Bug 1289156
| Summary: | Replication: host_storages table, duplicate key | |||
|---|---|---|---|---|
| Product: | Red Hat CloudForms Management Engine | Reporter: | Jan Krocil <jkrocil> | |
| Component: | Appliance | Assignee: | Nick Carboni <ncarboni> | |
| Status: | CLOSED ERRATA | QA Contact: | Alex Newman <anewman> | |
| Severity: | high | Docs Contact: | ||
| Priority: | high | |||
| Version: | 5.5.0 | CC: | abellott, cpelland, dajohnso, jhardy, jocarter, jprause, mfeifer, ncarboni, obarenbo, ssainkar | |
| Target Milestone: | GA | Keywords: | ZStream | |
| Target Release: | 5.6.0 | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | replication | |||
| Fixed In Version: | 5.6.0.0 | Doc Type: | Bug Fix | |
| Doc Text: |
In the previous version of CloudForms Management Engine, replication failed with duplicate key present in the `host_storages` table on master.
This was happening because a migration was adding a primary key to the host_storages table and in the process altering existing rows to have a key within the range defined by the current database region. This caused existing rows in the host_storages table to be assigned primary keys in the master database region which resulted in rows with ids from multiple regions (master and remote regions). Replication determines whether a row exists on the master side by comparing primary keys. Thereby, the primary key did not match for a row where it should. This caused replication to attempt to reinsert the row which failed because of a unique index on two other columns in host_storages.
This patch adds migration to fix host_storages replication issue. This removes the entries in the host_storages table on the target region and resets the replication triggers on the source regions which has now resolved the issue.
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Story Points: | --- | |
| Clone Of: | ||||
| : | 1289200 (view as bug list) | Environment: | ||
| Last Closed: | 2016-06-29 15:18:04 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1289200 | |||
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Comment 2
Nick Carboni
2015-12-07 15:09:50 UTC
Added link to migration article New commit detected on ManageIQ/manageiq/master: https://github.com/ManageIQ/manageiq/commit/04b785eee3771861e3d9a9e7cd78064a721fb0e9 commit 04b785eee3771861e3d9a9e7cd78064a721fb0e9 Author: Nick Carboni <ncarboni> AuthorDate: Tue Dec 8 16:06:55 2015 -0500 Commit: Nick Carboni <ncarboni> CommitDate: Wed Dec 9 08:52:56 2015 -0500 Add migration to fix host_storages replication issue After we run the migration added in commit 04f2fa211b8ebeb0557ca3712af846c9b556869f the table host_storages will be assigned a primary key column and existing rows will be given a value within the current region's range. This causes an issue when run on a replication target as the id should match the one on the replication source region not the target one. This fix removes the entries in the host_storages table on the target region and resets the replication triggers on the source regions. https://bugzilla.redhat.com/show_bug.cgi?id=1289156 ...0956_fix_host_storage_replication_on_upgrade.rb | 49 ++++++++++++++++++++++ ...fix_host_storage_replication_on_upgrade_spec.rb | 47 +++++++++++++++++++++ 2 files changed, 96 insertions(+) create mode 100644 db/migrate/20151208150956_fix_host_storage_replication_on_upgrade.rb create mode 100644 spec/migrations/20151208150956_fix_host_storage_replication_on_upgrade_spec.rb Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2016:1348 |