O que esses erros significam no teste de disco sysbench?

Question

Eu tenho executado um teste contínuo de testes de disco sysbench no meu sistema Linux que usa compact flash. Estou vendo alguns erros na saída, conforme mostrado abaixo. O que esses erros significam exatamente? Eles significam que algumas das leituras do disco falharam? A parte em si é uma parte de classe industrial e suporta SMART, e a SMART não relatou falhas irrecuperáveis de ECC.

O comando que eu estava usando para executar o teste foi:

while true; do sysbench --num-threads=16 --test=fileio --file-total-size=3500M --file-test-mode=rndrw prepare; sysbench --num-threads=16 --test=fileio --file-total-size=500M --file-test-mode=rndrw run; sync; sysbench --num-threads=16 --test=fileio --file-total-size=3500M --file-test-mode=rndrw cleanup; done

Exemplo de saída:

sysbench 0.4.12:  multi-threaded system evaluation benchmark

128 files, 28000Kb each, 3500Mb total
Creating files for the test...
FATAL: Failed to write file! errno = 28 (¦?¦)
sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 16

Extra file open flags: 0
128 files, 3.9062Mb each
500Mb total file size
Block size 16Kb
Number of random requests for random IO: 10000
Read/Write ratio for combined random IO test: 1.50
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Threads started!
FATAL: Failed to read file! file: 127 pos: 2965504 errno = 0 ()
FATAL: Failed to read file! file: 127 pos: 540672 errno = 0 ()
FATAL: Failed to read file! file: 130 pos: 655360 errno = 0 ()
FATAL: Failed to read file! file: 129 pos: 2441216 errno = 0 ()
FATAL: Failed to read file! file: 129 pos: 475136 errno = 0 ()
FATAL: Failed to read file! file: 128 pos: 2588672 errno = 0 ()
FATAL: Failed to read file! file: 126 pos: 2588672 errno = 0 ()
FATAL: Failed to read file! file: 127 pos: 2899968 errno = 0 ()
FATAL: Failed to read file! file: 125 pos: 3309568 errno = 0 (T¦v¦)
FATAL: Failed to read file! file: 126 pos: 49152 errno = 0 (¦v¦0R0¦¦¦v¦R0¦¦u¦¦Q0¦T¦Q0¦T¦v¦)
FATAL: Failed to read file! file: 125 pos: 1097728 errno = 0 ()
FATAL: Failed to read file! file: 126 pos: 606208 errno = 0 ()
FATAL: Failed to write file! file: 125 pos: 3440640 errno = 28 ()
FATAL: Failed to wrisysbench 0.4.12:  multi-threaded system evaluation benchmark

    

Answer 1

Pode ser um bug no sysbench. Eu encontrei um semelhante aqui intitulado: Executando 'prepare' no teste fileio com --file-extra-flags = falha direta .

trecho

./sysbench --test=fileio --file-total-size=1G --file-test-mode=rndrw --max-time=18000 --max-requests=0 --num-threads=4 --rand-init=on --file-num=2 --file-fsync-freq=0 --file-block-size=16384 --report-interval=10 --file-extra-flags=direct prepare
sysbench 0.5: multi-threaded system evaluation benchmark

2 files, 524288Kb each, 1024Mb total
Creating files for the test...
Extra file open flags: 3
Creating file test_file.0
FATAL: Failed to write file! errno = 9 (Bad file descriptor)

Eu arquivaria um bug com o projeto SysBench. Você pode fazer isso aqui:

• link

Especificamente, há um link ao lado (à direita) para relatar bugs .