question about extracting variables from json - json

Question

I have bellow json output:
I have to get "holders"("VG_ROOT-var", "VG_ROOT-root", "VG_ROOT-tmp")
from all sd* drives *
tries to use something like this in ansible:
"gather_host_facts_result.ansible_facts.ansible_devices.sd*"
unfortunately at this stage I already have a problem. Could someone help me?
how to specify "*" in the query to go to the rest of the structure?
{
"msg": [
{
"dm-0": {
"holders": [],
"host": "",
"links": {
"ids": [
"dm-name-VG_ROOT-root",
"dm-uuid-LVM-YMwN1WVoYYOwj8ZRJ5ZBdpMSlPTiiOAOgCughz5IwAC91ILXxeQEkJU4NnhDgfGf"
],
"labels": [],
"masters": [],
"uuids": [
"97c2a8ff-e21f-4869-9b0f-bbba523dc487"
]
},
"model": null,
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "",
"sectors": "123723776",
"sectorsize": "512",
"size": "59.00 GB",
"support_discard": "0",
"vendor": null,
"virtual": 1
},
"dm-1": {
"holders": [],
"host": "",
"links": {
"ids": [
"dm-name-VG_DATA-data",
"dm-uuid-LVM-htvEwSfXRtyxN1j7V4A2BSdeKJGBTLqiPBERZVCP8ZOr4uMWSmopoedAQvSZ4gXJ"
],
"labels": [],
"masters": [],
"uuids": [
"4c4c89ab-df3f-4647-aa37-c04c9175b804"
]
},
"model": null,
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "",
"sectors": "62906368",
"sectorsize": "512",
"size": "30.00 GB",
"support_discard": "0",
"vendor": null,
"virtual": 1
},
"dm-2": {
"holders": [],
"host": "",
"links": {
"ids": [
"dm-name-VG_SWAP-swap",
"dm-uuid-LVM-SHCF191xu9CcjovlxavjqUXI1yBmVdLTxbd24kHS8fkcAlDkbMcXlAlsY7m0soMF"
],
"labels": [],
"masters": [],
"uuids": [
"97999edf-ccb5-45c8-87c6-23d2a5771146"
]
},
"model": null,
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "",
"sectors": "20963328",
"sectorsize": "512",
"size": "10.00 GB",
"support_discard": "0",
"vendor": null,
"virtual": 1
},
"dm-3": {
"holders": [],
"host": "",
"links": {
"ids": [
"dm-name-VG_ROOT-tmp",
"dm-uuid-LVM-YMwN1WVoYYOwj8ZRJ5ZBdpMSlPTiiOAOqId09qrO6vwn9z7306ZkWhRyiXS4d1jy"
],
"labels": [],
"masters": [],
"uuids": [
"325d6523-4e1f-4352-ab39-1e7259b613c5"
]
},
"model": null,
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "",
"sectors": "20971520",
"sectorsize": "512",
"size": "10.00 GB",
"support_discard": "0",
"vendor": null,
"virtual": 1
},
"dm-4": {
"holders": [],
"host": "",
"links": {
"ids": [
"dm-name-VG_ROOT-var",
"dm-uuid-LVM-YMwN1WVoYYOwj8ZRJ5ZBdpMSlPTiiOAOTz6mFIEVsHJN4B0hOAV0RlVdmm293Z0L"
],
"labels": [],
"masters": [],
"uuids": [
"41f5cd6a-fa50-4ac3-a14d-693d23a3df87"
]
},
"model": null,
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "",
"sectors": "20971520",
"sectorsize": "512",
"size": "10.00 GB",
"support_discard": "0",
"vendor": null,
"virtual": 1
},
"sda": {
"holders": [],
"host": "Serial Attached SCSI controller: VMware PVSCSI SCSI Controller (rev 02)",
"links": {
"ids": [],
"labels": [],
"masters": [],
"uuids": []
},
"model": "Virtual disk",
"partitions": {
"sda1": {
"holders": [],
"links": {
"ids": [],
"labels": [],
"masters": [],
"uuids": [
"3C14-A798"
]
},
"sectors": "2097152",
"sectorsize": 512,
"size": "1.00 GB",
"start": "2048",
"uuid": "3C14-A798"
},
"sda2": {
"holders": [
"VG_ROOT-var",
"VG_ROOT-root",
"VG_ROOT-tmp"
],
"links": {
"ids": [
"lvm-pv-uuid-9Mm0hj-z0vg-WEhd-7MyB-xcp1-mEI3-XZENN8"
],
"labels": [],
"masters": [
"dm-0",
"dm-3",
"dm-4"
],
"uuids": []
},
"sectors": "165672927",
"sectorsize": 512,
"size": "79.00 GB",
"start": "2099200",
"uuid": null
}
},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "bfq",
"sectors": "167772160",
"sectorsize": "512",
"size": "80.00 GB",
"support_discard": "0",
"vendor": "VMware",
"virtual": 1
},
"sdb": {
"holders": [
"VG_SWAP-swap"
],
"host": "Serial Attached SCSI controller: VMware PVSCSI SCSI Controller (rev 02)",
"links": {
"ids": [
"lvm-pv-uuid-m2YPQe-ofBp-AjUa-qAfQ-Bcy6-xTpj-WyNFU1"
],
"labels": [],
"masters": [
"dm-2"
],
"uuids": []
},
"model": "Virtual disk",
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "bfq",
"sectors": "20971520",
"sectorsize": "512",
"size": "10.00 GB",
"support_discard": "0",
"vendor": "VMware",
"virtual": 1
},
"sdc": {
"holders": [
"VG_DATA-data"
],
"host": "Serial Attached SCSI controller: VMware PVSCSI SCSI Controller (rev 02)",
"links": {
"ids": [
"lvm-pv-uuid-X47VTO-03iG-WVw4-ww8p-PH0v-hlGj-wU1t7F"
],
"labels": [],
"masters": [
"dm-1"
],
"uuids": []
},
"model": "Virtual disk",
"partitions": {},
"removable": "0",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "bfq",
"sectors": "62914560",
"sectorsize": "512",
"size": "30.00 GB",
"support_discard": "0",
"vendor": "VMware",
"virtual": 1
},
"sr0": {
"holders": [],
"host": "IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)",
"links": {
"ids": [
"ata-VMware_Virtual_IDE_CDROM_Drive_10000000000000000001"
],
"labels": [],
"masters": [],
"uuids": []
},
"model": "VMware IDE CDR10",
"partitions": {},
"removable": "1",
"rotational": "1",
"sas_address": null,
"sas_device_handle": null,
"scheduler_mode": "bfq",
"sectors": "2097151",
"sectorsize": "512",
"size": "1024.00 MB",
"support_discard": "0",
"vendor": "NECVMWar",
"virtual": 1
}
}
]
}

Answer 1

I created something like this:
- name: disks
hosts: localhost
become: false
gather_facts: false
tasks:
- name: hardware
setup:
gather_subset:
- hardware
register: gather_host_facts_result
- name: The output
debug:
msg:
- "{{ gather_host_facts_result.devices | dict2items | selectattr('key', 'match', '^sd.*') | map(attribute='value.holders') | flatten }}"
But this dosen't work.
I'd like to pull all holders f.e VG ROOT-var, VG _ROOT-rootVG _ROOT-tmp from all sd * disks.
The output should look like this:
sda2:
"VG_ROOT-var",
"VG_ROOT-root",
"VG_ROOT-tmp"
sdc
"VG_DATA-data"
sdb
"VG_SWAP-swap"