moving /var/vmail to a sperate disk

Hi,
i need to move my /var/vmail to another disk, and just want to sanity check beforehand. So these are the steps that i would do:

• stop all services related to mail
• mount the disk to a tmp path like /mnt/
• move over all data from /var/vmail to /mnt
• unmount /mnt
• mount the disk to /var/vmail
• create an fstab entry for it
• restart alle the services

Anything else, that i might forgot?

 

In not that into the quota stuff, do i need to set these mount options to not break ISPConfig quotas for mail?

Code:

UUID=d6e8015e-77b6-44ed-9d52-88d2daf2d233 /var/vmail    ext4    usrjquota=quota.user,grpjquota=quota.group,jqfmt=vfsv0 1 1

I've tried but i got an error while booting up

 

Oh that makes sense. Thank you!