Hi, on an EL5 XEN DOM0 system I have following volume $ df -h /srv Filesystem Size Used Avail Use% Mounted on /dev/sdc1 917G 858G 60G 94% /srv that partition was used by virtual machines but they were all halted. service xendomains stop $ xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 3000 2 r----- 695.1 $ service xend stop nothing is using the partition $ lsof |grep srv <empty> $ fuser -m /srv <empty> $ fuser -km /srv <empty> but i can not umount /srv $ umount /srv umount: /srv: device is busy umount: /srv: device is busy what could keeping the device "busy" ... ? __ Thanks, LF