ansible_facts['device_links']['ids'] empty for RHEL9 on AWS

[Rowe, Walter P. (Fed)]

I am querying ansible facts of AWS EC2s to get volume IDs without having to use the AWS API. Prior to Red Hat 9 I could use ansible_device_links['ids'][device name] to get the associated volume ID.

REDHAT 8

    "ansible_facts": {
        "ansible_device_links": {
            "ids": {
                "nvme0n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8",
                    "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],

Starting with Red Hat 9 we seem to have lost this info.

REDHAT 9

    "ansible_facts": {
        "ansible_device_links": {
            "ids": {},

Is this something unique to my environment or is this something that changed with RHEL facts?

Walter
--
Walter Rowe, Division Chief
Infrastructure Services Division
Mobile: 202.355.4123

REDHAT 8

{
    "ansible_facts": {
        "ansible_device_links": {
            "ids": {
                "nvme0n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8",
                    "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme0n1p1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8-part1",
                    "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part1",
                    "wwn-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part1"
                ],
                "nvme0n1p2": [
                    "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8-part2",
                    "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part2",
                    "wwn-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part2"
                ],
                "nvme1n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0abf628274ab398f2",
                    "nvme-nvme.1d0f-766f6c3061626636323832373461623339386632-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme2n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0690b9672f6e52240",
                    "nvme-nvme.1d0f-766f6c3036393062393637326636653532323430-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme3n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol08404f1191eb63440",
                    "nvme-nvme.1d0f-766f6c3038343034663131393165623633343430-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme4n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol081f2b191f4e7d7cc",
                    "nvme-nvme.1d0f-766f6c3038316632623139316634653764376363-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme5n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol0b51ac580c17c745e",
                    "nvme-nvme.1d0f-766f6c3062353161633538306331376337343565-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme6n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol07427283fef5d12ad",
                    "nvme-nvme.1d0f-766f6c3037343237323833666566356431326164-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ],
                "nvme7n1": [
                    "nvme-Amazon_Elastic_Block_Store_vol07c3177d94a329f70",
                    "nvme-nvme.1d0f-766f6c3037633331373764393461333239663730-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
                ]
            },
            "labels": {
                "nvme1n1": [
                    "tmp"
                ],
                "nvme2n1": [
                    "swap"
                ],
                "nvme3n1": [
                    "apps"
                ],
                "nvme4n1": [
                    "external"
                ],
                "nvme5n1": [
                    "archive"
                ],
                "nvme6n1": [
                    "orafra"
                ],
                "nvme7n1": [
                    "oradata"
                ]
            },
            "masters": {},
            "uuids": {
                "nvme0n1p2": [
                    "c9aa25ee-e65c-4818-9b2f-fa411d89f585"
                ],
                "nvme1n1": [
                    "e5d6f42e-45ca-4b3b-8492-46314d453a31"
                ],
                "nvme2n1": [
                    "5fd97b83-1ed6-4237-92cc-c95462493da6"
                ],
                "nvme3n1": [
                    "1130bd72-a26f-487f-8cd9-651618f8e840"
                ],
                "nvme4n1": [
                    "c99caa7c-15c8-4292-8ff1-6f5800f6ddc7"
                ],
                "nvme5n1": [
                    "e04f1c49-d88e-4fa1-93de-9418e1801a2d"
                ],
                "nvme6n1": [
                    "c38b2d4d-789c-46e6-a46f-e6f1fc7ce363"
                ],
                "nvme7n1": [
                    "57406353-bf84-4f63-8fce-d4ff8d786aa1"
                ]
            }
        },
        "discovered_interpreter_python": "/usr/bin/python3.12"
    },
    "changed": false
}


REDHAT 9

{
    "ansible_facts": {
        "ansible_device_links": {
            "ids": {},
            "labels": {
                "xvda3": [
                    "boot"
                ],
                "xvda4": [
                    "root"
                ]
            },
            "masters": {},
            "uuids": {
                "xvda2": [
                    "7B77-95E7"
                ],
                "xvda3": [
                    "0e2c50ac-b7b2-4076-b753-43ae01e1e0d1"
                ],
                "xvda4": [
                    "658dabc8-57f5-4844-8315-01562be5c996"
                ]
            }
        },
        "discovered_interpreter_python": "/usr/bin/python3.9"
    },
    "changed": false
}

[Abhijeet Kasurde]

What is the content of /dev/disk/by-id on AWS EC2 instance?

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Thanks,

Abhijeet Kasurde

[Rowe, Walter P. (Fed)]

Bravo! It is empty on the RHEL9 system and populated on the RHEL8 system.

Now I need to determine why.

Walter
--
Walter Rowe, Division Chief
Infrastructure Services Division
Mobile: 202.355.4123