|Feb 7, 2010, 04:06 PM||#1|
Time Machine Backup Corrupted. How to Repair?
Anyone know what to do about a bad catalog b-tree in a sparsebundle? My hard drive crashed. I turned to Time Machine to restore it. I found its sparsebundle was corrupted, too.
Here is what I have tried:
Repairing from Disk Utility:
No luck. "Disk Utility can't repair this disk. Back up as many of your files as possible . . ."
Feb 7 10:00:01 tmps-MacBook-Pro diskarbitrationd12: unable to repair /dev/disk3s2 (status code 0x00000008).
Feb 7 10:00:02 tmps-MacBook-Pro diskmanagementd3115: APICALLBACK_dmAsyncFinishedForDisk_FSCK_result dmErr=-9957 detailErr=8
Repairing from Disk Warrior:
Again, no luck: The directory of the disk "Time Machine Backups" cannot be rebuilt. This disk is not eligible. Only Mac OS disks that are locally attached are eligible.
2/7/10 10:06:38 AM DiskWarrior App: Error resolving disk with VM pages. (-43)
2/7/10 10:08:48 AM hdiutil: detach: timeout for DiskArbitration expired
2/7/10 10:08:48 AM hdiutil: detach: drive not detached
2/7/10 10:08:48 AM DiskWarriorRebuildServer: Error 1 executing '/usr/bin/hdiutil'
2/7/10 10:08:48 AM DiskWarrior App: hdiutil detach returned 2
2/7/10 10:08:59 AM DiskWarrior App: Error resolving disk with VM pages. (-43)
Lastly, I tried the method on this web page (even though the problem they described wasn't mine):
It involves attaching the sparsebundle drive without mounting it and running fsck against it.
Still no luck.
Executing fsck_hfs (version diskdev_cmds-491~1).
Checking Journaled HFS Plus volume.
Detected a case-sensitive volume.
Checking extents overflow file.
Checking catalog file.
Rebuilding catalog B-tree.
Invalid node structure
Invalid record count
The volume Time Machine Backups could not be repaired.
The b-tree looks bad and I have no idea what do do about it now.
|Dec 30, 2014, 02:49 AM||#2|
Sparse bundle disk images, HFS Plus repairs, Time Machine, restoration, reliability
Also with reference to that 2008 post, in Ask Different:
How can I avoid repeated “Time Machine must create a new backup” errors when backing up to a third party NAS?
From Suitability of HFS Plus (my answer):
Degrees of failure
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