Re: [PLUG] Is it possible to move data from a SAS drive to the newly installed SSD?

[H Mottaleb via plug <plug@lists.phillylinux.org>]

I have the new 2TB NVMe drive that I can insert in a usb enclosure and I had installed the GUI desktop on the server last week just to see how it would work. Now I’m wondering what if I install Ubuntu on to the new drive and copy everything via usb to it? Would that work?

> On Jan 18, 2021, at 7:08 PM, Rich Freeman <r-plug@thefreemanclan.net> wrote:
> 
> On Mon, Jan 18, 2021 at 4:33 PM H Mottaleb <h_mottaleb@yahoo.com> wrote:
>> 
>> How about I re-install everything except the Eth1 chain. Would it be possible to copy over just the /var/lib/goetherium volume?
>> 
> 
> That is what I would do.  It wouldn't actually be very difficult.  The
> hard part is trying to explain exactly how to do it.
> 
> Simplest way would be just to mount the old partition and copy the
> files over, preserving permissions on them (cp -a would work).  I'm
> not sure if anybody wants to take a stab at that.
> 
> If you can set up the new drive and boot from it, the old partition
> should be available under /dev/ubuntu-vg/geth.  You should be able to
> do something like:
> 
> mkdir /mnt/old
> mount /dev/ubuntu-vg/geth /mnt/old
> cp -a /mnt/old/* /var/lib/goetherium/
> umount /mnt/old
> 
> Of course, you'd need to be careful to not wipe out your old
> partitions when you install ubuntu on the new drive.  (Granted if you
> do it just costs you a few days to re-download it all.)  I'm not sure
> what ubuntu does if it sees an existing volume group called ubuntu-vg
> either.  You'll need to have enough space on root to store those
> files, and since your drive is likely going to be smaller now you'll
> need to be careful about fragmenting it, so we might deal with that
> problem differently from before.
> 
> This stuff isn't too hard to do, but it is a bit tricky to do over
> email.  If you want to try creating a new host you can again post the
> output of df -h, lvs, pvs, vgs, blkid so that we can see what is going
> on.
> 
> If this is a different host you could potentially just copy the files
> over the network.  That isn't too hard, but will happen at network
> speed (for hundreds of gigabytes it can take hours even on 1Gb
> ethernet), and it requires setting up ssh which will also be tricky
> over email...
> 
> I'm sure this must all be frustrating.  Usually we try to get people
> who are new to linux to do stuff like install a desktop distro and
> play around with browsers, text editors, and so on.  Generally you're
> not messing around with hardware RAID, LVM, unpackaged services, and
> so forth on day one...
> 
> Rich
> 
> 
> --
> Rich

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