Snapshot of/von CT on/auf Ext Storage

[Witker]

These are many threads, but they are not clear for me
Therefore, my explicit question to make clear:

1 ) is it possible with Synology?

2) How to set this up with external Disc on USB?

Please a How-to
I think I'm not alone with this Question
THX

---------------------
Es gibt viele Threads zu dem Thema, aber sie sind mir nicht klar!
Daher meine explizite Frage, um das zu klären :

1) Ist das mit Synology möglich?

2) Wie richte ich das auf einer externen Disc mit USB ein?

Ich bitte eine Anleitung

Ich denke, ich bin mit dieser Frage nicht allein

Danke

 

[Alwin]

See our documentation on the storage types. There you will find which storage supports snapshots.
https://pve.proxmox.com/pve-docs/chapter-pvesm.html

 

[Witker]

1) Ist das mit Synology möglich?

Snapshots von Containern zu machen?
Was Muss dazu Wo eingestellt werden?

 

[Alwin]

This is the English side of the forum. Please respond in English or we move the thread into the international section.

Snapshots von Containern zu machen?

It was not mentioned earlier. And it needs a snapshot-capable storage underneath, since it is either a raw image mapped or a directory.

 

[Witker]

And it needs a snapshot-capable storage underneath, since it is either a raw image mapped or a directory.

THX
Can you pls tell me how to set this up?

1st on Synology = what to do?

 

[Alwin]

Can you pls tell me how to set this up?

As said previously, the storage needs to be capable of doing snapshots. If not then you will need to use qcow2 image files on VM creation.
https://pve.proxmox.com/pve-docs/chapter-pvesm.html

1st on Synology = what to do?

Cifs/NFS use qcow2.

 

[Witker]

on VM creation.

The topic is

Snapshot of/von CT on/auf Ext Storage​

Pls. don't mix up
Its hard as a newbie to follow all these stuff because you dot have HoTo's

I'm more a USER and want to use Proxmox for the projects -
Now proxmox more and more itself becomes the project to get all set up to start.
I always have to stop and move or repair something under the hood

 

[Alwin]

Well, you will need to use VMs.

 

[Witker]

Well, you will need to use VMs.

NO!
Your answer in .....
There are other ways to get external storage in Proxmox with this possibilities!
eg. a Synology LUN.

 

[Alwin]

eg. a Synology LUN.

Look at the storage types in the link. iSCSI doesn't support snapshots from the Proxmox VE side. And Synology doesn't run ZFS.
https://pve.proxmox.com/pve-docs/chapter-pvesm.html

 

[Witker]

If not then you will need to use qcow2 image files on VM creation.

So
as I result so far a got:

It is not possible to create a CT based in qcow2!
qcow2 is only possible with VM not in a CT!

Right This time?

Pls. confirm

 

[Alwin]

It is not possible to create a CT based in qcow2.
qcow2 is only possible with VM not in a CT
Right This time?

Yes, this is correct. With that said, you may be able to do snapshots on the Synology side. But Proxmox VE won't be aware about them.
https://www.synology.com/en-global/dsm/feature/snapshot_replication

 

[Witker]

So finally
One step done - Alleluia
THX

As CTs are only possible in raw

Now let's look at possibilities with a storage from Synology.

 

[Witker]

I think

will be good to take?

What do you think?

 

[Alwin]

But LVM-thin is not shared. It's a local storage. And before you ask, it shouldn't be used on iSCSI. It makes it possible when a second node writes onto such storage it will overwrite data. This is because of the thin provisioning.

 

[Witker]

But LVM-thin is not shared. It's a local storage. And before you ask, it shouldn't be used on iSCSI.

And that's the solution!
Great!
What do you think?

 

[Alwin]

LVM-thin is used on a local disk not the Synology. While I suppose to understand where you are going with this, I do not recommend it.

 

[Witker]

I do not recommend it.

Why?

 

[Alwin]

It makes it possible when a second node writes onto such storage it will overwrite data. This is because of the thin provisioning.

Because of this. And if you know what you are doing, then you don't need to ask.

 

[Witker]

I have no second node (Server) on Proxmox & if this is the only reason
It's Save Right?