[linux-lvm] Removing a very old physical drive

[Ray Morris]

    I think you want "pvmove".  It moves LVs off of a physical
volume onto other ones in the same volume group.

> My problem now is that the new drive is fully allocated and
> so this route won't work. There is plenty of free space on
> the new drive

    The drive is fully allocated and it has plenty of free
space?  Do you mean that the drive is part of the volume
group, but does not yet have all it' sectors full?
--
Ray Morris
support at bettercgi.com

Strongbox - The next generation in site security:
http://www.bettercgi.com/strongbox/

Throttlebox - Intelligent Bandwidth Control
http://www.bettercgi.com/throttlebox/

Strongbox / Throttlebox affiliate program:
http://www.bettercgi.com/affiliates/user/register.php


On 10/26/2009 03:59:58 AM, Nicholas Robinson wrote:
> Hi
> 
> I've been using lvm for quite a few years, but only occasionally when  
> I
> need to add/remove new drives. So, my knowledge is limited and a bit
> rusty! I should have removed the old drive when I added a new one a
> couple of years ago, but for reasons I cannot remember, I didn't.
> 
> I only know how to remove a drive when there is a new drive about to
> move the stuff onto. My problem now is that the new drive is fully
> allocated and so this route won't work. There is plenty of free space  
> on
> the new drive so it should be possible to move everything that might  
> be
> on the old physical drive and then remove it from the lvg. I just  
> can't
> work out how. The HOWTOs and threads don't seem to cover this starting
> point.
> 
> My questions are:
> 
> 1. Can I do move the data off the old drive to the new drive without
> adding another new drive?
> 
> 2. I don't understand the output from pvdisplay - why is it telling me
> about /dev/sda1 at the bottom when this partition is a boot partition
> and tiny?
> 
> 3. Where has the LogVol01 come from and what is it doing? Can I remove
> it?
> 
> 4. Can I rename the volgroup/logvols to the same pattern used by new
> installations? e.g. vg_hostname and lv_root, etc.
> 
> If you've read this far, then thank you! I hope the following extracts
> are sufficient.
> 
> Best Wishes
> 
> Nick
> 
> # pvdisplay
>   --- Physical volume ---
>   PV Name               /dev/sdb2
>   VG Name               VolGroup00
>   PV Size               27.76 GB / not usable 13.73 MB
>   Allocatable           yes
>   PE Size (KByte)       32768
>   Total PE              888
>   Free PE               30
>   Allocated PE          858
>   PV UUID               V7XQmw-wMkv-fA4H-UUzn-d4CR-sfju-jHYjNZ
> 
>   --- Physical volume ---
>   PV Name               /dev/sda2
>   VG Name               VolGroup00
>   PV Size               315.00 GB / not usable 31.81 MB
>   Allocatable           yes
>   PE Size (KByte)       32768
>   Total PE              10079
>   Free PE               987
>   Allocated PE          9092
>   PV UUID               tXBnAO-0D0U-yLvg-XhaA-vEw3-Niz7-p23dAt
> 
>   "/dev/sda1" is a new physical volume of "298.09 GB"
>   --- NEW Physical volume ---
>   PV Name               /dev/sda1
>   VG Name
>   PV Size               298.09 GB
>   Allocatable           NO
>   PE Size (KByte)       0
>   Total PE              0
>   Free PE               0
>   Allocated PE          0
>   PV UUID               T1XNow-VO83-JVW5-8NBh-1fiF-VzWT-m5mj2P
> 
> # fdisk -l /dev/sda
> 
> Disk /dev/sda: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x30b7d346
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1           6       48163+  83  Linux
> /dev/sda2               7       38913   312520477+  83  Linux
> 
> # lvdisplay
>   --- Logical volume ---
>   LV Name                /dev/VolGroup00/LogVol00
>   VG Name                VolGroup00
>   LV UUID                LPxYrN-E62m-L8uh-Ms0O-vZNI-EWM6-GlBD4E
>   LV Write Access        read/write
>   LV Status              available
>   # open                 1
>   LV Size                310.00 GB
>   Current LE             9920
>   Segments               3
>   Allocation             inherit
>   Read ahead sectors     auto
>   - currently set to     256
>   Block device           253:0
> 
>   --- Logical volume ---
>   LV Name                /dev/VolGroup00/LogVol01
>   VG Name                VolGroup00
>   LV UUID                u3rWh0-NHxf-pn3F-o0Du-Mbnw-LG5V-2l2t3T
>   LV Write Access        read/write
>   LV Status              available
>   # open                 1
>   LV Size                960.00 MB
>   Current LE             30
>   Segments               1
>   Allocation             inherit
>   Read ahead sectors     auto
>   - currently set to     256
>   Block device           253:1
> 
> # df
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/mapper/VolGroup00-LogVol00
>                      314908972 145080044 153584540  49% /
> /dev/sdb1               198129     13938    173962   8% /boot
> tmpfs                   239080         0    239080   0% /dev/shm
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
>