[EP-tech] High Disk Utilisation in /tmp in EPrints 3.3.10

Tian, Jia J.Tian at kingston.ac.uk
Thu Apr 18 11:36:21 BST 2013


Dear all,

I have a question about the temporary file writing in EPrints.

Recently our EPrints server (SuSE linux runs EPrints 3.3.10) gets very high disk utilisation in the partition "/tmp". By checking this partition, I found there are several temporary folders created and written by the "eprints" user. The files in that temporary folder look like:

-rw-rw-r-- 1 eprints eprints  78450 2013-03-08 10:56 ShowJacket.asp?ISBN=9780333374320&width=155&height=205
-rw-rw-r-- 1 eprints eprints 108395 2013-03-08 10:56 FlyerOptions.aspx?PID=253412&ISBN13=9780333402603
-rw-rw-r-- 1 eprints eprints  41389 2013-03-08 10:56 TitlePrint.aspx?PID=253412
-rw-rw-r-- 1 eprints eprints  11220 2013-03-08 10:56 ShowJacket.asp?ISBN=9780333374320&width=50&height=80
-rw-rw-r-- 1 eprints eprints  71152 2013-03-08 10:56 ShowJacket.asp?ISBN=9780333402603&width=155&height=205
-rw-rw-r-- 1 eprints eprints   3748 2013-03-08 10:56 ShowJacket.asp?ISBN=9780333442517&width=50&height=80
-rw-rw-r-- 1 eprints eprints  10696 2013-03-08 10:56 ShowJacket.asp?ISBN=9780333402603&width=50&height=80
-rw-rw-r-- 1 eprints eprints 409458 2013-03-08 10:56 SearchResults.aspx?s=384635&fid=163762
-rw-rw-r-- 1 eprints eprints  11212 2013-03-08 10:56 ShowJacket.asp?ISBN=9781403940544&width=60&height=96

At the beginning, I thought it might be an attack, however after very heavy security scanning we found there are no obvious vulnerabilities. Also I found later some of those files disappeared while some folders still remain in /tmp, which consumes a lot of disk space (approx. 1Gb to 2Gb).

After reading some messages in the archived tech group emails, I highly doubt whether those files are temporary files written by EPrints system when doing indexing or other backend jobs. We have been running EPrints software for many years and this issue is recently new after we upgraded to version 3.3.10. I wonder whether there might be a bug in the 3.3.10 version which fails to remove those temporary files after backend jobs complete.

Is there someone having a similar problem? Or could someone please kindly give some advice? Thank you so much!

Best Wishes,
Jia


Jia Tian
Systems Analyst, Infrastructure, Information Services

T   Internal: 62079
T   020 8417 2079

Kingston University London
Penrhyn Road, Kingston upon Thames KT1 2EE
www.kingston.ac.uk<http://www.kingston.ac.uk>

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