[ale] Best command to copy a mounted filesystem?

[Robert L. Harris]

You can mount it and do the cpio method which is faster.  It'll copy all
the bits, etc but it won't copy all the bytes of empty space or you can
do a:

dd if=/dev/sda of=/dev/sdc


Thus spake David Corbin (dcorbin at machturtle.com):

> I want an image because I'm putting it on an identical disk....
> 
> Robert L. Harris wrote:
> 
> >You want an image of the filesystem/partition or the contents such with
> >permissions, etc?  If you go with the image you may be sorry, what if
> >you can't get an identicle replacement disk?  You'll loose out.
> >
> >Use tar or cpio.  If you don't want a tarball but want to copy /usr to
> >/mnt/backups/usr then my prefered method is:
> >
> >"find /usr -mount -print | cpio -pdmu /mnt/backups/usr"
> >
> >
> >Robert
> >
> >
> >Thus spake David Corbin (dcorbin at machturtle.com):
> >
> > 
> >
> >>I want to copy (as in "mirror") a mounted file system for the purposes 
> >>of backup.   I can think of a handful of approaches (my first, dd, 
> >>doesn't seem to work). What's the best way to do this.  Note: I'm not 
> >>talking about make a .tar file or anything of the sort.   I want to 
> >>duplicate the filesystem.  True mirroring is not an an acceptable 
> >>solution.
> >>
> >>
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> >>   
> >>
> >
> >:wq!
> >---------------------------------------------------------------------------
> >Robert L. Harris                     | PGP Key ID: E344DA3B
> >                                        @ x-hkp://pgp.mit.edu 
> >DISCLAIMER:
> >     These are MY OPINIONS ALONE.  I speak for no-one else.
> >
> >Diagnosis: witzelsucht  	
> >
> >IPv6 = robert at ipv6.rdlg.net	http://ipv6.rdlg.net
> >IPv4 = robert at mail.rdlg.net	http://www.rdlg.net
> > 
> >
> 
> 
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:wq!
---------------------------------------------------------------------------
Robert L. Harris                     | PGP Key ID: E344DA3B
                                         @ x-hkp://pgp.mit.edu 
DISCLAIMER:
      These are MY OPINIONS ALONE.  I speak for no-one else.

Diagnosis: witzelsucht  	

IPv6 = robert at ipv6.rdlg.net	http://ipv6.rdlg.net
IPv4 = robert at mail.rdlg.net	http://www.rdlg.net

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