Re: [linux-lvm] Swapping LLVM drive
Stuart D Gathman <[email protected]>
| Newsgroups | dev.linux.lists.linux-lvm |
|---|---|
| Message-ID | <[email protected]> |
On Mon, 28 Aug 2023, Phillip Susi wrote:
> Why would you use dd/partclone instead of just having LVM move
> everything to the new drive on the fly?
> Partition the new drive, use pvcreate to initialize the partition as a
> pv, vgextend to add the pv to the existing vg, pvmove to evacuate the
> logical volumes from the old disk, then vgreduce to remove it from the
> vg.
1. Unnecessary copying.
2. You lose your free backup of the system on the old drive,
which should be carefully labeled and kept handy for a year.
(After that, SSDs start to run the risk of data retention issues.)
> Don't forget you'll need to reinstall grub on the new drive for it to
> boot.
And that is the most important reason. "Just reinstall grub" is a
much larger learning curve than "dd" IMO.
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