Datacenter migration only works in one direction

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metaltech

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May 5, 2023
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OK I have a 3 node cluster running ceph storage and a single node with a shared ISCSI storage. Both are connected to a datacenter manager which running on a VM on the "single-node" when I select a vm "On the cluster" to migrate the "single node" all is find, however is I try to oppsite migrating a vm from "Single node" iscsi share to the "cluster" it fails with a error that says:
( found local disk 'Proxmox-synologyLUN:vm-100-disk-0' (attached)
can't migrate local disk 'Proxmox-synologyLUN:vm-100-disk-0': can't get size of '/dev/Proxmox-LUN-1/vm-100-disk-0': Failed to find logical volume "Proxmox-LUN-1/vm-100-disk-0) and yes that is the correct path.
Would this be considered a bug.
 
Hi @metaltech,

yes this is a bug, we also have this issue regarding ceph or iSCSI.

We have 3x 3-Node-Ceph-Clusters Connected via PDM and it sometimes didn't work to migrate.
I found a workaround but i'll have to test it again if this is really a solution.
 
metaltech said:
OK I have a 3 node cluster running ceph storage and a single node with a shared ISCSI storage. Both are connected to a datacenter manager which running on a VM on the "single-node" when I select a vm "On the cluster" to migrate the "single node" all is find, however is I try to oppsite migrating a vm from "Single node" iscsi share to the "cluster" it fails with a error that says:
( found local disk 'Proxmox-synologyLUN:vm-100-disk-0' (attached)
can't migrate local disk 'Proxmox-synologyLUN:vm-100-disk-0': can't get size of '/dev/Proxmox-LUN-1/vm-100-disk-0': Failed to find logical volume "Proxmox-LUN-1/vm-100-disk-0) and yes that is the correct path.
Would this be considered a bug.
Click to expand...

could you provide
- "pveversion -v" from both sides
- the VM config
- the storage.cfg
- the full migration task log

thanks!
 
metaltech said:
OK I have a 3 node cluster running ceph storage and a single node with a shared ISCSI storage. Both are connected to a datacenter manager which running on a VM on the "single-node" when I select a vm "On the cluster" to migrate the "single node" all is find, however is I try to oppsite migrating a vm from "Single node" iscsi share to the "cluster" it fails with a error that says:
( found local disk 'Proxmox-synologyLUN:vm-100-disk-0' (attached)
can't migrate local disk 'Proxmox-synologyLUN:vm-100-disk-0': can't get size of '/dev/Proxmox-LUN-1/vm-100-disk-0': Failed to find logical volume "Proxmox-LUN-1/vm-100-disk-0) and yes that is the correct path.
Would this be considered a bug.
Click to expand...
OK I apologize, I should've updated this sooner! This was completely my fault and not the Datacenter manager. I had in the process of testing destroyed the underlying storage of that VM above that I was testing with.
 
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