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05-17-2004 10:07 PM
05-17-2004 10:07 PM
who know how to active sharable vg on two nodes without install cluster on hpux 11i
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05-17-2004 10:49 PM
05-17-2004 10:49 PM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
However, it doesn't actually need to be sharable for some kind of failover. The vgexport and vgimport still work. So you could create a volume group on a server, "vgexport -p" it and then import it on the second server. If you then make sure that it is not activated on the second server (by not having an entry in /etc/lvmtab) then you have some means to fail over. I.E when the first server isn't available, just activate it on the second one. I imagine this would all work.
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05-17-2004 10:57 PM - last edited on 09-16-2024 02:18 AM by support_s
05-17-2004 10:57 PM - last edited on 09-16-2024 02:18 AM by support_s
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
For true share , one has to use SLVM ( shared LVM ) that comes with OPS clusters or Service Guard extensions for RAC .
This feature migt also be available in near future when HP completes prting tru cluster from tru64 into HPUX .
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05-17-2004 11:04 PM
05-17-2004 11:04 PM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
Shared filesystems except via NFS.
Also, keep in mind that if you use Mark's solution to vgimport/vgexport, the disks when not in use by the one system will look available via SAM and other tools (since they are physically attached but not used on that system) -- be careful not to overwrite the data on those disks from the "other" system where they are not in use.
Best regards,
Kent M. Ostby
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05-18-2004 12:18 AM
05-18-2004 12:18 AM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
cmlvmd- monitors the activation of a VG
across the nodes. Without cmlvmd running
you cannot run vgchange -s y.
If you activate the VG is both nodes
without MCSG & vgchange -s y,
you would possibly endup with currupt file
system.
TT
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05-18-2004 01:30 AM
05-18-2004 01:30 AM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
Rgds...Geoff
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05-18-2004 01:49 AM
05-18-2004 01:49 AM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
If you have imported these volume groups on the secondary host, but don't activate them, there is still a risk in the event of a reboot. If the secondary host reboots and you have not modified the /etc/lvmrc file to not activate these 'shared volume groups' they will be activated on reboot.
David
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05-21-2004 04:09 PM
05-21-2004 04:09 PM
Re: who know how to active sharable vg on two nodes without install cluster on hpux 11i
You must have SG and SGeRAC installed to get
shared VG (SLVM) capability. As for Oracle 10g RAC documentation, you can get it from http://otn.oracle.com. You should have SG/SGeRAC installed and configured before you start the 10g RAC installation. However, this is first release that Oracle introduces CRS. I have heard there are many quality issues. Good luck.