************************* hanginfo *************************
  /exports/testreports/47154/testresults/ost-pools-zfs-centos7_x86_64-centos7_x86_64/oleg426-client-timeout-core (3.10.0-7.9-debug) 
 *** UNINTERRUPTIBLE threads, classified ***

 ================== Waiting in io_schedule ==================
    ... 2 pids. Youngest,oldest: 4806, 26963  Ran ms ago: 3008455, 3011595
        sorted by ran_ago, youngest first
      [4806, 26963]

*** System activities other threads are waiting for ***
  --- Doing io_schedule ---
{26963, 4806}


+++WARNING+++ Possible hang

******************************************************************************
************************ A Summary Of Problems Found *************************
******************************************************************************
-------------------- A list of all +++WARNING+++ messages --------------------
    Possible hang
------------------------------------------------------------------------------

 ** Execution took   0.37s (real)   0.35s (CPU)