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[Xen-devel] Bug: xm commands hanging due to poor threading in xend



I have noticed my most major issue with putting xend into full production is with many xm commands being issued it hangs and only starts working (sometimes) after a "service xend restart". I created a bug a long time for this and have attached 3 different sets of logs using xen-bugtool. This happens to most servers after running for 3-4 days. Those that have little activity on the xend daemon (older servers that were upgraded) can go 2 weeks+ at this point. Once Xen gets to this state even restarting xend so the list command (and others) work, running "xm shutdown -a" will guarantee an internal server error from xend.

I've also run into this once:

Message from syslogd@vm20 at Fri Jan 20 23:16:52 2006 ...
vm20 xenstored: xenstored corruption: connection id -1: err No such file or directory: No child '(null)' found
Error: Error connecting to xend: Connection refused.  Is xend running?

This is all using -unstable. There are not many commits to 3.0-testing specifically regarding xend/tdb/xenstore so tracking it at this point seems useless.

Bug url: http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=465

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