Method for restoring system configuration information of a network attached storage

• US 7,711,881 B2
• Filed: 11/22/2007
• Issued: 05/04/2010
• Est. Priority Date: 12/15/2006
• Status: Expired due to Fees

• Current Assignee: Gold Charm Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Tong, Mo-Ying
• Primary Examiner(s): Cleary; Thomas J
• Application Number:
  US11/944,422
• Publication Number:
  US 20080147948A1
• Time in Patent Office: 894 Days
• Field of Search: 710/8, 710/10, 710/104, 710/260, 710/266, 709/203, 709/211, 709/212, 709/216, 709/217, 709/219, 709/221, 714/6, 714/23, 714/2, 713/100
• US Class Current: 710/260
• CPC Class Codes: G06F 11/0727 in a storage system, e.g. in a DASD or network based storage system drivers for digital recording or reproducing units G06F3/06; circuits for error detection or correction within digital recording or reproducing units G11B20/18; 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], H04L67/1097
• CPC Class Codes: G06F 11/0766 Error or fault reporting or storing
• CPC Class Codes: G06F 11/1441 Resetting or repowering
• CPC Class Codes: G06F 11/1446 Point-in-time backing up or restoration of persistent data
• CPC Class Codes: G06F 11/324 Display of status information
• CPC Class Codes: G06F 13/24 using interrupt G06F13/32 takes precedence

Abstract

A method for restoring system configuration information of a network attached storage includes the steps of: setting system configuration information of an network attached storage as a backup file; registering an interrupt handler; pressing down an input key (16) to turn off a power switch (K1) and generate an interrupt signal; invoking the interrupt handler to process the interrupt signal and returning interrupt GPIO information; determining whether an operating system receives the interrupt GPIO information from the interrupt handler; sending a periodical voltage to a second pin (P2) for blinking a LED (L1) if the operating system receives the interrupt GPIO information from the interrupt handler; invoking the backup file to restore the system configuration information of the network attached storage; and sending a high voltage command to the second pin for powering off the LED, which indicates that the system configuration information has been restored.

Claims

1. A method for restoring system configuration information of a network attached storage, the network attached storage comprises a general purpose input/output (GPIO) device, the GPIO device comprises a first pin, a power switch connected to the first pin, a light emitting diode (LED) connected to the power switch, and a second pin connected to the LED, the method comprising the steps of:

setting system configuration information of the network attached storage as a backup file;

registering an interrupt handler;

pressing down an input key connected to the power switch to turn off the power switch and generate an interrupt signal in the first pin;

invoking the interrupt handler to process the interrupt signal and returning interrupt GPIO information;

determining whether an operating system of the network attached storage receives the interrupt GPIO information from the interrupt handler;

sending a periodical voltage to the second pin for blinking the LED if the operating system receives the interrupt GPIO information from the interrupt handler;

invoking the backup file to restore the system configuration information of the network attached storage; and

sending a high voltage command to the second pin for powering off the LED, which indicates that the system configuration information has been restored.

2. The method according to claim 1, wherein the step of invoking the interrupt handler to process the interrupt signal and returning interrupt GPIO information comprises the steps of:

processing the interrupt signal by executing a top half stack of the interrupt handler; and

processing the interrupt signal by executing a bottom half stack of the interrupt handler.

3. The method according to claim 2, wherein the step of processing the interrupt signal by the top half stack of the interrupt handler comprises the steps of:

receiving the interrupt signal;

determining whether the interrupt signal is a GPIO interrupt signal; and

configuring an interrupt symbol of the interrupt signal if the interrupt signal is a GPIO interrupt signal.

4. The method according to claim 3, wherein the step of processing the interrupt signal by the bottom half stack of the interrupt handler comprises the steps of:

resetting the interrupt symbol as zero; and

returning the interrupt GPIO information.