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Vdbench file system operations

Specify file system operations in FWD and RD

In the File system Workload Definition(FWD), we can specify a single file sysetm operation that must be executed for the workload, with the parameter ‘operation=’. The valid operation can be mkdir,rmdir,create,delete,open,close,read,write,getattr and setattr. We can specify ‘fwd=xxx,rdpct=nn’ to allow for mixed read and write operations against the same file.

If one or more operations need to be specified, the parameter ‘fwd=xxx,operations=’ in Run Definition(RD) can be leveraged to override the single operation in FWD. For example, the parameter ‘operations=mkdir’ or ‘operations=(read,getattr)’ can be specified in RD. Vdbench will fail the operation if the file structure is not created before it is accessed.

In the following example, we will run vdbench to make directories, create files, getattr, delete files and remove directories.

Make directories

Prepare the job file to make the directories:

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$ cat jobfile/vdb_mkdir.job
hd=default,vdbench=/home/tester/vdbench_test,shell=ssh,user=root
hd=host1,jvms=1,system=192.168.1.2

fsd=fsd1,anchor=/mnt/bench1,depth=5,width=5,files=2,size=4k
fwd=fwd1,fsd=fsd1,host=host1,operation=mkdir
rd=rd1,fwd=fwd1,format=no,fwdrate=max

Run vdbench job to make the directories:

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$ ./vdbench -f jobfile/vdb_mkdir.job
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Vdbench distribution: vdbench50407 Tue June 05  9:49:29 MDT 2018
For documentation, see 'vdbench.pdf'.

02:06:05.755 input argument scanned: '-fjobfile/vdb_mkdir.job'
02:06:05.833 Anchor size: anchor=/mnt/bench1: dirs:        3,905; files:        6,250; bytes:    24.414m (25,600,000)
02:06:06.097 Starting slave: ssh 192.168.1.2 -l root /home/tester/vdbench_test/vdbench SlaveJvm -m 192.168.1.3 -n 192.168.1.2-10-220316-02.06.05.716 -l host1-0 -p 5570
02:06:06.527 All slaves are now connected
02:06:08.002 Starting RD=rd1; elapsed=30; fwdrate=max. For loops: None

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ...mkdir.... ....open.... ...close....
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp
02:06:09.065            1 3905.0  0.018   3.7 0.41   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0  3905  0.018   0.0  0.000   0.0  0.000
02:06:09.102      avg_2-1    NaN  0.000   NaN  NaN   0.0    NaN  0.000    NaN  0.000   NaN   NaN    NaN       0   NaN  0.000   NaN  0.000   NaN  0.000
02:06:09.102      std_2-1
02:06:09.103      max_2-1
02:06:09.216
02:06:09.216 Miscellaneous statistics:
02:06:09.216 (These statistics do not include activity between the last reported interval and shutdown.)
02:06:09.216 DIRECTORY_CREATES   Directories created:                          3,905      3,905/sec
02:06:09.216
02:06:09.932 Vdbench execution completed successfully. Output directory: /home/tester/vdbench_test/output

$ ls -la /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/
total 8
drwxr-xr-x 2 root root 4096 Mar 16 02:06 .
drwxr-xr-x 7 root root 4096 Mar 16 02:06 ..

Create files in the existing directories

Prepare the job file to create files in the existing directories:

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$ cat jobfile/vdb_create.job
hd=default,vdbench=/home/tester/vdbench_test,shell=ssh,user=root
hd=host1,jvms=1,system=192.168.1.2

fsd=fsd1,anchor=/mnt/bench1,depth=5,width=5,files=2,size=4k
fwd=fwd1,fsd=fsd1,host=host1,operation=create
rd=rd1,fwd=fwd1,format=restart,fwdrate=max

Note that we specify the parameter ‘format=restart’. It will create files that have not been created and will also expand files that have not reached the proper file size.

Run vdbench job to create files:

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$ ./vdbench -f jobfile/vdb_create.job
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Vdbench distribution: vdbench50407 Tue June 05  9:49:29 MDT 2018
For documentation, see 'vdbench.pdf'.

02:06:11.387 input argument scanned: '-fjobfile/vdb_create.job'
02:06:11.468 Anchor size: anchor=/mnt/bench1: dirs:        3,905; files:        6,250; bytes:    24.414m (25,600,000)
02:06:11.719 Starting slave: ssh 192.168.1.2 -l root /home/tester/vdbench_test/vdbench SlaveJvm -m 192.168.1.3 -n 192.168.1.2-10-220316-02.06.11.352 -l host1-0 -p 5570
02:06:12.148 All slaves are now connected
02:06:13.002 Starting RD=format_for_rd1
02:06:13.238 host1-0: anchor=/mnt/bench1 mkdir complete.
02:06:13.418 host1-0: anchor=/mnt/bench1 create complete.

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ...mkdir.... ...rmdir.... ...create... ....open.... ...close.... ...delete...
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp  rate   resp  rate   resp  rate   resp
02:06:14.063            1 6250.0  0.019  12.7 0.99   0.0    0.0  0.000 6250.0  0.019  0.00 24.41  24.41    4096   0.0  0.000   0.0  0.000  6250  0.219  6250  0.071  6250  0.006   0.0  0.000
02:06:14.103      avg_2-1    NaN  0.000   NaN  NaN   0.0    NaN  0.000    NaN  0.000   NaN   NaN    NaN       0   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000
02:06:14.103      std_2-1
02:06:14.103      max_2-1
02:06:14.217
02:06:14.217 Miscellaneous statistics:
02:06:14.217 (These statistics do not include activity between the last reported interval and shutdown.)
02:06:14.218 FILE_CREATES        Files created:                                6,250      6,250/sec
02:06:14.218 WRITE_OPENS         Files opened for write activity:              6,250      6,250/sec
02:06:14.218 DIR_EXISTS          Directory may not exist (yet):                    7          7/sec
02:06:14.218 FILE_CLOSES         Close requests:                               6,250      6,250/sec
02:06:14.218
02:06:15.001 Starting RD=rd1; elapsed=30; fwdrate=max. For loops: None
02:06:15.344
02:06:15.344 Message from slave host1-0:
02:06:15.345 Anchor: /mnt/bench1
02:06:15.345 Vdbench is trying to create a new file, but all files already exist,
02:06:15.345 and no threads are currently active deleting files
02:06:15.345 FwgThread.canWeGetMoreFiles(): Shutting down threads for operation=create
02:06:15.345

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ...mkdir.... ...rmdir.... ...create... ....open.... ...close.... ...delete...
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp  rate   resp  rate   resp  rate   resp
02:06:16.021            1    0.0  0.000   1.8 0.09   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000   0.0  0.000   0.0  0.000   0.0  0.000   0.0  0.000
02:06:16.030      avg_2-1    NaN  0.000   NaN  NaN   0.0    NaN  0.000    NaN  0.000   NaN   NaN    NaN       0   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000   NaN  0.000
02:06:16.030      std_2-1
02:06:16.030      max_2-1
02:06:16.135 Miscellaneous statistics: All counters are zero
02:06:16.602 Vdbench execution completed successfully. Output directory: /home/tester/vdbench_test/output

$ ls -la /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/
total 16
drwxr-xr-x 2 root root 4096 Mar 16 02:06 .
drwxr-xr-x 7 root root 4096 Mar 16 02:06 ..
-rw-r--r-- 1 root root 4096 Mar 16 02:06 vdb_f0000.file
-rw-r--r-- 1 root root 4096 Mar 16 02:06 vdb_f0001.file

Getattr

Prepare the job file to getattr:

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$ cat jobfile/vdb_getattr.job
hd=default,vdbench=/home/tester/vdbench_test,shell=ssh,user=root
hd=host1,jvms=1,system=192.168.1.2

fsd=fsd1,anchor=/mnt/bench1,depth=5,width=5,files=2,size=4k
fwd=fwd1,fsd=fsd1,host=host1,operation=getattr
rd=rd1,fwd=fwd1,format=no,fwdrate=max

Run vdbench job to getattr:

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$ ./vdbench -f jobfile/vdb_getattr.job
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Vdbench distribution: vdbench50407 Tue June 05  9:49:29 MDT 2018
For documentation, see 'vdbench.pdf'.

02:06:18.059 input argument scanned: '-fjobfile/vdb_getattr.job'
02:06:18.145 Anchor size: anchor=/mnt/bench1: dirs:        3,905; files:        6,250; bytes:    24.414m (25,600,000)
02:06:18.408 Starting slave: ssh 192.168.1.2 -l root /home/tester/vdbench_test/vdbench SlaveJvm -m 192.168.1.3 -n 192.168.1.2-10-220316-02.06.18.020 -l host1-0 -p 5570
02:06:18.778 All slaves are now connected
02:06:20.002 Starting RD=rd1; elapsed=30; fwdrate=max. For loops: None

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ....open.... ...close.... ..getattr...
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp
02:06:21.062            1  39541  0.015   8.1 0.84   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 39541  0.015
02:06:22.032            2  77608  0.010   5.3 1.47   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 77608  0.010
02:06:23.016            3  83661  0.009   4.5 1.26   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83661  0.009
02:06:24.014            4  83054  0.009   4.4 1.35   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83054  0.009
02:06:25.014            5  83753  0.009   4.3 1.26   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83753  0.009
02:06:26.012            6  83907  0.009   4.3 1.23   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83907  0.009
02:06:27.012            7  83520  0.009   4.3 1.26   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83520  0.009
02:06:28.011            8  82677  0.009   4.4 1.19   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82677  0.009
02:06:29.016            9  83093  0.009   4.6 1.19   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83093  0.009
02:06:30.012           10  84090  0.009   4.5 1.23   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 84090  0.009
02:06:31.011           11  83013  0.009   4.2 1.16   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83013  0.009
02:06:32.013           12  83158  0.010   4.3 1.38   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 83158  0.010
02:06:33.010           13  74121  0.011   4.3 1.19   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 74121  0.011
02:06:34.009           14  77405  0.010   4.4 1.35   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 77405  0.010
02:06:35.011           15  82874  0.010   4.6 1.28   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82874  0.010
02:06:36.011           16  82855  0.010   4.6 1.34   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82855  0.010
02:06:37.010           17  82508  0.010   4.6 1.38   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82508  0.010
02:06:38.007           18  82766  0.010   4.6 1.38   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82766  0.010
02:06:39.009           19  82048  0.010   4.3 1.22   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82048  0.010
02:06:40.010           20  81357  0.010   4.4 1.25   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 81357  0.010
02:06:41.008           21  82723  0.010   4.4 1.28   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82723  0.010
02:06:42.007           22  82702  0.010   4.5 1.50   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82702  0.010
02:06:43.008           23  82793  0.010   4.3 1.41   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82793  0.010
02:06:44.009           24  82465  0.010   4.4 1.28   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82465  0.010
02:06:45.009           25  82695  0.010   4.4 1.32   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82695  0.010
02:06:46.008           26  82119  0.010   4.6 1.47   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82119  0.010
02:06:47.008           27  82297  0.010   4.8 1.72   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82297  0.010
02:06:48.007           28  82508  0.010   4.4 1.35   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82508  0.010
02:06:49.008           29  82545  0.010   4.4 1.41   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82545  0.010
02:06:50.007           30  82641  0.010   4.7 1.44   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82641  0.010
02:06:50.015     avg_2-30  82170  0.010   4.5 1.33   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000 82170  0.010
02:06:50.015     std_2-30 2147.1  0.018                                                                                                    2147  0.018
02:06:50.016     max_2-30  84090  5.854                                                                                                   84090  5.854
02:06:50.234
02:06:50.234 Miscellaneous statistics:
02:06:50.234 (These statistics do not include activity between the last reported interval and shutdown.)
02:06:50.234 GET_ATTR            Getattr requests:                         2,422,766     80,758/sec
02:06:50.234
02:06:51.201 Vdbench execution completed successfully. Output directory: /home/tester/vdbench_test/output

$ ls -la /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/
total 16
drwxr-xr-x 2 root root 4096 Mar 16 02:06 .
drwxr-xr-x 7 root root 4096 Mar 16 02:06 ..
-rw-r--r-- 1 root root 4096 Mar 16 02:06 vdb_f0000.file
-rw-r--r-- 1 root root 4096 Mar 16 02:06 vdb_f0001.file

Delete files

Prepare the job file to delete files:

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$ cat jobfile/vdb_delete.job
hd=default,vdbench=/home/tester/vdbench_test,shell=ssh,user=root
hd=host1,jvms=1,system=192.168.1.2

fsd=fsd1,anchor=/mnt/bench1,depth=5,width=5,files=2,size=4k
fwd=fwd1,fsd=fsd1,host=host1,operation=delete
rd=rd1,fwd=fwd1,format=no,fwdrate=max

Run vdbench job to delete files:

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$ ./vdbench -f jobfile/vdb_delete.job
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Vdbench distribution: vdbench50407 Tue June 05  9:49:29 MDT 2018
For documentation, see 'vdbench.pdf'.

02:06:52.656 input argument scanned: '-fjobfile/vdb_delete.job'
02:06:52.757 Anchor size: anchor=/mnt/bench1: dirs:        3,905; files:        6,250; bytes:    24.414m (25,600,000)
02:06:53.060 Starting slave: ssh 192.168.1.2 -l root /home/tester/vdbench_test/vdbench SlaveJvm -m 192.168.1.3 -n 192.168.1.2-10-220316-02.06.52.608 -l host1-0 -p 5570
02:06:53.542 All slaves are now connected
02:06:55.002 Starting RD=rd1; elapsed=30; fwdrate=max. For loops: None
02:06:55.403
02:06:55.403 Message from slave host1-0:
02:06:55.403 Anchor: /mnt/bench1
02:06:55.403 Vdbench is trying to delete a file, but no files are available, and no
02:06:55.404 threads are currently active creating new files.
02:06:55.404 FwgThread.canWeGetMoreFiles(): Shutting down threads for operation=delete
02:06:55.404

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ....open.... ...close.... ...delete...
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp
02:06:56.061            1 6250.0  0.044   7.3 0.61   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0   0.0  0.000   0.0  0.000  6250  0.044
02:06:56.096      avg_2-1    NaN  0.000   NaN  NaN   0.0    NaN  0.000    NaN  0.000   NaN   NaN    NaN       0   NaN  0.000   NaN  0.000   NaN  0.000
02:06:56.096      std_2-1
02:06:56.097      max_2-1
02:06:56.210
02:06:56.210 Miscellaneous statistics:
02:06:56.210 (These statistics do not include activity between the last reported interval and shutdown.)
02:06:56.210 FILE_DELETES        Files deleted:                                6,250      6,250/sec
02:06:56.211 FILE_MUST_EXIST     File does not exist (yet):                        1          1/sec
02:06:56.211
02:06:56.949 Vdbench execution completed successfully. Output directory: /home/tester/vdbench_test/output

$ ls -la /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/
total 8
drwxr-xr-x 2 root root 4096 Mar 16 02:06 .
drwxr-xr-x 7 root root 4096 Mar 16 02:06 ..

Remove directories

Prepare the job file to remove directories:

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$ cat jobfile/vdb_rmdir.job
hd=default,vdbench=/home/tester/vdbench_test,shell=ssh,user=root
hd=host1,jvms=1,system=192.168.1.2

fsd=fsd1,anchor=/mnt/bench1,depth=5,width=5,files=2,size=4k
fwd=fwd1,fsd=fsd1,host=host1,operation=rmdir
rd=rd1,fwd=fwd1,format=no,fwdrate=max

Run vdbench job to remove directories:

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$ ./vdbench -f jobfile/vdb_rmdir.job
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Vdbench distribution: vdbench50407 Tue June 05  9:49:29 MDT 2018
For documentation, see 'vdbench.pdf'.

02:06:58.406 input argument scanned: '-fjobfile/vdb_rmdir.job'
02:06:58.484 Anchor size: anchor=/mnt/bench1: dirs:        3,905; files:        6,250; bytes:    24.414m (25,600,000)
02:06:58.736 Starting slave: ssh 192.168.1.2 -l root /home/tester/vdbench_test/vdbench SlaveJvm -m 192.168.1.3 -n 192.168.1.2-10-220316-02.06.58.369 -l host1-0 -p 5570
02:06:59.158 All slaves are now connected
02:07:00.002 Starting RD=rd1; elapsed=30; fwdrate=max. For loops: None

Mar 16, 2022 ..Interval.. .ReqstdOps... ...cpu%...  read ....read..... ....write.... ..mb/sec... mb/sec .xfer.. ...rmdir.... ....open.... ...close....
                            rate   resp total  sys   pct   rate   resp   rate   resp  read write  total    size  rate   resp  rate   resp  rate   resp
02:07:01.051            1 3905.0  0.039   5.4 0.65   0.0    0.0  0.000    0.0  0.000  0.00  0.00   0.00       0  3905  0.039   0.0  0.000   0.0  0.000
02:07:01.089      avg_2-1    NaN  0.000   NaN  NaN   0.0    NaN  0.000    NaN  0.000   NaN   NaN    NaN       0   NaN  0.000   NaN  0.000   NaN  0.000
02:07:01.089      std_2-1
02:07:01.090      max_2-1
02:07:01.204
02:07:01.205 Miscellaneous statistics:
02:07:01.205 (These statistics do not include activity between the last reported interval and shutdown.)
02:07:01.205 DIRECTORY_DELETES   Directories deleted:                          3,905      3,905/sec
02:07:01.205
02:07:01.550 Vdbench execution completed successfully. Output directory: /home/tester/vdbench_test/output

$ ls -la /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/
ls: cannot access /mnt/bench1/vdb.1_1.dir/vdb.2_1.dir/vdb.3_1.dir/vdb.4_1.dir/vdb.5_1.dir/: No such file or directory

Reference

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