WO2008116712B1 - In-band problem log data collection between a host and a storage system - Google Patents

In-band problem log data collection between a host and a storage system

Info

Publication number
WO2008116712B1
WO2008116712B1 PCT/EP2008/052172 EP2008052172W WO2008116712B1 WO 2008116712 B1 WO2008116712 B1 WO 2008116712B1 EP 2008052172 W EP2008052172 W EP 2008052172W WO 2008116712 B1 WO2008116712 B1 WO 2008116712B1
Authority
WO
WIPO (PCT)
Prior art keywords
state save
host
data
storage system
storage
Prior art date
Application number
PCT/EP2008/052172
Other languages
French (fr)
Other versions
WO2008116712A1 (en
Inventor
Andrew Grimes
Nikhil Khandelwal
Original Assignee
Ibm
Ibm Uk
Andrew Grimes
Nikhil Khandelwal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ibm, Ibm Uk, Andrew Grimes, Nikhil Khandelwal filed Critical Ibm
Priority to JP2010500170A priority Critical patent/JP5079080B2/en
Priority to EP08717036A priority patent/EP2140353A1/en
Priority to CN200880009768A priority patent/CN101652751A/en
Priority to KR1020097012108A priority patent/KR20090106469A/en
Publication of WO2008116712A1 publication Critical patent/WO2008116712A1/en
Publication of WO2008116712B1 publication Critical patent/WO2008116712B1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0766—Error or fault reporting or storing
    • G06F11/0778—Dumping, i.e. gathering error/state information after a fault for later diagnosis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0727—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in a storage system, e.g. in a DASD or network based storage system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/28—Error detection; Error correction; Monitoring by checking the correct order of processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A systemand method for in-band problemlog data collection are 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 witha host systemlog. 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 oftransient data may be collected to provide more comprehensive state information for debugging purposes.

Claims

39AMENDED CLAIMS received by the International Bureau on 06 October 2008 (06.10.2008)
1. A method for collecting data corresponding to a failure in a SAN, comprising: receiving a failure notification of a failure condition of a component of the SAN; receiving state save data from the plurality of data processing systems in the SAN, wherein the state save data is generated in the plurality of data processing systems in response to an in-band state save command; and outputting the state save data for use in resolving the failure condition of the component, wherein the in-band state save command is a command issued across a data channel between a first data processing system and at least one second data processing system in the SAN.
2. The method of claim 1, wherein the first data processing system is a storage system and the at least one second data processing system is at least one host system.
3. The method of claim 2, wherein the in-band state save command is sent from a storage controller of the storage system to the at least one host system in response to the failure condition being a failure of a storage device in the storage system.
4. The method of claim 3, wherein: the in-band state save command is issued to a plurality of host systems via a multi-host system interface of the storage system which establishes a data channel with each of the host systems in the plurality of host systems, the state save data is collected by each of the plurality of host systems and provided to the storage controller via the data channels established by the multi-host system interface, and , the state save data collected by each of the plurality of host systems is packaged together with state save data from the storage system into a single data package associated with the detected failure condition.
5. The method of any one of claims 2 to 4, wherein the in-band state save command is sent from at least one driver executing on a host system of the at least one host system to a 40
storage controller of the storage system in response to the failure condition being a failure of an application instance executing on the host system; and further comprising: requesting a first state save operation in the at least one host system to thereby generate at least one host state save log data structure; requesting a second state save operation in the storage system to thereby generate a storage system state save log data structure; and packaging the at least one host state save log data structure with the storage system state save log data structure into a single state save package data structure that is stored in the storage system and is associated with the failure condition, wherein outputting the state save data for use in resolving the failure condition of the component comprises outputting the state save package data structure to a third data processing system.
6. A computer program comprising computer program code to, when loaded into a computer system and executed thereon, cause said computer system to perform all the steps of the method according to any one of claims 1 to 5.
7. A SAN, comprising: at least one host system; and a storage system coupled to the at least one host system, wherein: one of the at least one host system or the storage system receives a failure notification of a failure condition of a component of the SAN; the storage system receives first state save data from the at least one host system, and collects second state save data from one or more storage devices of the storage system, wherein at least one of the first state save data or the second state save data is generated in response to an in-band state save command; and the storage system outputs the first state save data and second state save data for use in resolving the failure condition of the component, wherein the in-band state save command is a command issued across a data channel between the storage system and the at least host system. 41
8. The system of claim 7, wherein the in-band state save command is sent from a storage controller of the storage system to the at least one host system in response to the failure condition being a failure of a storage device in the storage system.
9. The system of claim 8, wherein: the in-band state save command is issued to a plurality of host systems via a multi-host system interface of the storage system which establishes a data channel with each of the host systems in the plurality of host systems, the first state save data is collected by each of the plurality of host systems and provided to the storage controller via the data channels established by the multi-host system interface, and the first state save data collected by each of the plurality of host systems is packaged together with the second state save data into a single data package associated with the detected failure condition.
10. The system of any one of claims 7 to 9, wherein the in-band state save command is sent from at least one driver executing on a host system of the at least one host system to a storage controller of the storage system in response to the failure condition being a failure of an application instance executing on the host system; and wherein a storage controller of the storage system: requests a first state save operation in the at least one host system to thereby generate at least one host state save log data structure; requests a second state save operation in the storage system to thereby generate a storage system state save log data structure and packages the at least one host state save log data structure with the storage system state save log data structure into a single state save package data structure that is stored in the storage system and is associated with the failure condition, wherein the storage system outputs the state save data for use in resolving the failure condition of the component by outputting the state save package data structure to a data processing system.
PCT/EP2008/052172 2007-03-28 2008-02-22 In-band problem log data collection between a host and a storage system WO2008116712A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2010500170A JP5079080B2 (en) 2007-03-28 2008-02-22 Method and computer program for collecting data corresponding to failure in storage area network
EP08717036A EP2140353A1 (en) 2007-03-28 2008-02-22 In-band problem log data collection between a host and a storage system
CN200880009768A CN101652751A (en) 2007-03-28 2008-02-22 In-band problem log data collection between a host and a storage system
KR1020097012108A KR20090106469A (en) 2007-03-28 2008-02-22 In-band problem log data collection between a host and storage system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/692,223 2007-03-28
US11/692,223 US7882393B2 (en) 2007-03-28 2007-03-28 In-band problem log data collection between a host system and a storage system

Publications (2)

Publication Number Publication Date
WO2008116712A1 WO2008116712A1 (en) 2008-10-02
WO2008116712B1 true WO2008116712B1 (en) 2008-11-27

Family

ID=39643045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/052172 WO2008116712A1 (en) 2007-03-28 2008-02-22 In-band problem log data collection between a host and a storage system

Country Status (6)

Country Link
US (1) US7882393B2 (en)
EP (1) EP2140353A1 (en)
JP (1) JP5079080B2 (en)
KR (1) KR20090106469A (en)
CN (1) CN101652751A (en)
WO (1) WO2008116712A1 (en)

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Also Published As

Publication number Publication date
JP2010524053A (en) 2010-07-15
JP5079080B2 (en) 2012-11-21
CN101652751A (en) 2010-02-17
KR20090106469A (en) 2009-10-09
US7882393B2 (en) 2011-02-01
EP2140353A1 (en) 2010-01-06
US20080244331A1 (en) 2008-10-02
WO2008116712A1 (en) 2008-10-02

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