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From "Lianping Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-2300) Unexpected deletion of Snapshots backups
Date Wed, 01 May 2013 16:48:15 GMT
Lianping Chen created CLOUDSTACK-2300:
-----------------------------------------

             Summary: Unexpected deletion of Snapshots backups
                 Key: CLOUDSTACK-2300
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-2300
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Management Server
    Affects Versions: 4.0.0
         Environment: CloudStack Manager running on CentOS
Secondary Storage Manager running on CentOS
Hosts running on CentOS
KVM

            Reporter: Lianping Chen


We defined a recurring snapshots backup policy to run daily and only keep the most recent
2 backups. Unexpected deletion of snapshots backups happened randomly/occasionally. The snapshot
backup was created and a record for this snapshot was created in the snapshots table of the
database. The snapshot was also listed in the Web UI. However, the snapshot backup file was
deleted from the file system of secondary storage. 

It seems the following happened that causes the unexpected deletion:

CloudStack Manager sent out the CleanupSnapshotBackupCommand, with validBackupUUIDs containing
the two snapshots to keep. 

Right after this CleanupSnapshotBackupCommand was sent out; a new snapshot backup is created.

Secondary Storage VM Agent received this CleanupSnapshotBackupCommand and executed the deletion.
Because the newly created snapshot backup was not in the validBackupUUIDs, the backup file
was deleted.


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