could not write block

Kopljan Michael wrote:

recently appears to me the following error :

could not write block 86 of relation 1663/121027/151994: Invalid argument

What is that error and how to fix this?

It's much more likely to be a problem with your disks or filesystem than
with PostgreSQL.

"Invalid argument" is a standard system call error code translation for
the code -EINVAL .

You should check your kernel logs for error messages about your disks
and file systems. You should also run a file system check (fsck) on your
filesystems. If you have a RAID array, get it to do a
verification/scrubbing run too.

--
Craig Ringer