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Am Freitag, 9. November 2012, 01:38:41 schrieb mindrunner: |
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> volker, what is your intention to say i am dumb and stupid. actually you |
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> do not know me. |
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everybody does something dumb and/or stupid once in a while. I average that |
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one to 1/day. |
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There are two ways to react if someone points out that something you do is not |
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the best idea since sliced bread. |
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-> oops. Yeah, I see it. |
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or |
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-> sulking. |
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> |
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> copying on block device level has of cource advantages. and really... i |
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> dont care about 0.4% fragemntation and some journal log. |
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> |
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no, it does not. Apart from fragmentation you also copy all deleted files. All |
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damaged blocks AND the UUID. |
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Oh, and it is slow (I know, fiddling with blocksize etc you can speed it up a |
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lot. Still slow). |
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> I never made bad experiences with this copy technique. |
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which doesn't mean it is a good one. |
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> all my hard drives, ssd and virtual containers are working fine without |
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> any performance issues. |
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How do you know? |
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> so what exactly is your problem? |
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you are telling someone to do something really stupid. |
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Create an image with dd to do some file rescuing? forensic stuff? as a template |
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for containers? To burn it on a dvd/cd? Well, those are valid uses for dd. |
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Converting files? Yes, that is what dd was made for. |
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Copying a partition to another disk, different disk? Wow.. that is just wrong. |
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Even if both disks were identical it would not be great idea. Just a 'well, it |
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does work and at least I am not punishing the new disk' way to do it. |
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Mind you, cp -auv is not the best way either. With ACLs&co it is not such a |
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good choice. And I am surprised that Joerg Schilling hasn't posted how |
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incredible star is for this job yet. Btw, star is a really good tool for the |
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job. It just needs a lot of typing. |
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tar, rsync, cp, star... there are many good or good enough ways to copy files |
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from one harddisk to another |
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dd doesn't belong in that category. |
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- |
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#163933 |
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