Jeremiah
Mar 17, 2012 @ 12:04 am

I did a complete backup of a hard drive (1.15 TB) and saved it as an image because my Mac keeps telling me it can't repair the original drive to try backing everything up and reformatting it. This is an external drive. It took 16 hours to create the image. Now that I have reformatted the original drive, I can't get CCC to restore the image. It goes so far and hangs. The drive read/write drops to zero and it does nothing. Is there anyway to figure out what is causing this?

1 Posted by Mike Bombich on Mar 17, 2012 @ 8:59 pm

It sounds like you're trying to restore back to the same disk, and that that disk is probably physically failing. If the disk was struggling before and it's still struggling now, I suspect you just need to replace it.

For the sake of thoroughness, I offer some troubleshooting tips for diagnosing these kinds of problems here:

Troubleshooting hardware problems [LINK NO LONGER EXISTS]

Mike

2 Posted by Jeremiah Griffiths on Mar 18, 2012 @ 12:36 am

I have purchased another external hard drive. However, I am assuming there is an issue with my backup image, as no matter how many drives I try to restore this imagine onto, it ends up hanging. So far I have been able to get some of my backup restore little by little. If I let it go until it hangs, then abort, it allows me to try again and if I tell it not to erase and only replace newer or changed files it seems to keep building onto it. Very frustrating and slow, but it appears to be working. Is there an option to verify images you create with CCC? I could wish that it had automatically verified the imagine when it created it, however, I suppose it is my fault for assuming the imagine was fine before erasing the original copy of the data. I do have a complete online backup with Crashplan, it tells me it would take an estimated 56 days to restore my data, or I can have them send me an external drive with my data on it for a fee. Either way would get my data back and I can't really put a price on it. I will see what turns out with the method I am using.

On Mar 17, 2012, at 9:00 PM, Mike Bombich wrote:

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3 Posted by Mike Bombich on Mar 18, 2012 @ 12:42 am

Hi Jeremiah:

I'd really like to take a look at your log to see what CCC is doing. Can you submit your logs to me for review? The easiest way to do this is from within CCC:

  1. Choose "Report a problem" from the Help menu
  2. Click on the "Submit Logs" tab and review the information presented
  3. Click on the "Submit Logs" button
  4. Update this discussion to let us know that you've submitted your logs, and please note the submission ID at the bottom of the Submit Logs tab.

Thanks,
Mike

4 Posted by Jeremiah Griffiths on Mar 18, 2012 @ 12:46 am

I have submitted the logs: CCC Report ID: 8983

On Mar 18, 2012, at 12:40 AM, Mike Bombich wrote:

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5 Posted by Mike Bombich on Mar 18, 2012 @ 8:29 pm

I don't think there's anything wrong with the disk image. I think there could be something flaky about the source disk (that the disk image resides upon), but I don't see anything wrong with the disk image itself.

There is a chance that the problems lie on another disk. The hang reports indicate that CCC was hanging in a couple different places -- when trying to update the list of items to be copied, when trying to add a newly-mounted volume to the source or destination menu. In all hangs, the hang was ultimately caused by some volume on the system not responding. Unfortunately, the hang logs never indicate what file was causing the hang, only what part of my code the hang was occurring in, so I don't know which volume caused the hang. We can easily rule out every volume except for the source, destination, and startup disk, though, by simply detaching all volumes from your Mac for the duration of the restore. While CCC is running, don't mount any new volumes.

I'm hopeful that the source volume is not the culprit because you had been getting fairly decent performance in a previous (partial?) restore:

03/17 21:08:43 Copying selected files: Time elapsed: 00:50:42. Data copied: 72.81 GB

Hopefully keeping other volumes at bay will allow CCC to complete the task.

Mike

6 Posted by Jeremiah Griffiths on Mar 18, 2012 @ 10:14 pm

I am at a loss as to what is causing this. The original source disc that I created the image from is a 3 TB Seagate GoFlex Drive. I started getting notices from OSX saying that the drive could not be mounted and to try running a repair on the drive. It says it cannot repair and to backup everything ASAP and try reformatting to fix the issue. I purchased a new 3 TB Seagate GoFlex Drive and made an image of the original and saved it on the new drive. As you know, something keeps causing the restore to hang. I was able to get a complete restore by using the method I mentioned above. I know the issue is not caused by CCC. I have tried another backup program and it too hangs. I cannot detach any volumes during the restore as the source and destination are both external, and I of course cannot detach the startup disc. I can always resolve the hang by detaching one of the two external drives, so the issue has to be with one of those I would think. I would surely hope the issue would not be with the brand new drive?!

On Mar 18, 2012, at 8:27 PM, Mike Bombich wrote:

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7 Posted by Mike Bombich on Mar 19, 2012 @ 8:58 am
I would surely hope the issue would not be with the brand new drive?!

I would hope as well, but wouldn't discount it at all. Brand new hard drives can have enough failures to be flaky, and I have seen first hand an enclosure that functioned on only one interface (USB -- the Firewire interface was slow and the volume would spontaneously unmount in the middle of a copy). When you have the opportunity, I offer some tips for isolating these kinds of problems here in the documentation:

Troubleshooting hardware problems [LINK NO LONGER EXISTS]

Mike

8 Posted by Jeremiah Griffiths on Mar 21, 2012 @ 10:52 pm

I seemed to have solved the problem with the hard drives freezing up. Apparently installing Seagates Diagnostic tool/Utility causes the drive to hang for whatever reason. I have been experiencing hangs even while not using CCC and did some investigating. After a certain period the drive hangs and you have to unplug it to make the computer respond again. I uninstalled the seagate software and have not had a problem since. Just a little FYI to others who may be experiencing the same problem.