On Tue, Dec 13, 2011 at 2:55 PM, Matthias Rieber <suppor...@sucksass.de> wrote: > Hello, > > On 13.12.2011 13:54, richard -rw- weinberger wrote: >> On Tue, Dec 13, 2011 at 1:10 PM, Matthias Rieber <suppor...@sucksass.de> >> wrote: >>> Hi, >>> >>> I've a strange problem with ejabberd(a jabber server written in Erlang) >>> running under the user mode linux kernel. Almost everything works as >>> expected but a certain function, pubsub/pep, doesn't work. When I run >>> the very same installation in a chroot environment on the host, it >>> behaves correctly. The UML Kernel is a vanilla 2.6.32.49. I've tried >>> different systems 32bit/64bit, they show the same behaviour. >> >> Please define "doesn't work". > > hard to describe. The jabber server receives a xml stanza, it returns a > confirmation, that it has been processed correctly. The stanza should > lead to an information storage in the mnesia database, which didn't > happen, when I run ejabberd in UML. > >>> Due to the lack of any Erlang knowledge I can't check why the jabber >>> server doesn't work. Are there know issues with Erlang? Any ideas to >>> debug it without digging in the server? >> >> Maybe Erlang makes use of a system call which is not available on UML... >> You can try strace... > > I'll try that. What should I grep for in the strace log? >
For anything which can cause your problem. E.g. Failing system calls which should not fail... We've had problems with java and glibc where glibc used x86 specific futex operations which are not supported on UML... -- Thanks, //richard ------------------------------------------------------------------------------ Systems Optimization Self Assessment Improve efficiency and utilization of IT resources. Drive out cost and improve service delivery. Take 5 minutes to use this Systems Optimization Self Assessment. http://www.accelacomm.com/jaw/sdnl/114/51450054/ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
