ssh from windows box
PS C:\Users\xxxxxx> ssh root@192.168.xxx.xx
root@192.168.xxx.xxx's password:
"System is booting up. Unprivileged users are not permitted to log in yet. Please come back later. For technical details, see pam_nologin(8)."
users is on a shared folder created on /dev/md0 raid6 array
i have to wait a while until the raid6 array is mounted to ssh on omv
*** SOLVED ***
The array is formated as F2FS
omv tries to mount it using parameters that are not compatible with F2FS
i mounted using fstab and the problem disappeared