van Sleeuwen, Berry wrote:
> Hello Mark,
>
> I'll have to look into the flashcopy process but have not taken the time for 
> it just yet.
>
> I guess one thing that would be wrong then is that I copy from the live 
> system. So the source nlzlx920 is being copied from within the nlzlx920. But 
> would that introduce IO errors on the target disks? If anything I'd expect to 
> see errors during boot of the target guest. Either in a filesystemcheck or 
> dmesg afterwards. Much like when you DDR a live VM and get a warmstartdata 
> error when the target is IPLled. Perhaps a rethink of the process is in 
> order. I guess a resque system would be an option. I do like to have a resque 
> machine so I could also use that machine to do the cloning.
>
> As for other questions, I also assume I have the rights. No errors on that 
> part. Same amount of cylinders. I have not yet ran the fsck on the source nor 
> did I test it in a failsafe IPL of a new target. I dd with "dd bs=4096 
> if=$sDev of=$tDev" no other options. Haven't ran dd during the process by 
> hand, other than a manual test to clone the first machine and to test the 
> steps in the script. No erep or errors within the operator log. There is no 
> error from the VM part. It's only within the linux.
>
> Regards, Berry.
>

Never clone a "live" Linux filesystem. Once the filesystem has been
mounted the filesystem is cached in storage (as are updates) and the on
disk filesystem is marked 'dirty".

Stop the "master" linux system with a clean shutdown, and copy the disk
using flashcopy or ddr if you prefer.

This new copy is the "master" disk to be used for future copies.
Reboot the Linux system and run an e2fsck on the new copy to ensure it
is good. Then clone as you like ;-)

mark

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