Red Hat Bugzilla – Bug 8987
tmpwatch deletes file while in use
Last modified: 2008-05-01 11:37:54 EDT
tmpwatch deleted an iso image in /tmp
WHILE it was mounted at /mnt/cdrom via
Change the tmpwatch policy (probably by disabling) if you're going to put
unusual things in /tmp. There's no (easy) way that tmpwatch can discover that a
file is in use.
I have to respectfully disagree with this. While in this instance, I was making
an unusual use of /tmp, there are a number problems with not checking whether
the file is open before deleting it.
As more and more commercial software is developed for Linux, /tmp may be used in
ways not expected. Even free software may use /tmp in ways you don't expect.
For example, Meta-HTML (www.metahtml.org) is a web-server which puts its session
database in /tmp by default. Of course, once tmpwatch deletes it, it continues
to work ... but none of the other utilities designed to access the session
database will work.
While it may in INCONVENIENT to fix this, I doubt that it is difficult - the
code is in lsof.
we have added a flag to use fuser to determine whether a file is open or not for
6.2. However, this option is turned off by default.