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07-28-2005 02:06 AM
07-28-2005 02:06 AM
Regarding VG & LVM
How can we move Harddisk from one server to another server without loosing data.
I tried, vgimport, vgcfgbackup & vgexport. But this did not work. I am able to regenerated VG, but LVMs are not copied.
Can you please any guide?
Regards,
Srichandan
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07-28-2005 03:58 AM
07-28-2005 03:58 AM
Re: Regarding VG & LVM
please tell us more about your servers (model, operating system ...) and the kind of the disks (internal/external, vg00/01 ...).
Hope this helps!
Regards
Torsten.
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07-28-2005 06:28 AM
07-28-2005 06:28 AM
Re: Regarding VG & LVM
1) Document all LVs and entries in /etc/fstab for this VG
2) Unmount all LVs.
3) Deactivate VG (vgchange -a n vg01)
4) Export VG and create map file (vgexport -v -p -s -m /var/tmp/vg01.map vg01)
5) Remove disk from 1 machine and put in the other.
On 2nd machine:
6) Copy /var/tmp/vg01.map from other machine to /var/tmp on this machine.
7) Make sure disk is seen by system - ioscan -fnC disk
8) Generate disk device files -- insf -e
9) Do another ioscan to make sure disk device file are there.
10) Create VG structure
10a) mkdir /dev/vg01
10b) mknod /dev/vg01/group c 64 0x010000
11) Import the VG -- vgimport -v -s -m /var/tmp/vg01.map vg01
12) Activate VG -- vgchange -a y vg01
13) Modify /etc/fstab with appropriate entries and mount filesystem
You should now be done.
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07-28-2005 03:05 PM
07-28-2005 03:05 PM
Re: Regarding VG & LVM
Thank you very much for information. I will try this and let you know.
If external AutoRAID is connected to machine and i want to move data (entire raid) to different server, what should i do ?
Request your support in this.
Regards,
Srichandan
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07-29-2005 01:02 AM
07-29-2005 01:02 AM
Re: Regarding VG & LVM
If there are multiple VGs defined on the AUTORAID, be sure to do the steps I outline for ALL VGs on BOTH machines.
Just disconnect the AUTORAID from one machine and then connect it to the other.