virtual hardware raid

[tincboy]

I wonder if it's possible to connect two hdd files to a KVM VM and configure QEMU to use them as hardware raid? ( not doing it by software raid in the VM )
It's use full when a physical server has two real HDD drives but no hardware raid controller,

 

[tom]

hardware raid is hardware raid, you cannot create hardware with software. but if you can figure this out, you will be a rich man ...

but maybe I did not understand your question.

 

[tincboy]

hardware raid is hardware raid, you cannot create hardware with software. but if you can figure this out, you will be a rich man ...

but maybe I did not understand your question.

Thanks Tom,

I mean we simulate hardware raid for VM with software configuration on host server,

 

[udo]

Thanks Tom,

I mean we simulate hardware raid for VM with software configuration on host server,

Hi,
not tested, but if you create an softwareraid on pve (eg. /dev/md0) and use something like "ide1: /dev/md0" in the vm-config should that work (why not).

But what is the benefit?

Udo

 

[tincboy]

Hi,
not tested, but if you create an softwareraid on pve (eg. /dev/md0) and use something like "ide1: /dev/md0" in the vm-config should that work (why not).

But what is the benefit?

Udo

I want to simulate hardware raid for VM on a dedicated server which has two HDD but no hardware raid.

 

[GT1]

I want to simulate hardware raid

lol ! but seriously, that's just dumb imho. a disk dies, and you have to take down the whole system to replace it. kinda defies the purpose of a raid. dont be cheap, get a hw raid card (as example a 3ware card is not expensive at all nowadays), and spare yourself the trouble you'll run into once something goes wrong.