Mac OS X corrupting file systems issue
Posted on 2005-04-29
Good Day to you support.
I have an issue, and it seems to be a Solid issue, and I cannot get a reply from Apple, Nor willthey
Publish this on there discussions board....
After a drag drop copy across a network i get files that are corrupt, 35 of them to be exact,
from 14430 files ....
I have just network mounted a drive, and drag drop of my Archive folder to the Net disk,
(G5 X Server disk) and 35 mins later done... no errors reported...
However ! Now From telnet session.... as Good practice, I ALWAYS RUN a diff,
that takes another 35 mins, if not a slight bit longer.... and I got 35 files that differ.
As this is a binary diff, I am shocked.....
When I list two of the files,
> ls -l server:/backups/archives/Lily* ./archives/Lily*
-rw-r--r-- 1 chrispar chrispar 69614379 31 Mar 17:46 <>Lily sepia - 556.psd
-rw-r--r-- 1 chrispar chrispar 69614379 12 Apr 18:30 <>Lily sepia - 556.psd
<> is where i removed the path to make it easier to see here.....
they are the same size according to the ls output
Yet they differ from a binary check, and even worse, when I open the files in
Binary files <>Lily sepia - 556.psd <>Lily sepia - 556.psd differ
Photoshop CS, it tells me the file is corrupt, yet some open OK....
Now call me paranoid.... but went back and Did a diff of ALL my archive files, well the ones that are
there, and I get the same BUT with Different files. Sure enough it is a Definate corruption.
However I have only just started this diff after my copy, as I always prior used Retrospect.... and to tape.
Drag and drop is more convienient.... RIGHT..
Command used to determine this..
diff -q -r -y filea fileb
Note: I am so Stressed that this is an Major issue, I have performed a disk
check, (fsck) both the Source disk, and destination disk, I removed the files from the Destination
and re-copied the whole Archive directory again.
diff ..... Guess what, now I have 42 files that differ, and some open in Photoshop and some are reported
as being corrupt. Changed to a different application, iphoto, and it too is worse, it Creates a Huge slowdown
in iPhoto these different files.
This is is what I also did.
Opened photoshop with my Laptop ARCHIVES SHARED, and it sees the files OK, opens OK, and then
I save these on the Server and all OK.
So after all this I am certain, that the corruption arrived at the point of drag and drop Copy across the network
to the Net shared drive.
NOW I tried the same thing in the Office Network, same Issue.... and again I create a copy on a friends G5
desktop, and the same problems with file corruptions, different files but again I see 20 different files and some
times more than 50.
No one at Apple is responding.... I scoured the net for more than 4 days now !!!
One last thing, I cloned the disk, 2 times with different local Firewire disks, sometimes the Clones were different,
and this is probably why Apple on there pages Say format disks first before making a Alternative Boot disk.
This is my Business I am worried about, as Mac is my standardised platform, I am wondering when this first was
introduced... and I have to Keep these files, as they are Archives for My Clients... Clients Are MY Life !!!!
Any abouts, updates, Help.... insights or Pointers.....