Date: Thu, 22 Oct 1998 13:47:31 +0930 From: Greg Lehey <grog@lemis.com> To: Bruce Albrecht <bruce@zuhause.mn.org> Cc: Jaime Bozza <wheelman@nuc.net>, current@FreeBSD.ORG Subject: Re: Subdividing synthetic disks (was: newfs problems, more information:) Message-ID: <19981022134731.R1219@freebie.lemis.com> In-Reply-To: <13870.45342.532896.964071@zuhause.zuhause.mn.org>; from Bruce Albrecht on Wed, Oct 21, 1998 at 11:14:22PM -0500 References: <13868.3117.390224.376379@zuhause.zuhause.mn.org> <003801bdfc74$da58cae0$313d31cc@electron.nuc.net> <13869.12610.899877.506387@zuhause.zuhause.mn.org> <19981021180032.X21008@freebie.lemis.com> <13869.58445.435772.587309@zuhause.zuhause.mn.org> <19981022091922.A1219@freebie.lemis.com> <13870.45342.532896.964071@zuhause.zuhause.mn.org>
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On Wednesday, 21 October 1998 at 23:14:22 -0500, Bruce Albrecht wrote: > Greg Lehey writes: >> On Wednesday, 21 October 1998 at 8:40:29 -0500, Bruce Albrecht wrote: >>> Greg Lehey writes: >>>>> I never had any problem doing so. Here's my ccd's disklabel entry: >>>>> >>>>> (snip) >>>> >>>> Why do you want to do this? Would you still find a reason to do it >>>> with vinum? >>> >>> I have a 3 disk CCD with multiple partitions set up because it appears >>> to improve transfer rates by about 50% (IIRC) over having each >>> partition on a separate drive. I know you advocate using one very >>> large partition, but I prefer to keep my partitions small enough so >>> that I can dump any of them to a 90 meter DAT tape (roughly 2 GB) >>> without having to deal with tape swap. >> >> Hmm. Yes, that's a valid reason. It wouldn't be with vinum, because >> you could then just create individual volumes. > > So each vinum volume is a logical disk, and you still get the performance > boost from striping, but you get the other vinum features as well, such as > raid-5 and the ability to add additional space to a volume on the > fly? Correct. Note that ufs currently won't let you do much with the additional space, but it could be useful for swap. > In my case, I'd just create volumes that are 2 GB or less. Precisely. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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