Details
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Bug
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Resolution: Cannot Reproduce
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Major
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None
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Lustre 2.3.0
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Lustre server 2.1.4 centos 6.3
Lustre clients 2.3.0 sles11sp1
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2
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7461
Description
After we upgraded our clients from 2.1.3 to 2.3.0, some users (the crowd is increasing) started seeing their application to fail, to hang, or even crash. The servers run 2.1.4. In all cases, same application ran OK with 2.1.3.
Since we do not have reproducer on the hang and the crash cases, we here attach a reproducer that can cause application to fail. The test were executed with stripe count of 1, 2, 4, 8, 16. The higher number the stripe count the more likely application fails.
The 'reproducer1.scr' is a PBS script to start 1024 mpi tests.
'reproducer1.scr.o1000145' is PBS output of the execution.
'1000145.pbspl1.0.log.txt' is an output of one of our tools to collect /var/log/messages from servers and clients related to the specified job.
The PBS specific argument lines start with "#PBS " string and are ignored if executed without PBS. The script use SGI MPT, but can be converted to openmpi or intel mpi.