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> would want to have compression..

I learned about VDO today. [0][1] I'd never heard of it before, but I'm using Gentoo Linux and both the dm-vdo kernel module and the 'vdo' software provided by [1] are distributed by Gentoo... so this isn't some weirdo Red Hat thing. It looks like you manage and used these just like any other thin-provisioned LVM volume [2], but -like I said- I've not used this before, and have only just skimmed the docs, so it's possible that I'm missing something important.

[0] <https://docs.redhat.com/en/documentation/red_hat_enterprise_...>

[1] <https://github.com/dm-vdo/vdo>

[2] <https://docs.redhat.com/en/documentation/red_hat_enterprise_...>



Yeah, I know that thing, but oddly they support only lz4 compression which is much weaker to zstd used everywhere else.


I don't see that as odd. It looks like it was released at about the same time that zstd was getting added to filesystems, and a little bit prior to when IBM acquired Red Hat. It's quite possible that IBM decided that "little" things like enhancing LVM aren't worth the money.


Its odd to me because it looks trivial to add another compression algorithm implementation




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