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A possible fix for 'overlapped extent allocation' errors
Authored by: kioneo on Mar 04, '03 10:15:15AM

This has happened to me before as well.

Just use:

find / -inum xxxx

This will find the file with the inode number xxxx by searching your entire drive starting at the root. Just make sure you run it as root otherwise you will get permissions errors as it traverses directories.

Once you find the file, decide if it is safe to delete and do so. Then fsck again, and you should be fine.

---
If you can't be promiscuous, what's the point [of sniffing]?



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A possible fix for 'overlapped extent allocation' errors
Authored by: Carbonide on Mar 05, '03 03:49:31AM

Thanks, great hint! I'm currently trying to figure out what files are corrupt and delete them using the terminal. But as there are a few hundredof them this will take forever.

Shouldn't it be possible to write a shell script that goes through a text file with the node numbers, retrieves the file name and moves it to a certain directory?

Any shell guru out there?



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A possible fix for 'overlapped extent allocation' errors
Authored by: sbwoodside on Mar 05, '03 01:01:47PM

Don't do that. Before you move/remove any random system files you should know what they do and whether or not removing them will hose your system.

simon



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A possible fix for 'overlapped extent allocation' errors
Authored by: Carbonide on Mar 06, '03 04:34:01AM

How about only moving files that reside in the Applications folder? This would probably get rid of most of the errors as System files are the first installed on a disc and tend not to change that often than those the user installs, so they aren't as susceptible to become implicated in extents overlap, are they?



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A possible fix for 'overlapped extent allocation' errors
Authored by: dashard on Apr 04, '03 09:27:17PM

How about a shell script to list the 'inum' followed by the path to what was found and put it in a text file at ~/Desktop. This way one could see what was what and then determine the best course of action without having to slog through the error numbers one at a time??

Anyone??



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A possible fix for 'overlapped extent allocation' errors
Authored by: webmonster on Dec 10, '03 07:00:58PM
This is UNTESTED, so USE AT YOUR OWN RISK (in other words, it may require minor tweaking, but it's at least some starting point - it is not elegant at all)

for num in `fsck -n / 2>&1 | grep "Overlapped extent allocation" | cut -d'(' -f2 | cut -d' ' -f2 | cut -d'd' -f1 ` ; do find / -inum $num ; done > /OverlappedExtentAllocations.txt

This should produce a file in your boot volume's root directory.

I had the overlapped extent problem right now, but I cured it quick because I moved several files to a different disk before running fsck, so I didn't really try the script above.

Maybe it helps.

Regards, /k

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A possible fix for 'overlapped extent allocation' errors
Authored by: johnsawyercjs on Dec 11, '03 02:25:43AM

Diskwarrior will list overlapped files by name, as long as it doesn't choke on the diagnosis phase. Use version 3, it's much faster than version 2, and boot from the Diskwarrior 3 CD, since DW 3 doesn't work yet under OS 10.3.x.



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A possible fix for 'overlapped extent allocation' errors
Authored by: ivarv on Nov 15, '03 11:32:39AM

Thanks for the tip. I had one of those and wanted to fix it before the Panther. I logged in as root and ran the command, at first it gave me something with trailing error caracter, but I tried again and suddenly it gave me the file. It was an iDVD file. I just started to use iDVD last month and only tried a lttle bit. Deleted my test project and verified the disk. I was clean. Thanks for the tip.



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A possible fix for 'overlapped extent allocation' errors
Authored by: jceaser on May 01, '05 04:22:44PM

Great tip, saved me from reformating my drive. Wish this site had mod points.



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