Ceph and replications

[ocerda]

Hi, I have several questions.

Ceph: I have three 1TB disks connected by osd, but I read that this storage is similar to a raid, so how much capacity do I have in total? And how to operate ceph.

If I have this allegiance, what is the use now of making replications? Is it useful to do them?

 

[Alwin]

I hope this helps in understanding how ceph uses the disk space.
https://forum.proxmox.com/threads/ceph-storage-calculation.40879/#post-197306

 

[ocerda]

Hello,

I have proxmox installed as local-lvm, and I have read that if it is not installed as zfs I can not use replication.

But you can add a zfs directory, this how do I do it? I have a 1TB disk where I want the machines to be replicated, as I format it in zfs. And then I create the pool and I add it?

 

[Alwin]

@ocerda, how is this related to your original post? If not, please open up a new thread for this.

 

[ocerda]

@ocerda, how is this related to your original post? If not, please open up a new thread for this.

Sorry, I thought you answered.

I already know how ceph-storage works, my second question question from the previous post, was related to replication.

I tried to replicate a machine and it gives me this error:



I have searched for information and it is because I do not have proxmox installed in zfs, if I do not want to change my installation, how can I also use replication separately?

I add more discs in each node? And after that?

In the image you will see my current configuration.

Thanks.

 

[ocerda]

Sorry, the error of replication is as follows.
No replicatable volumes found (500)
I forgot to put it.

 

[dijon]

any progess on this? i'm also getting this error.
I did a zfs send/recv from a system outside of my cluster and attached the vhd's on the clustered system.

even on the command line I get the dreaded "No replicatable volumes found (500)" message.