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тАО12-14-2010 01:23 AM
тАО12-14-2010 01:23 AM
Quorum Disk Multipath
Hi,
We are planning to cluster two RedHat linux systems which are connected to EVA8000. Each Lun which is present from EVA8000 is having 8 Path in the RedHat Server.
I want to specify only the virtual path of this device for lock lun. So that it will automatically do a failover and loadbalancing if some thing is happening to the FC Link.
How can achieve this?
Serviceguard version is serviceguard-A.11.18.00-0.rhel4.
Manoj K
We are planning to cluster two RedHat linux systems which are connected to EVA8000. Each Lun which is present from EVA8000 is having 8 Path in the RedHat Server.
I want to specify only the virtual path of this device for lock lun. So that it will automatically do a failover and loadbalancing if some thing is happening to the FC Link.
How can achieve this?
Serviceguard version is serviceguard-A.11.18.00-0.rhel4.
Manoj K
Thanks and Regards,
Manoj K
Manoj K
2 REPLIES 2
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тАО12-14-2010 09:51 AM
тАО12-14-2010 09:51 AM
Re: Quorum Disk Multipath
Use the correct device-mapper multipath configuration. Search, download and install HP Device Mapper Multipath apt for the version of Linux you have.
Once installed and correctly running, each EVA8 VDISK shall have a /dev/mpath/mpathNN entry whose individual disk path/members and VDISK WWID you can display via: "multipath -ll"
If you want to give your multipathed device (aka your virtual path/device) a friendlier name or even to be automagically owned by oracle:dba -- all without writing UDEV scripts. Simply add an entry in your /etc/multipath.conf's multipaths section like:
multipath {
wwid 3600508b40006a5d50000f00001160000
alias EVA8_LUN01
mode 0644
uid 501
gid 501
}
Then do multipath -v3 and you will now have a friendly, oracle owned /dev/mapper/EVA8_LUN01 that you may partition or use anyway you like.
Cheers!
Once installed and correctly running, each EVA8 VDISK shall have a /dev/mpath/mpathNN entry whose individual disk path/members and VDISK WWID you can display via: "multipath -ll"
If you want to give your multipathed device (aka your virtual path/device) a friendlier name or even to be automagically owned by oracle:dba -- all without writing UDEV scripts. Simply add an entry in your /etc/multipath.conf's multipaths section like:
multipath {
wwid 3600508b40006a5d50000f00001160000
alias EVA8_LUN01
mode 0644
uid 501
gid 501
}
Then do multipath -v3 and you will now have a friendly, oracle owned /dev/mapper/EVA8_LUN01 that you may partition or use anyway you like.
Cheers!
Hakuna Matata.
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тАО12-14-2010 10:11 AM
тАО12-14-2010 10:11 AM
Re: Quorum Disk Multipath
Serviceguard version is serviceguard-A.11.18.00-0.rhel4.
Hmmm -- so RHEL 4.8? I am not suer if there is HPDM for that release...
Why not just go with RHEL 5 (5.5 specially) and just use RHCS/GFS solution instead of the sunset product ServiceGuard. ServiceGuard for Linux ended sales like 2+ years ago as the built-in (for Advanced Platform RHEL) does a good enough job anyway.
Hakuna Matata.
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