Hi Aleksey,
I wrote about the new Migration Manager here:
http://talk.plesk.com/threads/migration-manager-broken-in-plesk-12-5-30.335849
Basically what takes way too long on our server was this command (on source):
/opt/plesk/python/2.7/bin/python /usr/local/psa/admin/sbin/modules//panel-migrator/plesk-migrator generate-migration-list /usr/local/psa/var/modules/panel-migrator/sessions/20151118100919/config.ini --skip-services-checks --async
It seems to read the whole /var/www/vhosts/. I just killed it nicely and the migration continued.
I wrote about the new Migration Manager here:
http://talk.plesk.com/threads/migration-manager-broken-in-plesk-12-5-30.335849
Basically what takes way too long on our server was this command (on source):
/opt/plesk/python/2.7/bin/python /usr/local/psa/admin/sbin/modules//panel-migrator/plesk-migrator generate-migration-list /usr/local/psa/var/modules/panel-migrator/sessions/20151118100919/config.ini --skip-services-checks --async
It seems to read the whole /var/www/vhosts/. I just killed it nicely and the migration continued.