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05-24-2007 02:13 AM
05-24-2007 02:13 AM
Hi All,
I would be having a 3 node cluster consisting of 2 nPars (nodeA and nodeB) from one rp7420 and 1 nPar (nodeC) from another rp7420.
nodeC is the local High Available partition for nodeA and nodeB using Service Guard cluster.[ Thus nodeA can failover onto nodeC and/or nodeB can failover onto nodeC ]
There would be 2 x 2 port HBA cards in all the 3 nodes connected to XP10000 storage array via SAN.
How do I ensure before presenting the storage LUNs (from XP10000 array) to the 3 nodes that all the disk devices common to (nodeA and nodeC) & to (nodeB and nodeC) are seen as same device names (e.g. /dev/dsk/c10t1d0) on the corresponding nodes ?
I have seen a method using ioconfig , ioinit but that was for SCSI.
What is the procedure to synchronise the disk devices names in case of Fibre channel connectivity?
Thanks and regards,
Ninad
I would be having a 3 node cluster consisting of 2 nPars (nodeA and nodeB) from one rp7420 and 1 nPar (nodeC) from another rp7420.
nodeC is the local High Available partition for nodeA and nodeB using Service Guard cluster.[ Thus nodeA can failover onto nodeC and/or nodeB can failover onto nodeC ]
There would be 2 x 2 port HBA cards in all the 3 nodes connected to XP10000 storage array via SAN.
How do I ensure before presenting the storage LUNs (from XP10000 array) to the 3 nodes that all the disk devices common to (nodeA and nodeC) & to (nodeB and nodeC) are seen as same device names (e.g. /dev/dsk/c10t1d0) on the corresponding nodes ?
I have seen a method using ioconfig , ioinit but that was for SCSI.
What is the procedure to synchronise the disk devices names in case of Fibre channel connectivity?
Thanks and regards,
Ninad
Solved! Go to Solution.
3 REPLIES 3
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05-24-2007 02:17 AM
05-24-2007 02:17 AM
Re: Make device names same on cluster nodes
i guess ur multipathing sw should hv that capability of aliasing to make a common device path for all servers.
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05-24-2007 02:19 AM
05-24-2007 02:19 AM
Solution
I honestly wouldn't worry about it.
The device names DO NOT have to be the same for all 3 machines.
Just make sure that all 3 machines have access to the disks/LUNs. Create your VGs on one machine, then export the configuration. When you export make sure you use the '-s' switch.
# vgexport -m /var/tmp/vg.map -v -p -s /dev/vg??
Then when you import, you use the '-s' as well.
# vgimport -m /var/tmp/vg.map -v -s /dev/vg??
This will insure that the appropriate drives are imported, regardless of their device file names.
This is by far the easiest way.
The device names DO NOT have to be the same for all 3 machines.
Just make sure that all 3 machines have access to the disks/LUNs. Create your VGs on one machine, then export the configuration. When you export make sure you use the '-s' switch.
# vgexport -m /var/tmp/vg.map -v -p -s /dev/vg??
Then when you import, you use the '-s' as well.
# vgimport -m /var/tmp/vg.map -v -s /dev/vg??
This will insure that the appropriate drives are imported, regardless of their device file names.
This is by far the easiest way.
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05-24-2007 02:30 AM
05-24-2007 02:30 AM
Re: Make device names same on cluster nodes
Ninad,
With ioinit you can also modify the order of you FC HBA, lan cards.
Try it first on a test machine.
With ioinit you can also modify the order of you FC HBA, lan cards.
Try it first on a test machine.
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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