NetApp Engineer

Automated Network Validation Library

 This can bind to a certain port and will receive UDP packets. I don’t know UDP well enough to fully validate this tool, but it does appear to be able to receive encoded commands via UDP. The output from the this command is only seen directly on the console.

filer1*> anvl 27
OS_CALL –> OSSockSocket(sType == 2) OK
OS_CALL –> OSSockBind(sock == 2998462968, port == 27) OK
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL

OS_CALL –> OSSockRecvFrom  recvfrom ret 4 errno 2
anvl OSSockRecvFrom 4
DEBUG –> Received command [df
] from ANVL

—>Start UDP Control Message decode
No message decode for this message
type=df
  command =df

Probably this is a new message for which decode
has not been coded
Modify MessageDecode
—>End UDP Control Message decode
—>Start UDP Control Message ACK
Sending 4~~~~~~~~~~~~~~~~~
OS_CALL –> OSSockSendTo: 18 bytes sent.
OS_CALL –> OSSockSendTo(sock == 2998462968) OK
—>End UDP Control Message ACK

Unknown command :: 0
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL
OS_CALL –> OSSockRecvFrom  recvfrom ret 4 errno 2
anvl OSSockRecvFrom 4
DEBUG –> Received command [df
] from ANVL

—>Start UDP Control Message decode
No message decode for this message
type=df
  command =df

Probably this is a new message for which decode
has not been coded
Modify MessageDecode
—>End UDP Control Message decode
—>Start UDP Control Message ACK
Sending 4~~~~~~~~~~~~~~~~~
OS_CALL –> OSSockSendTo: 18 bytes sent.
OS_CALL –> OSSockSendTo(sock == 2998462968) OK
—>End UDP Control Message ACK

Unknown command :: 0
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL

I was going to try go through all these and post them in one go, but I’m going to separate them all out onto separate pages. This makes it easy to comment against and for me to update each command as I find out more info. I will try keep this section updated as I discover new commands or as I find new uses for old commands.

Enjoy!

As a follow up from my last post of the java shell (java netapp.cmds.jsh) within the NetApp. There are of course hidden commands!

 Read more... (434 words, estimated 1:44 mins reading time)

There’s a little known hidden gem in the NetApp systems, a Java shell! We’re told that this is extremely dangerous and totally unsupported. Something as special as this obviously gets the hair on the back of my neck, and makes me want to see what I can break with it. So this is what happens when I play with the Java shell in the NetApp system!

 Read more... (1092 words, estimated 4:22 mins reading time)