CN117093246B - Method for upgrading OTA AB partition of multiple operating systems in virtual machine - Google Patents
Method for upgrading OTA AB partition of multiple operating systems in virtual machine Download PDFInfo
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- CN117093246B CN117093246B CN202311352975.6A CN202311352975A CN117093246B CN 117093246 B CN117093246 B CN 117093246B CN 202311352975 A CN202311352975 A CN 202311352975A CN 117093246 B CN117093246 B CN 117093246B
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- 238000005192 partition Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 238000013500 data storage Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 3
- 229910002056 binary alloy Inorganic materials 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/70—Software maintenance or management
- G06F8/71—Version control; Configuration management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45562—Creating, deleting, cloning virtual machine instances
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45575—Starting, stopping, suspending or resuming virtual machine instances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention relates to the field of virtual machines, in particular to a method for upgrading a multi-operating system OTA AB partition in a virtual machine. The existing OTA AB upgrade is realized in a single operating system, the operating system cannot be automatically upgraded by remotely issuing an instruction, each virtual machine is required to be controlled and upgraded, the working efficiency is low, meanwhile, no security level management exists, and the system security is reduced; the recovery snapshot after the error upgrade can clean all the files after the upgrade system, the files cannot be stored, and the safety of the files is affected. The invention provides a method for upgrading a multi-operating system OTA AB partition in a virtual machine. According to the invention, the ATF is utilized to control the virtual machines to finish upgrading, so that the upgrading of batch virtual machines can be quickly finished, the working efficiency is greatly improved, meanwhile, the virtual machines are introduced with permission level judgment, the security level of the virtual machines is improved, the virtual machines can be cancelled and updated, the current system state of the virtual machines is reserved before updating, and the security of files is improved.
Description
Technical Field
The invention relates to the field of virtual machines, in particular to a method for upgrading a multi-operating system OTA AB partition in a virtual machine.
Background
The existing OTA AB upgrade is realized in a single operating system, the operating system cannot be automatically upgraded by a remote instruction, each virtual machine is required to control the upgrade, and the working efficiency is low; meanwhile, the security level management is not available, so that the virtual machine can easily acquire the authority which does not accord with the level, the security of the system is reduced, and the risk of information leakage exists; the recovery snapshot after the error upgrade can clean all files after the upgrade system, and the files cannot be stored, so that the working content is lost, and the safety of the files is affected.
Therefore, it is needed to develop a method for upgrading the OTA AB partition of multiple operating systems in a virtual machine, so as to overcome the drawbacks of the prior art that the virtual machine needs to be upgraded independently, without security level management, and snapshot recovery loses the working progress.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects that in the prior art, a virtual machine needs to be upgraded independently, no security level management is needed, and snapshot recovery loses the working progress, and the technical problem to be solved by the invention is to provide a method for upgrading a multi-operating system OTA AB partition in the virtual machine.
(2) Technical proposal
In order to solve the technical problems, the invention provides a method for upgrading an OTA AB partition of a multi-operating system in a virtual machine, which comprises the following steps:
the method comprises the steps that S1, a guide is started, an image file of a virtual machine is read, image file parameters are read, authority levels of the virtual machine are identified, the authority levels of the identified virtual machine are represented by binary values, corresponding authorities are marked as 1 if the authorities are available, the corresponding authorities are marked as 0 if the authorities are not available, the numerical value of each authority level is unique, meanwhile, authority content can be judged according to decimal numbers, the authority levels are used for supervising the authorities of the virtual machine and judging the updated range of the virtual machine, the operation exceeding the authority range is prevented, yopto is set to be in a recovery mode if the authority level is less than 0, upgrading is canceled, and a system corresponding to the authority level with the highest priority is selected for upgrading if the authority level is greater than 0;
s2, judging whether yopto is started to a normal mode, if not, loading the next image, if so, starting in the normal mode, and if the starting is successful, loading the yopto virtual machine 1, and if the starting fails, checking the rest times;
s3, when yopto has no remaining times, marking that the authority level is invalid, rolling back the transaction to the beginning of the guide, reading the guide groove again, and when the rest times exist, loading the next authority level;
s4, until the image is read, transmitting the transaction to an ATF, and starting the ATF to guide the virtual machine;
s5, the ATF firstly reads the guide slot element of the virtual machine 1, reads the parameter partition, checks whether the residual trial times are 0, enters a recovery mode if the residual trial times are 0, and enters a normal mode for starting if the residual trial times are not 0;
s6, inquiring whether normal starting is successful, carrying out system updating by the load yopto kernel and dtbo after the starting is successful, setting the normal starting equal to 0 if the normal starting is failed, closing the virtual machine at the same time, and going to the next virtual machine;
s7, circulating until all virtual machines complete system upgrading according to the corresponding authorities.
Specifically, the administrator can autonomously change the authority level of the virtual machine, and adjust the upgrading condition of the virtual machine according to the change of the application scene and the change of the specific use environment.
Specifically, yopto can also cancel the update, keep the current system state before updating, lock the system file before updating, limit editing, write the updated system in the new file at the same time, store the data written by the user in another file, cancel the update and delete the updated system file directly, write the data stored by the user in the system before updating at the same time.
Specifically, the ATF may also autonomously control viewing of virtual machines below the ATF permission level, may view file information in the virtual machines below the ATF permission level through the high permission level of the ATF itself, and may change file contents at the same time.
Specifically, the virtual machine with high authority level can also read the partition condition of the virtual machine with low authority level, such as data storage partition, specific parameters of the virtual machine, authority, task history and other information.
Specifically, the virtual machine with high authority level can actively control the virtual machine with low authority level to update partially, and when partial content in the virtual machine system with low authority level can not meet the requirement of a user, the virtual machine with high authority level can control the virtual machine with low authority level to update at any time without the limitation of the protection of the virtual machine with low authority level.
Specifically, the virtual machine may perform a startup status determination, determine an update condition and a startup condition of the current system according to the startup status of the current system, and when the new version of the system is incompatible with the virtual machine, determine the startup status of the virtual machine according to the current system operation condition, and send a prompt message for subsequent processing.
Specifically, the method also comprises the steps that the virtual machine can automatically correct errors, after the starting state of the virtual machine judges that the wrong prompt information is sent, the virtual machine can stop updating of the current system, delete file content of the new system, automatically restore to the file of the old system, restart the system and restore the system to the system of the old version.
Specifically, after the OTA packet is sent to the virtual machine with high-level authority, the virtual machine with high-level authority can control the virtual machine with low-level authority, and the virtual machine with low-level authority cannot control the update of the virtual machine with high-level authority even if the OTA packet is received, but only can control the virtual machine with lower authority level to update the system.
(3) Advantageous effects
According to the invention, the guide is used for reading the authority levels of different virtual machines, recording the upgradeable authority ranges of the different virtual machines, and then the ATF is used for controlling the virtual machines to complete the upgrade, so that the upgrade of the batch virtual machines can be completed rapidly, and the working efficiency is greatly improved.
Meanwhile, the authority level judgment is introduced into the virtual machine, and the authority level of the virtual machine is easier to judge by using binary digits to express the existence of the authority, so that the security level of the virtual machine is improved, and the system security of the virtual machine is protected.
The virtual machine can cancel the update, the virtual machine keeps the current system state before the update, locks the system file before the update, limits editing, writes the updated system in the new file, stores the data written by the user in another file, directly deletes the updated system file after the update, writes the data stored by the user in the system before the update, and cannot lose file content due to system recovery, thereby improving the safety of the file.
Drawings
FIG. 1 is a flow chart of the present invention for reading image files.
FIG. 2 is a flow chart of the method for updating a virtual machine according to the present invention.
FIG. 3 is a schematic view of the rights limitation of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
In the method for upgrading the OTA AB partition of the multiple operating systems in the virtual machine as shown in fig. 1-3, when a new version of system needs to be upgraded, a signal is firstly sent to control a guide to start, an image file of the virtual machine is read, image file parameters are read, authority levels of the virtual machine are identified, yopto is set as a recovery mode if the authority level is less than 0, upgrading is canceled, if the authority level is more than 0, the authority level with the highest priority is selected, the virtual machine is upgraded according to the highest authority of the virtual machine, the highest-priority system update is provided for the virtual machine, and the system with the corresponding level authority can be selected for each virtual machine.
As shown in fig. 1, a method for identifying authority level of a virtual machine specifically works as follows: the authority level of the virtual machine is represented by binary values, if the corresponding authority is marked as 1, if the corresponding authority is not marked as 0, the value of each authority is unique, and meanwhile, the authority content can be judged according to decimal numbers, the authority level is used for supervising the authority of the virtual machine and judging the updated range of the virtual machine, so that the operation exceeding the authority range is prevented.
The binary system is used for carrying out authority representation more intuitively, the system is easier to distinguish, the authority is 1, the authority is not 0, only two characters of 0 and 1 are used for representing, and the error rate is low.
Meanwhile, the user can independently change the authority level of the virtual machine, and adjust the upgrading condition of the virtual machine according to the change of the application scene and the change of the specific use environment, so that the flexibility is greatly improved, and the task requirements under various scenes can be met.
After judging the authority level of the virtual machine image file, judging whether yopto is started to a normal mode, if not, loading the next image, if so, starting in the normal mode, and if the starting is successful, loading the yopto virtual machine 1, and if the starting is failed, checking the rest times;
the specific working principle is as follows: when the starting fails, the virtual machine can automatically correct errors, and after the starting judgment of the virtual machine sends out wrong prompt information, the virtual machine can stop updating of the current system, delete file contents of the new system, automatically restore to files of the old system, restart the system and restore the system to the old system.
The backup is kept before the system is updated, so that the system can be withdrawn and updated at any time, the file content in the original system is not damaged, and the overall safety performance of the system is improved.
And when the number of times is not remained, marking that the permission level is invalid, rolling back the transaction to the beginning of the guide, reading the guide slot again, and when the number of times is remained, loading the next image.
Transmitting the transaction to the ATF until the image is read, and starting the virtual machine by the ATF;
as shown in fig. 2, in the method for updating an ATF-guided virtual machine, the ATF first reads the guiding slot element of the virtual machine 1, reads the parameter partition, checks whether the remaining number of attempts is=0, if it is 0, it enters the recovery mode, and if it is not 0, it enters the normal mode for starting;
inquiring whether normal starting is successful, loading yopto kernel and dtbo after the successful starting, setting normal starting=0 if the normal starting is failed, closing the virtual machine at the same time, and going to the next virtual machine;
the virtual machine can perform starting judgment, the update condition and the starting condition of the current system are judged according to the starting state of the current system, and when the new version of system is incompatible with the virtual machine, the starting judgment of the virtual machine can make judgment according to the running condition of the current system, and prompt information is sent to subsequent processing.
When the system is not started in the normal mode, yopto can cancel the update, the virtual machine keeps the current system state before updating, locks the system file before updating the system, limits editing, writes the updated system in the new file, stores the data written by the user in the other file, cancels the update, directly deletes the updated system file, and writes the data stored by the user in the system before updating.
And circularly reading the image and upgrading the system until all the virtual machines are upgraded according to the corresponding authorities.
The ATF can also autonomously control and view the virtual machine, can view file information in the virtual machine with the authority level lower than the ATF through the high authority level, and can change the file content.
The virtual machine with high authority level can also read the partition condition of the virtual machine with low authority level, such as data storage partition, specific parameters of the virtual machine, authority, task history and other information.
As shown in FIG. 3, in the method for managing the authority of the virtual machine, the virtual machine with high authority level can actively control the virtual machine with low authority level to perform partial update, and when partial content in the system can not meet the requirement of a user, the virtual machine with high authority level can control the virtual machine with low authority level to perform update at any time without being limited by the protection of the virtual machine with low authority level.
The virtual machine with high authority level can actively control the virtual machine with low authority level to perform partial update so as to better adapt to the change in the working environment, improve the applicability of the virtual machine, bring better experience to the user, and simultaneously perform partial update and consume time interruption without excessive intervention on the normal use of the user, thereby better serving the user.
After the OTA packet is sent to the virtual machine with high-level authority, the virtual machine with high-level authority can control the virtual machine with low-level authority, and the virtual machine with low-level authority can not control the virtual machine with high-level authority to update even if the OTA packet is received, but only control the virtual machine with lower authority level to update the system.
The problem that data leakage and the like are caused by that the virtual machine with low-level authority accesses data in the virtual machine with high-level authority is prevented, the safety level of the virtual machine is better improved, and the data safety is guaranteed.
The foregoing examples have shown only the preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A method for upgrading a multi-operating system OTA AB partition in a virtual machine is characterized by comprising the following specific steps:
the method comprises the steps that S1, a guide is started, an image file of a virtual machine is read, image file parameters are read, authority levels of the virtual machine are identified, the authority levels of the identified virtual machine are represented by binary values, corresponding authorities are marked as 1 if the authorities are available, the corresponding authorities are marked as 0 if the authorities are not available, the numerical value of each authority level is unique, authority content can be judged according to decimal numbers, the authority levels are used for supervising the authorities of the virtual machine and judging the updated range of the virtual machine, operation exceeding the authority range is prevented, yopto is set to be in a recovery mode if the authority level is less than 0, upgrading is canceled, and a system corresponding to the authority level with the highest priority is selected for upgrading if the authority level is greater than 0;
s2, judging whether yopto is started to a normal mode, if not, loading the next image, if so, starting in the normal mode, and if the starting is successful, loading the yopto virtual machine 1, and if the starting fails, checking the rest times;
s3, when yopto has no remaining times, marking that the authority level is invalid, rolling back the transaction to the beginning of the guide, reading the guide groove again, and when the rest times exist, loading the next authority level;
s4, until the image is read, transmitting the transaction to an ATF, and starting the ATF to guide the virtual machine;
s5, the ATF firstly reads the guide slot element of the virtual machine 1, reads the parameter partition, checks whether the residual trial times are 0, enters a recovery mode if the residual trial times are 0, and enters a normal mode for starting if the residual trial times are not 0;
s6, inquiring whether normal starting is successful, carrying out system updating by the load yopto kernel and dtbo after the starting is successful, setting the normal starting equal to 0 if the normal starting is failed, closing the virtual machine at the same time, and going to the next virtual machine;
s7, circulating until all virtual machines complete system upgrading according to the corresponding authorities;
the virtual machine with high authority level can actively control the virtual machine with low authority level to update partially, and when partial content in the virtual machine system with low authority level can not meet the requirement of a user, the virtual machine with high authority level can control the virtual machine with low authority level to update at any time without the limitation of the protection of the virtual machine with low authority level;
after the OTA packet is sent to the virtual machine with high-level authority, the virtual machine with high-level authority can control the virtual machine with low-level authority, and the virtual machine with low-level authority can not control the virtual machine with high-level authority to update even if the OTA packet is received, but only control the virtual machine with lower authority level to update the system.
2. The method for upgrading an OTA AB partition of a multiple operating system in a virtual machine according to claim 1, wherein an administrator can change the authority level of the virtual machine autonomously, and adjust the authority level of the virtual machine according to the application scene change and the change of the specific use environment.
3. The method for upgrading the multi-operating system OTA AB partition in the virtual machine according to claim 1, wherein yopto can also cancel the update, and the yopto retains the current system state before the update, locks the system file before the update, limits editing, writes the updated system in the new file, stores the data written by the user in another file, cancels the update, directly deletes the updated system file, and writes the data stored by the user in the system before the update.
4. The method for upgrading an OTA AB partition of a multiple operating system in a virtual machine according to claim 1, wherein the ATF is further capable of autonomously controlling viewing of the virtual machine below the ATF authority level, and is capable of viewing file information in the virtual machine below the ATF authority level through the high authority level of the ATF itself, and simultaneously modifying file contents.
5. The method for upgrading the OTA AB partition of the multiple operating systems in the virtual machine according to claim 1, wherein the virtual machine with the high authority level can also read the partition condition of the virtual machine with the low authority level, such as a data storage partition, specific parameters of the virtual machine, authority and task history information.
6. The method for upgrading the OTA AB partition of the multiple operating systems in the virtual machine according to claim 1, wherein the virtual machine can perform starting state judgment, judges the updating condition and the starting condition of the current system according to the starting state of the current system, and when the new version of system is incompatible with the virtual machine, the starting state judgment of the virtual machine makes judgment according to the running condition of the current system to send prompt information for subsequent processing.
7. The method for upgrading the OTA AB partition of a multi-operating system in a virtual machine according to claim 1, wherein the virtual machine can automatically correct errors, and after the starting state of the virtual machine judges that an error prompt message is sent, the virtual machine can stop updating of a current system, delete file contents of a new system, automatically restore the file into an old system, restart the system and restore the system into the old system.
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