[Cialug] ubuntu disk storage

[chris at bynw.com]

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
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