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Disk Array : EMC CLARIION LUNs : 8 OS : RHEL4 Beta2 hugemem kernel HBA : Qlogic 2340 and Emulex LP9802 1 test1 ------------------------------------------------- /etc/modprobe.conf ------------------------------------------------- alias scsi_hostadapter lpfc alias scsi_hostadapter1 qla2300 options scsi_mod max_luns=8 rerun mkinitrd and reboot ------------------------------------------------- result: lun0 detect, lun1 ~ lun7 not detect 2. test2 ------------------------------------------------- /etc/grub.conf ------------------------------------------------- kernel ....... max_luns=8 ------------------------------------------------- reboot ------------------------------------------------- result: lun0 detect, lun1 ~ lun7 not detect 3.manual adding disks # echo "scsi add-single-device 0 0 0 1" > scsi # echo "scsi add-single-device 0 0 0 2" > scsi # echo "scsi add-single-device 0 0 0 3" > scsi # echo "scsi add-single-device 0 0 0 4" > scsi # echo "scsi add-single-device 0 0 0 5" > scsi # echo "scsi add-single-device 0 0 0 6" > scsi # echo "scsi add-single-device 0 0 0 7" > scsi dmesg ------ Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 Vendor: DGC Model: Rev: 0851 Type: Direct-Access ANSI SCSI revision: 04 # fdisk /dev/sdb Unable to open /dev/sdb # fdisk /dev/sdc Unable to open /dev/sdc # fdisk /dev/sdd Unable to open /dev/sdd |