Today i was trying to restore a backup of ESM stored on remote CIFS share. During the process of uploading full backup folders i was receiving multiple errors withing the GUI saying Unable to connect.
I've performed quick investigation and within /var/log/messages i saw strange error 'mount.cifs : mount error(12) : Cannot allocate memory'
After a quick discussing with my best friend Google i've found the following forum topic : Mount.cifs cannot allocate memory mounting Windows share « Boinst
In my case i had to restart the machine hosting the share as i'm not allowed to modify the registries but just in case someone else encounters this error i've decided to post it.
The restore process is still running so i'll let you know whether all is okay once it is completed.