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Applying for a Snapshot Failed

Publication Date:  2019-08-20 Views:  234 Downloads:  0

Issue Description

A user failed to apply for a snapshot using an EVS disk through the ManageOne operation plane. The user opens the logs collected by the g-ray service and finds that an error code shown in the figure below is displayed for the cinder-volume service (cinder-volume-cascaded service for FusionCloud Type I).

The user clicks the error code. A dialog box is displayed, showing the message "Bad or unexpected response from the storage volume backend API: Activate snapshot error. result: {u'data': {}, u'error': {u'code': 1077949090, u'description': u'The storage pool does not have enough space for storing data.', u'suggestion': u'Expand the storage pool and try again.'}}."

Alarm Information

·       The storage usage exceeds the threshold.

Alarm Name: Data Store Usage Exceeds the Threshold

Alarm ID: 6025

Alarm source: Storage pool for service provisioning

Handling Process

If a user applies for an ECS or EVS disk and the storage space is insufficient, the error in this case occurs. Therefore, the storage pool needs to be expanded.

When a user uses an EVS disk to apply for a snapshot, the snapshot storage space and EVS disk use the same storage pool. If the storage space is insufficient, the snapshot application fails. In this case, you need to expand the storage pool.

Generally, the cinder-scheduler service checks the available space of a storage pool. If storage pool space is insufficient, a message will be displayed, indicating that scheduling the EVS disk fails. However, the error in this case occurs only if the storage pool space is occupied but not synchronized to the cinder-scheduler service.


1.       Contact the administrator to log in to the FusionSphere Cloud Provisioning Service (FusionSphere Cloud Provisioning Service at the cascaded layer in the FusionCloud Type I scenario). Then, choose Configuration > Manage Resource Pool > KVM, as shown in the figure below.

2.       Click the setting button of the storage cluster for the cloud server used by the user. (If there are multiple storage clusters, see Finding the cinder-volume-kvm Service on the Page for Applying for ECSs to search for the target cinder-kvm service, as shown in the figure below.

3.  In the Configure Parameter area, check the management address and name of the storage pool. Log in to the storage pool and expand its capacity. After the capacity expansion, contact the user to apply for a snapshot again


 If the storage space is insufficient, expand the storage capacity or delete useless data.