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-rwxr-xr-xt/strided.py350
1 files changed, 350 insertions, 0 deletions
diff --git a/t/strided.py b/t/strided.py
new file mode 100755
index 00000000..47ce5523
--- /dev/null
+++ b/t/strided.py
@@ -0,0 +1,350 @@
+#!/usr/bin/python
+# Note: this script is python2 and python3 compatible.
+#
+# strided.py
+#
+# Test zonemode=strided. This uses the null ioengine when no file is
+# specified. If a file is specified, use it for randdom read testing.
+# Some of the zoneranges in the tests are 16MiB. So when using a file
+# a minimum size of 32MiB is recommended.
+#
+# USAGE
+# python strided.py fio-executable [-f file/device]
+#
+# EXAMPLES
+# python t/strided.py ./fio
+# python t/strided.py ./fio -f /dev/sda
+# dd if=/dev/zero of=temp bs=1M count=32
+# python t/strided.py ./fio -f temp
+#
+# REQUIREMENTS
+# Python 2.6+
+#
+# ===TEST MATRIX===
+#
+# --zonemode=strided, zoneskip >= 0
+# w/ randommap and LFSR
+# zonesize=zonerange all blocks in zonerange touched
+# zonesize>zonerange all blocks touched and roll-over back into zone
+# zonesize<zonerange all blocks inside zone
+#
+# w/o randommap all blocks inside zone
+#
+
+from __future__ import absolute_import
+from __future__ import print_function
+import os
+import sys
+import argparse
+import subprocess
+
+
+def parse_args():
+ parser = argparse.ArgumentParser()
+ parser.add_argument('fio',
+ help='path to fio executable (e.g., ./fio)')
+ parser.add_argument('-f', '--filename', help="file/device to test")
+ args = parser.parse_args()
+
+ return args
+
+
+def run_fio(fio, test, index):
+ filename = "strided"
+ fio_args = [
+ "--name=strided",
+ "--zonemode=strided",
+ "--log_offset=1",
+ "--randrepeat=0",
+ "--rw=randread",
+ "--zoneskip=0",
+ "--write_iops_log={0}{1:03d}".format(filename, index),
+ "--output={0}{1:03d}.out".format(filename, index),
+ "--zonerange={zonerange}".format(**test),
+ "--zonesize={zonesize}".format(**test),
+ "--bs={bs}".format(**test),
+ ]
+ if 'norandommap' in test:
+ fio_args.append('--norandommap')
+ if 'random_generator' in test:
+ fio_args.append('--random_generator={random_generator}'.format(**test))
+ if 'offset' in test:
+ fio_args.append('--offset={offset}'.format(**test))
+ if 'filename' in test:
+ fio_args.append('--filename={filename}'.format(**test))
+ fio_args.append('--filesize={filesize})'.format(**test))
+ else:
+ fio_args.append('--ioengine=null')
+ fio_args.append('--size={size}'.format(**test))
+ fio_args.append('--io_size={io_size}'.format(**test))
+ fio_args.append('--filesize={size})'.format(**test))
+
+ output = subprocess.check_output([fio] + fio_args, universal_newlines=True)
+
+ f = open("{0}{1:03d}_iops.1.log".format(filename, index), "r")
+ log = f.read()
+ f.close()
+
+ return log
+
+
+def check_output(iops_log, test):
+ zonestart = 0 if 'offset' not in test else test['offset']
+ iospersize = test['zonesize'] / test['bs']
+ iosperrange = test['zonerange'] / test['bs']
+ iosperzone = 0
+ lines = iops_log.split('\n')
+ zoneset = set()
+
+ for line in lines:
+ if len(line) == 0:
+ continue
+
+ if iosperzone == iospersize:
+ # time to move to a new zone
+ iosperzone = 0
+ zoneset = set()
+ zonestart += test['zonerange']
+ if zonestart >= test['filesize']:
+ zonestart = 0 if 'offset' not in test else test['offset']
+
+ iosperzone = iosperzone + 1
+ tokens = line.split(',')
+ offset = int(tokens[4])
+ if offset < zonestart or offset >= zonestart + test['zonerange']:
+ print("Offset {0} outside of zone starting at {1}".format(
+ offset, zonestart))
+ return False
+
+ # skip next section if norandommap is enabled with no
+ # random_generator or with a random_generator != lfsr
+ if 'norandommap' in test:
+ if 'random_generator' in test:
+ if test['random_generator'] != 'lfsr':
+ continue
+ else:
+ continue
+
+ # we either have a random map enabled or we
+ # are using an LFSR
+ # so all blocks should be unique and we should have
+ # covered the entire zone when iosperzone % iosperrange == 0
+ block = (offset - zonestart) / test['bs']
+ if block in zoneset:
+ print("Offset {0} in zone already touched".format(offset))
+ return False
+
+ zoneset.add(block)
+ if iosperzone % iosperrange == 0:
+ if len(zoneset) != iosperrange:
+ print("Expected {0} blocks in zone but only saw {1}".format(
+ iosperrange, len(zoneset)))
+ return False
+ zoneset = set()
+
+ return True
+
+
+if __name__ == '__main__':
+ args = parse_args()
+
+ tests = [ # randommap enabled
+ {
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "offset": 8*4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "zonerange": 16*1024*1024,
+ "zonesize": 16*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "zonerange": 4096,
+ "zonesize": 4*4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "zonerange": 16*1024*1024,
+ "zonesize": 32*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "zonerange": 8192,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "zonerange": 16*1024*1024,
+ "zonesize": 8*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ # lfsr
+ {
+ "random_generator": "lfsr",
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "offset": 8*4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 16*1024*1024,
+ "zonesize": 16*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 4096,
+ "zonesize": 4*4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 16*1024*1024,
+ "zonesize": 32*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 8192,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "random_generator": "lfsr",
+ "zonerange": 16*1024*1024,
+ "zonesize": 8*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ # norandommap
+ {
+ "norandommap": 1,
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "offset": 8*4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 4096,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 16*1024*1024,
+ "zonesize": 16*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 4096,
+ "zonesize": 8192,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 16*1024*1024,
+ "zonesize": 32*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 8192,
+ "zonesize": 4096,
+ "bs": 4096,
+ "size": 16*4096,
+ "io_size": 16*4096,
+ },
+ {
+ "norandommap": 1,
+ "zonerange": 16*1024*1024,
+ "zonesize": 8*1024*1024,
+ "bs": 4096,
+ "size": 256*1024*1024,
+ "io_size": 256*1024*204,
+ },
+
+ ]
+
+ index = 1
+ passed = 0
+ failed = 0
+
+ if args.filename:
+ statinfo = os.stat(args.filename)
+ filesize = statinfo.st_size
+ if filesize == 0:
+ f = os.open(args.filename, os.O_RDONLY)
+ filesize = os.lseek(f, 0, os.SEEK_END)
+ os.close(f)
+
+ for test in tests:
+ if args.filename:
+ test['filename'] = args.filename
+ test['filesize'] = filesize
+ else:
+ test['filesize'] = test['size']
+ iops_log = run_fio(args.fio, test, index)
+ status = check_output(iops_log, test)
+ print("Test {0} {1}".format(index, ("PASSED" if status else "FAILED")))
+ if status:
+ passed = passed + 1
+ else:
+ failed = failed + 1
+ index = index + 1
+
+ print("{0} tests passed, {1} failed".format(passed, failed))
+
+ sys.exit(failed)