storage: NFS unmounting of a busy share lacks critical information

[andreasn]

In the usability testing of NFS, we identified that all four participants lacked the information to know if a busy share was safe to unmount.
While the session information was great, they wanted more information about how long ago the session was active.

[andreasn]

If we put in a timestamp for when the session was last active, that should help.

[andreasn]

Some quotes from the test:

• "It's nice to have it ask you for confirmation. It need some prompt to say ""Are you sure you want to do that?"" We're trusting our sysadmins in the extreme.
• Ideally I would like to see what other services are being run under that session. It doesn't give me enough information.
• Want to know what other services are being run by that user. If it's safe to stop and unmount.
• I want more information in the popup.
• I understand that I'll lose the session. I would try to find out who has this login session, before I yank out this login session.
• I want to see ""terminate session"" under Account.
• It would be useful in Accounts that something here says that I'm in Session4, because nothing is linking it now.
• I would go and talk to them before stopping and unmounting. I would look at the CPU, Memory etc by user and I don't see anything here about that. I would go and look in system, and try and find the resource user for that user, and if that person is idle, I would kick them off. "