On Jun 20, 2011, at 6:33 PM, Mark J. Bailey wrote: > Bruce, if you have the 'lsof' (list of open files) util on that system, > you might be able to do some analysis from that perspective that might > help narrow it down. Also, if it is lots of small files, what is the > default block size (and/or minimum allocation) for a file.
I think it is 4k. > What filesystem? ext3 > Could the overhead for the filesystem structure with LOTS of > files be eating up space in the filesystem/inode datastructure? I don't think so. > Wild > guess, but overhead for such a largely allocated filesystem might account > for some dark matter. There was about 500GB available on Friday with the only directory (3T) that is seeing any significant activity was using 1.5TB. Today the partition is 100% full but the 3T directory is now only using 1.1TB with all other directories unchanged since Friday. I don't know what the users have been doing over the weekend. Bruce > > -----Original Message----- > From: nlug-talk@googlegroups.com [mailto:nlug-talk@googlegroups.com] On > Behalf Of Bruce W. Martin > Sent: Monday, June 20, 2011 6:25 PM > To: nlug-talk@googlegroups.com > Subject: Re: [nlug] df says partition is full but du numbers don't add up > > > On Jun 20, 2011, at 4:00 PM, Mark J. Bailey wrote: > >> IS there some sort of reserve/overhead with the array or the filesystem > on it? > > No. > >> Is it being replicated somewhere? > > NO. > >> And, do you have a whole lot of small files or a lesser number of huge > files? > > It is mostly small files. > > Paul, Thanks for that thought but there are plenty of inodes available on > that partition. I deleted a large number of files last week but the space > showed free right afterwards. I ran lsof but nothing on that partition > showed up in the list. > > Brian, I have a sneaking suspicion that you may be correct about the > running or zombie processes, I will have to look into that further. > This partition is served up to about a dozen machines so I suspect that i > will have to look at processes on each of the other machines to find if > there is a culprit down this path. > > Thanks for the suggestions. Any other thoughts? > > Bruce > > >> >> From: nlug-talk@googlegroups.com [mailto:nlug-talk@googlegroups.com] >> On Behalf Of Brian H. Ward >> Sent: Monday, June 20, 2011 3:46 PM >> To: nlug-talk@googlegroups.com >> Subject: Re: [nlug] df says partition is full but du numbers don't add >> up >> >> unlinked (deleted) files which are still held open by running (or even > zombie) processes will keep disk space from being returned to df, but > won't show up in du. >> >> On Mon, Jun 20, 2011 at 4:34 PM, Bruce W. Martin <marti...@gmail.com> > wrote: >> I have a 4.6TB partition on a RAID array that is reporting as 100% full > but running du on the partition only shows 3.5TB worth of files. What > gives? Is there some way to fix this short of rebooting? I am not sure of > the right question to pose to do a proper google search for this. >> >> >> Bruce >> -- >> Bruce W. Martin, KQ4TV >> Trustee for NT4UX >> Nashville Linux User Group - Amateur Radio- Special Interest Group >> NLUG-AR-SIG >> >> >> -- >> Our visit to this planet is short, so we should use our time >> meaningfully, which we can do by helping others wherever possible. And >> if we cannot help others, at least we should try not to create pain >> and suffering for them. - Dalai Lama -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to nlug-talk@googlegroups.com To unsubscribe from this group, send email to nlug-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en
