This one is a little embarrassing.
Just trying to install Magento on a new (fresh) container. Running across the following style of error (when executing ./pear install magento-core/Mage_All_Latest-stable) :
Turns out that the default Quota for the OpenVZ container I had was extremely small. Magento (or pear) doesn’t complain about disk space explicitly…
In the host /etc/vz/vz.conf, all I had to do was adjust the :
and then run (in the Magento container) :