* scsi_block_when_processing_errors - Prevent cmds from being queued. * @sdev: Device on which we are performing recovery. * * Description: * We block until the host is out of error recovery, and then check to * see whether the host or the device is offline. * * Return va...
scsi_block_when_processing_errors(SDev)) { 204 196 err = -ENODEV; 205 197 goto out; 206 198 } 207 199 208 - memset(sense, 0, sizeof(*sense)); 200 + memset(sense_buffer, 0, sizeof(sense_buffer)); 209 201 result = scsi_execute(SDev, cgc->cmd, cgc->data_direction...
There is a small probability it will spend some timewaiting for a command block to become available. In this case the wait isinterruptible. If O_NONBLOCK is active then this scenario will cause a EAGAIN. 3、 read(int sg_fd, void * buffer, size_t count) The 'buffer' 指向struct sg_io...
When the specific field SERVICE ACTION is not defined in a CDB format, the bits identified as the SERVICE ACTION field in a CDB shall be used or reserved as specified by the particular CDB format. 24 SCSI Commands Reference Manual, Rev. C 2.2.3 Logical block address The logical block ...
When the specific field SERVICE ACTION is not defined in a CDB format, the bits identified as the SERVICE ACTION field in a CDB shall be used or reserved as specified by the particular CDB format. 2.2.3 Logical block address The logical block addresses on a logical unit or within a ...
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It is described in the T10.org SCSI Block Command (SBC-4) document – here is the introduction From Working Draft SCSI Block Commands – 4 (SBC-4) 39 4.11 Sanitize operations 4.11.1 Sanitize operations overview A sanitize operation causes the device server to: affect the information on ...
2639if (rq->errors) 2640err = -EIO; 2641 2642return err; 2643 } 抛去那些用于错误处理的代码,这个函数真正有意义的代码就是两行,blk_execute_rq_nowait和wait_for_completion.先看前者,来自block/ll_rw_blk.c: 2576 /** 2577* blk_execute_rq_nowait - insert a request into queue for execution...
PROBLEM TO BE SOLVED: To simplify a control program for recognizing the execution situation of continuous control when continuous control is interrupted due to errors and to speed up processing in an SCSI (small computer system interface) controller provided with a function for continuously changing ...
Timeout starts when the command is transmitted on the SCSI bus. pkt_scbp Pointer to the SCSI status completion block; this is filled in by the host bus adapter driver. pkt_cdbp Pointer to the SCSI command descriptor block, the actual command to be sent to the target device. The ...