[daisy] [JIRA] Created: (DSY-664) lost data with unsuccessful backup?

[Wolfram Mayer (JIRA)]

lost data with unsuccessful backup?
-----------------------------------

         Key: DSY-664
         URL: http://issues.cocoondev.org//browse/DSY-664
     Project: Daisy
        Type: Task
  Components: Backup  
    Versions: 2.1    
 Environment: Windows 2003 R2
 Reporter: Wolfram Mayer
    Priority: Minor


Hi,

we had an incident when a backup failed and created empty directories as daisy-blobstore.zip-tmp.
At that day documents had been changed and saved (nothing obvious was remarked by users that documents had not been saved).
3 weeks later it had been discovered that changes were been lost. Scanning all daily backups from it can be seen that the changes were always in the blobstore. Nevertheless these changes can't be seen via the recent changes, versions or recent changes this was visible neither LIVE nor STAGING.

Backups after that day were successful. How could this happen and how could this be resolved?

Is it possible that un unsuccesful backup leads to a backup lock. With backup lock no document changes are possible which is not recognized?
Could this explanation be possible? And if yes how could that be resolved?   

Kind Regards,
     Wolfram

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