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тАО12-22-2004 07:26 PM
тАО12-22-2004 07:26 PM
But i was confused by the HP mannual and Oracle's Step by step install instruction.
In HP commands manual:
When creating LUN on disk array, use "arraycfg", but that command limit you with only 8 LUN per array.
While in Oracle's Step by step guide, it use the following command sequence (also on a disk array):
pvcreate -f /dev/rdsk/c0t12d0
mkdir /dev/vg_ops
mknod /dev/vg_ops/group c 64 0x060000
vgcreate /dev/vg_ops /dev/dsk/c0t12d0
vgchange -a y vg_ops
then following with a lot of lvcreate commands:
lvcreate -n P901_control_01.ctl -L 110 /dev/vg_ops...
in this way, it can create at maxium 255 logical volume on a disk array.
So, which one is correct?!
Solved! Go to Solution.
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тАО12-22-2004 08:52 PM
тАО12-22-2004 08:52 PM
Solutionboth are correct.
you should not confuse LUNs (logical drives on the array) with LVM logical volumes (lvols).
The 12H lets you create 8 LUNs.
run
ioscan -fnCdisk
to see the HW path
run
insf -e
to create device files like /dev/dsk/c#t#d0 (LUN0) ..d1 (LUN1) etc. for those HW path.
the LUNs are like disks (if you did not have an array but a JBOD with individual disks.
So from here on the rest is LVM:
run
pvcreate /dev/rdsk/c#t#d0
to create an LVM header on the LUN
mkdir /dev/vg....
etc etc.
Regards,
Bernhard
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тАО12-22-2004 08:58 PM
тАО12-22-2004 08:58 PM
Re: Confusd with LVM commands and arraycfg command.
one additional hint: Use SAM to create new LUNs on the 12H, this is the easiest way and it will also create device files as necessary. If I remember correctly SAM would also show you how much space remains allocatable on the 12H for additional LUNs. But note that for perfomance it is better not to fully use the available space.
Regards,
Bernhard
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тАО12-23-2004 03:39 AM
тАО12-23-2004 03:39 AM
Re: Confusd with LVM commands and arraycfg command.
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тАО12-23-2004 02:39 PM
тАО12-23-2004 02:39 PM
Re: Confusd with LVM commands and arraycfg command.
Regards
Larry