[tech] Something wrong with thedom102's /away directory

[David Adam]

On Thu, 26 May 2016, Frames wrote:
> there is something wrong with thedom102's /away directory.
> 
> In particular root doesn't seem to be able to read:
> `/away/ucc/thedom102/Documents`
> 
> Anyone got any idea what is going on with it?
> 
> Running directly on molmol seems to work, but then freezes the whole 
> session
> suddenly when in the directory (probably on tabcompletion trying to read 
> a directory).
> 
> Ben has been having these issues for a while,
> I recall TPG found and fixed something a while back.
> 
> I'm spending a bit of time debugging but I got to go do work very soon.
> Anyone got bright ideas?

It looks like this got fixed by rebooting molmol. Unfortunately this seems 
to be a problem that only manifests itself after a certain amount of 
uptime.

We're not having a lot of luck tracking down the various wedging problems 
that occur, unfortunately. I am tempted to build another kernel which has 
the debugger and extra checks built-in.

In the meantime, if it happens again, before running reboot, could 
whichever Wheel member is handy at the time run `/root/wedge-info`? This 
is a script that captures the output of the following; [AHC] might be 
able to comment on other useful commands.

ps axuwB
procstat -kk -a
zfs-stats -a
vmstat
vmstat -z
netstat -s

Thanks

David Adam
zanchey@