Today my Synology can't login in DSM!!! First, I named it as synology_A. There is another Synology it works well,named it as synology_B.
synology_A info:
Product:DS3617xs
Version:DSM 6.1.5-15254 Update 1
bootloader:DS3617xs 6.1 Jun's Mod V1.02b
Then I telnet in Synology
telnet x.x.x.x
sudo -i
#login in as root, password is same as admin.
Then I compare synology_A and synology_B's Process.I find synology_A has many [defunct] process.
root@synology_A:~# ps -ef