[Cialug] ubuntu disk storage

[chris at bynw.com]

The original home directory on the main physical drive is still there 
and just renamed to home_backup. It hasn't been deleted or anything.

But when I try to reverse the instructions given at the website in my 
previous email (see below). I can't rename the current home directory to 
something else. I always get a message the resource is busy. Would I 
have to unmount it rename it and thus force the system to see the 
original directory?

Or could that be done in recovery or emergency mode?

Thoughts? I'm trying to avoid having to wipe and restart from scratch if 
possible.

Thanks

On 2022-02-24 10:10, chris at bynw.com wrote:
> I am thinking this is going to be the best course of action. I want to
> preserve more than just the /home directory though. There are other
> things running that need to be preserved. But of course I don't want
> the LVM setup.
> 
> 
> 
> On 2022-02-22 11:49, Scott Yates wrote:
>> Your best bet is to pull a full backup of /home and start over I would
>> think.
>> LVM does not do redundancy.  For that you need mdadm i think, and
>> preferably, zfs for it's block level corruption self healing.
>> 
>> 
>> On Tue, Feb 22, 2022 at 11:46 AM <chris at bynw.com> wrote:
>> 
>>> I did explain that if we moved the /home directory to the LVM space
>>> there could be a loss if one of the physical drives in the LVM space
>>> died. It wasn't a concern. So I followed the instructions here:
>>> https://techsparx.com/linux/disks/ubuntu-move-home.html to move /home 
>>> to
>>> the "2nd drive" aka the LVM space.
>>> 
>>> But since the weekend has passed he's changed his mind. And wants the
>>> LVM space to be a RAID so the /home directory doesn't die without 
>>> some
>>> form of redundancy.
>>> 
>>> I'm not sure I can move the /home back to the main drive or change 
>>> the
>>> LVM space to a RAID without totally redoing things on the LVM but 
>>> that
>>> would also mean I have to move the /home directory back to the 
>>> primary
>>> drive. And I cant figure out how to get that done.
>>> 
>>> -Chris
>>> 
>>> On 2022-02-18 15:11, L. V. Lammert wrote:
>>> > On Fri, 18 Feb 2022 chris at bynw.com wrote:
>>> >
>>> >> Actually Dave's response and the others have been very helpful on this
>>> >> little learning project. Thank you so much.
>>> >> Next question ..... can I move the /home directory to this LVM space??
>>> >>
>>> > Sure, ... but remember, there is no redundance with LVM - a LVM is
>>> > "logical", and relies on the underlying "physical" layer to provide
>>> > reduncancy a la RAID.
>>> >
>>> > All LVM provides is the ability to span multiple physical partitions
>>> > into
>>> > a single logical partition, .. if one drive dies, everything is toast
>>> > unless the physical volumes are part of a RAID configuration.
>>> >
>>> > That is the main reason I prefer RAID6 over LVM - much easier to
>>> > extend,
>>> > and much simpler to manage with mdadm.
>>> >
>>> >       Lee
>>> > _______________________________________________
>>> > Cialug mailing list
>>> > Cialug at cialug.org
>>> > https://www.cialug.org/cgi-bin/mailman/listinfo/cialug
>>> _______________________________________________
>>> Cialug mailing list
>>> Cialug at cialug.org
>>> https://www.cialug.org/cgi-bin/mailman/listinfo/cialug
>>> 
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> https://www.cialug.org/cgi-bin/mailman/listinfo/cialug
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> https://www.cialug.org/cgi-bin/mailman/listinfo/cialug