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--- deb12:migrate [2025/07/13 11:06] – [LVM2] Bernard Condrau
+++ deb12:migrate [2025/07/13 15:11] (current) – Bernard Condrau
@@ Line 1: / Line 1: @@
 ====== Migrate data drives ======
+This guide shows how to migrate data drives from an old server to a new machine. This works when the old server is still accessible. My setup is 2 HDD -> RAID 1 -> LVM2 -> LUKS -> ext4 so it is very important to do all the steps in the correct sequence as outlined below. In my setup all data is mounted as /home.
+===== Old Server =====
+==== File System ====
+  - Unmount /home:<code>sudo umount /home</code>
+  - You might need to force unmount. Alternatively, you may want to reboot the machine without LUKS to open the encrypted container.
+update-initramfs -u
 ===== LUKS =====
   sudo cryptsetup luksHeaderBackup /dev/mapper/vg_data2-lv_home --header-backup-file /path/to/backup/header.img
@@ Line 5: / Line 13: @@
   sudo cryptsetup luksHeaderRestore /dev/sdb1 --header-backup-file /path/to/backup/header.img
+https://superuser.com/questions/1596599/is-it-safe-to-move-a-luks-encrypted-partition-to-another-system-and-be-able-to-u
 ===== LVM2 =====
-Make sure that no users are accessing files on the active volumes in the volume group, then unmount the logical volumes.
+  - Make sure that no users are accessing files on the active volumes in the volume group, then unmount the logical volumes.
-Use the -a n argument of the vgchange command to mark the volume group as inactive, which prevents any further activity on the volume group.
+  - Use the -a n argument of the vgchange command to mark the volume group as inactive, which prevents any further activity on the volume group.
-Use the vgexport command to export the volume group. This prevents it from being accessed by the system from which you are removing it.
+  - Use the vgexport command to export the volume group. This prevents it from being accessed by the system from which you are removing it.
-After you export the volume group, the physical volume will show up as being in an exported volume group when you execute the pvscan command, as in the following example.
+  - pvscan
-[root@tng3-1]# pvscan
+  - When the system is next shut down, you can unplug the disks that constitute the volume group and connect them to the new system.
-  PV /dev/sda1    is in exported VG myvg [17.15 GB / 7.15 GB free]
+  - When the disks are plugged into the new system, use the vgimport command to import the volume group, making it accessible to the new system.
-  PV /dev/sdc1    is in exported VG myvg [17.15 GB / 15.15 GB free]
+  - Activate the volume group with the -a y argument of the vgchange command.
-  PV /dev/sdd1   is in exported VG myvg [17.15 GB / 15.15 GB free]
+  - Mount the file system to make it available for use.
-  ...
-Show more
+https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/4/html/cluster_logical_volume_manager/vg_move
-Copy to Clipboard
-When the system is next shut down, you can unplug the disks that constitute the volume group and connect them to the new system.
-When the disks are plugged into the new system, use the vgimport command to import the volume group, making it accessible to the new system.
-Activate the volume group with the -a y argument of the vgchange command.
-Mount the file system to make it available for use.
-Previous
   - Unmount filesystem(s): unmount /nfs (I also had an export mirror for a Samba share that I had to un-mount as well)

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