Date: Fri, 14 Nov 1997 08:10:34 -0800 (PST) From: Beau James <bjames@cisco.com> To: aic7xxx@FreeBSD.ORG, coyote@step.polymtl.ca Subject: Re: AHAX94X/copying 2 drives. Message-ID: <199711141610.IAA22475@pleco.cisco.com>
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--> Technically speaking, what should be the best way to -copy- data --> from the old drive to the new one? Is it generally a good idea to "dd --> if=/dev/sdc of=/dev/sdd bs=512" (regardless of the actual number of --> good/bad sectors?) An "image copy" like this is OK if the two disks are of identical geometry. --> or should I just recreate the partitions, mount them in --> the correct trees and then "cp -dpRv /mnt1 to /mnt2"? Or "dump 0f - /mnt | (cd /mnt2; restore xf -)". Dump has the smarts to handle special files in the filesystem (e.g. the contents of "/dev"). --> I actually feel like trying the second method, it has worked fine --> for me for several GB of data already and at least gives the ability of --> "verifying" the surface when mke2fs'ing with "-c". The second approach (using dump, cpio, cp, tar) also has the advantage of relaying out your files - sort of a Unix defragmenter. Beau +-------------------------+---------------------+---------------------------+ + || || + Cisco Systems, Inc. + Beau James + + || || + 170 West Tasman Dr. + Mgr, xDSL Switch S/W + + |||| |||| + San Jose, CA 95134+ Phone: (408) 526-8328 + + ..:||||||:..:||||||:.. + + FAX: (408) 527-0495 + + Cisco Systems Inc. + + Email: bjames@cisco.com + +-------------------------+---------------------+---------------------------+
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