[auton-users] go easy on BigPapa

[Dan Pelleg]

FYI, we had a drive failure on the main NFS disk array. It is RAID-ed in a
way that it's still fully functional, and we have kept it online. However,
until we install a replacement drive, it is more susceptible to
failures. If you are running jobs which write a lot to the NFS directory,
the most responsible thing to do would be to stop or suspend them. We
expect everything to be back in working order within 48 hours.