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vgexport

 
John_1017
Advisor

‎03-28-2005 07:25 AM

‎03-28-2005 07:25 AM

vgexport

Hello, How is vgexport/vgimport different from a full filesystem backup using a backup tool? I've read some threads about coldinstall where they mention a filesystem backup as well as vgexport/vgimport non-vg00 filesystems ... Is it really necessary? Thanks in advance.
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A. Clay Stephenson
Acclaimed Contributor

‎03-28-2005 07:31 AM

‎03-28-2005 07:31 AM

Re: vgexport

The fundamental difference is that in the vgexport/vgimport, you aren't really copying data but rather simply the metadata -- ie data that describes the disks. The vgexport/vgimport can be done in only seconds whereas a tar/cpio/frestore might take hours depending upon the volume of data.


If it ain't broke, I can fix that.
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Geoff Wild
Honored Contributor

‎03-28-2005 07:42 AM

‎03-28-2005 07:42 AM

Re: vgexport

Yes - vgexport doesn't really back up the data - only pointers to it...ie: logical volume info....for example - if you did a vgexport to a map file - then rm -rf all your files - when you did the vgimport - you would have no data - only empty filesystems...


Rgds...Geoff
Proverbs 3:5,6 Trust in the Lord with all your heart and lean not on your own understanding; in all your ways acknowledge him, and he will make all your paths straight.
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