I like "inotify". I've become somewhat familiar with the interface and I believe this will allow you to do what you want. There are plenty "C" examples out there. Cheers, -----Original Message----- From: Adam Lee Sent: Thursday, August 11, 2011 12:17 PM To: kernelnewbies@xxxxxxxxxxxxxxxxx Subject: Re: Tracing file size changes On Wed, Aug 10, 2011 at 07:06:29PM -0400, Chris wrote: > I'm trying to think of a good way to figure out where space is going on > somewhat large and busy filesystems. Often I will be notified by nagios > that I > am running out of space somewhere, and it will even tell me what the trend > in > usage is. So now I know that I lost a bunch of space recently. > > There are several things I can do at that point: > - Check quota usage. If quotas are working correctly, this can sometimes > help when one user is obviously using a ton of space. More often than > not, > there is nothing obvious, quotas aren't working or the space is used by > system > accounts that provide no help in knowing where the space went. > - Use du. This is just plain painful and time consuming. Doing this > usually > causes too much load. > > Without knowing other ways to find information, I was thinking it would be > really nice to have a way to see which files or directories grew or shrank > since some point in the past. Would it be possible to get the kernel to > tell > me when files were opened for writing and closed so I could record the > size > difference? I know there are various file notify mechanisms, but from > what I > can see, they don't handle millions of files very well. > > Of course I'm open to other ideas, but this was my curiosity. > Will Inotify help? http://en.wikipedia.org/wiki/Inotify http://www.kernel.org/doc/man-pages/online/pages/man7/inotify.7.html -- Regards, Adam Lee -------------------------------------------------- E-mail: adam8157@xxxxxxxxx Website: http://www.adam8157.info -------------------------------------------------- _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
