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09-06-2005 04:10 AM
09-06-2005 04:10 AM
if only they had striped it across the first 5 disks, and then a second set of 5 disks, my task would be alot easier.
Solved! Go to Solution.
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09-06-2005 04:20 AM
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09-06-2005 04:37 AM
09-06-2005 04:37 AM
Re: Expanding a lvol striped across 10 disks
Maybe these links can be helpful for you:
http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=591709
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=941616&admit=-682735245+1126024396748+28353475
good Luck,
Alex
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09-06-2005 04:53 AM
09-06-2005 04:53 AM
Re: Expanding a lvol striped across 10 disks
You're absolutely right about the 5/5 thing.
Not only that but you can't pvmove them or mirror/reduce the volumes out.
Bummer...
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09-06-2005 05:47 AM
09-06-2005 05:47 AM
Re: Expanding a lvol striped across 10 disks
Am I understanding you correctly ? Right now, I have 10 EMC disks of approx 11.6gb each in the volume group. These 10 disks are all full. I don't need to double the size of the filesystem. I know I need to get another 10 disks to extend the volume group and lvol, but I was hoping to get away with some smaller ones. Maybe 10 new EMC disks of 5gb each.
Do I need to get 10 more disks of at least the same 11.6gb size ?
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09-06-2005 06:22 AM
09-06-2005 06:22 AM
Re: Expanding a lvol striped across 10 disks
The new disks could be smaller or larger (physically) than the existing ones. Remember that the volume group's 'max_pe' and 'max_pv' ares fixed during the volume group creation ('vgcreate'), however. Hence if you choose to add very large disks you might not be able to address all of their physical extents, thereby wasting storage. If you choose "small" disks, then you may later find that adding additional physical volumes can't be done because the volume group's 'max_pv' has been reached.
Regards!
...JRF...
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09-06-2005 06:59 AM
09-06-2005 06:59 AM
Re: Expanding a lvol striped across 10 disks
You may not have the same performance but if space is the issue and not having another 10 spindes is not a big deal then why not ?
On some symmetrix version you can expand the meta. i.e. add another hyper or two to the existing 10 member meta. I have not seen how HPUX responds to the change in disk geometry but maybe someone else has experienced.
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09-06-2005 07:22 AM
09-06-2005 07:22 AM
Re: Expanding a lvol striped across 10 disks
But you do have to have room in your VG to hold more disks. (max_pe, max_pv, etc..)
Somebody above suggested a good idea, which we do here: Create new lvols that aren't striped and just tell the Oracle DBA to put his new "oradatas" (tablespaces or tables or whatever they call them) in the new Mount Point. The DBA doesn't care about Volume Groups, just Mount Points.