Comment 7 for bug 1940466

Hi Bence,

NOTE: This is more of a glance issue than cinder as the changes made are part of glance cinder store.

I did the same image save operation 10 times concurrently and was able to save all 10 images successfully.

stack@devstack-VirtualBox:~/devstack$ glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file one.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file two.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file three.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file four.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file five.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file six.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file seven.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file eight.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file nine.qcow2; glance image-download 18dc5568-1a47-44ff-a724-5ef8d44d9e08 --file ten.qcow2;

stack@devstack-VirtualBox:~/devstack$ ll *.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:20 eight.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:19 five.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:19 four.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:21 nine.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:17 one.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:20 seven.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:19 six.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:21 ten.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:18 three.qcow2
-rw-rw-r-- 1 stack stack 16300544 Apr 18 14:18 two.qcow2

Glance image:

stack@devstack-VirtualBox:~/devstack$ glance image-show 18dc5568-1a47-44ff-a724-5ef8d44d9e08
+------------------+----------------------------------------------------------------------------------+
| Property | Value |
+------------------+----------------------------------------------------------------------------------+
| checksum | b874c39491a2377b8490f5f1e89761a4 |
| container_format | bare |
| created_at | 2022-04-18T08:14:24Z |
| direct_url | cinder://lvmdriver-1/8851784d-5bef-4379-8c37-dd178fff8e37 |
| disk_format | qcow2 |
| id | 18dc5568-1a47-44ff-a724-5ef8d44d9e08 |
| locations | [{"url": "cinder://lvmdriver-1/8851784d-5bef-4379-8c37-dd178fff8e37", |
| | "metadata": {"store": "lvmdriver-1"}}] |
| min_disk | 0 |
| min_ram | 0 |
| name | test-2-multiattach-lvm |
| os_hash_algo | sha512 |
| os_hash_value | 6b813aa46bb90b4da216a4d19376593fa3f4fc7e617f03a92b7fe11e9a3981cbe8f0959dbebe3622 |
| | 5e5f53dc4492341a4863cac4ed1ee0909f3fc78ef9c3e869 |
| os_hidden | False |
| owner | e01f8d1cdb6f4e0a85fa76286928060c |
| protected | False |
| size | 16300544 |
| status | active |
| stores | lvmdriver-1 |
| tags | [] |
| updated_at | 2022-04-18T08:14:45Z |
| virtual_size | 117440512 |
| visibility | shared |
+------------------+----------------------------------------------------------------------------------+

Image-volume

stack@devstack-VirtualBox:~/devstack$ cinder list --all
+--------------------------------------+----------------------------------+-----------+--------------------------------------------+------+-----------------+----------+-------------+
| ID | Tenant ID | Status | Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+----------------------------------+-----------+--------------------------------------------+------+-----------------+----------+-------------+
| 515654c6-e42a-4ae1-9c40-41f24fa6b567 | 860424c7e36b4129bb55ab6a5e1ec76e | available | image-0407bb90-968c-4341-be65-6c4673dcca5e | 1 | lvm-multiattach | false | |
| 8851784d-5bef-4379-8c37-dd178fff8e37 | 860424c7e36b4129bb55ab6a5e1ec76e | available | image-18dc5568-1a47-44ff-a724-5ef8d44d9e08 | 1 | lvm-multiattach | false | | -- image-volume containing the image
| bffdffff-6943-483c-8315-3c8b9fe1e407 | 860424c7e36b4129bb55ab6a5e1ec76e | available | image-6a2ea172-630b-4877-8a5f-f310aecf3060 | 1 | lvmdriver-1 | false | |
+--------------------------------------+----------------------------------+-----------+--------------------------------------------+------+-----------------+----------+-------------+