[ovirt-users] Re: LVM vs DF discrepancy usage (with NFS)

. Installation : Each host is installed with the node iso. Harddrive are not SSD and are in RAID5 (physical or logical) Each harddrive has a standard oVirt node install auto partitionning, except for one thing, we reduce the / mount point to make a new partition in XFS for the data storage mount point (the partition is inside LVM in our case) . The problem : We experienced on all of this hosts huge discrepancy between the LVS command and DF on usage of the different partition. (sometimes up to a 90% difference !) Spoiler alert, DF is right, LVM is wrong. I think (but i might be wrong), that when we delete -in ovirt- a lot of data on the drive, LVM doesn't get all the data about that.