Can lvmvdo be added to PVE out of the box?

W

werter

Well-Known Member
Dec 10, 2017
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Hi there.
Can lvmvdo be added to PVE out-of-the-box? It would be very convenient!
lvmvdo can deduplicating and compressing logical volumes. At the same time, the cost of deduplication is much less than that of zfs.

P.s. Installation steps of kvdo + vdo on Debian 11 https://github.com/dm-vdo/vdo/issues/47
 
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VDO works totally different from ZFS deduplication (not saying that that one works well in practice, at least for hypervisor storage use case):
- VDO volumes are pretty restricted in what you can put on them
- deduplication is per volume (not across volumes, like with ZFS), with a 1:1 correspondence of pools to volumes (which makes administration/monitoring a PITA)
- the memory requirements are not neglible

do you have any practical experience with it that would warrant ignoring the above negative aspects?
 
fabian said:
VDO works totally different from ZFS deduplication (not saying that that one works well in practice, at least for hypervisor storage use case):
- VDO volumes are pretty restricted in what you can put on them
- deduplication is per volume (not across volumes, like with ZFS), with a 1:1 correspondence of pools to volumes (which makes administration/monitoring a PITA)
- the memory requirements are not neglible

do you have any practical experience with it that would warrant ignoring the above negative aspects?
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Hi.
Thx for your answer )
I only heard reviews about vdo.
They are also on this forum https://forum.proxmox.com/threads/virtual-data-optimizer-vdo.42838/

Zfs deduplication memory requirements much higher then lvmvdo. 1GB RAM for 1 TB disk space for zfs deduplication and ~500MB RAM for lvmvdo dedup.

Is it that so hard to add lvmvdo support to PVE out of the box? This would be some kind of alternative to zfs.
 
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Would certainly be nice to have the compression option. I’ve found dedup to be working great, will cost a ton of ram. But.. this option can be disabled with vdo, which leaves us with compression!
 
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