CN112860493B - Linux virtual machine cloud packing partition chain-breaking protection method, system and medium - Google Patents
Linux virtual machine cloud packing partition chain-breaking protection method, system and medium Download PDFInfo
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
Abstract
The invention discloses a Linux virtual machine cloud packing partition chain-breaking protection method, a system and a medium, wherein the method comprises the following steps: after a chain breakage protection starting instruction is obtained, a memory disc is created, and a cloud packing partition is cloned to the memory disc; switching a root partition to the memory disk; if the switching is successful, modifying the name of the cloud disk root partition and operating a system on the memory disk; and synchronizing the memory disc file to the cloud disc according to a preset time interval. The method comprises the steps of firstly creating a memory disk, cloning a cloud packing partition into the memory disk, then switching a root partition into the memory disk, and synchronizing a memory disk file to the cloud disk according to a preset time interval by an operation system in the memory disk; namely, the root partition of the cloud disk is transferred to the memory disk and the system is operated in the memory disk, so that the virtual machine operating system can normally operate when the chain of the root partition of the cloud disk is broken. The embodiment of the invention can be widely applied to the technical field of computers.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a Linux virtual machine cloud packing partition chain breaking protection method, a Linux virtual machine cloud packing partition chain breaking protection system and a Linux virtual machine cloud packing partition chain breaking protection medium.
Background
In a virtualization environment, after a physical disk where a root partition of a virtual machine linux system is located is offline or has an error, a scene exists that a process running in the root partition needs to be guaranteed not to be interrupted, a root partition file system cannot become read-only, and a virtual machine operating system can run normally, such as restarting a file, reading and writing the file, starting and closing related services, and the like. The existing cloud disk high-availability technology can only protect the read-write condition of a data partition, and under a virtualization environment, if a disk link of a root partition is disconnected, a virtual machine operating system is abnormal.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method, a system, and a medium for protecting a Linux virtual machine cloud disk partition broken link, where in the method, a virtual machine operating system can normally run when the cloud disk partition broken link occurs.
In a first aspect, an embodiment of the present invention provides a Linux virtual machine cloud packing partition chain breakage protection method, including the following steps:
after a chain scission protection starting instruction is obtained, a memory disc is created, and a cloud packing partition is cloned to the memory disc;
switching a root partition to the memory disk;
if the switching is successful, the cloud disk root partition name is modified and the system is operated in the memory disk;
and synchronizing the memory disc file to the cloud disc according to a preset time interval.
Optionally, the creating a memory disk and cloning the cloud disk partition to the memory disk are implemented by a logical volume management mirroring technology.
Optionally, the creating a memory disk and cloning a cloud disk partition to the memory disk are implemented by a logical volume management mirroring technology, including the steps of:
acquiring cloud packing partition information; the cloud packing partition information comprises logical volume information;
determining whether the memory disk can be successfully created or not according to the cloud disk partition information and the system memory;
if the memory disk is successfully created, creating a logical volume management mirror image of the memory disk and the cloud disk root partition;
and setting a read-write speed, and cloning the cloud packing to a memory disc in a partitioned manner.
Optionally, the determining whether the memory disk can be successfully created according to the cloud disk partition information and the system memory includes:
sequentially determining whether the cloud disk root partition is a logical volume, whether a system memory is larger than a memory required by the cloud disk root partition and whether the space of a logical volume group of the cloud disk root partition meets the space required by a logical volume management mirror image according to the cloud disk root partition information and the system memory;
if the cloud disk root partition is a logical volume, the system memory is larger than the memory required by the cloud disk root partition, and the space of the cloud disk root partition logical volume group meets the space required by a logical volume management mirror image, determining that a memory disk can be successfully created;
otherwise, determining to finish creating the memory disk.
Optionally, the synchronizing the memory disk file to the cloud disk includes:
acquiring the names of a logical volume, a volume group and a cloud disk;
detecting whether the cloud disk is valid;
if the cloud disk magnetic disk is valid, determining whether the cloud disk is mounted;
if the cloud disk is mounted, unloading the cloud disk and acquiring the cloud disk identification information;
and repairing the cloud disk file system and setting the cloud disk identification information to complete file synchronization.
Optionally, the file synchronization comprises the steps of:
generating a first exclusion list;
synchronizing by adopting a file synchronization tool;
if the synchronization is successful, generating a secondary exclusion list;
determining whether the primary exclusion list is the same as the secondary exclusion list;
and if the primary exclusion list is different from the secondary exclusion list, deleting the difference file of the cloud disk.
Optionally, the method further comprises: if the file synchronization fails, the file synchronization is executed again.
In a second aspect, an embodiment of the present invention provides a Linux virtual machine cloud packing partition chain breakage protection system, including:
the system comprises a cloning module, a starting module and a judging module, wherein the cloning module is used for creating a memory disc and cloning a cloud packing partition to the memory disc after acquiring a chain breaking protection starting instruction;
a switching module, configured to switch the root partition to the memory disk;
the operation module is used for modifying the name of the cloud disk root partition and operating the system in the memory disk if the switching is successful;
and the synchronization module is used for synchronizing the memory disc file to the cloud disc according to a preset time interval.
In a third aspect, an embodiment of the present invention provides a Linux virtual machine cloud packing partition chain breakage protection system, including:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the Linux vdisk partition delinking protection method as recited in claim above.
In a fourth aspect, an embodiment of the present invention provides a storage medium, where a processor-executable program is stored, where the processor-executable program is configured to execute the above method for protecting partition broken link of cloud packing of a Linux virtual machine when executed by a processor.
The implementation of the embodiment of the invention has the following beneficial effects: the method comprises the steps of firstly creating a memory disk, cloning a cloud packing partition into the memory disk, then switching a root partition into the memory disk, and synchronizing a memory disk file to the cloud disk according to a preset time interval by an operation system in the memory disk; namely, the root partition of the cloud disk is transferred to the memory disk and the system is operated in the memory disk, so that the virtual machine operating system can normally operate when the chain of the root partition of the cloud disk is broken.
Drawings
Fig. 1 is a schematic flow chart illustrating steps of a Linux virtual machine cloud packing partition chain breakage protection method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart illustrating steps of creating a memory disk and cloning a root partition to the memory disk according to an embodiment of the present invention;
fig. 3 is a schematic flowchart illustrating a procedure of synchronizing a memory disk file to a cloud disk according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a file synchronization method according to an embodiment of the present invention;
fig. 5 is a block diagram of a Linux virtual machine cloud packing partition chain breakage protection system according to an embodiment of the present invention;
fig. 6 is a block diagram of another Linux vm cloud packing partition chain breakage protection system according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. For the step numbers in the following embodiments, they are set for convenience of illustration only, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a method for protecting a Linux virtual machine cloud packing partition chain rupture, which includes the following steps.
S110, after a chain breakage protection starting instruction is obtained, a memory disc is created, and a cloud packing partition is cloned to the memory disc;
s120, switching the root partition to the memory disc;
s130, if the switching is successful, the name of the cloud disk root partition is modified, and the system is operated in the memory disk;
and S140, synchronizing the memory disc file to the cloud disc according to a preset time interval.
Specifically, the method can be encapsulated into a functional service and issued in the form of a service, so that the functional service can be started in a manner common to operating systems; in addition, whether the starting is started automatically or manually can be set.
It should be noted that, in the cloning process, the file and the name of the cloud disk root partition are cloned into the memory disk, so the modified cloud disk root partition name cannot be the same as the original cloud disk root partition name.
It should be noted that the size of the preset time interval is determined according to actual situations, and the embodiment of the present invention is not particularly limited.
As will be understood by those skilled in the art, after the cloud disk is disconnected and reconnected, the file of the memory disk also needs to be saved in the cloud disk, and the physical disk is mounted again to perform the file-level data synchronization operation.
The implementation of the embodiment of the invention has the following beneficial effects: the method comprises the steps of firstly creating a memory disk, cloning a cloud packing partition into the memory disk, then switching a root partition into the memory disk, and synchronizing a memory disk file to the cloud disk according to a preset time interval by an operation system in the memory disk; the method is characterized in that the root partition of the cloud disk is transferred to the memory disk and runs in the memory disk, so that the virtual machine operating system can run normally when the cloud disk root partition is broken.
Optionally, the creating a memory disk and cloning a cloud disk partition to the memory disk are implemented by a logical volume management mirroring technology.
Specifically, the logical volume management mirroring technology can be used for smoothly switching the running system from the cloud disk root partition to the memory disk.
Optionally, the creating a memory disk and cloning a cloud disk partition to the memory disk are implemented by a logical volume management mirroring technology, including the steps of:
s111, obtaining partition information of the cloud packing; the cloud packing partition information comprises logical volume information; specifically, the logical volume information includes the relationship and size of the logical volume and the volume group, and the cloud disk root partition information further includes configuration information of a user.
And S112, determining whether the memory disc can be successfully created or not according to the cloud disc partition information and the system memory.
And S113, if the memory disk is successfully created, creating a logical volume management mirror image of the memory disk and the cloud disk root partition.
And S114, setting the read-write speed, and cloning the cloud packing to a memory disc in a partition mode. Specifically, the read-write speed is set according to specific practical application and experience values, so that blockage can be prevented.
Optionally, the determining whether the memory disk can be successfully created according to the cloud disk partition information and the system memory includes:
s1121, sequentially determining whether the cloud disk root partition is a logical volume, whether a system memory is larger than a memory required by the cloud disk root partition and whether the space of a cloud disk root partition logical volume group meets the space required by a logical volume management mirror image according to the cloud disk root partition information and the system memory;
s1122, if the cloud disk root partition is a logic volume, a system memory is larger than a memory required by the cloud disk root partition, and the space of a cloud disk root partition logic volume group meets the space required by a logic volume management mirror image, determining that a memory disk can be successfully created;
s1123, otherwise, determining to finish creating the memory disc.
Specifically, as shown in fig. 2, first, root partition information is obtained, where the root partition information includes logical volume information and user configuration information; then, judging whether the block device where the root partition is located is a logical volume, and if not, ending the creation of the memory disk; if the system memory is the logical volume, checking whether the system memory is enough, and if the system memory is smaller than the size of the root partition, finishing the creation of the memory disk; if the system memory is larger than the size of the root partition, checking whether a volume group where the logical volume is located has enough reserved space for establishing a logical volume management root partition mirror image, and if the logical volume group does not have enough reserved space, finishing the establishment of the memory disk; if the reserved space is enough, loading the kernel module, and creating a memory disc according to user configuration; adding a memory disk into a volume group where a root partition is located, and simultaneously creating a logical volume management mirror image together with the root partition; setting a reading-writing speed according to user configuration parameters to complete data synchronization from the cloud disk to the memory disk; after the memory disks are synchronized, the cloud disks are removed from the root partition mirror images, and the operation of the system is maintained only by using the memory disks; and modifying the logical volume management metadata and recreating the cloud disk block device.
Optionally, the synchronizing the memory disk file to the cloud disk includes:
s141, acquiring a logical volume, a volume group and a cloud disk name;
s142, detecting whether the cloud disk is effective or not;
s143, if the cloud disk is valid, determining whether the cloud disk is mounted;
s144, if the cloud disk is mounted, unloading the cloud disk and acquiring identification information of the cloud disk;
s145, repairing the cloud disk file system and setting the cloud disk identification information to complete file synchronization.
Optionally, the method further comprises: if the file synchronization fails, the file synchronization is executed again.
Specifically, as shown in fig. 3, first, the logical volume, the volume group, and the cloud disk name are acquired, and if the acquisition is unsuccessful, the next-stage file synchronization is performed; if the acquisition is successful, checking whether the cloud disk is valid, and if the cloud disk is invalid, synchronizing the next-stage file; if the cloud disk identification information is valid, checking whether the cloud disk is mounted, if so, unloading the cloud disk, and acquiring the cloud disk identification information, wherein the identification information comprises a universal unique identification code and a type; if the cloud disk identification information is not mounted, directly acquiring the cloud disk identification information; modifying a cloud disk file system and setting a universal unique identification code; carrying out file synchronization, and unloading the cloud disk and carrying out file synchronization of the next period if the synchronization is successful; if the synchronization is unsuccessful, performing secondary synchronization attempt, and if the synchronization is unsuccessful, performing file synchronization in the next period.
Optionally, the file synchronization comprises the steps of:
s1451, generating a primary exclusion list;
s1452, synchronizing by adopting a file synchronization tool;
s1453, if the synchronization is successful, generating a secondary exclusion list;
s1454, determining whether the primary exclusion list is the same as the secondary exclusion list;
s1455, if the primary exclusion list is different from the secondary exclusion list, deleting the difference file of the cloud disk.
As shown in fig. 4, first, a primary exclusion list is generated, and a synchronization tool is used for synchronization, for example, rsync is a data mirror backup tool in the linux system; if the synchronization is unsuccessful, performing secondary trial synchronization, and if the synchronization is successful, generating a secondary exclusion list; comparing whether the primary exclusion list is the same as the secondary exclusion list, and if so, continuing the subsequent processing flow; if not, generating a difference list according to the primary exclusion list and the secondary exclusion list, deleting the difference list files on the cloud disk, and continuing the subsequent processing flow.
As shown in fig. 5, an embodiment of the present invention provides a Linux virtual machine cloud packing partition chain breakage protection system, including:
the system comprises a cloning module, a storage module and a control module, wherein the cloning module is used for creating a memory disc and cloning a cloud packing partition to the memory disc after acquiring a chain breakage protection starting instruction;
a switching module, configured to switch a root partition to the memory disk;
the operation module is used for modifying the name of the cloud disk root partition and operating the system in the memory disk if the switching is successful;
and the synchronization module is used for synchronizing the memory disc file to the cloud disc according to a preset time interval.
It can be seen that the contents in the foregoing method embodiments are all applicable to the present system embodiment, the functions specifically implemented by the present system embodiment are the same as those in the foregoing method embodiment, and the beneficial effects achieved by the present system embodiment are also the same as those achieved by the foregoing method embodiment.
As shown in fig. 6, an embodiment of the present invention provides a Linux virtual machine cloud packing partition chain breakage protection system, including:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the Linux vdisk partition delinking protection method as recited in claim above.
It can be seen that the contents in the foregoing method embodiments are all applicable to this system embodiment, the functions specifically implemented by this system embodiment are the same as those in the foregoing method embodiment, and the advantageous effects achieved by this system embodiment are also the same as those achieved by the foregoing method embodiment.
In addition, the embodiment of the application also discloses a computer program product or a computer program, and the computer program product or the computer program is stored in a computer readable storage medium. The processor of the computer device may read the computer program from the computer-readable storage medium, and execute the computer program, so that the computer device executes the above method for protecting the partition broken link of the cloud packing of the Linux vm. Similarly, the contents in the foregoing method embodiments are all applicable to this storage medium embodiment, the functions implemented by this storage medium embodiment are the same as those in the foregoing method embodiments, and the beneficial effects achieved by this storage medium embodiment are also the same as those achieved by the foregoing method embodiments.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A Linux virtual machine cloud packing partition chain-breaking protection method is characterized by comprising the following steps:
after a chain breakage protection starting instruction is obtained, a memory disc is created, and a cloud packing partition is cloned to the memory disc;
switching a root partition to the memory disk;
if the switching is successful, modifying the name of the cloud disk root partition and operating a system on the memory disk;
synchronizing the memory disc file to the cloud disc according to a preset time interval;
wherein, the synchronizing the memory disk file to the cloud disk comprises the steps of:
acquiring the names of the logical volume, the volume group and the cloud disk;
detecting whether the cloud disk is valid;
if the cloud disk magnetic disk is valid, determining whether the cloud disk is mounted;
if the cloud disk is mounted, unloading the cloud disk and acquiring the cloud disk identification information;
repairing the cloud disk file system and setting the cloud disk identification information to complete file synchronization;
wherein the file synchronization comprises the steps of:
generating a first exclusion list;
a file synchronization tool is adopted for synchronization;
if the synchronization is successful, generating a secondary exclusion list;
determining whether the primary exclusion list is the same as the secondary exclusion list;
and if the primary exclusion list is different from the secondary exclusion list, deleting the difference file of the cloud disk.
2. The Linux vdisk partition chaining-break protection method of claim 1, wherein the creating of a memory disk and the cloning of a cloud packing partition to the memory disk are implemented by a logical volume management mirroring technique.
3. The Linux vdisk partition chaining protection method of claim 2, wherein creating a memory disk and cloning a cloud packing partition to the memory disk is implemented by a logical volume management mirror technology, comprising the steps of:
acquiring cloud packing partition information; the cloud packing partition information comprises logical volume information;
determining whether a memory disk can be successfully created or not according to the cloud disk partition information and a system memory;
if the memory disk is successfully created, creating a logical volume management mirror image of the memory disk and the cloud disk root partition;
and setting a read-write speed, and cloning the cloud packing to a memory disc in a partitioned manner.
4. The Linux virtual machine cloud packing partition broken link protection method of claim 3, wherein the determining whether the memory disk can be successfully created according to the cloud packing partition information and the system memory comprises:
sequentially determining whether the cloud disk root partition is a logical volume, whether a system memory is larger than a memory required by the cloud disk root partition and whether the space of a logical volume group of the cloud disk root partition meets the space required by a logical volume management mirror image according to the cloud disk root partition information and the system memory;
if the cloud disk root partition is a logical volume, the system memory is larger than the memory required by the cloud disk root partition, and the space of the cloud disk root partition logical volume group meets the space required by a logical volume management mirror image, determining that a memory disk can be successfully created;
otherwise, determining to finish creating the memory disk.
5. The Linux virtual machine cloud packing partition chain breakage protection method of claim 1, further comprising: if the file synchronization fails, the file synchronization is executed again.
6. A Linux virtual machine cloud packing partition chain breakage protection system is characterized by comprising:
the system comprises a cloning module, a starting module and a judging module, wherein the cloning module is used for creating a memory disc and cloning a cloud packing partition to the memory disc after acquiring a chain breaking protection starting instruction;
a switching module, configured to switch a root partition to the memory disk;
the operation module is used for modifying the name of the cloud disk root partition and operating the system in the memory disk if the switching is successful;
the memory disk file synchronization module is used for synchronizing the memory disk file to the cloud disk according to a preset time interval;
wherein, the synchronizing the memory disk file to the cloud disk comprises the steps of:
acquiring the names of a logical volume, a volume group and a cloud disk;
detecting whether the cloud disk is valid;
if the cloud disk magnetic disk is valid, determining whether the cloud disk is mounted;
if the cloud disk is mounted, unloading the cloud disk and acquiring the cloud disk identification information;
repairing the cloud disk file system and setting the cloud disk identification information to complete file synchronization;
wherein the file synchronization comprises the steps of:
generating a primary exclusion list;
synchronizing by adopting a file synchronization tool;
if the synchronization is successful, generating a secondary exclusion list;
determining whether the primary exclusion list is the same as the secondary exclusion list;
and if the primary exclusion list is different from the secondary exclusion list, deleting the difference file of the cloud disk.
7. A Linux virtual machine cloud packing partition chain breakage protection system is characterized by comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, the at least one program causes the at least one processor to implement the Linux vdisk partition delinking protection method of any of claims 1-5.
8. A storage medium having stored therein a processor-executable program, wherein the processor-executable program, when executed by a processor, is configured to perform the Linux vdisk partition delinking protection method of any of claims 1-5.
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