Hi ,
You can also check if BOOM boot manager can work with thin LVM.
I really like that feature, since CentOS7.x
Best Regards,
Strahil NikolovOn Sep 27, 2019 12:39, Georgios <gpdsbe+centos at
mailbox.org> wrote:>
> Hi there!
>
> Im new here.
>
> Im trying to install Centos 8 on my laptop. I also want to have a
> contingency plan in case something brakes.
>
> My first thoughts were to use LVM.
>
> The idea is that i would take multiple snapshots of the system during
> the day/week and will keep them for a short time.
>
> I read RHEL documentation about how lvm works and pretty much understand
> how to manage the above scenario with LVM snapshots and encryption.
> If i understood lvm snapshots will cause delay the system after multiple
> snapshots.? The best way to avoid it is using thin snapshots.
>
> At rhel documentation it says that is possible for a non thin volume to
> get a thin snapshots.
>
> [Correct me if my above assumptions are wrong or if there is a better
> solution for my purpose.]
>
> So i created a group with 3 volumes groups and one thin pool.
>
> Im trying to take a snapshot and i get the message.
>
> "Cannot use writable LV as the external origin."
>
> I read somewhere that i should change it to read only and then take a
> snapshot. Although that would be a problem i just try it to see if it
> works. Then i got the message
>
> "Cannot use active LV for the external origin"
>
> Any ideas???
>
> Thanks in advance
>
> Georgios
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