[ILUG] harddisk swap

[P at draigBrady.com]

Timothy Murphy wrote:
> On Wednesday 28 April 2004 15:59, Cian Cullinan wrote:
> 
>>1) I've partitioned the SCSI disk in advance and done "mkfs.ext3 -j" on all
>>partions except the swap. Will this work or will I have do something like
>>
>>dd if=/dev/hda of=/dev/sda bs=512 count=1
>>
>>for the MBR before I can go and partition /dev/sda?
> 
> 
> I would be very surprised if you could copy the MBR in this way.
> In any case, it seems to me perfectly sensible to partition the disk
> and create file-systems before doing anything else.
> 
> 
>>2) I'm planning on booting from a Fire CD mounting /dev/hda partitions
>>read-only and using cp to copy them to the /dev/sda partitions. Sound
>>reasonable?
> 
> 
> I would use "cp -a" as you suggest.
> You have to be careful not to copy filesystems mounted on subdirectories,
> eg by umount-ing them before copying the main system.
> 
> But I'm sure the ILUG gurus will give better advice.
> 

Won't cp bail out on a failed read?
tar should give you more control of stuff like this:

( cd /src/ && tar --ignore-failed-read --one-file-system cf - . ) |
( cd /dst/ && tar --preserve xf - )

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Pádraig Brady - http://www.pixelbeat.org
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