发明授权
US5594922A System for monitoring a library unit shared as input/output with higher
level unit wherein abnormal occupation of library by a higher level
unit is reset
失效
用于监视作为具有较高级别单元的输入/输出共享的库单元的系统，其中重置由较高级单元的库的异常占用
- 专利标题： System for monitoring a library unit shared as input/output with higher level unit wherein abnormal occupation of library by a higher level unit is reset
- 专利标题（中）： 用于监视作为具有较高级别单元的输入/输出共享的库单元的系统，其中重置由较高级单元的库的异常占用
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申请号： US301128申请日： 1994-09-06
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公开(公告)号： US5594922A公开(公告)日： 1997-01-14
- 发明人: Yoshio Suzuki , Naoyuki Takeda
- 申请人： Yoshio Suzuki , Naoyuki Takeda
- 申请人地址： JPX
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JPX
- 优先权： JPX5-311447 19931213
- 主分类号： G06F13/36
- IPC分类号： G06F13/36 ; G06F3/06 ; G06F13/00 ; G06F13/42 ; G06F13/10
摘要：
A plurality of higher-level units are connected to a library unit, for example, as a lower-level unit through an SCSI. Furthermore, the plurality of higher-level units are connected by means of a communication path to mutually exchange information regarding the status of use of SCSI for the access to the lower-level library unit. A monitoring control section is provided in each of the plurality of higher-level units to instruct necessary processing in response to the status of use of SCSI. Particularly, when an abnormal occupation of SCSI caused by hang-up of any other higher-level unit is detected by the monitoring control section of a higher-level unit, the higher-level unit instructs its own SCSI controller to reset the bus to achieve bus reset of the other SCSI controller, thus releasing the occupation.
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