Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003 iostat (1) iostat (1) interval Display successive lines which are summaries of the last interval seconds. The first line reported is for the time since a reboot and each subsequent line is for the last interval only. Count Repeat the statistics count times. A successful configuration of the HP-UX iSCSI initiator includes having an understanding of the HP. # /usr/sbin/ioscan -NH 64000 H/W Path Class Description 64000/0x0 usbmsvbus USB Mass Storage 64000/0x0/0x0 escsictlr USB Mass Storage Virt Ctlr 64000/0x0/0x0.0x0 tgtpath usb target served by usbmsscsi driver 64000/0x0/0x0.0x0.0x0.
Sometimes we need more space on a server. To get more space we create new virtual LUNs from our storage and present that LUN on the server to get the required space.
If you have added a new LUN to a server then you need to see that LUN or device on that machine. In HP-UX there is no need to reboot the machine or server.
You can easily resacn the LUNs/disks using the ioscan command and this is enough to detect the new devices.
ioscan output before addding the new LUN
| # ioscan -fnNC disk Class I H/W Path Driver S/W State H/W Type Description disk 3 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP Virtual LvDisk /dev/disk/disk3 /dev/disk/disk3_p2 /dev/rdisk/disk3 /dev/rdisk/disk3_p2 /dev/disk/disk3_p1 /dev/disk/disk3_p3 /dev/rdisk/disk3_p1 /dev/rdisk/disk3_p3 disk 4 64000/0xfa00/0x7 esdisk CLAIMED DEVICE 3PARdataVV /dev/disk/disk4 /dev/rdisk/disk4 disk 5 64000/0xfa00/0x8 esdisk CLAIMED DEVICE 3PARdataVV /dev/disk/disk5 /dev/rdisk/disk5 |
I have added a new LUN to this machine from 3PAR SAN storage. Now i want to see that LUN added or not to this machine, i executed the below command which rescaned all the available disks and list them. Newly added disk is /dev/rdisk/disk17.
ioscan output after addding the new LUN
| # ioscan -fnNC disk Class I H/W Path Driver S/W State H/W Type Description disk 3 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP Virtual LvDisk /dev/disk/disk3 /dev/disk/disk3_p2 /dev/rdisk/disk3 /dev/rdisk/disk3_p2 /dev/disk/disk3_p1 /dev/disk/disk3_p3 /dev/rdisk/disk3_p1 /dev/rdisk/disk3_p3 disk 4 64000/0xfa00/0x7 esdisk CLAIMED DEVICE 3PARdataVV /dev/disk/disk4 /dev/rdisk/disk4 disk 5 64000/0xfa00/0x8 esdisk CLAIMED DEVICE 3PARdataVV /dev/disk/disk5 /dev/rdisk/disk5 disk 17 64000/0xfa00/0x2b esdisk CLAIMED DEVICE 3PARdataVV /dev/disk/disk17 /dev/rdisk/disk17 |
Hp Ux Ioscan Command
If this is not working, suspect configuration like presentation on the storage device or zoning on the switch also check your fiber cable connection to the server.
