Ceph » CephFS

cephfs-top shows "exception: curses function returned NULL", when cephfs-top starts in a smaller window (pad_width <= 300) and the user resize the window width > 300 and navigates to the other displays.

We have fixed a similar exception during init: https://github.com/ceph/ceph/pull/59566/commits/a59f007695dd8f4e121613709f4de520eda55ab9. But that's not enough.
The problem is we are using a smaller pad (width = 300), created at init. Then we resize the terminal and try to create new subwindows in the pad, eachtime we navigate. This is not possible and cephfs-top crashes.

The solution is,
We need to fix this by creating a newpad everytime we create a new display, so that the newly created subwindows could accommodate or the subwindow size should be calculated accordingly to create a smaller display to stay with in the pad. I would go with the former, as would create a better display.