On Fri, Jul 12, 2019 at 5:22 PM Ibrahim Edib Kokdemir <kokdemir@xxxxxxxxx> wrote: > > Hi, > I upgraded my cluster from 9.6 to 11 with pg_upgrade hardlink parameter two days ago. Since then it has been working great as v11. Today while running heavy update queries on it, I got the "FATAL: invalid page in block 0 of relation global/1262" message and server crushed. > Hard reset and trying to start, it start but shows the same error message and do not let me to connect. "psql: FATAL: invalid page in block 0 of relation global/1262". I read that the filenode 1262 is for pg_database table. > The error message is indicating there is a page checksum error, i.e., the filesystem got corrupted. I'm not aware of any way of turning it off without re-initdbing (<https://www.postgresql.org/docs/11/app-initdb.html>). Sorry, but seems to me a good backup is required to fix it. Luca
