JP2008171139A - Storage system test apparatus and test method - Google Patents

Abstract

A test apparatus and a test method for a storage system to which a predetermined magnetic disk device is connected are provided.
A test program for testing a disk array in which a plurality of magnetic disk devices HDD001 and others are fiber channel connected, and a connection state when the test program is connected to the disk array and communication with the disk array is impossible for a predetermined time or more. The host bus adapters 7 to 10 for issuing LIP commands for initializing and reconnecting, and switch means for turning on and off the connection between the adapters 7 to 10 and the disk array of the storage system 201. A recognition function for recognizing the number of connected magnetic disk devices, a reconnection function for reconnecting after disconnecting the disk array by the switch means when the number recognized by the recognition function is not a predetermined number, A test function that performs a test after an arbitrary time has elapsed after reconnection.
[Selection] Figure 1

Description

  The present invention relates to a storage system test apparatus and a test method for mounting a plurality of magnetic disk devices, and more particularly to a storage system test apparatus and a test method for connecting a plurality of magnetic disk devices via a fiber channel.

  2. Description of the Related Art Business computer systems in recent years tend to improve processing speed and storage capacity, and employ a configuration in which a storage system including a disk array composed of a plurality of magnetic disk devices is connected as an external storage device.

  In the storage system, for example, 32 magnetic disk devices (HDDs) are RAID-connected to form one disk array, and by mounting a plurality of these disk arrays, for example, a terabyte or picobyte level external storage device is configured. is doing. In addition, a fiber channel using an optical fiber is adopted as an internal and external interface for speeding up data transfer. The disk array is a disk array in which a plurality of magnetic disk devices are logically bundled so as to be seen as one device when viewed from a host device.

  A storage system in which a large number of magnetic disk devices are connected in this manner is connected to a test computer installed with a test program at the time of manufacture, and tests are performed on a plurality of magnetic disk devices connected by the test program of the test computer. Is called.

Note that the following patent documents are listed as documents describing the technology related to the test apparatus of the storage system in which the large number of magnetic disk devices are mounted.
JP-A-5-234343

  A test computer for fiber channel connection of a storage system to which a large number of magnetic disk devices are connected as described above has a plurality of test programs running on an OS (operating system) such as LINUX (registered trademark) or Windows (registered trademark). A serial interface that directly controls various test items from input / output of signals to the magnetic disk device and from start to finish, and the plurality of magnetic disk devices expands a fiber channel connection specification called FC-AL (Fibre Channel Arbitrated Loop) Connected according to the standard.

  In this test device, the test computer repeatedly starts and stops the storage system, etc., but since the storage system connects many magnetic disk devices, depending on the restart timing, it can be connected to all magnetic disk devices. The system started up without being able to be established, and there was a problem that the storage system could not be accurately tested.

  An object of the present invention is to provide a storage system test apparatus and a test method capable of easily establishing and testing a connection of a large number of magnetic disk devices without causing the above-mentioned problems.

  To achieve the above object, the present invention provides a test means for testing a disk array to which a plurality of magnetic disk devices are connected, a connection means for connecting the test means and the disk array, and the connection means and the disk. A storage system test apparatus comprising switch means for turning on / off connection with an array, the number of magnetic disk devices included in the disk array connected via the connection means and the switch means being recognized, When the connection means is disconnected from the disk array by using the switch means, the connection means is connected to the disk array by disconnecting the disk array by the switch means. When initializing and reconnecting to the disk array, the test means after an arbitrary time has elapsed since the reconnection The first feature to be tested using.

  Furthermore, the present invention provides a test means for testing a disk array connected to a plurality of magnetic disk devices, a connection means for connecting the test means and the disk array, and an on / off connection between the connection means and the disk array. A storage system test method comprising: switching means for performing control; and control means for controlling the means, wherein the number of magnetic disk devices included in the disk array connected by the control means via the connection means and the switching means The step of recognizing the disk array, the step of reconnecting after disconnecting the connection means and the disk array using the switch means when the recognized number is not a predetermined number, and disconnecting the disk array by the switch means When the connection means initializes the connection state with the disk array and reconnects with the disk array, To perform and performing tests using the test means after arbitrary time Reconnect the second feature.

  The storage system test apparatus and the test method according to the present invention determine whether or not the number of connected magnetic disk devices is a predetermined number. If the number is not the predetermined number, the switch means connects the disk array and the connection means. The storage system in a state where all the magnetic disk devices are connected can be tested by operating so that the test is performed after the disk is temporarily disconnected and then reconnected.

Hereinafter, a storage system test apparatus and a test method according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of a test apparatus of a storage system to which this embodiment is applied, and FIG. 2 is a flow showing the operation of a test program according to this embodiment.
<Configuration>

  As shown in FIG. 1, the storage system test apparatus according to the present embodiment includes a PC 100 that is a test computer connected to a storage system 201 having a plurality of magnetic disk devices HDD001 to HDD128 to be tested, And an adapter box 200 to which the storage system 201 is connected.

  The adapter box 200 is connected to the retiming circuit 102 including a plurality of on / off switches connected via the fiber channel 20 for each disk array composed of 32 magnetic disk devices, and the retiming circuit 102. An HBC control package 101 for controlling the power supply of the box 200 is configured.

  The PC 100 includes a general hardware configuration such as a CPU / memory / magnetic disk device / display, and the software configuration includes an application 4 including an HDD test program 1 stored in the magnetic disk device, and the application 4 LINUX kernel 3 for controlling software and hardware, and this LINUX kernel 3 including the OS is connected to retiming circuit 102 of adapter box 200 individually. 10, a host bus adapter driver 6 for controlling the host bus adapters 7 to 10, a SCSI driver 5 for controlling the driver 6, and a control signal for controlling the retiming circuit 102 PIO port 12 that outputs It consists PIO driver 11 for controlling the O port 12. Further, the PC 100 stores in advance the number of magnetic disk devices connected to the disk array of the storage system 201 to be tested.

  The host bus adapters 7 to 10 monitor signals transmitted / received to / from the disk array connected via the fiber channel 20, and if the signal cannot be transmitted / received to / from the disk array for a predetermined time (timeout time), the fiber channel 20 is turned on. It has a function of issuing a LIP (Loop Initialization Primitive) command that attempts to reconnect by initializing the loop connection through the network.

The storage system 201 comprises one disk array in units of magnetic disk devices HDD001 to HDD032 / magnetic disk devices HDD033 to HDD064 / magnetic disk devices HDD065 to HDD096 / magnetic disk devices HDD097 to HDD128. The constituent magnetic disk devices are connected by a fiber channel 20 including an optical fiber.
<Operation>

  In the storage system test apparatus configured as described above, the PC 100 is normally connected to the storage system 201 via the adapter box 200 via the fiber channel 20, and the test program 1 of the PC 100 includes the host bus adapters 7 to 10 and the retiming. A test signal is supplied to each disk array of the storage system 201 via the circuit 102, and the test program 1 analyzes the response signal from each disk array, thereby operating the storage system.

  In this test apparatus, as described above, the storage system 201 constitutes a single disk array in which a large number (32 units) of magnetic disk apparatuses are connected via a fiber channel, and the test program 1 of the PC 100 performs various tests. If the start and stop of the storage system 201 are frequently repeated to perform storage, the storage system 201 may start up in a state where all the magnetic disk devices are not connected depending on the drive timing of the magnetic disk device. Of course, the storage system 201 cannot be accurately tested.

  Therefore, in the present embodiment, after the test program 1 of the PC 100 starts up the storage system 201 corresponding to a plurality of test items, the magnetic disk devices connected to each disk array of the storage system 201 as shown in FIG. Step S01 for recognizing the number of disks, and whether or not the number of connected magnetic disk devices recognized in Step S01 for each disk array is a preset number, and will be described later when it is determined that the number is set. In step 02, the process proceeds to step S05. When a predetermined number of magnetic disk devices cannot be detected in step S02, the PIO driver 11 temporarily turns off the corresponding on / off switch of the retiming circuit 102 via the PIO port 12. A step S03 for issuing a signal to be reconnected (re-on) later; After the reconnection in step S03, a predetermined timeout time plus time (to establish a connection with the magnetic disk device) is secured in order to secure the fiber channel loop connection reconnection time by issuing the LIP command from the host bus adapters 7-10. Necessary and sufficient predetermined time) Step S04 for monitoring the progress, Step S05 for starting the test program for the next item after the lapse of time in Step S04, and whether all test items have been completed after the test program for Step S05 If it is determined that the process has been completed, the process is terminated. If it is determined that the process has not been completed, step S06 is returned to step S06.

  As a result, the system determines whether or not all the magnetic disk devices of the storage system 201 are recognized from the host each time the storage system 201 is restarted. If not, the corresponding on / off switch of the retiming circuit 102 In addition, by monitoring the predetermined timeout time plus the elapse of time, initializing the loop connection by the host bus adapter and performing the test after the reconnection, all the magnetic disk devices of the storage system 201 are transferred to the upper test program. Can be recognized and tested. In the embodiment, the example in which the test of the next test item in step S05 is started after the timeout time in step S04 has elapsed has been described. However, after step 04, the connection of the magnetic disk device is again recognized. It may be configured.

  As described above, in the storage system test apparatus according to the present embodiment, the test means determines whether or not the number of connected magnetic disk devices is a predetermined number. The connection with the connection means is temporarily disconnected and then reconnected, so that the connection means re-connects the magnetic disk device with a reconnection command and is necessary and sufficient to establish a connection with the magnetic disk device. By operating so that the test is performed after a lapse of time, it is possible to test the storage system in a state where all the magnetic disk devices are connected.

  In the storage system test apparatus according to the present embodiment, when the HDD test program 1 detects the number of connected magnetic disk apparatuses in all of the plurality of disk arrays of the storage system 201 and the detected number is less than the predetermined number. All the on / off switches of the retiming circuit 102 may be turned off or on, or only the on / off switches connected to the disk array whose number is not enough may be turned off or on.

1 is a configuration diagram of a storage system test apparatus according to an embodiment of the present invention. FIG. The flowchart which shows operation | movement of the test program by this embodiment.

Explanation of symbols

  1: Test program, 4: Application, 5: SCSI driver, 6: Host bus adapter driver, 7-10: Host bus adapter, 11: PIO driver, 12: PIO port, 20: Fiber channel, 101: HBC control package, 102: retiming circuit, 200: adapter box, 201: storage system, HDD001 to HDD128: magnetic disk device.

Claims (2)

Test means for testing a disk array to which a plurality of magnetic disk devices are connected, connection means for connecting the test means and the disk array, and switch means for turning on / off the connection between the connection means and the disk array A storage system testing device comprising:
Recognizing the number of magnetic disk devices included in the disk array connected via the connection means and the switch means;
Reconnect after disconnecting the connection means and the disk array using the switch means when the recognized number is not a predetermined number,
When the connection means initializes the connection state with the disk array by disconnecting from the disk array by the switch means and reconnects to the disk array, a test is performed using a test means after an arbitrary time has elapsed since the reconnection. Storage system testing equipment to perform. Test means for testing a disk array to which a plurality of magnetic disk devices are connected, connection means for connecting the test means and the disk array, switch means for turning on and off the connection between the connection means and the disk array, A storage system testing method comprising: control means for controlling the means;
The control means is
Recognizing the number of magnetic disk devices included in the disk array connected via the connection means and the switch means;
Reconnecting after disconnecting the connection means and the disk array using the switch means when the recognized number is not a predetermined number;
When the connection means initializes the connection state with the disk array by disconnecting from the disk array by the switch means and reconnects to the disk array, a test is performed using a test means after an arbitrary time has elapsed since the reconnection. And a storage system test method for performing the process.

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