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linux-system-roles
lvm vdo: storage_test_actual_size != storage_test_requested_size with big size which equal 200 times of vdo_pool_size
palybook
---
- hosts: all
become: true
vars:
storage_safe_mode: false
mount_location: '/opt/test1'
volume_group_size: '10g'
volume_size: '9g'
logical_size: '20g'
small_logical_size: '8g'
invalid_size: 'xyz GiB'
too_large_size: '2286g'
too_large_size1: '2287g'
tasks:
- include_role:
name: linux-system-roles.storage
- include_tasks: get_unused_disk.yml
vars:
min_size: "{{ volume_group_size }}"
max_return: 1
- name: Create LVM VDO volume under volume group 'pool1' with 254 times the size of the physical volume
include_role:
name: linux-system-roles.storage
vars:
storage_pools:
- name: pool1
disks: "{{ unused_disks }}"
vdo_compression: true
vdo_deduplication: true
vdo_logical_size: "{{ too_large_size }}"
volumes:
- name: volume1
size: "{{ volume_size }}"
fs_create_options: "-K"
mount_point: "{{ mount_location }}"
- include_tasks: verify-role-results.yml
ansible running log
TASK [parse the actual size of the volume] *************************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:3
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: root
<localhost> EXEC /bin/sh -c 'echo ~root && sleep 0'
<localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp `"&& mkdir "` echo /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489 `" && echo ansible-tmp-1611641047.561889-43598-186997938471489="` echo /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489 `" ) && sleep 0'
Using module file /root/test/storage/library/bsize.py
<localhost> PUT /root/.ansible/tmp/ansible-local-42208cifiehst/tmpkmtv69st TO /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489/AnsiballZ_bsize.py
<localhost> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489/ /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c '/usr/libexec/platform-python /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c 'rm -f -r /root/.ansible/tmp/ansible-tmp-1611641047.561889-43598-186997938471489/ > /dev/null 2>&1 && sleep 0'
ok: [localhost] => {
"bytes": 2418925581107,
"changed": false,
"invocation": {
"module_args": {
"size": "2.2T"
}
},
"lvm": "2t",
"parted": "2TiB",
"size": "2 TiB"
}
TASK [parse the requested size of the volume] **********************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:9
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: root
<localhost> EXEC /bin/sh -c 'echo ~root && sleep 0'
<localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp `"&& mkdir "` echo /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967 `" && echo ansible-tmp-1611641048.3741238-43615-63550123932967="` echo /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967 `" ) && sleep 0'
Using module file /root/test/storage/library/bsize.py
<localhost> PUT /root/.ansible/tmp/ansible-local-42208cifiehst/tmpx8ga9p71 TO /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967/AnsiballZ_bsize.py
<localhost> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967/ /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c '/usr/libexec/platform-python /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c 'rm -f -r /root/.ansible/tmp/ansible-tmp-1611641048.3741238-43615-63550123932967/ > /dev/null 2>&1 && sleep 0'
ok: [localhost] => {
"bytes": 9663676416,
"changed": false,
"invocation": {
"module_args": {
"size": "9g"
}
},
"lvm": "9g",
"parted": "9GiB",
"size": "9 GiB"
}
TASK [parse the requested size in case of VDO] *********************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:15
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: root
<localhost> EXEC /bin/sh -c 'echo ~root && sleep 0'
<localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp `"&& mkdir "` echo /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971 `" && echo ansible-tmp-1611641048.880828-43632-11616973052971="` echo /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971 `" ) && sleep 0'
Using module file /root/test/storage/library/bsize.py
<localhost> PUT /root/.ansible/tmp/ansible-local-42208cifiehst/tmpf38xq65f TO /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971/AnsiballZ_bsize.py
<localhost> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971/ /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c '/usr/libexec/platform-python /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971/AnsiballZ_bsize.py && sleep 0'
<localhost> EXEC /bin/sh -c 'rm -f -r /root/.ansible/tmp/ansible-tmp-1611641048.880828-43632-11616973052971/ > /dev/null 2>&1 && sleep 0'
ok: [localhost] => {
"bytes": 2454573809664,
"changed": false,
"invocation": {
"module_args": {
"size": "2286g"
}
},
"lvm": "2t",
"parted": "2TiB",
"size": "2 TiB"
}
TASK [get requested size] ******************************************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:25
ok: [localhost] => {
"ansible_facts": {
"storage_test_requested_size": {
"bytes": 2454573809664,
"changed": false,
"failed": false,
"lvm": "2t",
"parted": "2TiB",
"size": "2 TiB"
}
},
"changed": false
}
TASK [debug] *******************************************************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:29
ok: [localhost] => {
"storage_test_actual_size": {
"bytes": 2418925581107,
"changed": false,
"failed": false,
"lvm": "2t",
"parted": "2TiB",
"size": "2 TiB"
}
}
TASK [debug] *******************************************************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:32
ok: [localhost] => {
"storage_test_requested_size": {
"bytes": 2454573809664,
"changed": false,
"failed": false,
"lvm": "2t",
"parted": "2TiB",
"size": "2 TiB"
}
}
TASK [assert] ******************************************************************************************************************************************************************************************
task path: /root/test/storage/tests/test-verify-volume-size.yml:35
fatal: [localhost]: FAILED! => {
"assertion": "storage_test_actual_size == storage_test_requested_size",
"changed": false,
"evaluated_to": false,
"msg": "Volume volume1 has unexpected size"
}
PLAY RECAP *********************************************************************************************************************************************************************************************
localhost : ok=112 changed=2 unreachable=0 failed=1 skipped=54 rescued=0 ignored=0
[root@storageqe-62 blivet]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 279.4G 0 disk
├─sda1 8:1 0 600M 0 part /boot/efi
├─sda2 8:2 0 1G 0 part /boot
└─sda3 8:3 0 277.8G 0 part
├─rhel_storageqe--62-root 253:0 0 70G 0 lvm /
├─rhel_storageqe--62-swap 253:1 0 7.9G 0 lvm [SWAP]
└─rhel_storageqe--62-home 253:2 0 200G 0 lvm /home
sdb 8:16 0 279.4G 0 disk
sdc 8:32 0 186.3G 0 disk
└─pool1-vdopool_vdata 253:3 0 9G 0 lvm
└─pool1-vdopool-vpool 253:4 0 2.2T 0 lvm
├─pool1-volume1 253:5 0 2.2T 0 lvm /opt/test1
└─pool1-vdopool 253:6 0 512K 1 lvm
This case is to cover logical size up to 254 times the size of the physical volume
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/deduplicating_and_compressing_logical_volumes_on_rhel/creating-a-deduplicated-and-compressed-logical-volume_deduplicating-and-compressing-logical-volumes
Logical Size
This is the provisioned size that the VDO LV presents to applications. It is usually larger than the available physical size.
VDO currently supports any logical size up to 254 times the size of the physical volume with an absolute maximum logical size of 4 PB.
This still can be reproduced:
playbook
---
- hosts: all
become: true
vars:
storage_safe_mode: false
mount_location: '/opt/test1'
volume_group_size: '10g'
volume_size: '9g'
pool_size: '20g'
small_pool_size: '8g'
invalid_size: 'xyz GiB'
too_large_size: '1800g'
too_large_size1: '2287g'
tasks:
- include_role:
name: linux-system-roles.storage
- include_tasks: get_unused_disk.yml
vars:
min_size: "{{ volume_group_size }}"
max_return: 1
- name: Create LVM VDO volume under volume group 'pool1' with 254 times the size of the physical volume
include_role:
name: linux-system-roles.storage
vars:
storage_pools:
- name: pool1
disks: "{{ unused_disks }}"
volumes:
- name: volume1
compression: true
deduplication: true
vdo_pool_size: "{{ volume_size }}"
size: "{{ too_large_size }}"
fs_create_options: "-K"
mount_point: "{{ mount_location }}"
- include_tasks: verify-role-results.yml
executing log
TASK [debug] ****************************************************************************************************************************************************************************
ok: [localhost] => {
"storage_test_actual_size": {
"bytes": 1979120929996,
"changed": false,
"failed": false,
"lvm": "1t",
"parted": "1TiB",
"size": "1 TiB"
}
}
TASK [debug] ****************************************************************************************************************************************************************************
ok: [localhost] => {
"storage_test_requested_size": {
"bytes": 1932735283200,
"changed": false,
"failed": false,
"lvm": "1t",
"parted": "1TiB",
"size": "1 TiB"
}
}
TASK [assert] ***************************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {
"assertion": "storage_test_actual_size == storage_test_requested_size",
"changed": false,
"evaluated_to": false,
"msg": "Volume volume1 has unexpected size"
}