从备份恢复Discourse时遇到问题（3.4，数据库相当大）

支持
1

Hi there,
We are one of your early bird users, we are using Discourse since 2015.
It works just fine until latest update with Postgres update included (possibly 3.4?). We have one backup points before this update. We decide to make clean install then restore from this backup.

OS: Ubuntu 24.04.1 LTS (latest updates) + docker 26.1.3
Trying to restore large discourse backup (44GB, single site) to a blank container.

Automated restore fails on DB migration with following error:
PG::DuplicateColumn: ERROR: column “notification_level” of relation “user_chat_channel_memberships” already exists (PG::DuplicateColumn)

logs:
Specifically, the migration stops after deploying the SQL archive because a column in the database is not unique.
column "notification_level" of relation "user_chat_channel_memberships" already exists

Summary

ALTER TABLE
ALTER TABLE
ALTER TABLE
ALTER TABLE
ALTER TABLE
Migrating the database…
EXCEPTION: /var/www/discourse/lib/discourse.rb:139:in `exec’: Failed to migrate database.
rake aborted!
StandardError: An error has occurred, all later migrations canceled: (StandardError)

PG::DuplicateColumn: ERROR: column “notification_level” of relation “user_chat_channel_memberships” already exists
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in exec' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in async_exec’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:56:in block (2 levels) in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1004:in block in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/concurrency/null_lock.rb:9:in synchronize' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:976:in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:55:in block in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/notifications/instrumenter.rb:58:in instrument’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1119:in log' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:54:in raw_execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:538:in internal_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:137:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/query_cache.rb:27:in execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:48:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/schema_statements.rb:629:in add_column' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:418:in add_column’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration/default_strategy.rb:10:in method_missing' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1059:in block in method_missing’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in block in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1048:in method_missing’
/var/www/discourse/plugins/chat/db/migrate/20241003122030_add_notification_level_to_user_chat_channel_memberships.rb:10:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in public_send’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in exec_migration' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in block in exec_migration’

/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in exec_migration’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:978:in block (2 levels) in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:977:in block in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:415:in with_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:976:in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1190:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1538:in block in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1591:in ddl_transaction’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1537:in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in each’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in migrate_without_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in block in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1609:in with_advisory_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1264:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1239:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/tasks/database_tasks.rb:262:in migrate' /var/www/discourse/lib/tasks/db.rake:259:in block (2 levels) in ’
/var/www/discourse/lib/distributed_mutex.rb:53:in block in synchronize' /var/www/discourse/lib/distributed_mutex.rb:49:in synchronize’
/var/www/discourse/lib/distributed_mutex.rb:49:in synchronize' /var/www/discourse/lib/distributed_mutex.rb:34:in synchronize’
/var/www/discourse/lib/tasks/db.rake:234:in block in <main>' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in <top (required)>’

Caused by:
ActiveRecord::StatementInvalid: PG::DuplicateColumn: ERROR: column “notification_level” of relation “user_chat_channel_memberships” already exists (ActiveRecord::StatementInvalid)
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in exec' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in async_exec’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:56:in block (2 levels) in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1004:in block in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/concurrency/null_lock.rb:9:in synchronize' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:976:in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:55:in block in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/notifications/instrumenter.rb:58:in instrument’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1119:in log' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:54:in raw_execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:538:in internal_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:137:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/query_cache.rb:27:in execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:48:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/schema_statements.rb:629:in add_column' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:418:in add_column’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration/default_strategy.rb:10:in method_missing' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1059:in block in method_missing’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in block in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1048:in method_missing’
/var/www/discourse/plugins/chat/db/migrate/20241003122030_add_notification_level_to_user_chat_channel_memberships.rb:10:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in public_send’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in exec_migration' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in block in exec_migration’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in exec_migration’

/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:978:in block (2 levels) in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:977:in block in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:415:in with_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:976:in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1190:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1538:in block in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1591:in ddl_transaction’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1537:in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in each’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in migrate_without_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in block in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1609:in with_advisory_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1264:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1239:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/tasks/database_tasks.rb:262:in migrate' /var/www/discourse/lib/tasks/db.rake:259:in block (2 levels) in ’
/var/www/discourse/lib/distributed_mutex.rb:53:in block in synchronize' /var/www/discourse/lib/distributed_mutex.rb:49:in synchronize’
/var/www/discourse/lib/distributed_mutex.rb:49:in synchronize' /var/www/discourse/lib/distributed_mutex.rb:34:in synchronize’
/var/www/discourse/lib/tasks/db.rake:234:in block in <main>' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in <top (required)>’

Caused by:
PG::DuplicateColumn: ERROR: column “notification_level” of relation “user_chat_channel_memberships” already exists (PG::DuplicateColumn)
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in exec' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/pg.rb:110:in async_exec’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:56:in block (2 levels) in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1004:in block in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/concurrency/null_lock.rb:9:in synchronize' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:976:in with_raw_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:55:in block in raw_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.2.2.1/lib/active_support/notifications/instrumenter.rb:58:in instrument’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:1119:in log' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:54:in raw_execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:538:in internal_execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/database_statements.rb:137:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/query_cache.rb:27:in execute' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:48:in execute’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/schema_statements.rb:629:in add_column' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:418:in add_column’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration/default_strategy.rb:10:in method_missing' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1059:in block in method_missing’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in block in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1025:in say_with_time' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1048:in method_missing’
/var/www/discourse/plugins/chat/db/migrate/20241003122030_add_notification_level_to_user_chat_channel_memberships.rb:10:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in public_send’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:997:in exec_migration' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in block in exec_migration’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure' /var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in exec_migration’

/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:978:in block (2 levels) in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in measure’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:977:in block in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:415:in with_connection’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:976:in migrate' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1190:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1538:in block in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1591:in ddl_transaction’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1537:in execute_migration_in_transaction' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in each’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1512:in migrate_without_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in block in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1609:in with_advisory_lock' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1457:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1264:in up' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/migration.rb:1239:in migrate’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.2.2.1/lib/active_record/tasks/database_tasks.rb:262:in migrate' /var/www/discourse/lib/tasks/db.rake:259:in block (2 levels) in ’
/var/www/discourse/lib/distributed_mutex.rb:53:in block in synchronize' /var/www/discourse/lib/distributed_mutex.rb:49:in synchronize’
/var/www/discourse/lib/distributed_mutex.rb:49:in synchronize' /var/www/discourse/lib/distributed_mutex.rb:34:in synchronize’
/var/www/discourse/lib/tasks/db.rake:234:in block in <main>' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in <top (required)>’
Tasks: TOP => db:migrate
(See full trace by running task with --trace)
/var/www/discourse/lib/discourse.rb:173:in execute_command' /var/www/discourse/lib/discourse.rb:139:in exec’
/var/www/discourse/lib/discourse.rb:35:in execute_command' /var/www/discourse/lib/backup_restore/database_restorer.rb:153:in migrate_database’
/var/www/discourse/lib/backup_restore/database_restorer.rb:28:in restore' /var/www/discourse/lib/backup_restore/restorer.rb:61:in run’
script/discourse:191:in restore' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/thor-1.3.2/lib/thor/command.rb:28:in run’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/thor-1.3.2/lib/thor/invocation.rb:127:in invoke_command' /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/thor-1.3.2/lib/thor.rb:538:in dispatch’
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/thor-1.3.2/lib/thor/base.rb:584:in start' script/discourse:345:in <top (required)>’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli/exec.rb:58:in load' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli/exec.rb:58:in kernel_load’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli/exec.rb:23:in run' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli.rb:455:in exec’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run’

/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in invoke_command' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/vendor/thor/lib/thor.rb:527:in dispatch’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli.rb:35:in dispatch' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/vendor/thor/lib/thor/base.rb:584:in start’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/cli.rb:29:in start' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/exe/bundle:28:in block in <top (required)>’
/usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/lib/bundler/friendly_errors.rb:117:in with_friendly_errors' /usr/local/lib/ruby/gems/3.3.0/gems/bundler-2.5.18/exe/bundle:20:in <top (required)>’
/usr/local/bin/bundle:25:in load' /usr/local/bin/bundle:25:in ’
Trying to rollback…
Rolling back…
Cleaning stuff up…
Dropping functions from the discourse_functions schema…
Removing tmp ‘/var/www/discourse/tmp/restores/default/2025-01-09-180715’ directory…
Unpausing sidekiq…
Marking restore as finished…
Notifying ‘system’ of the end of the restore…
Finished!
[FAILED]

4 个赞
2

如何修复 SQL 文件以使 db:migrate 成功运行？

2 个赞
3

旧站点使用的是哪个提交？

出现了一些回归问题，其中一个提交包含了不应包含的迁移。我猜这可能是其中一种情况。

2 个赞
4

两个实例上的插件是否完全相同？
您现有的 Discourse 是基于哪个提交，聊天插件又是基于哪个提交？

1 个赞
5

感谢您的热心参与。SQL转储文件有45GB，处理起来非常耗时。
我尝试在12月31日运行GUI更新，导致数据库迁移卡住。旧网站自1月6日以来已无法访问，我只有SQL转储文件和保存的媒体上传文件。我正在尝试启动一个新网站并在那里恢复我的数据库。我只运行了YAML中的几个插件：

1 个赞
6

您的备份文件名是什么？（它包含有关上次运行的迁移的信息）

1 个赞
7

sitename-2025-01-06-033732-v20240912212253.sql.gz

进行手动恢复时，报告了以下问题（可能也意味着什么）：
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842596361: ERROR: 无法创建唯一索引“category_featured_topics_pkey”
DETAIL: 键 (id)=(14) 重复。
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842596928: ERROR: 无法创建唯一索引“incoming_links_pkey”
DETAIL: 键 (id)=(1) 重复。
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842596937: ERROR: 无法创建唯一索引“incoming_referers_pkey”
DETAIL: 键 (id)=(1) 重复。
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842597117: ERROR: 无法创建唯一索引“post_hotlinked_media_pkey”
DETAIL: 键 (id)=(1) 重复。
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842597378: ERROR: 无法创建唯一索引“sitemaps_pkey”
DETAIL: 键 (id)=(2) 重复。
psql:/shared/backups/default/da-stereo-2025-01-06-033732-v20240912212253.sql:842597693: ERROR: 无法创建唯一索引“upload_references_pkey”
DETAIL: 键 (id)=(8) 重复。

8

这很有趣。

  • 这些冲突发生在相当琐碎的表上，并且冲突的 ID 较低
  • 您的备份来自九月，而 column "notification_level" of relation "user_chat_channel_memberships" already exists 迁移来自十月，因此它没有在您之前的实例上运行，并且它是恢复后最早运行的迁移之一。

在我看来，这听起来像是您遇到了其他问题。这是一个标准的安装吗？您之前的实例是标准安装吗？我有一种预感，备份没有在正确的模式下恢复，并且迁移正在针对一个空白实例运行。

2 个赞
9

是的，这是一个标准的 docker 安装，我的原始站点是使用此手册在 2015 年创建的。

有什么可以从 postgres 或 rails 控制台提取的信息来阐明发生了什么吗？

10

谢谢，
任何提示、技巧或指导都将不胜感激。

11

您是指仅 SQL 的 Discourse 备份，还是您以其他方式创建的某个 SQL 转储？

12

Discourse 仅备份。

在家中，我设置了 PostgreSQL，并且我们的数据备份几乎毫无问题地恢复了。
似乎在 PostgreSQL（位于 Discourse 容器内）中恢复文件时，旧数据库未被删除，这导致冲突，阻止了备份的正确部署。

13

这听起来像是理查德说的那样。

最近有一些关于 postgres 的提交，但不确定它们是否已被接受。在再次尝试恢复之前，你可以尝试重新构建。

1 个赞
14

在恢复 sql.gz 存档时，我看到以下内容：
…
正在将存档复制到临时目录…
正在提取转储文件…
正在验证元数据…
当前版本：20241224191732
恢复版本：20240912212253

并且很明显 db:migration 会因帖子 #1 中报告的错误而失败。

我看到 postgres 数据库“discourse”已恢复，其中包含所有必需的表/数据：
psql (13.18 (Debian 13.18-1.pgdg120+1))
输入“help”以获取帮助。

discourse=> \dn+
                                  模式列表
        名称         |   所有者   |   访问权限    |      描述
---------------------+-----------+------------------------+------------------------
 backup              | discourse |                        |
 discourse_functions | discourse |                        |
 public              | discourse | discourse=UC/discourse+| 标准公共模式
                     |           | =UC/discourse          |
(3 行)

discourse=> discourse=> \l
                                  数据库列表
   名称    |  所有者   | 编码 |   排序规则   |    ctype    |   访问权限
-----------+----------+----------+-------------+-------------+------------------------
 discourse | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =Tc/postgres          +
           |          |          |             |             | postgres=CTc/postgres +
           |          |          |             |             | discourse=CTc/postgres
 postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 |
 template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres           +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres           +
           |          |          |             |             | postgres=CTc/postgres
(4 行)

但 rake 报告它正在使用错误的数据库：

rake db:version

数据库： discourse
当前版本：20241224191732

如何将 rake 指向 20240912212253？

谢谢

15

当出现权限问题时，就会发生这种情况。Discourse 在恢复过程中会处理模式，当它没有权限枚举数据库中的表时，事情就会变得糟糕。

虽然我从未遇到过这种情况，但这会不会也是可用磁盘空间的问题？

1 个赞
16

凭直觉：恢复后进行表移动时是否可能发生超时？

17

感谢提示。

磁盘空间不是问题；我的空间是数据库大小的 6-7 倍。在运行迁移并修复权限之前，我可以尝试手动导入。问题是，究竟必须授予什么权限？

18

我认为您需要按以下方式更新手动脚本：

DROP SCHEMA public CASCADE;
CREATE SCHEMA public;
ALTER SCHEMA public OWNER TO discourse;
CREATE EXTENSION IF NOT EXISTS hstore;
CREATE EXTENSION IF NOT EXISTS pg_trgm;
END;

不需要创建 public schema（并设置所有者），因为较新的 Pg 会从 SQL 备份转储创建 schema。
但是，表权限必须固定为 discourse 用户，默认情况下它们是 postgres。

现在可以了！感谢大家提供的想法和支持。

6 个赞
19

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