Hello
i have tested the "non common" path of the IO.
i have made the following tests:
1.
. pull one disk out of supermicro p8sct machine.
. open a DEVICE in direct IO manner.
. send a simple pread io and asynch read io to this DISK
2.
. pull one disk out of supermicro p8sct machine.
. open a FILE in direct IO manner.
. send a simple pread io and asynch read io to the FILE
results:
1.
pread returnred the size of the io sent as if they was no bug.
The same applied for the async io (events->res is 4096 bytes ).
2.
pread and async io returned 0 bytes read.
dmesg reports for test 1 :
ata1: handling error/timeout
ata1: port reset, p_is 0 is 0 pis 0 cmd c017 tf 7f ss 0 se 0
ata1: status=0x50 { DriveReady SeekComplete }
sda: Current: sense key=0x0
ASC=0x0 ASCQ=0x0
ata1: handling error/timeout
ata1: port reset, p_is 0 is 0 pis 0 cmd c017 tf 7f ss 0 se 0
ata1: status=0x50 { DriveReady SeekComplete }
sda: Current: sense key=0x0
ASC=0x0 ASCQ=0x0
dmesg reports nothing in test 2.
xxxxx
i have attacched the test code in tar ball.
thank you.
--
Raz
Attachment:
aioerr.tgz
Description: GNU Zip compressed data
