我有一个驱动器，其扇区大小 = 512 字节（/dev/sdb如下），还有一个驱动器（/dev/sdc如下），其扇区大小 = 520 字节，如下所示。
# lsscsi -g
[0:0:2:0] disk ATA SDLF1DAR-480G-1H RP41 /dev/sdb /dev/sg1
[0:0:3:0] disk ATA SDLFOEAM-100G-1H RF12 /dev/sdc /dev/sg2
我尝试在 Ubuntu 中运行 VDBench，扇区大小 = 512 字节的驱动器可以正常运行，如下所示：
/usr/local/vdbench503rc11# ./vdbench -f
Rnd_RD_4k_sdb.parm -o output/
Vdbench distribution: vdbench503rc11
For documentation, see 'vdbench.pdf'.
15:46:32.891 *
15:46:32.891 * This beta version 'vdbench503rc11' was built on Fri April 08 9:48:23 MDT 2011.
15:46:32.891 * which is more than 90 days ago.
15:46:32.891 * It is recommended that you look for a newer beta or possibly
15:46:32.891 * a newer GA version.
15:46:32.892 * Of course, it is preferred you download a newer beta version
15:46:32.892 * if available to help test the latest code.
15:46:32.892 *
15:46:32.893 input argument scanned: '-fRnd_RD_4k_sdb.parm'
15:46:32.894 input argument scanned: '-ooutput/'
15:46:32.963 Starting slave: /usr/local/vdbench503rc11/vdbench SlaveJvm -m localhost -n localhost-10-150513-15.46.32.857 -l localhost-0 -p 5570
15:46:33.303 All slaves are now connected
15:46:36.002 Starting RD=run1; I/O rate: Uncontrolled MAX; elapsed=10; For loops: None
May 13, 2015 interval i/o MB/sec bytes read resp read write resp resp queue cpu% cpu%
rate 1024**2 i/o pct time resp resp max stddev depth sys+u sys
15:46:37.045 1 16983.00 66.34 4096 100.00 0.432 0.432 0.000 5.826 0.061 7.3 11.8 3.1
15:46:38.057 2 17911.00 69.96 4096 100.00 0.438 0.438 0.000 1.424 0.013 7.9 5.0 3.4
15:46:39.053 3 18220.00 71.17 4096 100.00 0.438 0.438 0.000 0.897 0.007 8.0 4.9 2.8
15:46:40.058 4 18218.00 71.16 4096 100.00 0.438 0.438 0.000 1.106 0.013 8.0 4.7 3.9
15:46:41.060 5 18201.00 71.10 4096 100.00 0.438 0.438 0.000 0.989 0.010 8.0 6.4 3.6
15:46:42.057 6 18222.00 71.18 4096 100.00 0.438 0.438 0.000 0.952 0.008 8.0 5.4 3.6
15:46:43.056 7 18172.00 70.98 4096 100.00 0.440 0.440 0.000 1.071 0.025 8.0 4.9 3.1
15:46:44.061 8 18202.00 71.10 4096 100.00 0.438 0.438 0.000 1.069 0.011 8.0 5.4 3.6
15:46:45.059 9 18227.00 71.20 4096 100.00 0.438 0.438 0.000 1.072 0.011 8.0 4.8 3.6
15:46:46.056 10 18225.00 71.19 4096 100.00 0.438 0.438 0.000 1.071 0.013 8.0 5.6 3.8
15:46:46.070 avg_2-10 18177.56 71.01 4096 100.00 0.439 0.439 0.000 1.424 0.013 8.0 5.2 3.5
15:46:46.544 Vdbench execution completed successfully. Output directory: /usr/local/vdbench503rc11/output
但是扇区大小 = 520 字节的驱动器无法启动此运行，如下所示，并突出显示错误消息Undefined size for sd=sd1,lun=/dev/sdc。
/usr/local/vdbench503rc11# ./vdbench -f Rnd_RD_4k_sdc.parm -o output/
Vdbench distribution: vdbench503rc11
For documentation, see 'vdbench.pdf'.
15:47:42.014 *
15:47:42.014 * This beta version 'vdbench503rc11' was built on Fri April 08 9:48:23 MDT 2011.
15:47:42.014 * which is more than 90 days ago.
15:47:42.014 * It is recommended that you look for a newer beta or possibly
15:47:42.014 * a newer GA version.
15:47:42.014 * Of course, it is preferred you download a newer beta version
15:47:42.014 * if available to help test the latest code.
15:47:42.014 *
15:47:42.016 input argument scanned: '-fRnd_RD_4k_sdc.parm'
15:47:42.016 input argument scanned: '-ooutput/'
15:47:42.075 Starting slave: /usr/local/vdbench503rc11/vdbench SlaveJvm -m localhost -n localhost-10-150513-15.47.41.982 -l localhost-0 -p 5570
15:47:42.393 All slaves are now connected
15:47:43.503
**15:47:43.503 Undefined size for sd=sd1,lun=/dev/sdc**
**15:47:43.503 Either the lun or file does not exist, or you do not have permission to open the lun or file.**
15:47:43.503
15:47:43.504 No lun or file size available.
15:47:43.504
java.lang.RuntimeException: No lun or file size available.
at Vdb.common.failure(common.java:307)
at Vdb.InfoFromHost.storeAndCompare(InfoFromHost.java:743)
at Vdb.InfoFromHost.receiveInfoFromHost(InfoFromHost.java:479)
at Vdb.SlaveOnMaster.processSlave(SlaveOnMaster.java:173)
at Vdb.SlaveOnMaster.run(SlaveOnMaster.java:60)
也许您可以给我一些建议，以便我可以让 Ubuntu SCSI 驱动程序支持非 512 字节扇区大小，例如扇区大小 = 520 字节、524 字节、528 字节等等。