[Cialug] ubuntu disk storage

[Scott Yates]

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
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