Re: How to optimize the cloning of a disk with a big empty ext3 partition?
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Thanks for the suggestion, Grégoire On Fri, 2009-06-19 at 21:39 -0700, Stephen Samuel (gmail) wrote: > A program like partimage will copy only the sectors that are already > in use, but it > requires that the destination partition be at least as big as the > original (otherwise > it would be required to relocate used sectors that are near the end of > the parttition). > > The only real way around your problem would be to resize2fs to resize > the filesystem > (not the partition) to a bit over 1GB At that point you could safely > copy only the first > Gig of the partition (whatever size you changed the filesystem to). > You could then > (if you wanted to) resize the filesystem back to fill the partition. > > If you just need the data from the partition archived, and don't need > it to be live, > then you can just use partimage to dump the used sectors, into a > file... When you > need to reconstitute the filesystem, however, partimage will want to > create a filesystem > the same size as the original. > > On Fri, Jun 19, 2009 at 4:42 PM, Gregoire Gentil <gregoire@xxxxxxxxxx> > wrote: > Hello, > > I need to duplicate a huge number of identical 8GB SD cards on > which I > have 1GB of data at the beginning of the disk on various > partitions and > then a 7GB ext3 partition which is rather empty (just a few MB > of data). > > The duplicator device enables me to select which sectors I can > binary-duplicate. I would love to divide by 8 my duplication > time, by > duplicating only the first GB and then the beginning of the > 7GB ext3 > partition. > > When I do a mkfs.ext3, I see that the super-block is written > to various > locations of the partition which is not good for the > optimization I > would like to do. > > Anyone can advise how I could optimize my duplication? What > are my > options? Would it be the same situation for ext2? Meaning > where is the > journal written on the ext3 partition? Is there a single > version or > multiple versions? > > Thanks in advance for any answer or pointer, > > -- > Stephen Samuel http://www.bcgreen.com Software, like love, > 778-861-7641 grows when you give it away _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
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