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August 2006

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Subject:
Removing a hard disk from an LVM2 configuration
From:
Ioannis Vranos <[log in to unmask]>
Reply To:
Ioannis Vranos <[log in to unmask]>
Date:
Thu, 31 Aug 2006 12:48:25 +0300
Content-Type:
text/plain
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text/plain (31 lines) 
I have SL 4.3 x86 installed on two hard disks, because during installation it created an 
LVM2 configuration (VolGroup00 with /dev/hdc and /dev/hdf). I want to remove dev/hdf.

I checked Logical Volume Management and when I tried to "Remove Volume from Volume Group" 
it gave the message "Volume Group VolGroup00 does not have enough space to move the data 
stored on /dev/hdf1. A possible solution would be to add an additional Physical Volume to 
the Volume Group"


When I tried "Migrate Selected Extents From Volume", it gave the message "There are not 
enough free extents to perform the necessary migration. Adding more physical volumes would 
solve the problem".


However I have enough free space:


[root@localhost download]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                        99G   11G   84G  12% /
/dev/hdc1              99M   13M   82M  13% /boot
none                  506M     0  506M   0% /dev/shm
[root@localhost download]#



The first hard disk is 80 GB one and the second I want to remove 30 GB one. Is there any 
way to resize VolGroup00 or something, so as to remove the /dev/hdf? Can the live cd help 
in this case?

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