Thread-topic: Looks like directory issues-bad ones
User-agent: Microsoft-Entourage/12.0.0.071130
On 3/6/08 6:34 AM, "Mike Visconti" <email@hidden> wrote:
> Got called in to look at a server that had disappearing files (users click on
> files or folders and they disappear).
>
> 4TB share on an Xserve RAID under 10.4.10 (with a bad install-won't update to
> 10.4.11) with 500GB free on the volume. Disk Utility cannot repair the volume
> (have not taken a pass with DiskWarrior yet, but will after getting off as
> much as possible).
>
> I wanted to start by duping the data that was there elsewhere. However I get
> errors when trying to ditto:
>
> ditto: /Volumes/drive/folder/./folder2/filename: Input/output error
>
> Notice the /./ in the middle- the normal path would be
> /Volumes/drive/folder/folder2/filename but for some reason this is showing up.
> Of course, this is showing up in the folders that have had the disappearing
> files and folders.
>
> Any ideas as to what is going on, or how to work around this? For now I am
> just using ditto in small chunks, and keeping track of what is failed for
> later attempts at recovery (first with DiskWarrior, and then -if desired- with
> DataRescue). There is only a snapshot of the data from about three months ago.
> Not a lot to fall back on.
DiskWarrior is NOT a data recovery tool. It will make changes to directories
that cause files to disappear. It will certainly warn you if it thinks this
might happen, but it does not always know.
Never ever run DiskWarrior on a drive where you cannot afford to lose data.
Use something like Data Rescue first. In fact, once you know you have
directory damage, it's a good idea to unmount the volume and only let tools
like Data Rescue have a crack at it. It's critical to not have any further
writes to the damaged directory.
As you've found, ditto and other normal tools cannot cope with I/O errors.
Matt
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