[linux-lvm] creating DD copies of disks
list at xenhideout.nl
Sat Sep 17 14:53:14 UTC 2016
Xen schreef op 17-09-2016 16:16:
> I just won't be able to use the old system until I change it back.
> Time to test, isn't it.
Indeed both Linux and Windows have no issues with the new disk, I think.
I was making a backup onto a bigger-sized disk, but neither Windows nor
Linux have an issue with it. They just see the old partition table of
the old disk and are fine with that.
Now I only need to know if the Linux system will run with the new disk,
but I'm sure there won't be issues there now. The system is not actually
*on* that disk.
Call it a data disk for an SSD system.
So perhaps you can see why I would want to have the two disks loaded at
the same time:
- if they work, I can copy data even after the DD (perhaps, to make some
rsync copy as you indicate) but now I already have all the required
structures (partition tables...) without any work.
- I wasn't actually yet done with the old disk. This was also just
research. Better make a backup first before you finalize things. I want
to do more work on the "old" system before I finalize things. But having
a backup sitting there that I can use is a plus. Having to not be able
to use both disks at the same time is a huge detriment. It is also not
that hard now to change the system back but I still don't know how I can
manually change the UUIDs that a VG/LV references. It is a huge plus if
I can just exchange one PV with another at will.
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