For some reason I had to recreate a LVM partition. The usual procedure seemed to terminate successfully with
But after checking the current status with
lvs, etc. I recognized that my logical volume was not mounted at all.
Looking into the kernel log I found
dmesg ... [1388925.704404] XFS (dm-7): Mounting V5 Filesystem [1388925.715171] XFS (dm-7): Ending clean mount ...
So the device seemed to be unmounted immediately after it was mounted.
What happens here?