Clear CrashPlan cache
Sometimes this cache becomes outdated or it gets modified or deleted by another process on your computer or becomes corrupted when your computer stops unexpectedly by a software crash or power failure.
Review this troubleshooting article if you are experiencing any of the following:
- CrashPlan reports there are no files to restore, or some files appear to be missing from the Restore tab
- CrashPlan is unable to connect to destinations
- CrashPlan is reporting incorrect information about your backup status or reports that it is backing up your entire computer all over again
In these instances, we advise you to clear your cache in order to resolve the issue.
Recommended solution
Clearing the cache is a quick procedure you can use to troubleshoot issues in CrashPlan. Clearing the cache does not impact the data stored in your backups or change your settings.
To address issues with an online destination, you can issue a command specific to the destination. Alternatively, you can manually clear your cache. Manually clearing the cache can address issues with online destinations, as well as local and backups to your other computers.
Considerations
Upon issuing the command, CrashPlan immediately erases its cache files on your computer and starts synchronizing your file selection to your backup destinations. While it may look like the backup process is starting over, CrashPlan is rebuilding your cache. No new backups and restores can be made untill this process is finished. The duration of the cache rebuilt process will range from a few minutes to many hours – mostly depending on the size of your file selection and the available I/O bandwidth. Please allow CrashPlan time to complete this process. To speed up rebuilding you might want to clear only broken destination folders selectively.
CrashPlan PROe
- Open the CrashPlan application
- Double-click the CrashPlan logo in the upper right
The CrashPlan command-line area opens - Enter the command that corresponds to your location:
backup.replace <destinationGUID> - Press Enter ↵
How do cache files help my backup?
Caching in CrashPlan is all about speed. Caching in one condensed location allows the CrashPlan application to quickly access information about your files in order to speed up the process of your backup, quickly build lists of files available for restore, and track all of the changes to each file in your backup selection. The cache files are also used to quickly compare the data on your system with the information stored at the destination during a file verification scan, which runs in order to ensure the health of your backup.
How to manually clear the cache?
- Stop the CrashPlan engine
- Navigate to the cache directory for your operating system
win: c:\ProgramData\CrashPlan\cache
win: C:\Program Files (x86)\CrashPlan\cache
win: C:\Documents and Settings\All Users\Application Data\CrashPlan\cache
linux: /usr/local/crashplan/cache
mac: /Library/Caches/CrashPlan # Open the Finder, press Command+Shift+G - Delete all files and folders found within this folder
If you are only having trouble with one specific destination, delete the folder with the corresponding destination GUID.
- Empty your computer's trash
- Restart the CrashPlan engine
Example commands
The commands below might serve as an example to adapt to your needs for manually clearing the cache files.
Windows
Use these (DOS) command prompt commands to delete the cache files for all destinations:
> net stop CrashPlanService
> rd "%ProgramFiles%\CrashPlan\cache" /S /Q # CrashPlan version 2010
> rd "%AllUsersProfile%\Application Data\CrashPlan\cache" /S /Q # CrashPlan version 3.x
> net start CrashPlanService
Mac OS X
Verwenden Terminal.app und diesen Befehl, um die Cache-Dateien für alle Ziele zu löschen:
$ sudo launchctl stop com.crashplan.engine;sudo launchctl unload /Library/LaunchDaemons/com.crashplan.engine.plist;sudo rm -r /Library/Caches/CrashPlan/*;sudo launchctl load /Library/LaunchDaemons/com.crashplan.engine.plist;sudo launchctl start com.crashplan.engine
Linux
If CrashPlan is installed in the default location, you can run this command from a user account:
$ sudo /usr/local/crashplan/bin/CrashPlanEngine stop;sudo rm -rv /usr/local/crashplan/cache/*;sudo /usr/local/crashplan/bin/CrashPlanEngine start
With the default CrashPlan installation location you can use this command as root:
# /usr/local/crashplan/bin/CrashPlanEngine stop;rm -rv /usr/local/crashplan/cache/*;/usr/local/crashplan/bin/CrashPlanEngine start
Nächste Schritte
Wenn das Löschen des Cache das Problem nicht löst, versuchen Sie bitte die CrashPlan Deinstallation und Neuinstallation.