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тАО02-05-2010 08:35 AM
тАО02-05-2010 08:35 AM
Using DD to copy lvols
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тАО02-05-2010 08:46 AM
тАО02-05-2010 08:46 AM
Re: Using DD to copy lvols
Mirror it and then reduce or split it.
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тАО02-05-2010 08:48 AM
тАО02-05-2010 08:48 AM
Re: Using DD to copy lvols
>>>Mirror it and then reduce or split it.
You can't mirror across VGs.
What kind of data are you migrating? Database? Regular files? Application?
How much data?
How often is it used?
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тАО02-05-2010 09:13 AM
тАО02-05-2010 09:13 AM
Re: Using DD to copy lvols
Here is one person who did it. Note the bs=1024.
Sounds like it takes a lot longer than with a cp -p -r between file systems.
http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1265389337405+28353475&threadId=454369
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тАО02-05-2010 10:24 AM
тАО02-05-2010 10:24 AM
Re: Using DD to copy lvols
tar cf - * | ( cd /target; tar xfp -)
is faster than copy for sure.
but I would perfer the safety of rsync
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тАО02-05-2010 11:19 AM
тАО02-05-2010 11:19 AM
Re: Using DD to copy lvols
we migrated the DMX2000 ==> hitachi USP-V ( XP24000) with the dd command and extending of LVOL-s without any problem.
mikap