| 1 |
On Fri, Nov 09, 2012 at 04:14:47PM +0100, Volker Armin Hemmann wrote: |
| 2 |
> Am Freitag, 9. November 2012, 01:38:41 schrieb mindrunner: |
| 3 |
> > volker, what is your intention to say i am dumb and stupid. actually you |
| 4 |
> > do not know me. |
| 5 |
> |
| 6 |
> everybody does something dumb and/or stupid once in a while. I average that |
| 7 |
> one to 1/day. |
| 8 |
> |
| 9 |
> There are two ways to react if someone points out that something you do is not |
| 10 |
> the best idea since sliced bread. |
| 11 |
> |
| 12 |
> -> oops. Yeah, I see it. |
| 13 |
> or |
| 14 |
> -> sulking. |
| 15 |
> |
| 16 |
> > |
| 17 |
> > copying on block device level has of cource advantages. and really... i |
| 18 |
> > dont care about 0.4% fragemntation and some journal log. |
| 19 |
> > |
| 20 |
> |
| 21 |
> no, it does not. Apart from fragmentation you also copy all deleted files. All |
| 22 |
> damaged blocks AND the UUID. |
| 23 |
> |
| 24 |
> Oh, and it is slow (I know, fiddling with blocksize etc you can speed it up a |
| 25 |
> lot. Still slow). |
| 26 |
> |
| 27 |
> > I never made bad experiences with this copy technique. |
| 28 |
> |
| 29 |
> which doesn't mean it is a good one. |
| 30 |
> |
| 31 |
> > all my hard drives, ssd and virtual containers are working fine without |
| 32 |
> > any performance issues. |
| 33 |
> |
| 34 |
> How do you know? |
| 35 |
> |
| 36 |
> > so what exactly is your problem? |
| 37 |
> |
| 38 |
> you are telling someone to do something really stupid. |
| 39 |
> |
| 40 |
> Create an image with dd to do some file rescuing? forensic stuff? as a template |
| 41 |
> for containers? To burn it on a dvd/cd? Well, those are valid uses for dd. |
| 42 |
> Converting files? Yes, that is what dd was made for. |
| 43 |
> |
| 44 |
> Copying a partition to another disk, different disk? Wow.. that is just wrong. |
| 45 |
> Even if both disks were identical it would not be great idea. Just a 'well, it |
| 46 |
> does work and at least I am not punishing the new disk' way to do it. |
| 47 |
> |
| 48 |
> Mind you, cp -auv is not the best way either. With ACLs&co it is not such a |
| 49 |
> good choice. And I am surprised that Joerg Schilling hasn't posted how |
| 50 |
> incredible star is for this job yet. Btw, star is a really good tool for the |
| 51 |
> job. It just needs a lot of typing. |
| 52 |
> |
| 53 |
> tar, rsync, cp, star... there are many good or good enough ways to copy files |
| 54 |
> from one harddisk to another |
| 55 |
> |
| 56 |
> dd doesn't belong in that category. |
| 57 |
> |
| 58 |
> - |
| 59 |
> #163933 |
| 60 |
|
| 61 |
Spot on! Here you can be nice and explain to the guy your reasoning behind |
| 62 |
telling him using dd{whatever} for this job is stupid. |
| 63 |
-- |
| 64 |
Happy Penguin Computers >') |
| 65 |
126 Fenco Drive ( \ |
| 66 |
Tupelo, MS 38801 ^^ |
| 67 |
support@×××××××××××××××××××××.com |
| 68 |
662-269-2706 662-205-6424 |
| 69 |
http://happypenguincomputers.com/ |
| 70 |
|
| 71 |
Don't top-post: http://en.wikipedia.org/wiki/Top_post#Top-posting |
Archives