Para mi tienes un problema con el sistema operativo Linux donde vive el PG , es posible que uno de tus discos no esté montado ( o se haya desmontado por alguna razón) llenado, o el clúster no esté detectando el storage donde se guardan los archivos base de PostgreSQL.
Yo consultaría si la VM tiene algún problema antes de proceguir... Y si te dicen que no lo hay , bueno... Reinicia el server .
You have some kind of corruption. You didn't tell us what version you are using. For me, that file being missing just causes FATAL, not PANIC. I don't know why it would be different for you.
If you shutdown the database and then start it back up with the -P option to 'postgres' of "-o -P" for 'pg_ctl', then you should be able to connect to the database and do a REINDEX SYSTEM. This should fix the problem. Then you can shut it down and start it up again without the special option.
However, once you have some kind of corruption there is no telling how much other corruption you also have. Why would just this one file happen to be missing?
