[Cialug] ubuntu disk storage

[Jim Cole]

If no redundancy is needed and you want the drives to be able to be
independently used later (can I pull a single drive and put it in another
machine and read the files, then I would use a union type of software. My
personal favorite of those is mergerfs. The dev is very active, has his own
discord and is quite helpful.

There are several options in this space: unionfs, overlayfs in the kernel,
mergerfs. It all depends on what options you need. I find mergerfs fit well
with what I need.

Cheers from across the pond,
-Jim


On Sat, Feb 19, 2022 at 1:57 AM David Champion <dchamp1337 at gmail.com> wrote:

> I would recommend you set up a sandbox on a VM, spare PC, rpi or whatever
> and try your lvm stuff there before you destroy real data.
>
> This series is a pretty good read.
>
> https://www.redhat.com/sysadmin/create-physical-volume
>
> -dc
>
> On Fri, Feb 18, 2022, 3:12 PM L. V. Lammert <lvl at omnitec.net> 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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