Got SAN lun 0 without mapping any disk to the server
I just zoning the hba to the storage but didn't map any disk to the server yet. But I got lun0 appear on the /dev/disk/by-path/ . see below output.
/dev/disk/by-path: total 0 lrwxrwxrwx 1 root root 9 Jan 3 04:04 pci-0000:00:1f.2-scsi-0:0:0:0 -> ../../sr0 lrwxrwxrwx 1 root root 9 Jan 3 04:04 pci-0000:04:00.0-scsi-0:0:0:0 -> ../../sda lrwxrwxrwx 1 root root 10 Jan 3 04:04 pci-0000:04:00.0-scsi-0:0:0:0-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Jan 3 04:04 pci-0000:04:00.0-scsi-0:0:0:0-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Jan 3 04:04 pci-0000:04:00.0-scsi-0:0:0:0-part3 -> ../../sda3 lrwxrwxrwx 1 root root 9 Jan 3 04:04 pci-0000:0a:00.0-fc-0x5006016141e09ae7-lun-0 -> ../../sdc lrwxrwxrwx 1 root root 9 Jan 3 04:04 pci-0000:0a:00.0-fc-0x5006016841e09ae7-lun-0 -> ../../sdb How does the SAN lun 0 come from ? The OS is RHEL 6.3 |
nothing happened for fdisk and parted command
# parted /dev/sdb # parted /dev/sdc # fdisk -l /dev/sdb # fdisk -l /dev/sdc |
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Also, paste the output of "fdisk -l" For Netapp(if netapp santoolkit is installed), run "sanlun lun show" For EMC, run "powermt display dev=all" Please share the outpur. |
Hi trijit
The storage model is EMC cx3-20f. The powerpath is not installed on the server. I have read this link and it said that it's LUNZ (required by EMC). Quote:
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You can get rid of this LUNZ by setting arraycommpath to 0. But I'd say this is not a good solution at all. Because setting this value may cause powerpath not to recognize devices. Instead, you can just assign a new LUN to the host group on the ex3 side and simply change the LUN id to 0. This should overlap the LUNZ currently you are seeing. Let me know if that works. Thanks. |
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