Re: lvmetad hang...

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Dne 15.8.2014 v 19:33 Pirate Fibonacci napsal(a):
*
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Greeting All...

I've been using the lvm2py lib. after a predictable number usages of my
application, it appears that lvmetad halts. below is the relevant line from
top. upon kill the hung instance, my application will continue.


20807 root      20   0 23.934g  29356   3952 R  98.8  0.0  57:13.67 lvmetad

^^^^r^       ^^^^^^^^^^
                                                                     % cpu usage

any useful comments on what this maybe?

where may I find the source code for lvmetad ?


Hi

lvmetad is part of lvm2 source base spread in couple places:

lvm2/daemons/lvmetad
lmv2/libdaemon
lmv2/libdm


Usually it's best to attach to running lvmetad and explore it in gdb
(getting backtrace)

Also be sure you run with latest version - fixing bug in a year old code is not usually helpful.

It's also good if you could prepare a reproducer case (so it could be placed
in test suite)

Zdenek


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