How can i attach EMC Disk on Redhat Linux
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From: Sangsik,Yun on 22 Feb 2010 00:28 I'm going to attach EMC Disk on RedHat linux with not use EMC powerpath(EMC Support Mulipath Software). HBA driver was installed. The LUN assign to host at EMC storage and then i don't know about how can i recognize on RedHat linux please, help me ----------------------------------------------------------------------------------------------------------------------- [root(a)linux /]# fdisk -l Disk /dev/sda: 18.1 GB, 18113808896 bytes 64 heads, 32 sectors/track, 17274 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 100 102384 83 Linux /dev/sda2 101 17274 17586176 8e Linux LVM [root(a)linux /]#
From: Henrik Carlqvist on 22 Feb 2010 16:55 "Sangsik,Yun" <wildgru(a)gmail.com> wrote: > I'm going to attach EMC Disk on RedHat linux with not use EMC > powerpath(EMC Support Mulipath Software). In my experience avoiding powerpath might be a good idea unless you have hardware for and need the redunancy of multipath. > HBA driver was installed. Good, does dmesg show anything which relates to the HBA? > The LUN assign to host at EMC storage I'm not very familiar with RedHat, but in Slackware you will have to make sure that an extra file, /etc/rc.d/rc.scanluns is executable for the system to detect different luns. Once detected you will probably also find out about disks and partitions in dmesg. > and then i don't know about how can i recognize on RedHat linux > > please, help me > ----------------------------------------------------------------------- > [root(a)linux /]# fdisk -l > > Disk /dev/sda: 18.1 GB, 18113808896 bytes 64 heads, 32 sectors/track, > 17274 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes > > Device Boot Start End Blocks Id System > /dev/sda1 * 1 100 102384 83 Linux > /dev/sda2 101 17274 17586176 8e Linux LVM > [root(a)linux /]# I guess that /dev/sda is your system disk? If so your system has not detected your EMC disk. First of all we must make sure that your HBA is found, please post the output from the following commands: lspci lsmod dmesg regards Henrik -- The address in the header is only to prevent spam. My real address is: hc3(at)poolhem.se Examples of addresses which go to spammers: root(a)localhost postmaster(a)localhost
From: Zebee Johnstone on 22 Feb 2010 20:12
In comp.os.linux.hardware on Mon, 22 Feb 2010 22:55:22 +0100 Henrik Carlqvist <Henrik.Carlqvist(a)deadspam.com> wrote: > > First of all we must make sure that your HBA is found, please post the > output from the following commands: > Theoretically RH 5 can find SAN LUNs without a reboot. If it doesn't... then a reboot's worth a try! Also, check the card manufacturer's site for utils, Qlogic and Emulex/LPFC have utlities that search for LUNs. EMC also have a prog called inquire which can find LUNs. Once you have the LUNs, you then do multipathing, see http://kbase.redhat.com/ and search on multipath for lots of useful info. Zebee |