[lustre-discuss] unkillable process using llapi_layout_file_open

[John Bauer]

I have created a small reproducer program (81 lines of code) that 
results in a process that appears to hang in the kernel, accumulating 
cpu time.  The process is unresponsive to kill commands.  From gdb 
backtrace, it appears the call is stuck somewhere in fsetxattr() which 
is called by llapi_layout_file_open().  The problem happens only when a 
non-existent ost is added to the layout with a call to 
llapi_layout_ost_index_set().  The call to llapi_layout_sanity(), just 
before calling llapi_layout_file_open(), returns 0.  Is this a known issue?

Thanks, John
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