Bug 1564084
| Summary: | [tcmu-runner] tcmu_rbd_lock_break and tcmu_notify_lock_lost errors on reboot of gw node | ||
|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Ceph Storage | Reporter: | Madhavi Kasturi <mkasturi> |
| Component: | iSCSI | Assignee: | Mike Christie <mchristi> |
| Status: | CLOSED ERRATA | QA Contact: | Madhavi Kasturi <mkasturi> |
| Severity: | medium | Docs Contact: | Aron Gunn <agunn> |
| Priority: | medium | ||
| Version: | 3.0 | CC: | agunn, ceph-eng-bugs, ceph-qe-bugs, edonnell, jbrier, jdillama, kdreyer, mchristi, tchandra, vereddy |
| Target Milestone: | rc | ||
| Target Release: | 3.1 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | tcmu-runner-1.4.0-0.1.el7cp | Doc Type: | Bug Fix |
| Doc Text: |
.Rebooting the Object Gateway no longer sees the `tcmu_rbd_lock_break` and `tcmu_notify_lock_lost` errors
During failover/failback and initial device discovery with a multipath setup, `tcmu-runner` may need to take the lock away from another iSCSI gateway. When this happens the initiator may be sending IO to multiple paths at the same time, so multiple gateways will try to take the lock from each other. This can result in errors like:
`Could not break lock from $locker_id (Err -16)`
These errors are expected temporarily while the failover/failback or device setup process is executing. However, `tcmu-runner` would sometimes not fully clean itself up after losing the lock, so the `-16` error would repeat and the gateway could not be used until it was rebooted. The `tcmu-runner` daemon has been changed to always reopen the device after losing the lock so the internal state is reinitialized before use.
With this update to {product}, failover/failback and device set up complete. Lock breaking errors with the error code `-16` should only temporarily be logged to the target logs.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-09-26 18:19:46 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: | 1557269 | ||
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Comment 25
errata-xmlrpc
2018-09-26 18:19:46 UTC
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