In-band problem log data collection between a host system and a storage system
US7882393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Sep 17, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mechanism for in-band problem log data collection is provided. Facilities are provided for a host system, host application, or server system to instigate a state save operation in a storage system utilizing direct commands in response to an error or failure. The host system may include an application program interface (API) to force the storage device to collect a set of state save data for debug purposes at a specific time interlocked with a host system log. The API of the illustrative embodiments may be provided in a failover driver and/or host bus adapter (HBA) driver in the prime code path such that first time data capture following an error is maximized. Since the host system is instigating the state save operation with direct commands, a larger amount of transient data may be collected to provide more comprehensive state information for debugging purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.