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dm-vdo / vdo

Userspace tools for managing VDO volumes.
GNU General Public License v2.0
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Create VDO with more than one device??? #41

Closed gilbertoferreira closed 2 years ago

gilbertoferreira commented 3 years ago

How can we achieve this? I just can see that --device flag accept one volume per vdo. Is that right??

Thanks

rhawalsh commented 3 years ago

Hi @gilbertoferreira,

Correct, --device must be only specified once and can only point at a block device. If you want to aggregate multiple devices together, you will need to assemble something underneath such as an LVM stack, or MD RAID, or something else.

gilbertoferreira commented 3 years ago

Hi @gilbertoferreira,

Correct, --device must be only specified once and can only point at a block device. If you want to aggregate multiple devices together, you will need to assemble something underneath such as an LVM stack, or MD RAID, or something else.

What if I use ZFS?? Should bring some advantage??

rhawalsh commented 3 years ago

Hi @gilbertoferreira,

I'm not sure. That is not a configuration we test. Is there a particular kind of functionality that you require for your system?

gilbertoferreira commented 3 years ago

Hi @gilbertoferreira,

I'm not sure. That is not a configuration we test. Is there a particular kind of functionality that you require for your system?

Just wanna use more then one device in order to create some sort of RAID1 or RAID10... Something like that.

Klaas- commented 3 years ago

I think red hat recommends lvm+vdo for that kind of things https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/deduplicating_and_compressing_logical_volumes_on_rhel/index ; if you run zfs with compression and deduplication I don't think you'd need vdo