax.de Subject: Re: "Dangerously dedicated" yet again (was: cvs commit: src/sys/kern subr_diskmbr.c) Message-ID: <3C144836.5217C971@mindspring.com> References: <44735.1007899299@verdi.nethelp.no> <XFMail.20011209225258.doconnor@gsoft.com.au> <20011210105025.H83634@monorchid.lemis.com> <3C142200.1746FFA2@mindspring.com> <20011210143936.F63585@monorchid.lemis.com>
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Greg Lehey wrote: > > [ ... IBM DTLA drives ... ] > > No, that wasn't me. I didn't quote the full thing; that's what the brackets and ellipsis was for. > > IBM DTLA drives are known to rotate fast enough near the spindle > > that the sustained write speed exceeds the ability of the controller > > electronics to keep up, and results in crap being written to disk. > > What about the cache? Good point. The cache is known to not actually flush to disk when ordered to do so. See the EXT3FS article on www.ibm.com/developerworks for more details. > > This is not often a problem with windows, the FS of shich fills > > sectors in towards the spindle, so you only hit the problem when you > > near the "disk full" state. > > This sounds very unlikely. I know, doesn't it? Good thing Tom's Hardware is so thorough, or we might never have known this, with everyone on the verge of discovering it simply dismissing it as "very unlikely". 8^). > > Do a Google/Tom's Hardware search to reassure yourself that I am not > > smoking anything. > > I think I'd rather put the shoe on the other foot. This looks like > high-grade crack. Who was smoking it? Tom's Hardware, IBM, CNET, Storave Review, etc.. http://www6.tomshardware.com/storage/00q3/000821/ibmdtla-07.html http://www.storage.ibm.com/hdd/prod/deskstar.htm http://computers.cnet.com/hardware/0-1092-418-1664463.html?pn=3&lb=2&ob=0&tag=st\.co.1092.bottom.1664463-3 http://www.storagereview.com/welcome.pl?/http://www.storagereview.com/jive/sr/thread.jsp?forum=2&thread=12485 I suggest the search: http://google.yahoo.com/bin/query?p=DTLA+drive+problem&hc=0&hs=0 > > It's because you have to reinstall, should you want to add a second > > OS at a later date (e.g. Linux, or Windows). > > So all dedicated installations are dangerous? I would have to do > that whether I had a Microsoft partition table or not if I had already > used the entire disk for FreeBSD. Yes. I don't understand your point. > > Your use is orthogonal to the most common expected usage, which is > > disks shared between OSs on a single platform, rather than disks > > shared between a single OS on multiple platforms. > > Expected usage is to install once and then never change it. No, expected usage is to purchase a machine with an OS preinstalled, and then install FreeBSD/Linux/BeOS/other third party OS as an "also ran", rather than the primary OS. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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