Date: Fri, 26 Jan 2001 14:02:33 +1030 From: Greg Lehey <grog@lemis.com> To: Mike Smith <msmith@freebsd.org> Cc: Kevin Oberman <oberman@es.net>, FreeBSDHW <freebsd-hardware@FreeBSD.ORG> Subject: Re: Hard Drive cloning Message-ID: <20010126140233.C1222@wantadilla.lemis.com> In-Reply-To: <200101260008.f0Q08G100618@mass.dis.org>; from msmith@freebsd.org on Thu, Jan 25, 2001 at 04:08:16PM -0800 References: <200101252147.f0PLlkc05475@ptavv.es.net> <200101260008.f0Q08G100618@mass.dis.org>
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On Thursday, 25 January 2001 at 16:08:16 -0800, Mike Smith wrote: >> Mike, >> >> I had never run into team before. It looks interesting. >> >> Have you any suggestions for reasonable values for 'team' to use for >> dd? >> >> I assume the syntax would be: >> dd bs=NNNNN if=/dev/adNsN | team NNNNN X | dd bs=NNNNN of=/dev/adNsN > > That's more or less what I'd recommend. > > To take best advantage of FreeBSD's "fast wide pipe" support, the block > size should be > 64k; I've had good results around 1M. More than that is > probably wasteful, and may run you out of physical memory... More than 128 kB doesn't help much. That's MAXPHYS, the maximum I/O transfer size. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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