[linux-lvm] moving LVMs to another machine
Albert Everett
aeeverett at ualr.edu
Fri Jan 14 19:25:24 UTC 2011
This is my first time trying to do this, so please forgive me if what I'm asking is trivial. I'm anxious not to loose data.
I have moved a Dell MD3000 with an MD1000 attached from one CentOS 4.5 x86_64 machine to another. I've installed Dell's drivers on the second machine and I see output below.
/dev/sdb and sdc are on the MD3000; /dev/sdd, sde and sdf are on the MD1000. Filesystem on both is ext3, and I only used LVM to concatenate <2TB volumes because the MD3000 firmware required it at the time.
I did not actively deactivate any volume groups or logical volumes before I made this move.
Q: What are my next steps after lvscan to bring the two logical volumes back online? OS, etc are all on /dev/sda; the logical volumes just have extra stuff.
Q: Am I right to assume that once lv0 and lv1 show as active, all I need to do is mount them somewhere, and that the filesystems they contain should be intact? I had no disk or controller failures that I know of.
Albert
[root at login-0-0 ~]# fdisk -l
Disk /dev/sda: 749.6 GB, 749606010880 bytes
255 heads, 63 sectors/track, 91134 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 3060 24579418+ 83 Linux
/dev/sda2 3061 6120 24579450 83 Linux
/dev/sda3 6121 8160 16386300 82 Linux swap
/dev/sda4 8161 91134 666488655 5 Extended
/dev/sda5 8161 91134 666488623+ 83 Linux
Disk /dev/sdb: 1796.7 GB, 1796776919040 bytes
255 heads, 63 sectors/track, 218445 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 218445 1754659431 8e Linux LVM
Disk /dev/sdc: 1796.7 GB, 1796776919040 bytes
255 heads, 63 sectors/track, 218445 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 218445 1754659431 8e Linux LVM
Disk /dev/sdd: 2186.1 GB, 2186136256512 bytes
255 heads, 63 sectors/track, 265782 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdd1 1 265782 2134893883+ 8e Linux LVM
Disk /dev/sde: 2186.1 GB, 2186136256512 bytes
255 heads, 63 sectors/track, 265782 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sde1 1 265782 2134893883+ 8e Linux LVM
Disk /dev/sdf: 820.7 GB, 820745076736 bytes
255 heads, 63 sectors/track, 99783 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdf1 1 99783 801506916 8e Linux LVM
[root at login-0-0 ~]# pvscan
PV /dev/sdd1 VG vg1 lvm2 [1.99 TB / 0 free]
PV /dev/sde1 VG vg1 lvm2 [1.99 TB / 0 free]
PV /dev/sdf1 VG vg1 lvm2 [764.38 GB / 2.75 GB free]
PV /dev/sdb1 VG vg0 lvm2 [1.63 TB / 0 free]
PV /dev/sdc1 VG vg0 lvm2 [1.63 TB / 0 free]
Total: 5 [7.99 TB] / in use: 5 [7.99 TB] / in no VG: 0 [0 ]
[root at login-0-0 ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg1" using metadata type lvm2
Found volume group "vg0" using metadata type lvm2
[root at login-0-0 ~]# lvscan
inactive '/dev/vg1/lv1' [4.72 TB] inherit
inactive '/dev/vg0/lv0' [3.27 TB] inherit
[root at login-0-0 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sdd1
VG Name vg1
PV Size 8192.00 EB / not usable 8192.00 EB
Allocatable yes (but full)
PE Size (KByte) 131072
Total PE 16287
Free PE 0
Allocated PE 16287
PV UUID VSTyo3-r8rE-5lym-G6F7-683r-fdZm-Urm5af
--- Physical volume ---
PV Name /dev/sde1
VG Name vg1
PV Size 8192.00 EB / not usable 8192.00 EB
Allocatable yes (but full)
PE Size (KByte) 131072
Total PE 16287
Free PE 0
Allocated PE 16287
PV UUID eXd2Ee-L55A-bO43-ucXR-GnGM-n4fo-k0vOXP
--- Physical volume ---
PV Name /dev/sdf1
VG Name vg1
PV Size 764.38 GB / not usable 1.60 MB
Allocatable yes
PE Size (KByte) 131072
Total PE 6115
Free PE 22
Allocated PE 6093
PV UUID 4e0pIE-AoXc-2bb5-m6Q9-Eb2z-gmHW-Gu9Owl
--- Physical volume ---
PV Name /dev/sdb1
VG Name vg0
PV Size 8192.00 EB / not usable 8192.00 EB
Allocatable yes (but full)
PE Size (KByte) 131072
Total PE 13386
Free PE 0
Allocated PE 13386
PV UUID aX4eXc-5ADq-BTl2-sZzY-36kX-A0zx-bDKIQf
--- Physical volume ---
PV Name /dev/sdc1
VG Name vg0
PV Size 8192.00 EB / not usable 8192.00 EB
Allocatable yes (but full)
PE Size (KByte) 131072
Total PE 13386
Free PE 0
Allocated PE 13386
PV UUID fgu78M-yzS9-OPbV-2aXt-NgJP-A6dA-ZpQCkt
[root at login-0-0 ~]# vgdisplay
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 3
Act PV 3
VG Size 4.72 TB
PE Size 128.00 MB
Total PE 38689
Alloc PE / Size 38667 / 4.72 TB
Free PE / Size 22 / 2.75 GB
VG UUID Qjb9Fq-o5Jy-MH1n-453l-gQqp-iqqN-49sUIS
--- Volume group ---
VG Name vg0
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 3.27 TB
PE Size 128.00 MB
Total PE 26772
Alloc PE / Size 26772 / 3.27 TB
Free PE / Size 0 / 0
VG UUID DlYlrX-oFu7-S3rf-GVH0-5sVp-cuQh-0VGIdy
[root at login-0-0 ~]# lvdisplay
--- Logical volume ---
LV Name /dev/vg1/lv1
VG Name vg1
LV UUID SNdEg6-nshz-xtzf-ml4R-jraE-ukEZ-eqK6hE
LV Write Access read/write
LV Status NOT available
LV Size 4.72 TB
Current LE 38667
Segments 3
Allocation inherit
Read ahead sectors 0
--- Logical volume ---
LV Name /dev/vg0/lv0
VG Name vg0
LV UUID fOvYHo-jj3e-qoZK-nvU8-7yu3-z19U-siuqOP
LV Write Access read/write
LV Status NOT available
LV Size 3.27 TB
Current LE 26772
Segments 2
Allocation inherit
Read ahead sectors 0
More information about the linux-lvm
mailing list