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Roland Smith wrote:
> You could use rsync instead of tar. That would save time.

I'm not talking about saving time. But saving CPU time and HDD
stress. However, the disk space issue is a bigger one:


>> (b) Undo all the bit flipping I have done, since I made the snapshot.
> 
> This is what the procedure above does if you replace the tar commands
> with rsync.

No, because the snapshot will still be in use, and hence all its
bits will be kept intact and read-only. When I use rsync/tar/cpio or
whatever to "undo" changes to a file system, I will in reality copy
these bits to different places on the disk. And until I release the
snapshot (which I very well could, since it would defunct after the
restore process), I will use twice the amount of disk space.



        Svein Halvor

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