CN109491837B - Log fault-tolerant processing method and device of nonvolatile internal memory - Google Patents
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- 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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1479—Generic software techniques for error detection or fault masking
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- 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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
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- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
Abstract
The invention discloses a log fault-tolerant processing method and a device of a nonvolatile internal memory, comprising the following steps: determining a virtual address of a log storage area in the nonvolatile internal memory by using an initialization module and mounting the nonvolatile internal memory; after power failure occurs, synchronizing original log data in a log storage system to a disk backup by using a fault-tolerant processing module; synchronizing the log data left in the nonvolatile memory into a disk backup by using a fault-tolerant processing module; and using the fault-tolerant processing module to mount the nonvolatile internal memory again and synchronize the disk backup to a log storage area of the nonvolatile internal memory. The technical scheme of the invention can perform fault-tolerant storage and backup on different log data or different types of log data stored in the nonvolatile internal memory, improve the reliability and the availability of the log management system and ensure the data safety.
Description
Technical Field
The present invention relates to the field of computers, and more particularly, to a method and an apparatus for fault-tolerant processing of a log in a nonvolatile memory.
Background
With the rapid development of the internet, the living standard of people is greatly improved. Meanwhile, mass data and service requirements are increased, and the server is widely used. When the server normally operates, a large amount of logs can be generated, the system logs can provide query and analysis for users, and meanwhile, when the server is down or has serious problems, the problems can be solved according to the logs. The system log is very important, and in case of sudden power failure of the server, the system log may not be recorded in time, resulting in log loss.
Aiming at the problems of low fault-tolerant rate and easy power failure loss of log records in the prior art, no effective solution is available at present.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and an apparatus for fault-tolerant processing of a log in a nonvolatile memory, which can perform fault-tolerant storage and backup on different log data or different types of log data stored in the nonvolatile memory, improve reliability and availability of a log management system, and ensure data security.
Based on the above object, an aspect of the embodiments of the present invention provides a fault-tolerant processing method for a log in a nonvolatile memory, including the following steps:
determining a virtual address of a log storage area in the nonvolatile internal memory by using an initialization module and mounting the nonvolatile internal memory;
after power failure occurs, synchronizing original log data in a log storage system to a disk backup by using a fault-tolerant processing module;
synchronizing the log data left in the nonvolatile memory into a disk backup by using a fault-tolerant processing module;
and using the fault-tolerant processing module to mount the nonvolatile internal memory again and synchronize the disk backup to a log storage area of the nonvolatile internal memory.
In some embodiments, determining a virtual address of a log storage area in the non-volatile memory and mounting the non-volatile memory includes:
determining a log storage area in a nonvolatile internal memory;
initializing a log storage area to obtain a physical address of the log storage area;
translating the physical address to a virtual address for use by the log storage system using a page table mechanism;
and mounting the log storage area of the nonvolatile internal memory to a log storage system according to the virtual address.
In some embodiments, initializing the log storage area is done by the BIOS.
In some embodiments, the physical addresses are stored in E820, and the physical addresses of the log storage area are obtained by parsing E820.
In some embodiments, synchronizing the log data left in the non-volatile memory to the disk backup using the fault tolerant processing module comprises: when the legacy log data exist in the nonvolatile internal memory, synchronizing the legacy log data to the disk backup; otherwise, the non-volatile memory is reinitialized.
In some embodiments, the reinitializing the non-volatile memory is formatting the non-volatile memory into a file system that may be used to store log data.
In some embodiments, the step of synchronizing the disk backup to the log storage area of the non-volatile internal memory is performed once per day.
In some embodiments, the operating system used is a linux system, the journal storage system is set at/var/log, and the disk backup is set at/var/log.
In another aspect of the embodiments of the present invention, a fault-tolerant processing apparatus for a log of a nonvolatile memory is further provided, including:
at least one processor; and
a memory storing program code executable by the processor, wherein the program code comprises:
the initialization module is used for determining a virtual address of a log storage area in the nonvolatile internal memory and mounting the nonvolatile internal memory; and
the fault-tolerant processing module is used for synchronizing original log data in the log storage system into a disk backup after power failure occurs; synchronizing the log data left in the nonvolatile internal memory to a disk backup; and the nonvolatile internal memory is reinstalled, and the disk backup is synchronized to the log storage area of the nonvolatile internal memory.
In another aspect of the embodiments of the present invention, a heterogeneous hybrid memory system is further provided, which includes the above-mentioned fault-tolerant processing apparatus for logs of the nonvolatile memory.
The invention has the following beneficial technical effects: the log fault-tolerant processing method and device for the nonvolatile memory provided by the embodiment of the invention determine the virtual address of the log storage area in the nonvolatile memory by using the initialization module and mount the nonvolatile memory, the original log data in the log storage system is synchronized to the disk backup by using the fault-tolerant processing module after the power failure occurs, the log data left in the nonvolatile memory is synchronized to the disk backup by using the fault-tolerant processing module, by using the technical scheme that the fault-tolerant processing module is used for re-mounting the nonvolatile internal memory and synchronizing the disk backup to the log storage area of the nonvolatile internal memory, fault-tolerant storage and backup can be performed on different log data or different types of log data stored in the nonvolatile internal memory, the reliability and the availability of a log management system are improved, and the data safety is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a fault-tolerant log processing method for a non-volatile memory according to the present invention;
FIG. 2 is a schematic flowchart illustrating steps executed by an initialization module of the fault-tolerant log processing apparatus for a non-volatile memory according to the present invention;
fig. 3 is a flowchart illustrating steps executed by a fault-tolerant processing module of the fault-tolerant log processing apparatus for a non-volatile internal memory according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be construed as limitations to the embodiments of the present invention, and the descriptions thereof in the following embodiments are omitted.
In view of the foregoing, a first aspect of the embodiments of the present invention provides an embodiment of a log fault-tolerant processing method, which is capable of performing fault-tolerant storage and backup on different log data or different types of log data stored in a nonvolatile internal memory. Fig. 1 is a schematic flowchart illustrating an embodiment of a log fault tolerance processing method for a non-volatile internal memory according to the present invention.
The log fault-tolerant processing method of the nonvolatile internal memory comprises the following steps:
step S101, an initialization module is used for determining a virtual address of a log storage area in a nonvolatile internal memory and mounting the nonvolatile internal memory;
step S103, after power failure occurs, the original log data in the log storage system is synchronized to a disk backup by using a fault-tolerant processing module;
step S105, synchronizing the log data left in the nonvolatile memory into a disk backup by using a fault-tolerant processing module;
step S107, using the fault-tolerant processing module to mount the nonvolatile memory again and synchronize the disk backup to the log storage area of the nonvolatile memory.
The embodiment of the invention can perform fault-tolerant processing on the user layer log in the heterogeneous hybrid memory system, and under the condition that the server in the heterogeneous hybrid memory system is suddenly powered off, the disk log is transferred to the nonvolatile memory NVM to ensure that the log content is not lost under the condition of sudden power off, so that the reliability and the usability of the system log are improved.
In some embodiments, determining a virtual address of a log storage area in the non-volatile memory and mounting the non-volatile memory includes:
determining a log storage area in a nonvolatile internal memory;
initializing a log storage area to obtain a physical address of the log storage area;
translating the physical address to a virtual address for use by the log storage system using a page table mechanism;
and mounting the log storage area of the nonvolatile internal memory to a log storage system according to the virtual address.
The steps of reserving an area for storing the system log in the non-volatile memory storage device NVM and initializing the area to backup the system log may specifically be seen in fig. 2: after the BIOS finishes the initialization operation of the hardware part, loading a starting kernel, analyzing an E820 table, acquiring a physical memory area of a nonvolatile memory, reserving a log area of a storage system, converting the log area into a virtual address through a page table mechanism, and then loading a block device driver.
In some embodiments, initializing the log storage area is done by the BIOS.
In some embodiments, the physical addresses are stored in E820, and the physical addresses of the log storage area are obtained by parsing E820.
In some embodiments, synchronizing the log data left in the non-volatile memory to the disk backup using the fault tolerant processing module comprises: when the legacy log data exist in the nonvolatile internal memory, synchronizing the legacy log data to the disk backup; otherwise, the non-volatile memory is reinitialized.
The specific steps of the fault-tolerant processing module are shown in fig. 3: firstly, detecting the data state in the NVM, if the data state is not changed (the state before power failure is maintained), directly mounting the NVM to a/var/log directory (namely a current default log storage area), and then synchronizing the log to the/var/log. hdd directory (namely an external storage disk) by using a mirror image data backup tool (such as rsync); if the NVM has no data, the log in/var/log is copied to/var/log.hdd directory, then the NVM is mounted under the/var/log directory, and the log is synchronized from log.hdd to/var/log directory with rsync tool. The log fault tolerance method may be performed once per day, synchronized by rsync/var/log and/var/log. The relevant configuration files are deposited in/etc/cron.
In some embodiments, the reinitializing the non-volatile memory is formatting the non-volatile memory into a file system that may be used to store log data.
In some embodiments, the step of synchronizing the disk backup to the log storage area of the non-volatile internal memory is performed once per day.
In some embodiments, the operating system used is a linux system, the journal storage system is set at/var/log, and the disk backup is set at/var/log.
It can be seen from the foregoing embodiments that, in the fault-tolerant processing method for a log in a nonvolatile memory according to the embodiments of the present invention, an initialization module is used to determine a virtual address of a log storage area in the nonvolatile memory and mount the virtual address to the nonvolatile memory, after a power failure occurs, a fault-tolerant processing module is used to synchronize original log data in a log storage system to a disk backup, the fault-tolerant processing module is used to synchronize log data left in the nonvolatile memory to a disk backup, the fault-tolerant processing module is used to re-mount the nonvolatile memory and synchronize the disk backup to the log storage area of the nonvolatile memory, so that fault-tolerant storage and backup can be performed on different log data or different types of log data stored in the nonvolatile memory, and reliability and availability of a log management system are improved, and the data security is guaranteed.
It should be particularly noted that, in the foregoing embodiments of the log fault-tolerant processing method for the non-volatile memory, the steps may be mutually intersected, replaced, added, and deleted, and therefore, the log fault-tolerant processing method for the non-volatile memory based on these reasonable permutation and combination transformations shall also belong to the scope of the present invention, and shall not limit the scope of the present invention to the described embodiments.
In view of the foregoing, a second aspect of the embodiments of the present invention provides an embodiment of a log fault-tolerant processing apparatus capable of performing fault-tolerant storage and backup on different types of log data or different types of log data stored in a nonvolatile internal memory. Fig. 2 is a schematic structural diagram of an embodiment of the fault-tolerant log processing apparatus for a non-volatile internal memory provided in the present invention.
The device comprises:
at least one processor; and
a memory storing program code executable by the processor, wherein the program code comprises:
the initialization module is used for determining a virtual address of a log storage area in the nonvolatile internal memory and mounting the nonvolatile internal memory; and
the fault-tolerant processing module is used for synchronizing original log data in the log storage system into a disk backup after power failure occurs; synchronizing the log data left in the nonvolatile internal memory to a disk backup; and the nonvolatile internal memory is reinstalled, and the disk backup is synchronized to the log storage area of the nonvolatile internal memory.
The devices and apparatuses disclosed in the embodiments of the present invention may be various electronic terminal apparatuses, such as a mobile phone, a Personal Digital Assistant (PDA), a tablet computer (PAD), a smart television, and the like, or may be a large terminal apparatus, such as a server, and therefore the scope of protection disclosed in the embodiments of the present invention should not be limited to a specific type of device and apparatus. The client disclosed in the embodiment of the present invention may be applied to any one of the above electronic terminal devices in the form of electronic hardware, computer software, or a combination of both.
The computer-readable storage media (e.g., memory) described herein may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. By way of example, and not limitation, nonvolatile memory can include Read Only Memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which can act as external cache memory. By way of example and not limitation, RAM is available in a variety of forms such as synchronous RAM (DRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The storage devices of the disclosed aspects are intended to comprise, without being limited to, these and other suitable types of memory.
In view of the foregoing, a third aspect of the embodiments of the present invention provides an embodiment of a heterogeneous hybrid memory system capable of performing fault-tolerant storage and backup on different log data or different types of log data stored in a nonvolatile memory. The heterogeneous hybrid memory system comprises the log fault-tolerant processing device of the nonvolatile memory.
Various exemplary heterogeneous hybrid memory systems described in connection with the disclosure herein may be implemented or performed with the following components designed to perform the functions described herein: a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP, and/or any other such configuration.
It can be seen from the foregoing embodiments that, in the log fault-tolerant processing apparatus of a nonvolatile memory and the heterogeneous hybrid memory system provided in the embodiments of the present invention, an initialization module is used to determine a virtual address of a log storage area in the nonvolatile memory and mount the nonvolatile memory, after a power failure occurs, a fault-tolerant processing module is used to synchronize original log data in the log storage system to a disk backup, a fault-tolerant processing module is used to synchronize log data left in the nonvolatile memory to a disk backup, and a fault-tolerant processing module is used to re-mount the nonvolatile memory and synchronize the disk backup to the log storage area of the nonvolatile memory, so that fault-tolerant storage and backup can be performed on different log data or different types of log data stored in the nonvolatile memory, and reliability and availability of a log management system are improved, and the data security is guaranteed.
It should be particularly noted that, in the embodiments of the log fault-tolerant processing apparatus for a nonvolatile memory and the heterogeneous hybrid memory system, the working process of each module is specifically described by using the embodiment of the log fault-tolerant processing method for a nonvolatile memory, and those skilled in the art can easily think that these modules are applied to other embodiments of the log fault-tolerant processing method for a nonvolatile memory. Of course, since all steps in the embodiment of the method for processing a log with fault tolerance of a non-volatile memory may be intersected, replaced, added, and deleted, these log fault tolerance processing apparatuses and heterogeneous hybrid memory systems that are transformed by reasonable permutation and combination of the steps in the non-volatile memory also belong to the scope of the present invention, and the scope of the present invention should not be limited to the embodiment.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items. The sequence numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A fault-tolerant processing method for logs in a nonvolatile internal memory is characterized by comprising the following steps:
determining a virtual address of a log storage area in the nonvolatile internal memory by using an initialization module and mounting the nonvolatile internal memory;
after power failure occurs, synchronizing original log data in a log storage system to a disk backup by using a fault-tolerant processing module;
using the fault-tolerant processing module to synchronize the log data left in the nonvolatile memory into the disk backup;
and using the fault-tolerant processing module to mount the nonvolatile internal memory again and synchronize the disk backup to the log storage area of the nonvolatile internal memory.
2. The method of claim 1, wherein determining the virtual address of the log storage area in non-volatile memory and mounting non-volatile memory comprises:
determining a log storage area in a nonvolatile internal memory;
initializing the log storage area to obtain a physical address of the log storage area;
translating the physical address to a virtual address for use by a log storage system using a page table mechanism;
and mounting the log storage area of the nonvolatile internal memory to the log storage system according to the virtual address.
3. The method of claim 2, wherein initializing the log storage area is done by a BIOS.
4. The method of claim 2, wherein the physical address is stored in E820, and wherein the physical address of the log storage area is obtained by parsing E820.
5. The method of claim 1, wherein synchronizing the log data left in the non-volatile memory to the disk backup using the fault tolerant processing module comprises: when the legacy log data exists in the nonvolatile internal memory, synchronizing the legacy log data to the disk backup; otherwise, the non-volatile memory is reinitialized.
6. The method according to claim 5, wherein the re-initializing the non-volatile memory is to format the non-volatile memory into a file system that can be used for storing log data.
7. The method of claim 1, wherein the step of synchronizing the disk backup to the log storage area of non-volatile memory is performed once per day.
8. The method of any one of claims 1-7, wherein the operating system used is a linux system, the journal storage system is set at/var/log, and the disk backup is set at/var/log.
9. A fault-tolerant log processing apparatus for a nonvolatile memory, comprising:
at least one processor; and
a memory storing program code executable by the processor, wherein the program code comprises:
the initialization module is used for determining a virtual address of a log storage area in the nonvolatile internal memory and mounting the nonvolatile internal memory; and
the fault-tolerant processing module is used for synchronizing original log data in the log storage system into a disk backup after power failure occurs; synchronizing the log data left in the nonvolatile internal memory to the disk backup; and reinstalling the nonvolatile internal memory and synchronizing the disk backup to the log storage area of the nonvolatile internal memory.
10. A heterogeneous hybrid memory system, comprising the log fault tolerant processing apparatus of the nonvolatile memory according to claim 9.
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