1）6月26日 06:50 系统日志【rport-7:0-2: blocked FC remote port time out: removing target and saving binding】
2）Jun 26 06:50:18 bhsdb1 multipathd: ocr: failed in domap for removal of path sdb
Jun 26 06:50:18 bhsdb1 multipathd: uevent trigger error
Jun 26 06:50:18 bhsdb1 kernel: device-mapper: table: 253:5: multipath: error getting device
Jun 26 06:50:18 bhsdb1 kernel: device-mapper: ioctl: error adding target to table
Jun 26 06:50:18 bhsdb1 multipathd: sdc: remove path (uevent)
Jun 26 06:50:18 bhsdb1 kernel: device-mapper: table: 253:7: multipath: error getting device
Jun 26 06:50:18 bhsdb1 kernel: device-mapper: ioctl: error adding target to table
3）Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl1/trace/orcl1_m000_31330.trc:
ORA-00202: control file: '+DATA/orcl/controlfile/current.256.844701409'
ORA-15081: failed to submit an I/O operation to a disk
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl1/trace/orcl1_m000_31330.trc:
ORA-15025: could not open disk "/dev/dm-7"
ORA-27041: unable to open file
4）共享存储的权限设置，有变更（无人为修改过，机房没有断电，断网情况）