== sanity test 54c: block device works in lustre ===================================================== 21:31:35 (1469766695)
make a loop file system with /mnt/client/f54c.sanity on /mnt/client/loop54c (3).
1+0 records in
1+0 records out
4096 bytes (4.1 kB) copied, 0.00136383 s, 3.0 MB/s
mke2fs 1.42.12.wc1 (15-Sep-2014)
Creating filesystem with 4100 1k blocks and 1032 inodes

Allocating group tables: 0/1   done                            
Writing inode tables: 0/1   done                            
Writing superblocks and filesystem accounting information: 0/1   done

30+0 records in
30+0 records out
122880 bytes (123 kB) copied, 0.000539603 s, 228 MB/s
Filesystem          1K-blocks  Used Available Use% Mounted on
/mnt/client/loop54c      3966   151      3610   5% /mnt/client/d54c.sanity
30+0 records in
30+0 records out
122880 bytes (123 kB) copied, 0.00017664 s, 696 MB/s
umount: /mnt/client/d54c.sanity: target is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))
rm: cannot remove '/mnt/client/d54c.sanity': Device or resource busy
 sanity test_54c: @@@@@@ FAIL: test_54c failed with 32 
  Trace dump:
  = /lib64/lustre/tests/test-framework.sh:4786:error()
  = /lib64/lustre/tests/test-framework.sh:5050:run_one()
  = /lib64/lustre/tests/test-framework.sh:5089:run_one_logged()
  = /lib64/lustre/tests/test-framework.sh:4936:run_test()
  = /lib64/lustre/tests/sanity.sh:4363:main()
Dumping lctl log to /tmp/test_logs/2016-07-28/211914/sanity.test_54c.*.1469766696.log
Resetting fail_loc on all nodes...done.