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tapas_mishra
September 28th, 2010, 06:34 AM
Hi,
I am using Lucid 10.04 64 bit.
I had created some lvms in some locations on my server.
Which I am not able to recall.
pvdsiplay
lvdisplay


--- Physical volume ---
PV Name /dev/sda6
VG Name nintendo
PV Size 441.55 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 113035
Free PE 10635
Allocated PE 102400
PV UUID UMmBxP-upFM-H3S4-neHF-XYyo-gs3Q-rZsWMx


--- Logical volume ---
LV Name /dev/nintendo/lvm1
VG Name nintendo
LV UUID pM9IVB-UorL-9CtJ-qRp5-wRsX-KEKm-ws5nvc
LV Write Access read/write
LV Status available
# open 1
LV Size 100.00 GiB
Current LE 25600
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 251:0

--- Logical volume ---
LV Name /dev/nintendo/lvm2
VG Name nintendo
LV UUID cVyyOe-QbdC-R2Ys-xGdv-I3GB-m6Da-fFjFFd
LV Write Access read/write
LV Status available
# open 1
LV Size 150.00 GiB

Current LE 38400
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 251:1

--- Logical volume ---
LV Name /dev/nintendo/lvm3
VG Name nintendo
LV UUID fppbX8-bJTZ-is2U-qMjk-VpBT-3h7n-yCF4qv
LV Write Access read/write
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 251:2

--- Logical volume ---
LV Name /dev/nintendo/lvm4
VG Name nintendo
LV UUID y3I7sC-S2vn-huo0-CaGu-W7cF-duIR-B8fKWP
LV Write Access read/write
LV Status available
# open 1
LV Size 100.00 GiB
Current LE 25600
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 251:3



but when I go to directory
/dev/nintendo I see the files

total 0
lrwxrwxrwx 1 root root 28 2010-08-27 10:58 lvm4 -> ../mapper/nintendo-lvm4
lrwxrwxrwx 1 root root 33 2010-09-14 14:51 lvm3 -> ../mapper/nintendo-lvm3
lrwxrwxrwx 1 root root 31 2010-08-27 10:58 lvm2 -> ../mapper/nintendo-lvm2
lrwxrwxrwx 1 root root 33 2010-08-27 10:58 lvm1 -> ../mapper/nintendo-lvm1

of only zero bytes.

So how do I take backup of these and how do I find out what will be
the size of hard disk required to take backups.
If an LVM image is 100Gb so do I need 100Gb space in my hard disk to
take backup.
Or how is the process of backup done when I have LVM based images?