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Re: opening file for reading updates modification time!
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Re: opening file for reading updates modification time!


  • Subject: Re: opening file for reading updates modification time!
  • From: Alan Snyder <email@hidden>
  • Date: Thu, 06 Feb 2014 12:49:30 -0800

Those Java threads are my test program.

  Alan



On Feb 6, 2014, at 11:31 AM, Thomas Tempelmann <email@hidden> wrote:

Those “java.” processes are odd.
IIRC, backup programs back in the 90s would use a file’s mod date to tell when the file was last backed up, and would update the mod date if they archived it again.

Do you have some backup program running, perhaps Crashplan (which is written in Java)? Though I doubt that it’d use that old technique.

Another guess is that the “last opened” attribute on the read file(s) gets updated and stored, thereby causing writes to the volume.

Then there’s also Spotlight. It might cause some side effects, too (just a blind guess). You might try setting your volumes to be excluded by Spotlight to see if that changes behavior.

On Thu, Feb 6, 2014 at 8:11 PM, Alan Snyder <email@hidden> wrote:
What I am seeing is a lot of mysterious activity on one of the files.


--
Thomas Tempelmann, http://www.tempel.org/
Follow me on Twitter: http://twitter.com/#!/tempelorg
Read my programming blog: http://blog.tempel.org/

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References: 
 >opening file for reading updates modification time! (From: Alan Snyder <email@hidden>)
 >Re: opening file for reading updates modification time! (From: Mark Day <email@hidden>)
 >Re: opening file for reading updates modification time! (From: Jim Luther <email@hidden>)
 >Re: opening file for reading updates modification time! (From: Alan Snyder <email@hidden>)
 >Re: opening file for reading updates modification time! (From: Thomas Tempelmann <email@hidden>)

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