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HT3275: Time Machine: Troubleshooting backup issues

Learn about Time Machine: Troubleshooting backup issues

HT3275 Time machine is running but Not backing up any files.

371 Views 5 Replies Latest reply: Feb 28, 2012 8:36 PM by Linc Davis RSS
Greg Platti Calculating status...
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Feb 28, 2012 3:34 PM

It goes off every hour and has been very reliable, but I just needed to use it and it shows that it has not recorded a new file since 12/11/11.

 

Any ideas why its not recording new or any edits to files?

iMac, Mac OS X (10.6.8)
  • Linc Davis Level 10 Level 10 (107,530 points)

    Launch the Console application by entering the first few letters of its name into a Spotlight search. If that doesn’t work, then in the Finder, press the key combination shift-command-U. The application is in the folder that opens.

     

    Select "system.log" from the file list. Enter "backupd" (without the quotes) in the Filter text field. Post the messages from the last backup, beginning with "Starting standard backup." Post the log text, please, not a screenshot. Edit out excessive repeats, if any. Some personal information, such as the names of your files, may be included – edit that out, too, but don’t remove the context.

  • Linc Davis Level 10 Level 10 (107,530 points)

    Post the messages from the last backup, beginning with "Starting standard backup."

  • Linc Davis Level 10 Level 10 (107,530 points)

    Time Machine uses the modification times of folders to determine whether their contents need to be scanned for changes made since the time of the last snapshot. For some reason, that criterion occasionally fails, and TM doesn’t scan folders with contents that have changed. You may be able to get backups to resume by updating the modification times of all your folders.

     

    Important: This procedure will change the modification times of all folders on the startup volume. It won’t affect anything that’s not a folder, and it won’t change your existing backups at all. If you have a reason to want to keep the modification times of folders as they are, STOP.

     

    Before proceeding, you must have a current backup of all data. Since your existing Time Machine backups may not be current, you’ll have to back up in some other way; for example, by starting a new TM backup set on another external drive. It’s a good idea to do this anyway, as you need more than one backup.

     

    Launch the Terminal application by entering the first few letters of its name into a Spotlight search. If that doesn’t work, then in the Finder, press the key combination shift-command-U. The application is in the folder that opens.

     

    Drag or copy – do not type – the following line into the Terminal window, then press return:

     

    sudo find / -xdev -type d -exec touch {} \;

     

    You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up.

     

    The command may take several minutes to run. When a line ending in a dollar sign ($) appears below what you entered, quit Terminal.

     

    The next snapshot will take longer than usual, because all folders on the boot volume will be scanned for changes. When it’s complete, check the results to see how much data has been backed up.

     

    This procedure will only affect the backups of your startup volume. If you back up other source volumes with Time Machine and are having the same problem with those, you’ll need to take additional steps.

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