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
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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
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