[linux-lvm] lvm limitations

[Stuart D Gathman]

On Tue, 15 Sep 2020, Tomas Dalebjörk wrote:

> ok, lets say that I have 10 LV on a server, and want create a thin lv
> snapshot every hour and keep that for 30 days that would be 24h *
> 30days * 10lv = 720 lv

> if I want to keep snapshot copies from more nodes, to serve a single
> repository of snapshot copies, than these would easily become several
> hundred thousands of lv

> not sure if this is a good idea, but I guess it can be very useful in
> some sense as block level incremental forever and instant recovery can
> be implemented for open sourced based applications
>
> what reflections do you have on this idea?

My feeling is that btrfs is a better solution for the hourly snapshots.
(Unless you are testing a filesystem :-)

I find "classic" LVs a robust replacement for partitions that are easily
resized without moving data around.  I would be more likely to try
RAID features on classic LVs than thin LVs.