Thanks Adrian. I removed "-k" flag. But still got same error. There seems to be a postmaster servicing the old cluster. Please shutdown that postmaster and try again. Failure, exiting -----Original Message----- From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx] Sent: Tuesday, June 12, 2018 3:48 PM To: Murthy Nunna <mnunna@xxxxxxxx>; pgsql-general@xxxxxxxxxxxxxxxxxxxx; pgsql-admin@xxxxxxxxxxxxxxxxxxxx; pgsql-performance@xxxxxxxxxxxxxxxxxxxx Subject: Re: pg_upgrade 10.2 On 06/12/2018 01:34 PM, Murthy Nunna wrote: > In older versions of pg_upgrade (e.g from 9.2 to 9.3), I was able to > run pg_upgrade without stopping old cluster using the check flag. > > pg_upgrade -b <old-bin> -B <new-bin> -d <old-data> -D <new-data> -p > 5432 -P 5434 -r -v -k -c > > Note the "c" flag at the end I take the below to it mean it should work: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.postgresql.org_docs_10_static_pgupgrade.html&d=DwID-g&c=gRgGjJ3BkIsb5y6s49QqsA&r=0wrsmPzpZSao0v32yCcG2Q&m=g2e1NMngBLIcEgi5UjlCHkyJ5zK1Su-vsaRw0Y9N0Dc&s=PDVmjA_uW6cJvV4lWR8vgkiArplzgd5Rs4taLA6ZY6Q&e= > "You can use pg_upgrade --check to perform only the checks, even if > the old server is still running. pg_upgrade --check will also outline any manual adjustments you will need to make after the upgrade. If you are going to be using link mode, you should use the --link option with --check to enable link-mode-specific checks." Might want to try without -k to see what happens. More comments below. > However pg_upgrade in 10 (I tried from 9.3 to 10.4), when I did not > stop the old cluster, the upgrade failed: > > *** > > There seems to be a postmaster servicing the old cluster. > > Please shutdown that postmaster and try again. > > Failure, exiting > > Is this expected? > > Also, when I stopped the old cluster and ran pg_upgrade with "-c" > flag, the file global/pg_control got renamed to global/pg_control.old. > The "-c" flag never renamed anything in the old cluster in older > pg_upgrade Again seems related to -k: " If you ran pg_upgrade without --link or did not start the new server, the old cluster was not modified except that, if linking started, a .old suffix was appended to $PGDATA/global/pg_control. To reuse the old cluster, possibly remove the .old suffix from $PGDATA/global/pg_control; you can then restart the old cluster. " > -- Adrian Klaver adrian.klaver@xxxxxxxxxxx
