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тАО07-17-2000 07:58 AM
тАО07-17-2000 07:58 AM
Disk size Sam vs pvdisplay
If i go into sam
Disks and file systems
Disk devices
device 10/0.1.0 c4t1d0 shows phsical Mbytes of 8680
but when i use the command
pvdisplay -v /dev/dsk/c4t1d0
it gives me a PE of 1085 x4 = 4340
lvdisplay tells me its not mirrored and gives me the smaller size as well
so why does sam report the drive being twice as big? and which is correct?
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тАО07-17-2000 08:17 AM
тАО07-17-2000 08:17 AM
Re: Disk size Sam vs pvdisplay
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тАО07-17-2000 08:20 AM
тАО07-17-2000 08:20 AM
Re: Disk size Sam vs pvdisplay
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тАО07-17-2000 08:33 AM
тАО07-17-2000 08:33 AM
Re: Disk size Sam vs pvdisplay
the drive has a 9.1gb sticker on it
so ive been asumming that sam is correct
problem is i have been wanting to mirror this drive
it is posible this drive has been replaced
its in a cage with 2 4.0gb drives and a 4.3 that shows as 4.0 on sam and pvdisplay
confusing
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тАО07-17-2000 08:57 AM
тАО07-17-2000 08:57 AM
Re: Disk size Sam vs pvdisplay
Per chance do you have alternate links? If so, are your SAM patches current?
...JRF...
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тАО07-17-2000 08:58 AM
тАО07-17-2000 08:58 AM
Re: Disk size Sam vs pvdisplay
Patch Description: s700_800 10.20 LVM commands cumulative patch. Patch Dependencies: s700: 10.20: PHKL_13247 s800: 10.20: PHKL_13248.
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тАО07-17-2000 08:59 AM
тАО07-17-2000 08:59 AM
Re: Disk size Sam vs pvdisplay
I think your replaced a 4.3Gbyte disk with this one, and restored the 'old' LVM information to this disk.
A diskinfo/dev/rdsk/c?. should show you the 'right' size of this disk. I'm afraid you have to do a pvcreate -f on this disk to use the whole size of it.
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тАО07-17-2000 10:19 AM
тАО07-17-2000 10:19 AM
Re: Disk size Sam vs pvdisplay
i guess i need to start chekcing patches
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тАО07-17-2000 10:50 AM
тАО07-17-2000 10:50 AM
Re: Disk size Sam vs pvdisplay
The only way to use the full 9GB of that drive is to rebuild the volume group. Backup your data, delete the volume group and recreate it and your logical volumes. Then restore your data.
I always like to set the max pe high when creating a volume group. Next time you want to add a disk it might be an 18GB or 36GB or who knows what's coming next. Do not set artificial limits too low.
Check your max pe by doing a vgdisplay on the volume group and I think you will see your limit.
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тАО07-17-2000 12:37 PM
тАО07-17-2000 12:37 PM
Re: Disk size Sam vs pvdisplay
Looks like Dave hit the nail on the head. It looks like the original volume-group was created with 4.3gb disk/drive. The previous SA added a 9.1gb disk/drive to the volume group, by doing this the new 9.1gb drive was limited to the max_pe of the original drive. Which means you will only get to use 4.3gb of the 9.1gb of space.
To get around this you could backup the data in the volume group. recreate the VG using the 9.1gb drive as the primary drive.
Good job Dave.