In case of virtio_scsi, you should use following:

/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_{{ disk_id[:-16] }}

Where disk_id[:-16], is id which you get from API, for example:

 /api/disks/cdb62095-62ba-4137-8fa0-6375748d8868

so the result path is:

 /dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_cdb62095-62ba-4137-8

Which is symlink to sda, sdb, sdX...

On 10/30/18 12:01 PM, Markus Schaufler wrote:
Hi!

We are developing a tool for automated vm rollouts and struggle with the disk 
ordering which seems to be completly random?
ie. when creating a vm with 3 disks the order on the virtio scsi bus is 
different each time - which of course causes troubles when executing the next 
steps.

Thanks for any hints on this!
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