Deleted Files

Bob Sneidar bobs at twft.com
Wed Jun 2 12:47:31 CDT 2010


After reading a bit more of your original post, I think I understand that you are creating an XML file each time you do a PUT? If so, are you "PUTTING" to the same file name each time? If so, then if the command fails for some reason the file system would delete the original, and then the new file, having failed would never get to the server. It might be better to rename the original, "PUT" the new XML file, verify the existence of the file after "PUTTING" it, then delete the old one. 

I'm curious why you are using this command and not the low level file commands:
open file
read from file
write to file
close file

Bear in mind I'm not an expert on low level file commands. I am simply curious about your method. 

Bob


On Jun 2, 2010, at 10:32 AM, Dan Friedman wrote:

> Bob,
> 
> Thank you VERY much for the insight.  I really need some help resolving this problem.  However....
> 
>> Volume Corruption
> 
> On one file only?  I suppose that possible, but I think it's pretty unlikely.
> 
>> File was not saved where you thought it was saved. 
> 
> Then why would the original file have been deleted?
> 
>> User or app appears to have saved the file but in reality, didn't. 
> 
> Again, why would the original file have been deleted?
> 
> 
> -Dan 
> 
> 
> 
> 
> 
> On Jun 2, 2010, at 10:00 AM, use-revolution-request at lists.runrev.com wrote:
> 
>> Too little information. I can think of at least one way: Volume Corruption. I can think of another way: File was not saved where you thought it was saved. Yet another way: User or app appears to have saved the file but in reality, didn't. 
>> 
>> Bob
>> 
>> 
>> On Jun 2, 2010, at 9:02 AM, Dan Friedman wrote:
>> 
>>> Hey...
>>> 
>>> I am writing compressed XML data to file on a server using the put command.  Every now and then, I get a report from a user that when they go to read the data, they are getting an error.  When I look on the server, the file is gone!  Not empty, not zero K... just gone - nonexistent!
>>> 
>>> Let's assume for a moment that the file was there to begin with, and there is no one messing with the data and secretly deleting things.  It must be something in my app that is causing this.  But, what could it be?  Nowhere am I deleting a file.
>>> 
>>> Can anyone think of a way you could delete a file without actually deleting it?
>>> 
>>> I tried:
>>> 
>>> 	put compress("") into url x
>>> 
>>> I thought that compressing "empty" might do something funny.  But it didn't, it just wrote some gargly-goop.
>>> 
>>> 
>>> ANY thoughts out there??
>>> 
>>> Thank you in advance,
>>> Dan
> 
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