[Bugs] [Bug 1665216] Databases crashes on Gluster 5 with the option performance.write-behind enabled

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1665216

mhutter <bugzilla.redhat.com at mhutter.net> changed:

           What    |Removed                     |Added
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                 CC|                            |bugzilla.redhat.com at mhutter
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--- Comment #5 from mhutter <bugzilla.redhat.com at mhutter.net> ---
Reproduction case: Exactly as described in the original Ticket.


# Prepare gluster volume
gluster volume set gluster-pv18 performance.write-behind off

# mount the volume
mount -t glusterfs <gluster-server>:/gluster-pv18 /mnt/gluster-pv18

# start Postgres
docker run --name psql-test --rm -v /mnt/gluster-pv18:/var/lib/postgresql/data
docker.io/postgres:9.5
# this should work as expected

# clean up
docker stop psql-test
rm -rf /mnt/gluster-pv18/*
umount /mnt/gluster-pv18

# enable write-behind
gluster volume set gluster-pv18 performance.write-behind on

# mount the volume
mount -t glusterfs <gluster-server>:/gluster-pv18 /mnt/gluster-pv18

# start Postgres
docker run --name psql-test --rm -v /mnt/gluster-pv18:/var/lib/postgresql/data
docker.io/postgres:9.5
# !!! this will now fail:

# creating template1 database in /var/lib/postgresql/data/base/1 ... ok
# initializing pg_authid ... LOG:  invalid primary checkpoint record
# LOG:  invalid secondary checkpoint record
# PANIC:  could not locate a valid checkpoint record
# Aborted (core dumped)
# child process exited with exit code 134
# initdb: removing contents of data directory "/var/lib/postgresql/data"

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