vdbench數據一致性校驗原理 ===> Data Validation Key miscompare. Expecting key .

vdbench 數據一致性校驗問題彙總：

校驗參數點擊打開鏈接含義請自查：

data_errors=1
sd=sd1,lun=/root/redlicha/vdbench/testfile.bin,threads=4,size=3g
wd=wd1,sd=(sd1),xfersize=(4k,25.68,8k,26.31,16k,6.4,32k,7.52,60k,10.52,128k,9.82,252k,7.31,504k,6.19,984k,0.23,1032k,0.02),rdpct=50,seekpct=100,openflags=directio
rd=run1,wd=wd1,iorate=max,elapsed=7200,interval=1

Also take data validation into account when testing with vdbench:
e.g. -vr -j

-v Activate data validation.
-vr Activate data validation, immediately re-read after each write.
-vw Activate data validation, but don’t read before write.
-vt Activate data validation, keep track of each write timestamp (memory
intensive)
-j Activate data validation

-jn

-vr

-vt

vdbench配置中，校驗方式：

create_anchors=yes

validate=yes

validate=read

validate=read_after_write

validate=no_preread

validate=time

journal=yes

journal=noflush

錯誤日誌：

       All corruptions are of the same type: ^M

       ===> Data Validation Key miscompare. Expecting key=0x51 received key=0x50 (81/80)^M

       Only the FIRST sector will be reported:^M

       Data Validation error for fsd=fsd1; FSD lba: 0x119e1000; Key block size: 4096; relative sector in data block: 0x00 ^M

       File name: z:\vdbench2\vdb.1_1.dir\vdb_f0082.file; file block lba: 0x00001000; bad sector file lba: 0x00001000^M
       0x000   00000000 119e1000 ........ ........   00000000 119e1000 0000015e 245cc543^M

       0x010   51..0000 31647366 20202020 00000000   50e70000 31647366 20202020 00000e24^M

       There are no mismatches in bytes 32-511

辦法：

點擊打開鏈接

修改

the fact that at this time Vdbench can not properly handle a PARTIAL Key Block during journal recovery

-vw
validate=read_after_write

validate=no_preread