CN107526840A - File system snapshot querying method, device and computer-readable recording medium - Google Patents
File system snapshot querying method, device and computer-readable recording medium Download PDFInfo
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- CN107526840A CN107526840A CN201710828223.0A CN201710828223A CN107526840A CN 107526840 A CN107526840 A CN 107526840A CN 201710828223 A CN201710828223 A CN 201710828223A CN 107526840 A CN107526840 A CN 107526840A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/14—Details of searching files based on file metadata
- G06F16/148—File search processing
Abstract
The invention discloses a kind of file system snapshot querying method, including：Obtain the SnapRealm structures of file system to be checked；By SnapRea lm structures, the SnapRealm structures at different levels of snapshot tree construction in file system to be checked are searched, obtain all SNAPSHOT INFOs of file system to be checked；Wherein, the SnapRealm structures at different levels of snapshot tree construction preserve the SNAPSHOT INFO and snapshot tree construction relationship between superior and subordinate of corresponding catalogue.The SnapRealm structures at different levels for the snapshot tree construction that this method passes through file system inquire about SNAPSHOT INFO, and compared to prior art, it can rapidly inquire all SNAPSHOT INFOs of file system, improve snapshot efficiency.In addition, the invention also discloses a kind of file system snapshot inquiry unit and computer-readable recording medium, equally with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to snapping technique field, more particularly to a kind of file system snapshot querying method, device and computer
Readable storage medium storing program for executing.
Background technology
With the raising of storage application demand, user typically carries out data protection by online mode, is lost to prevent norm evidence
Lose.Wherein, snapshot is then that Online storage device takes precautions against loss of data effective means.
Wherein, File Snapshot function is mainly applied in file system, by the snapshot operation to catalogue, so as to foundation
Generate snapshot and carry out the realizations such as rollback recovery data or other purposes.That is, File Snapshot can support snapshot, look into
See, delete and rolling back action.Usually, set snapshot multiple snapshot can be set to a catalogue, carried out according to Snapshot time point
Data recovery.That is, file system can set snapshot to any catalogue, and snapshot can be set at any time.And based on pair
When one catalogue sets snapshot, it is impossible to which existing snapshot of the same name under the catalogue is set；It is fast which has when deleting snapshot, under the catalogue
According to the factors such as deletion are available for, carrying out needing to inquire all snapshots under this document system during snapshot operation in time.
At present, the Snapshot query of file system generally by one by one inquire about file system in all catalogues,
Get all snapshots of this document system.So, Snapshot query efficiency will necessarily be caused low.
The content of the invention
It is an object of the invention to provide a kind of file system snapshot querying method, device and computer-readable recording medium,
To solve the problems, such as that the Snapshot query efficiency of existing file system is low.
In order to solve the above technical problems, the present invention provides following technical scheme：
A kind of file system snapshot querying method, including：
Obtain the SnapRealm structures of file system to be checked；
By the SnapRealm structures, snapshot tree construction is at different levels in the lookup file system to be checked
SnapRealm structures, obtain all SNAPSHOT INFOs of the file system to be checked；
Wherein, the SnapRealm structures at different levels of the snapshot tree construction preserve corresponding catalogue SNAPSHOT INFO and
Snapshot tree construction relationship between superior and subordinate.
Alternatively, the SnapRealm structures for obtaining file system to be checked, including：
Obtain the root SnapRealm structures of the file system to be checked.
Alternatively, it is described by the SnapRealm structures, it is corresponding to search each catalogue in the file system to be checked
SnapRealm structures, obtain all SNAPSHOT INFOs of the file system to be checked, including：
The SNAPSHOT INFO of root is read from the root SnapRealm structures, and by the snapshot of the root
Information is stored to the first chained list；
According to the snapshot tree construction relationship between superior and subordinate of the root SnapRealm structures, the snapshot tree knot is obtained
The next stage SnapRealm structures of structure, and store to the second chained list；
Each the described next stage SnapRealm structure inquired about successively in second chained list, obtain described next
The SNAPSHOT INFO of level SnapRealm structures, and store to first chained list, next SnapRealm structures are deleted,
Judge whether the next stage SnapRealm structures are afterbody SnapRealm structures；
If it is not, then obtain the next stage SnapRrealm structures of the next stage SnapRealm structures, and store to
Second chained list；
Each SnapRealm structures that repetition is inquired about in second chained list successively, until obtaining the text to be checked
Untill all SNAPSHOT INFOs of part system.
Alternatively, after all SNAPSHOT INFOs for obtaining the file system to be checked, in addition to：
According to all SNAPSHOT INFOs of the file system to be checked, snapshot operation is performed；
Wherein, the snapshot operation includes at least one of snapshot setting, snapshot deletion and snapshot rollback.
Alternatively, after all SNAPSHOT INFOs for obtaining the file system to be checked, in addition to：
All SNAPSHOT INFOs of the file system to be checked of first storage of linked list are parsed, classification is shown in client
End.
A kind of file system quick search device, including：
Acquisition module, for obtaining the SnapRealm structures of file system to be checked；
Enquiry module, for by the SnapRealm structures, searching snapshot tree knot in the file system to be checked
The SnapRealm structures at different levels of structure, obtain all SNAPSHOT INFOs of the file system to be checked；
Wherein, the SnapRealm structures at different levels of the snapshot tree construction preserve corresponding catalogue SNAPSHOT INFO and
Snapshot tree construction relationship between superior and subordinate.
Alternatively, the acquisition module includes：
Catalogue structure body acquisition submodule, the root SnapRealm for obtaining the file system to be checked are tied
Structure body.
Alternatively, the enquiry module includes：
First reading submodule, for reading the SNAPSHOT INFO of root from the root SnapRealm structures, and
The SNAPSHOT INFO of the root is stored to the first chained list；
First acquisition submodule, for being closed according to snapshot tree construction the superior and the subordinate of the root SnapRealm structures
System, obtains the next stage SnapRealm structures of the snapshot tree construction, and store to the second chained list；
Submodule is inquired about, for inquiring about each described next stage SnapRealm structure in second chained list successively
Body, obtains the SNAPSHOT INFO of the next stage SnapRealm structures, and stores to first chained list, deletes described next
SnapRealm structures, judge whether the next stage SnapRealm structures are afterbody SnapRealm structures；
Second acquisition submodule, for if it is not, then obtaining the next stage of the next stage SnapRealm structures
SnapRrealm structures, and store to second chained list；Repetition is inquired about each in second chained list successively
SnapRealm structures, untill all SNAPSHOT INFOs of the file system to be checked are obtained.
Alternatively, in addition to：
Execution module, for all SNAPSHOT INFOs according to the file system to be checked, perform snapshot operation；
Wherein, the snapshot operation includes at least one of snapshot setting, snapshot deletion and snapshot rollback.
A kind of computer-readable recording medium, file system snapshot inquiry is stored with the computer-readable recording medium
Program, the file system snapshot polling routine realize that file system snapshot described in any of the above-described is inquired about when being executed by processor
The step of method.
File system snapshot querying method provided by the present invention, including：Obtain the SnapRealm of file system to be checked
Structure；By SnapRealm structures, the SnapRealm structures at different levels of snapshot tree construction in file system to be checked are searched
Body, obtain all SNAPSHOT INFOs of file system to be checked；Wherein, the SnapRealm structures at different levels of snapshot tree construction are protected
There are the SNAPSHOT INFO and snapshot tree construction relationship between superior and subordinate of corresponding catalogue.This method is obtained by inquiring about SnapRealm structures
Its SNAPSHOT INFO stored is got, and by snapshot tree construction relationship between superior and subordinate in SnapRealm structures, is got at different levels
The SnapRealm structures of catalogue, so as to get all SNAPSHOT INFOs in file system.That is, pass through file system
The SnapRealm structures at different levels of snapshot tree construction inquire about SNAPSHOT INFO, and compared to prior art, it can rapidly be inquired about
To all SNAPSHOT INFOs of file system, snapshot efficiency is improved.File system snapshot inquiry unit provided by the present invention and
Computer-readable recording medium equally has above-mentioned beneficial effect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is that a kind of flow of embodiment of file system snapshot querying method provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of snapshot tree structural representation of file system provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet provided in an embodiment of the present invention by snapshot tree structure query SNAPSHOT INFO；
Fig. 4 is the structural schematic block diagram of file system quick search device provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is a kind of specific embodiment party of file system snapshot querying method provided in an embodiment of the present invention
The schematic flow sheet of formula, this method may comprise steps of：
Step 101：Obtain the SnapRealm structures of file system to be checked.
It is to be appreciated that above-mentioned SnapRealm structures can be multiple or one.It is either multiple, or one
It is individual, file system to be checked can be got according to the snapshot tree construction relationship between superior and subordinate that SnapRealm structures are included
Middle snapshot tree construction all SnapRealm structures at different levels, to get all snapshots of file system to be checked.
What SnapRealm data structures only created when its corresponding catalogue creates snapshot first, never created snapshot
Catalogue in the absence of SnapRealm structures.Usually, the root acquiescence in file system has created SnapRealm knots
Structure, therefore all SnapRealm of file system to be checked can be preferably obtained by the SnapRealm structures of root
Structure.That is, in some embodiments, this step can be, for example,：Obtain the root of file system to be checked
SnapRealm structures.The existing SNAPSHOT INFO and snapshot tree of root are included in the SnapRealm structures of the root
Structure relationship between superior and subordinate.
Step 102：By SnapRealm structures, the at different levels of snapshot tree construction in file system to be checked are searched
SnapRealm structures, obtain all SNAPSHOT INFOs of file system to be checked；
Wherein, the SnapRealm structures at different levels of snapshot tree construction preserve the SNAPSHOT INFO and snapshot of corresponding catalogue
Tree construction relationship between superior and subordinate.
For the snapshot data structure in preferably present document system, below in conjunction with one of the file system shown in Fig. 2
Kind snapshot tree structural representation.
Such as Fig. 2, root is file system root directory, and dir1_1, dir1_2, dir3_2 etc. is the mesh in file system
Record.If directory creating crosses snapshot, respective directories have a respective SnapRealm structures, and dir1_1 and dir2_3 due to
Snapshot was not created, then does not have SnapRealm structures.The directory tree of file system is by root, dir1_1, dir1_2, dir2_
1st, dir2_2, dir2_3, dir3_1, dir3_2 are formed, and the snapshot tree of file system is then the SnapRealm structures for having each catalogue
Into.
When acquired SnapRealm structures are structure corresponding to root, pass through the snapshot tree knot of its preservation
The relationship between superior and subordinate of structure, the SnapRealm structures at different levels of snapshot tree are obtained successively.Therefore in some embodiments, referring to
The schematic flow sheet provided in an embodiment of the present invention by snapshot tree structure query SNAPSHOT INFO shown in Fig. 3, this step can be with
Specially following steps：
Step A1：The SNAPSHOT INFO of root is read from root SnapRealm structures, and the snapshot of root is believed
Breath is stored to the first chained list；
Step A2：According to the snapshot tree construction relationship between superior and subordinate of root SnapRealm structures, snapshot tree construction is obtained
Next stage SnapRealm structures, and store to the second chained list；
It is to be appreciated that next stage SnapRealm structures can be multiple, that is, pass through the SnapRealm structures of root
Body obtains the multiple SnapRealm structures at the same level of next stage.It is after obtaining multiple SnapRealm structures at the same level, this is more
Individual SnapRealm structures at the same level are stored in the second chained list in the lump.Certainly, if the next stage of root only has one
During SnapRealm structures, accessed can also be one.
Step A3：Each next stage SnapRealm structures inquired about successively in the second chained list, obtain next stage
The SNAPSHOT INFO of SnapRealm structures, and store to the first chained list, next SnapRealm structures are deleted, judge next stage
Whether SnapRealm structures are afterbody SnapRealm structures；If it is not, then obtain next stage SnapRealm structures
Next stage SnapRrealm structures, and store to the second chained list；
After getting multiple SnapRealm structures at the same level, each SnapRealm structure is inquired about successively.I.e. one
Multiple SnapRealm structures at the same level are inquired about on an individual ground, are inquired about first SnapRealm structure first, are somebody's turn to do
SNAPSHOT INFO and snapshot tree construction relationship between superior and subordinate in SnapRealm structures, by the snapshot tree construction relationship between superior and subordinate,
Judge whether current SnapRealm structures are the afterbody of the branch, if it is, the SNAPSHOT INFO obtained is stored to
In one chained list, and from the second chained list delete current queries SnapRealm structures, then inquire about next peer
SnapRealm structures, if it is not, then obtaining again the SnapRealm structures of next stage, and it is stored in the second chained list.
For example, based on the snapshot tree construction in Fig. 2, if the SnapRealm structures at the same level stored in current second chained list
Body is dir2_1, dir2_2 SnapRealm structures.The two SnapRealm structures are inquired about successively, are inquired about first
Dir2_1 SnapRealm structures, corresponding SNAPSHOT INFO and snapshot tree construction relationship between superior and subordinate is obtained, according to the snapshot tree
Structure relationship between superior and subordinate, judge each next stage SnapRealm structures, then delete dir2_1 SnapRealm structures,
The SNAPSHOT INFO obtained is stored to the first chained list；Then dir2_2 SnapRealm structures are inquired about, are obtained corresponding fast
According to information and snapshot tree construction relationship between superior and subordinate, SNAPSHOT INFO is stored to the first chained list, and according to the snapshot tree construction above and below
Level relation, judgement also there are SnapRealm structures corresponding to next stage structure dir3_1, by corresponding to dir3_1
SnapRealm structures are stored in the second chained list, and delete SnapRealm structures corresponding to dir2_2.Peer is inquired about
SnapRealm structures after, then according to similar procedure inquiry next stage SnapRealm structures again, until getting all
Snapshot, that is, all SnapRealm structures inquired about in snapshot tree structure.
Step A4：Each SnapRealm structures that repetition is inquired about in the second chained list successively, until obtaining file to be checked
Untill all SNAPSHOT INFOs of system.
According to the similar procedure of above-mentioned inquiry, repetition is inquired about each SnapRealm structures at different levels, until obtaining
To all snapshots, that is, all SnapRealm structures inquired about in snapshot tree structure.So, it is all in file system
SNAPSHOT INFO is just stored entirely in chained list 1.
After all SNAPSHOT INFOs by snapshot tree structure query file system, it can be based on according to SNAPSHOT INFO, instruct
Snapshot operation, can also classify all SNAPSHOT INFOs of displaying.
Therefore in some embodiments, can be with after all SNAPSHOT INFOs of file system to be checked are obtained
Including：According to all SNAPSHOT INFOs of file system to be checked, snapshot operation is performed；Wherein, snapshot operation include snapshot set,
At least one of snapshot deletion and snapshot rollback.
Specifically, when setting snapshot, according to the system snapshot information inquired, the snapshot title to be set, root are selected
Whether according to, snapshot and its Snapshot time point decide whether to set snapshot；When deleting snapshot, it is according to what is inquired
System SNAPSHOT INFO, it can selectively delete some snapshot at some time point therein；When snapshot rollback, according to what is inquired
System snapshot information, it can selectively determine time point during rollback.
, can be with after all SNAPSHOT INFOs of file system to be checked are obtained in other embodiments
Including：All SNAPSHOT INFOs of the file system to be checked of the first storage of linked list are parsed, classification is shown in client.
It is to be appreciated that classification shows SNAPSHOT INFO and instructs snapshot operation between the two without clear and definite according to SNAPSHOT INFO
Priority execution sequence.
In the present embodiment, believed by the SnapRealm structures at different levels of the snapshot tree construction of file system to inquire about snapshot
Breath, compared to prior art, it can rapidly inquire all SNAPSHOT INFOs of file system, improve snapshot efficiency.
File system quick search device provided in an embodiment of the present invention is introduced below, file system described below
Uniting quick search device can be mutually to should refer to above-described file system method for quickly querying.
Fig. 4 is refer to, Fig. 4 is the structural schematic block diagram of file system quick search device provided in an embodiment of the present invention,
The device can include：
Acquisition module 41, for obtaining the SnapRealm structures of file system to be checked；
Enquiry module 42, for by SnapRealm structures, searching each of snapshot tree construction in file system to be checked
Level SnapRealm structures, obtain all SNAPSHOT INFOs of file system to be checked；
Wherein, the SnapRealm structures at different levels of snapshot tree construction preserve the SNAPSHOT INFO and snapshot of corresponding catalogue
Tree construction relationship between superior and subordinate.
In some embodiments, acquisition module can include：
Catalogue structure body acquisition submodule, for obtaining the root SnapRealm structures of file system to be checked.
In some embodiments, enquiry module can include：
First reading submodule, for reading the SNAPSHOT INFO of root from root SnapRealm structures, and by root
The SNAPSHOT INFO of catalogue is stored to the first chained list；
First acquisition submodule, for the snapshot tree construction relationship between superior and subordinate according to root SnapRealm structures, obtain
The next stage SnapRealm structures of snapshot tree construction are taken, and are stored to the second chained list；
Submodule is inquired about, for inquiring about each next stage SnapRealm structures in the second chained list successively, under acquisition
The SNAPSHOT INFO of one-level SnapRealm structures, and store to the first chained list, next SnapRealm structures are deleted, under judgement
Whether one-level SnapRealm structures are afterbody SnapRealm structures；
Second acquisition submodule, for if it is not, then obtaining the next stage SnapRrealm of next stage SnapRealm structures
Structure, and store to the second chained list；Each SnapRealm structures that repetition is inquired about in the second chained list successively, until obtaining
Untill all SNAPSHOT INFOs of file system to be checked.
In some embodiments, can also include：
Execution module, for all SNAPSHOT INFOs according to file system to be checked, perform snapshot operation；
Wherein, snapshot operation includes at least one of snapshot setting, snapshot deletion and snapshot rollback.
In the present embodiment, believed by the SnapRealm structures at different levels of the snapshot tree construction of file system to inquire about snapshot
Breath, compared to prior art, it can rapidly inquire all SNAPSHOT INFOs of file system, improve snapshot efficiency.
The embodiment of the present invention provides a kind of computer-readable recording medium, and text is stored with the computer-readable recording medium
Part system snapshot polling routine, file system snapshot polling routine realize that any of the above-described file system is fast when being executed by processor
The step of according to querying method.Other similar portions can be found in corresponding contents above, will not be repeated here.
Each embodiment is described by the way of progressive in specification, and what each embodiment stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
Speech, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
File system snapshot querying method provided by the present invention, device and computer-readable recording medium are carried out above
It is discussed in detail.Specific case used herein is set forth to the principle and embodiment of the present invention, above example
Explanation be only intended to help understand the present invention method and its core concept.It should be pointed out that for the common of the art
For technical staff, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these
Improve and modification is also fallen into the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. file system snapshot querying method, it is characterised in that including：Obtain the SnapRealm structures of file system to be checked；By the SnapRealm structures, the SnapRealm at different levels of snapshot tree construction in the file system to be checked are searched Structure, obtain all SNAPSHOT INFOs of the file system to be checked；Wherein, the SnapRealm structures at different levels of the snapshot tree construction preserve the SNAPSHOT INFO and snapshot of corresponding catalogue Tree construction relationship between superior and subordinate.
- 2. the method as described in claim 1, it is characterised in that the SnapRealm structures for obtaining file system to be checked Body, including：Obtain the root SnapRealm structures of the file system to be checked.
- 3. method as claimed in claim 2, it is characterised in that it is described by the SnapRealm structures, treated described in lookup SnapRealm structures corresponding to each catalogue in file system are inquired about, obtain all snapshots letter of the file system to be checked Breath, including：The SNAPSHOT INFO of root is read from the root SnapRealm structures, and by the SNAPSHOT INFO of the root Store to the first chained list；According to the snapshot tree construction relationship between superior and subordinate of the root SnapRealm structures, the snapshot tree construction is obtained Next stage SnapRealm structures, and store to the second chained list；Each the described next stage SnapRealm structure inquired about successively in second chained list, obtains the next stage The SNAPSHOT INFO of SnapRealm structures, and store to first chained list, next SnapRealm structures are deleted, are sentenced Whether the next stage SnapRealm structures that break are afterbody SnapRealm structures；If it is not, then obtaining the next stage SnapRrealm structures of the next stage SnapRealm structures, and store to described Second chained list；Each SnapRealm structures that repetition is inquired about in second chained list successively, until obtaining the file system to be checked Untill all SNAPSHOT INFOs of system.
- 4. the method as described in any one of claims 1 to 3, it is characterised in that obtain the file system to be checked described All SNAPSHOT INFOs after, in addition to：According to all SNAPSHOT INFOs of the file system to be checked, snapshot operation is performed；Wherein, the snapshot operation includes at least one of snapshot setting, snapshot deletion and snapshot rollback.
- 5. method as claimed in claim 4, it is characterised in that in all snapshots for obtaining the file system to be checked After information, in addition to：All SNAPSHOT INFOs of the file system to be checked of first storage of linked list are parsed, classification is shown in client.
- A kind of 6. file system quick search device, it is characterised in that including：Acquisition module, for obtaining the SnapRealm structures of file system to be checked；Enquiry module, for by the SnapRealm structures, searching snapshot tree construction in the file system to be checked SnapRealm structures at different levels, obtain all SNAPSHOT INFOs of the file system to be checked；Wherein, the SnapRealm structures at different levels of the snapshot tree construction preserve the SNAPSHOT INFO and snapshot of corresponding catalogue Tree construction relationship between superior and subordinate.
- 7. device as claimed in claim 6, it is characterised in that the acquisition module includes：Catalogue structure body acquisition submodule, for obtaining the root SnapRealm structures of the file system to be checked.
- 8. device as claimed in claim 7, it is characterised in that the enquiry module includes：First reading submodule, for reading the SNAPSHOT INFO of root from the root SnapRealm structures, and by institute The SNAPSHOT INFO for stating root is stored to the first chained list；First acquisition submodule, for the snapshot tree construction relationship between superior and subordinate according to the root SnapRealm structures, obtain The next stage SnapRealm structures of the snapshot tree construction are taken, and are stored to the second chained list；Submodule is inquired about, for inquiring about each described next stage SnapRealm structure in second chained list successively, is obtained The SNAPSHOT INFO of the next stage SnapRealm structures is taken, and is stored to first chained list, is deleted described next SnapRealm structures, judge whether the next stage SnapRealm structures are afterbody SnapRealm structures；Second acquisition submodule, for if it is not, then obtaining the next stage SnapRrealm of the next stage SnapRealm structures Structure, and store to second chained list；Each SnapRealm structures that repetition is inquired about in second chained list successively, Untill all SNAPSHOT INFOs of the file system to be checked are obtained.
- 9. the device as described in any one of claim 6 to 8, it is characterised in that also include：Execution module, for all SNAPSHOT INFOs according to the file system to be checked, perform snapshot operation；Wherein, the snapshot operation includes at least one of snapshot setting, snapshot deletion and snapshot rollback.
- 10. a kind of computer-readable recording medium, it is characterised in that file system is stored with the computer-readable recording medium System Snapshot query program, is realized such as any one of claim 1 to 5 when the file system snapshot polling routine is executed by processor The step of file system snapshot querying method.
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| CN114168533A (en) * | 2022-02-09 | 2022-03-11 | 苏州浪潮智能科技有限公司 | Snapshot query method and device, computer equipment and storage medium |
| CN117130980A (en) * | 2023-10-24 | 2023-11-28 | 杭州优云科技有限公司 | Virtual machine snapshot management method and device |
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