RAL Tier1 Incident 20160600 Tape Library Software Crashes
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Contents
RAL-LCG2 Incident 20160600 Tape Library Software Crashest
Description:
The Control Software for the Tape Libraries (ACSLS) crashes/hangs frequently
Impact
Describe the type of impact. Include which services / VOs. How long they were impacted for and give the dates. If data loss ensure this is clearly flagged.
Timeline of the Incident
| When | What | ||||||
|---|---|---|---|---|---|---|---|
| 17th February 2016 | Upgrade all tape servers to 2.1.15-20 | ||||||
| 25th April 2016 | Upgrade tape servers lcgcts{12,13} to 2.1.16-0 (7% of drives) | ||||||
| 26th April 2016 | Upgrade tape servers lcgcts{10,11,20,21,27} to 2.1.16-0 (31% of drives; lcgcts{20,21} have two drives attached) | ||||||
| 3rd May | Elevator in T1 tape library goes offline | ||||||
| 9th May | Engineer on site. No luck getting elevator working. Second elevator in T1 library dies during BMS outage. | ||||||
| 10th May | Engineer swaps third of the cards that had been delivered. No luck getting both elevators working | ||||||
| 11th May | Problem escalating with no power to LSMs in T1 library. | 17th May 2016 | Upgrade all remaining tape servers to 2.1.16-0 | - | 19th May 2016 | All Facilities tape servers at 2.1.16-0 | |
| 20th May 2016 | Restarter cron added to all tape servers to cope with Castor mount "feature" and tape library problems. | ||||||
| 25th May | acsls swapped over to cftsh05 due to problems with Buxton. | ||||||
| 7th June | acsls swapped back to Buxton | ||||||
| 17th June | Buxton1 (acsls 8.4) put into production. |
Incident details
Put a reasonably detailed description of the incident here.
Analysis
This section to include a breakdown of what happened. Include any related issues.
Follow Up
This is what we used to call future mitigation. Include specific points to be done. It is not necessary to use the table below, but may be easier to do so.
| Issue | Response | Done |
|---|---|---|
| Issue 1 | Mitigation for issue 1. | Done yes/no |
| Issue 2 | Mitigation for issue 2. | Done yes/no |
Related issues
List any related issue and provide links if possible. If there are none then remove this section.
Reported by: Your Name at date/time
Summary Table
| Start Date | Date e.g. 20 July 2010 |
| Impact | Select one of: >80%, >50%, >20%, <20% |
| Duration of Outage | Hours e.g. 3hours |
| Status | select one from Draft, Open, Understood, Closed |
| Root Cause | Select one from Unknown, Software Bug, Hardware, Configuration Error, Human Error, Network, User Load |
| Data Loss | Yes/No |
