Re: [CentOS] External Array Data Migration

2020-05-22 Thread Steven Tardy 
On Thu, May 21, 2020 at 8:31 AM Xinhuan Zheng 
wrote:

> can I detach external array from old hardware, and attach it to new
> hardware, then re-configure LVM, so new operating system can recognize the
> external array file system?



If only there existed a documentation project, for Linux which included LVM
details:

http://tldp.org/HOWTO/LVM-HOWTO/recipemovevgtonewsys.html
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[CentOS] External Array Data Migration

2020-05-21 Thread Xinhuan Zheng 
Dear All,

Below question has been puzzled me for a while, and don’t know if anyone has 
experienced such puzzle:

You have an external array attached to a physical hardware. The operating 
system is CentOS 5. The file system is created on top of LVM on external array 
& mounted. The CentOS 5 can see the array controller, and manage all LVM 
configuration, etc. There is data stored in that external array. At some point, 
you want to upgrade the operating system to higher version, CentOS 7. Is there 
a fast way to migrate the external array data volume to new hardware with 
CentOS 7 without doing machine-to-machine rsync the whole external array data 
volume? In another words, can I detach external array from old hardware, and 
attach it to new hardware, then re-configure LVM, so new operating system can 
recognize the external array file system?

Thanks,

- Xinhuan
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