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Uhm... why don't you just move the contents over, then change all references to the new file systems? (fstab, boot loader, etc.)
Yeah, I've considered that - Remake the mdraid and partition schema on the correct drives, and then rsync everything over. It's just a lot more manual than what I was hoping for was possible.
It's probably just a technicality, but I would not use rsync, but tar -cp ...|tar -xvpC ...
Depending on how you made the images, you can probably also mount and change them or extract just the files etc.
Edit: disregard this. I have gotten my wires crossed somewhere.
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tarcannot preserve hard links, wherersynccan. Definitely something to bear in mind before doing a full drive copy.~~As for why anyone would choose hard links over symlinks, sometimes, for some purposes, it's not clear which file should be the target and which the link and also, symlinks - especially explicit, non-relative symlinks - are very easily broken when files are moved around. Patching them all can be a pain.
you mixed something up tar can and will preserve hard links by default
I could have sworn that the last time I tried to
tar-copy part of a filesystem containing hard links that I ended up with copies everywhere rather than preservation of the hard links, and thetarmanual page isn't particularly clear about it at all.But it looks like I've misremembered because a quick test with
tarconfirms that it detects and saves hard links, and they unpack correctly too. Now I'm wondering precisely what it was that I was doing where I ended up with all those copies.maybe the target file system didn't support hard links. hard to say.
This! I've done it many a time following 3.7 Full system backup. For some reason can't get table of contents to load on mobile and get a proper anchor link.