How to copy a large LVM volume (14TB) from one server to another?
- by bruce
I have to copy a very large LVM volume from server A to server B. Below is the filesystem of server A and server B
Server A
[root@AVDVD-Filer ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_avdvdfiler-lv_root
16T 14T 1.5T 91% /
tmpfs 3.0G 0 3.0G 0% /dev/shm
/dev/cciss/c0d0p1 194M 23M 162M 13% /boot
/dev/mapper/vg_avdvdfiler-test
2.3T 201M 2.1T 1% /test
/dev/sr0 3.3G 3.3G 0 100% /mnt
server B
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-LogVol00
20G 2.5G 16G 14% /
tmpfs 3.0G 0 3.0G 0% /dev/shm
/dev/cciss/c0d0p1 194M 23M 162M 13% /boot
/dev/mapper/VolGroup00-LogVol00
16T 133M 15T 1% /xiangao/lv1
/dev/mapper/VolGroup00-LogVol01
4.7T 190M 4.5T 1% /xiangao/lv2
I want to copy the LVM volume /dev/mapper/vg_avdvdfiler-lv_root on server A to LVM volume /dev/mapper/VolGroup00-LogVol00 on server B. Server A and server B are in the same IP segment. In the LVM volume on server A, there is all average 500M avi wmv mp4 etc.
I tried mounting /dev/mapper/vg_avdvdfiler-lv_root on server A to server B through NFS, then use cp to copy. It is clear I failed.
Because the LVM volume is too big, I do not have good idea why. I hope a good solution here.
