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тАО01-24-2011 09:57 PM
тАО01-24-2011 09:57 PM
As per my knowledge vgid should not be same on the nodes in cluster.If its same DG will think VG on all 6the nodes as same and will throw error.
Please correct me ,if wrong
Regards
himacs
Solved! Go to Solution.
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тАО01-24-2011 10:03 PM
тАО01-24-2011 10:03 PM
SolutionThis is not correct. The VGID is a unique identifier for the VG and belongs to the VG, not to a server.
Hope this helps!
Regards
Torsten.
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тАО01-24-2011 10:04 PM
тАО01-24-2011 10:04 PM
Re: VGID in cluster
thats why they are a group, doesn`t matter it`s a clustered or non clustured VG ,VGID is
unique for the VG where ever it`s imported.
It lies on disk / luns no where else so it`s
same every where .We are using the same disks
on various cluster nodes.
Thanks
Manix
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тАО01-24-2011 10:35 PM
тАО01-24-2011 10:35 PM
Re: VGID in cluster
Thanks for the response.
Yes.. my mistake.. i asked a big blunder Q :).
OK.. now i have another doubt.
<
If VG is created in serverA and when package is moved to serverB and now serverB access the VG ,whoms VGID holds info of serverA.
Please suggest.
Regards
himacs
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тАО01-24-2011 11:04 PM
тАО01-24-2011 11:04 PM
Re: VGID in cluster
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО01-24-2011 11:07 PM
тАО01-24-2011 11:07 PM
Re: VGID in cluster
Its created at the point of VG creation & sticks in the VGRA region of the luns like PVRA do ,read the disk structure.
One its checked on the disk its remains same where ever that disk can be imported.
Thanks
Manix
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тАО01-24-2011 11:07 PM
тАО01-24-2011 11:07 PM
Re: VGID in cluster
> If VG is created in serverA and when package is moved to serverB and now serverB access the VG ,whoms VGID holds info of serverA.
Ok, if you are talking about package failover and in terms of a "package", part of the entity of package are disk resources which at the end of the day are volume groups. During the initial formation of a cluster a vgexport/vgimport is done right and this involves the creation of a "map file". Even if the package has failed over, the VGID is still present in your "map file", since you specifically asked who holds the "info".
Regards
Ismail Azad
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тАО01-24-2011 11:13 PM
тАО01-24-2011 11:13 PM
Re: VGID in cluster
Thanks
Manix
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тАО01-25-2011 12:53 AM - last edited on тАО11-10-2011 07:48 AM by Kevin_Paul
тАО01-25-2011 12:53 AM - last edited on тАО11-10-2011 07:48 AM by Kevin_Paul
Re: VGID in cluster
HI Admins,
Yup.. its r8.
Actually i was supposed to ask abt vg00 ,not about shared disks.
i understand that if vgid of vg00 are unique on nodes under cluster, we have to change the vgid of any one.Otherwise cluster commands cmquerycl/cmcheckconf will not be successful.
http://h30499.www3.hp.com/t5/Serviceguard/cmgetconf-error/m-p/3350015#M8760
Thanks for your help.
Regards
himacs
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тАО01-25-2011 05:30 AM
тАО01-25-2011 05:30 AM
Re: VGID in cluster
I guess you meant _not_ unique?
In other words: if each node in a cluster has a different VGID for vg00, it is OK.
If two or more nodes have the same VGID (i.e. the nodes have been cloned using dd or similar), Serviceguard will assume they are the same physical VG, and may display warnings and errors because they aren't in fact the same.
MK