psql: FATAL: could not open file "base/11951/11717": Read-only file system

Question

I'm trying to access the postgreSQL database from CLI. When I login as postgres and enter command

I'm getting error

psql: FATAL:  could not open file "base/11951/11717": Read-only file system

I'm new to this. Any pointers on where to look at would be a great help. TIA

Answer 1

Seems like the VM where the database was hosted went to Read-only mode for an unknown issue.

$ fsck 

command helped to repair linux filesystems and was able to access psql db.