On Thu, Jan 20, 2011 at 08:37:21AM +0100, Miloslav TrmaÄ wrote: > Nathanael D. Noblet pÃÅe v Ät 20. 01. 2011 v 00:33 -0700: > > On 01/19/2011 12:11 PM, Callum Lerwick wrote: > > > On Thu, Dec 23, 2010 at 11:26 AM, drago01<drago01@xxxxxxxxx> wrote: > > >> Well /tmp should be mounted tmpfs anyway (I have been doing this for > > >> years and it is working just fine). > > >> tmp isn't a persistent storage so it makes a lot of sense, and it is > > >> *not* a dumping ground for giant files (apps that try to do that are > > >> just broken). > > > > > > Unfortunately firefox is one of those apps. I experimented with tmpfs > > > /tmp a while back, and ran into very much badness. /tmp rapidly gets > > > all full of large PDFs I've clicked on, as well as the flash plugin > > > seems to like to spool video its streaming in /tmp. > > > > Playing around with flash spooling, I noticed that Chrome uses > > ~/.cache/google-chrome... I wonder if firefox and friends should use > > places like that instead? > If /tmp is not supposed to be used for data that is inconvenient to > store in memory for whatever reason, and that should be automatically > removed when it is not used, what _is_ it supposed to be used for? The FHS has some scattered guidance: (1) http://www.pathname.com/fhs/pub/fhs-2.3.html#THEROOTFILESYSTEM (2) http://www.pathname.com/fhs/pub/fhs-2.3.html#VARTMPTEMPORARYFILESPRESERVEDBETWEE (3) http://www.pathname.com/fhs/pub/fhs-2.3.html#TMPTEMPORARYFILES I read from this: that (1) the root filesystem should be considered a limited resource (as it is on some embedded systems, not necessarily on Fedora) and so you shouldn't store excessively large files there. "Root filesystem" would include /tmp in many but not all cases. That (3) also says that /tmp can be cleaned up at each reboot. It isn't on Fedora, but it is on Debian for example. On Fedora /tmp is cleaned after 10 days. That (2) says /var/tmp is suitable for files that need to persist across reboots. And because of (1) is also suitable for large files. On Fedora /var/tmp is cleaned after 30 days. If what you're storing isn't a temporary file (whatever that means) then there are better places to put them: eg. the home directory, /var/cache, /var/spool etc. After reading this I made some changes to libguestfs so it behaves more according to these rules. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
