Administrator Guide

References
51 Dell EMC Ready Solution for HPC PixStor Storage | Document ID
MDtest
The following command is an example to run the metadata tests:
mpirun --allow-run-as-root -machinefile $hostlist --map-by node -np $threads
$mdtest -v -d $working_dir -i ${repetitions} -b $n_directories -z 1 -L -I
$n_files -y -u -t -F -w 4K -e 4K
Table 14 describes the MDtest command line options.
Table 14 MDtest command line options
Option
Description
-d
Directory in which the tests will run
-v
Verbosity (each instance of option increments by one)
-i
Number of iterations that the test will run
-b
Branching factor, how many directories to create, used in
conjunction with -z
-z
Depth of hierarchical directory structure
-L
Files only at leaf level of tree
-I
Number of files to create per directory
-y
Sync file after writing
-u
Unique working directory for each task
-t
Time unique working directory overhead
-F
Perform test on files only (no directories)
-w=N
bytes to write to each file after it is created
-e=N
bytes to read from each file