Disk full / NFS, df, and du
Eric Anderson
anderson at centtech.com
Mon May 17 06:56:40 PDT 2004
Jerry McAllister wrote:
>>Nelis Lamprecht wrote:
>>
>>
>>
>>>On Mon, 2004-05-17 at 05:04, Eric Anderson wrote:
>>>
>>>
>>>
>>>
>>>
>>>>The problem I'm having is, after they do the rm's, it doesn't free the
>>>>disk space. df shows it still being used, but du claims their
>>>>directories are empty.
>>>>
>>>>
>>>>
>>>>
>>>Please see
>>>
>>>http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/disks.html#DU-VS-DF
>>>
>>>..regarding this. Maybe a kill -HUP nfsd might help ?
>>>
>>>
>>>
>>>
>>Actually, no. In fact, I just did a quick test, with a 500mb file, and
>>as root, I deleted the 500mb, and my df doesn't report the newly freed
>>space - I did this locally, with no NFS in the mix.. I have softupdates
>>turned on, and quotas turned on (although I just recently turned on the
>>quotas after having this problem, so that isn't causing problems)..
>>
>>
>
>How long after the rm did you do the df? I have noticed that there
>is a time delay before df reports the updated disk statistics - in the
>range of a minute or two. I think I read about it in a FAQ somewhere,
>so, maybe the reference someone else posted will shed some light.
>
>
This particular time I waited a few minutes, but I have waited 1.5 days
for the other data to disappear. I end up rebooting the server, which
ends up fsck'ing the disk with lots of unreferenced inodes or some such
thing.. I get my space back, but a reboot is needed.. not good.
Eric
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Eric Anderson Sr. Systems Administrator Centaur Technology
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