Hello, I’m deploying some Linux VMs with terraform and provisioning them with ansible. Each VM has 2 disks, 1 partitioned with lvm for the os install and 1 unpartitioned for data. I want to format and partition the disk using ansible. Unfortunately, hardcoding identifiers (/dev/sdX) doesn’t work in this case because the identifier isn’t consistent across deployments.
Some deployments the data disk is /dev/sda and some deployments it’s /dev/sdb.
Any guidance on how I can dynamically choose which disk to format and partition?
My terraform module currently hardcodes 2 disks. I’ve tried specifying unit_number but it doesn’t have any effect unfortunately.
disk {
label = "disk0"
size = var.disk_size
unit_number = 0
eagerly_scrub = var.eagerly_scrub
thin_provisioned = var.thin_provisioned
}
disk {
label = "disk1"
attach = true
unit_number = 1
path = var.vmdk_path
datastore_id = var.data_datastore_id
}