@olivierlambert Under XOA / SR / [volume] / Advanced that there are several disks with non-0 VDI to coalesce. All are '1' except for one which is '3'. The count does not seem to be decreasing after many hours. On the server 'xe task-list' shows no activity other than occasional and brief "SR scan".

-> Should the "VDI to coalesce" decrease over several hours without intervention?
-> Is the WebUI "Rescan all disks" different from the job that runs automatically in the background , so that running it might do some good?