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January 22nd, 2009 01:00
HP-UX with LVM and VxVM switch migration
Hi guys,
I have a HP-UX 11.23 server with LVM VGs and VxVM 4.1 DGs.
PowerPath 5.0.0 fully licensed.
It has access to more than 130 luns on a DMX3000 through 2 switches. MDS9509 and McData ED-140M.
I need to migrate both the HBAs of the server and the FAs it sees to new switches (MDS).
Since the new switches cannot have the same DomainID of the old switches (already configured), the FCID's of the server and the DMX will change, causing the /dev/ctd's to change as well.
I know I can move one path, reconfigure the LVM with the new ctds by doing 'vgextend' and 'vgreduce'. And do the same later for the other path.
However, I do not know how will the VxVM behave. Since I only see one address (ctd), how can do the re-configuration of the DGs?
Will the PowerPath automatically protect me during this? And how will the server behave after a reboot?
I want to do this migration as smooth as possible and without any downtime.
So please help me guys
Thanks in advance,
Maxim
I have a HP-UX 11.23 server with LVM VGs and VxVM 4.1 DGs.
PowerPath 5.0.0 fully licensed.
It has access to more than 130 luns on a DMX3000 through 2 switches. MDS9509 and McData ED-140M.
I need to migrate both the HBAs of the server and the FAs it sees to new switches (MDS).
Since the new switches cannot have the same DomainID of the old switches (already configured), the FCID's of the server and the DMX will change, causing the /dev/ctd's to change as well.
I know I can move one path, reconfigure the LVM with the new ctds by doing 'vgextend' and 'vgreduce'. And do the same later for the other path.
However, I do not know how will the VxVM behave. Since I only see one address (ctd), how can do the re-configuration of the DGs?
Will the PowerPath automatically protect me during this? And how will the server behave after a reboot?
I want to do this migration as smooth as possible and without any downtime.
So please help me guys
Thanks in advance,
Maxim
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SKT2
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January 22nd, 2009 11:00
MaximUnited
111 Posts
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January 23rd, 2009 03:00
I have to move both nodes.
Does it make a difference?
SKT2
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January 24th, 2009 11:00
MaximUnited
111 Posts
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January 24th, 2009 23:00
Can someone confirm that?
And I need an answer about the VxVM please...
Thanks
xe2sdc
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January 25th, 2009 08:00
I don't have details regarding VxVM ... but as long as you have to change the cluster lock device, you need to shutdown the cluster.
dynamox
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January 25th, 2009 08:00
i know that if you change cluster lock disk, you have to re-compile the cluster, but i remember you mentioned one time that you can change cluster lock pv without recompiling the cluster (can't find that thread). It's still an off-line process but at least no messy cluster recompiling ?
SKT2
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January 25th, 2009 12:00
dynamox
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January 26th, 2009 16:00
MaximUnited
111 Posts
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January 27th, 2009 00:00
How do I do that? I'm not that familiar with all system tricks...
Guys, I have to do the migrations for Solaris hosts too.
I'm pretty sure all filesystems are pointing to the psedo devices (emcpower1c, etc).
So that migration will go smoothly? I need to keep something in mind?
THX.