CN105389185A - Method and apparatus for processing boot storm of virtual cloud desktops - Google Patents
Method and apparatus for processing boot storm of virtual cloud desktops Download PDFInfo
- Publication number
- CN105389185A CN105389185A CN201510784531.9A CN201510784531A CN105389185A CN 105389185 A CN105389185 A CN 105389185A CN 201510784531 A CN201510784531 A CN 201510784531A CN 105389185 A CN105389185 A CN 105389185A
- Authority
- CN
- China
- Prior art keywords
- virtual machine
- file
- xcopy
- virtual
- qcow2
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The present invention relates to a method and an apparatus for processing a boot storm of virtual cloud desktops. The method comprises: creating a virtual computer with applications which all users need to use; maintaining a current running state of the virtual computer, and using an image file used by the virtual computer as a template; cloning a plurality of copy files by using the image file used by the virtual computer so as to obtain backup files of the virtual cloud desktops, which respectively correspond to the plurality of copy files; and starting the virtual computer and a plurality of virtual cloud desktops and providing the virtual computer and the plurality of virtual cloud desktops to users. The method and the apparatus can be used for the boot storm condition and the boot speed is high, so that the problem of long consumed time, which is generated when a server of an SAS hard disk is used for copying a plurality of pieces of data under the condition of facing the boot storm, can be solved.
Description
Technical field
The present invention relates to cloud desktop starting method, particularly relate to a kind of disposal route and the device that start storm for virtual cloud desktop.
Background technology
In prior art, the scene that applying virtual cloud desktop is maximum mainly contains two: enterprises and institutions' office and classroom's teaching.All exist under above-mentioned two kinds of scenes and start storm problem, namely mass simultaneous starts virtual desktop at short notice, such as, before and after enterprises and institutions' work hours 10 minutes, classroom before class after the situation of 2-5 minute; Because now operating system and application needs to read a large amount of data to load and to perform from disk, cause os starting slow, thus affect user's experience.
In practical application, when the operating system of virtual cloud desktop is Windows7, when virtual cloud desktop starts, the number of times (Input/OutputOperationsPerSecond, IOPS) carrying out reading and writing I/O operation per second is about 50 ~ 100; Once operate steadily, average IOPS drops to 5 ~ 10.Generally speaking, the maximum manageable IOPS of SAS disk of 15000 turns per minute is 180, and solid state hard disc (SolidStateDrives, SSD) is although can process about 5000 IOPS, because SSD hard disk is somewhat expensive, cause the server of configuration SSD hard disk also very little.
Regardless of the application scenarios of which kind of virtual cloud desktop, user often requires to produce multiple similar virtual machine from a template.For solving the problem, adopting following methods to carry out the startup of virtual cloud desktop in prior art: the image copying many parts that template virtual machine is used, then utilizing these mirror images copied to create virtual machine.But copy the very consuming time of many numbers certificate, and along with the increase of image file size, the increase that the time span of needs also can be linear.The read or write speed of general SAS hard disk (SerialAttachedSCSI, Serial Attached SCSI (SAS)) can reach 100MB/ second, one is had to the cloud desktop virtual machine of 50G size hard drive space, and cloning 50 times needed is 7 hours.
Summary of the invention
One of them object of the present invention is to provide a kind of disposal route and the device that start storm for virtual cloud desktop, with solve in prior art use SAS hard disk server in the face of starting storm time batch start virtual cloud desktop longer technical matters consuming time.
For achieving the above object, first aspect, embodiments provides a kind of disposal route starting storm for virtual cloud desktop, comprising:
Create the virtual machine that is provided with the application that all users must use;
Keep the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
The image file clone book copying file utilizing this virtual machine to use, using as the backup file with this book copying file virtual cloud desktop one to one;
Virtual machine and the start of multiple stage virtual cloud desktop are supplied to user.
Alternatively, in the step of the described image file clone book copying file utilizing this virtual machine to use, comprising:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
Alternatively, described employing qcow2 form also comprises after image file base_volume being cloned the step of the xcopy of many parts of qcow2 forms:
The backup file backingfile of this book copying file is pointed to base_volume.
Will be understood that, above " sensing ", refer to when user accesses backup file backingfile, first can find the logical address corresponding to base_volume from backup file backingfile, then search data in base_volume according to this logical address.That is, user accesses data in backup file backingfile in fact from base_volume.
Alternatively, described by virtual machine and multiple stage virtual cloud desktop start be supplied to the step of user after, also comprise:
When user needs write data, by the block copy in backup file backingfile in the xcopy of qcow2 form;
Then in the xcopy of the data these needs write stored in corresponding qcow2 form.
Alternatively, described by virtual machine and multiple stage virtual cloud desktop start be supplied to the step of user after, also comprise:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, search from the backup file backingfile of this xcopy.
Second aspect, embodiments provides a kind for the treatment of apparatus starting storm for virtual cloud desktop, comprising:
Virtual machine creating module, for creating the virtual machine that is provided with the application that all users must use;
Template-setup module, for keeping the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
File cloning module, the image file used for utilizing this virtual machine clone book copying file, using as the backup file with this book copying file virtual cloud desktop one to one.
Alternatively, this treating apparatus also comprises:
Starting module, for being supplied to user by virtual machine and the start of multiple stage virtual cloud desktop.
Alternatively, described file cloning module is for performing following steps:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
Alternatively, this treating apparatus also comprises Data write. module, for performing following steps:
When user needs write data, by the block copy in backup file backingfile in the xcopy of qcow2 form;
Then in the xcopy of the data these needs write stored in corresponding qcow2 form.
Alternatively, this treating apparatus also comprises:
Data read module, for performing following steps:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, then search from the backup file backingfile of this xcopy.
The present invention may be used for the situation starting storm, and toggle speed is fast, thus the server that can solve use SAS hard disk copies many numbers according to caused consuming time longer problem when startup storm.
Accompanying drawing explanation
Can understanding the features and advantages of the present invention clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the present invention, in the accompanying drawings:
Fig. 1 is a kind of process flow schematic diagram starting storm for virtual cloud desktop that the embodiment of the present invention provides;
Fig. 2 is a kind for the treatment of apparatus block diagram starting storm for virtual cloud desktop that the embodiment of the present invention provides.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
First aspect, embodiments provides a kind of disposal route starting storm for virtual cloud desktop, as shown in Figure 1, comprising:
Create the virtual machine that is provided with the application that all users must use;
Keep the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
The image file clone book copying file utilizing this virtual machine to use, using as the backup file with this book copying file virtual cloud desktop one to one;
Virtual machine and the start of multiple stage virtual cloud desktop are supplied to user.
The present invention is by overcoming template, and pilot process does not have data Replica, and may be used for the situation starting storm, toggle speed is fast, thus the server that can solve use SAS hard disk copies many numbers according to caused consuming time longer problem when startup storm.
Will be understood that, due in the present invention using this image file as template, therefore above " keep the current operating conditions of this virtual machine ", refer to and keep data in the image file of this virtual machine to remain unchanged.Identical content in multiple virtual cloud desktop can be made like this to clone from template, and different content is being put in corresponding virtual cloud desktop respectively.
In practical application, in the present invention, the image file of virtual machine and xcopy adopt qcow2 form.Qcow2 mirror-image format is one of disk image format of qemu support.The qcow2 form form of expression is the block device of simulating a fixed size in one file.When creating qcow2 file, its backup file backingfile can be specified.
Alternatively, in the step of the image file clone book copying file utilizing this virtual machine to use, comprising:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
Alternatively, employing qcow2 form also comprises after image file base_volume being cloned the step of the xcopy of many parts of qcow2 forms:
The backup file backingfile of this book copying file is pointed to base_volume.
That is, the backup file backingfile of book copying file points to image file base_volume, therefore when batch starts virtual cloud desktop, only need for the virtual machine as template extracts data, other xcopies without the need to copying data, thus reduce the start-up time of virtual cloud desktop.
When starting most, the read operation of any xcopy to this qcow2 form all directly can point to its backup file backingfile.When carrying out write operation to this qcow2 mirror image, first can find the data block that this logical address is corresponding from backingfile, then copying corresponding data block in the xcopy of this qcow2 form, and then write the data that user will write.During the read operation of next time again to this data block, just first read from the xcopy of this qcow2 form, only having when there is no data block in this xcopy, just going to find in backup file backingfile.
Alternatively, after virtual machine and the start of multiple stage virtual cloud desktop are supplied to the step of user, also comprise:
When user needs write data, by the block copy in backup file backingfile in the xcopy of qcow2 form;
Then in the xcopy of the data these needs write stored in corresponding qcow2 form.
Alternatively, after virtual machine and the start of multiple stage virtual cloud desktop are supplied to the step of user, also comprise:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, search from the backup file backingfile of this xcopy.
In practical application, the present invention realizes said method in Linux memory file system.Tmpfs is that virtual memory file system a: Tmpfs can use physical memory, also can use exchange partition.In linux kernel, virtual memory resource is made up of physical memory (RAM) and exchange partition, and these resources are responsible for distributing and management by the virtual memory subsystem in kernel.Tmpfs carrys out storage file to virtual memory subsystem requested page, and it is the same with the part of other requested page of Linux, and the page not knowing to distribute to oneself as in internal memory or in exchange partition.
Adopt above-mentioned disposal route, solve the disposal route that virtual cloud desktop starts storm, comprising:
The memory file system of a Mount tmpfs form, and the file setting up that is called a ram_base_volume thereon;
The content replication of base_volume above in ram_base_volume;
Delete original base_volume, the base_volume of newly-built multiple qcow2 form, and the backingfile corresponding to them is set to ram_base_volume.
To start 50 virtual cloud desktops, actual forming process is as follows:
Virtual cloud desktop 1---->base_volume---->ram_ba se_volume;
Virtual cloud desktop 2---->base_volume---->ram_ba se_volume;
……
Virtual cloud desktop 50---->base_volume---->ram_b ase_volume;
50 virtual cloud desktop starts, be supplied to user and use.
For the validity of the disposal route that the checking embodiment of the present invention provides, in one embodiment of the invention, adopt windows7 operating system, operate on the physical server on use E5-2620CPU*2 road, adopt the start-up time before and after said method, as shown in table 1:
Start-up time before and after the disposal route that table 1 adopts the embodiment of the present invention to provide
| Virtual cloud desktop number | 10 | 20 | 40 | 50 |
| Start duration before optimizing | 401 seconds | 1022 seconds | 3208 seconds | 5009 seconds |
| To start shooting after optimization duration | 41 seconds | 59 seconds | 152 seconds | 190 seconds |
| Ratio | 9.78 | 17.32 | 21.11 | 26.36 |
As can be seen from Table 1, along with the increase needing the virtual cloud desktop number started, the ratio before and after the disposal route adopting the embodiment of the present invention to provide is larger.That is, along with the increase needing the virtual cloud desktop number started, the advantage for the treatment of method is further obvious.Thus the present invention can solve and use the server of SAS hard disk when carrying out batch and starting virtual cloud desktop, cause os starting slow to load with execution owing to needing to read a large amount of data from hard disk, affect the problem of Consumer's Experience.
For embodying the superiority of the disposal route that the embodiment of the present invention provides, second aspect, the embodiment of the present invention additionally provides a kind for the treatment of apparatus starting storm for virtual cloud desktop, as shown in Figure 2, comprising:
Virtual machine creating module, for creating the virtual machine that is provided with the application that all users must use;
Template-setup module, for keeping the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
File cloning module, the image file used for utilizing this virtual machine clone book copying file, using as the backup file with this book copying file virtual cloud desktop one to one;
Starting module, for being supplied to user by virtual machine and the start of multiple stage virtual cloud desktop.
Alternatively, described file cloning module is for performing following steps:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
Alternatively, this treating apparatus also comprises Data write. module, during for needing as user to write data, by the xcopy of these data stored in corresponding qcow2 form.
Alternatively, this treating apparatus also comprises:
Data read module, for performing following steps:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, then search from the backup file backingfile of this xcopy.
The treating apparatus starting storm for virtual cloud desktop provided by the invention realizes based on disposal route mentioned above, and thus can solve same technical matters, and obtain identical technique effect, this is no longer going to repeat them.
In the present invention, term " multiple " refers to two or more, unless otherwise clear and definite restriction.
Although describe embodiments of the present invention by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such amendment and modification all fall into by within claims limited range.
Claims (9)
1. start a disposal route for storm for virtual cloud desktop, it is characterized in that, comprising:
Create the virtual machine that is provided with the application that all users must use;
Keep the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
The image file clone book copying file utilizing this virtual machine to use, using as the backup file with this book copying file virtual cloud desktop one to one;
Virtual machine and the start of multiple stage virtual cloud desktop are supplied to user.
2. disposal route according to claim 1, is characterized in that, in the step of the described image file clone book copying file utilizing this virtual machine to use, comprising:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
3. disposal route according to claim 2, is characterized in that, described employing qcow2 form also comprises after image file base_volume being cloned the step of the xcopy of many parts of qcow2 forms:
The backup file backingfile of this book copying file is pointed to base_volume.
4. disposal route according to claim 1, is characterized in that, described by virtual machine and multiple stage virtual cloud desktop start be supplied to the step of user after, also comprise:
When user needs write data, by the block copy in backup file backingfile in the xcopy of qcow2 form;
Then in the xcopy of the data these needs write stored in corresponding qcow2 form.
5. disposal route according to claim 1, is characterized in that, described by virtual machine and multiple stage virtual cloud desktop start be supplied to the step of user after, also comprise:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, search from the backup file backingfile of this xcopy.
6. start a treating apparatus for storm for virtual cloud desktop, it is characterized in that, comprising:
Virtual machine creating module, for creating the virtual machine that is provided with the application that all users must use;
Template-setup module, for keeping the current operating conditions of this virtual machine, and the image file used by this virtual machine is as template;
File cloning module, the image file used for utilizing this virtual machine clone book copying file, using as the backup file with this book copying file virtual cloud desktop one to one;
Starting module, for being supplied to user by virtual machine and the start of multiple stage virtual cloud desktop.
7. treating apparatus according to claim 6, is characterized in that, described file cloning module is for performing following steps:
Mark the image file base_volume that this virtual machine uses;
Qcow2 form is adopted image file base_volume to be cloned the xcopy of many parts of qcow2 forms.
8. treating apparatus according to claim 6, is characterized in that, also comprises Data write. module, for performing following steps:
When user needs write data, by the block copy in backup file backingfile in the xcopy of qcow2 form;
Then in the xcopy of the data these needs write stored in corresponding qcow2 form.
9. treating apparatus according to claim 6, is characterized in that, also comprises:
Data read module, for performing following steps:
When user needs to read data, first read from the xcopy of corresponding qcow2 form;
When the xcopy of this corresponding qcow2 form does not exist the data required for user, then search from the backup file backingfile of this xcopy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510784531.9A CN105389185A (en) | 2015-11-16 | 2015-11-16 | Method and apparatus for processing boot storm of virtual cloud desktops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510784531.9A CN105389185A (en) | 2015-11-16 | 2015-11-16 | Method and apparatus for processing boot storm of virtual cloud desktops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105389185A true CN105389185A (en) | 2016-03-09 |
Family
ID=55421492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510784531.9A Pending CN105389185A (en) | 2015-11-16 | 2015-11-16 | Method and apparatus for processing boot storm of virtual cloud desktops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105389185A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363671A (en) * | 2020-10-23 | 2021-02-12 | 中国电子科技网络信息安全有限公司 | Virtual machine template mirror image storage method based on fusion framework cloud platform |
| CN114860334A (en) * | 2022-04-24 | 2022-08-05 | 曙光信息产业(北京)有限公司 | Method, device, equipment and medium for processing virtual machine start storm |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7334095B1 (en) * | 2004-04-30 | 2008-02-19 | Network Appliance, Inc. | Writable clone of read-only volume |
| CN102708060A (en) * | 2012-05-14 | 2012-10-03 | 华为技术有限公司 | Method, device and system for accessing image files |
| CN102999369A (en) * | 2012-12-25 | 2013-03-27 | 杭州华三通信技术有限公司 | Method and device for upgrading virtual machines |
| CN103207805A (en) * | 2013-04-23 | 2013-07-17 | 深圳市京华科讯科技有限公司 | Virtualization-based hard disk reuse system |
| CN103369029A (en) * | 2013-05-15 | 2013-10-23 | 北京航空航天大学 | Synchronization method for local desktop and remote virtual desktop, system and use method of system |
| US20130346976A1 (en) * | 2008-11-11 | 2013-12-26 | Netapp Inc. | Cloning virtual machines |
| CN103618768A (en) * | 2013-11-15 | 2014-03-05 | 华为技术有限公司 | Method and related device for deploying virtual machine |
| CN103701870A (en) * | 2013-12-12 | 2014-04-02 | 上海兆民云计算科技有限公司 | Method for reducing power consumption generated in connection of desktop cloud terminal and server |
| CN103713941A (en) * | 2013-12-20 | 2014-04-09 | 汉柏科技有限公司 | Method and system for cloning virtual machine mirror images based on qcow2 format |
| CN103970585A (en) * | 2013-01-31 | 2014-08-06 | 杭州华三通信技术有限公司 | Method and device for creating virtual machine |
| CN104144172A (en) * | 2013-05-06 | 2014-11-12 | 上海宏第网络科技有限公司 | Cloud platform system and method based on desktop virtualization technology |
| CN105045663A (en) * | 2015-08-24 | 2015-11-11 | 湖南昇云科技有限公司 | Method and system for rapidly deploying virtual machine |
-
2015
- 2015-11-16 CN CN201510784531.9A patent/CN105389185A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7334095B1 (en) * | 2004-04-30 | 2008-02-19 | Network Appliance, Inc. | Writable clone of read-only volume |
| US20130346976A1 (en) * | 2008-11-11 | 2013-12-26 | Netapp Inc. | Cloning virtual machines |
| CN102708060A (en) * | 2012-05-14 | 2012-10-03 | 华为技术有限公司 | Method, device and system for accessing image files |
| CN102999369A (en) * | 2012-12-25 | 2013-03-27 | 杭州华三通信技术有限公司 | Method and device for upgrading virtual machines |
| CN103970585A (en) * | 2013-01-31 | 2014-08-06 | 杭州华三通信技术有限公司 | Method and device for creating virtual machine |
| CN103207805A (en) * | 2013-04-23 | 2013-07-17 | 深圳市京华科讯科技有限公司 | Virtualization-based hard disk reuse system |
| CN104144172A (en) * | 2013-05-06 | 2014-11-12 | 上海宏第网络科技有限公司 | Cloud platform system and method based on desktop virtualization technology |
| CN103369029A (en) * | 2013-05-15 | 2013-10-23 | 北京航空航天大学 | Synchronization method for local desktop and remote virtual desktop, system and use method of system |
| CN103618768A (en) * | 2013-11-15 | 2014-03-05 | 华为技术有限公司 | Method and related device for deploying virtual machine |
| CN103701870A (en) * | 2013-12-12 | 2014-04-02 | 上海兆民云计算科技有限公司 | Method for reducing power consumption generated in connection of desktop cloud terminal and server |
| CN103713941A (en) * | 2013-12-20 | 2014-04-09 | 汉柏科技有限公司 | Method and system for cloning virtual machine mirror images based on qcow2 format |
| CN105045663A (en) * | 2015-08-24 | 2015-11-11 | 湖南昇云科技有限公司 | Method and system for rapidly deploying virtual machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363671A (en) * | 2020-10-23 | 2021-02-12 | 中国电子科技网络信息安全有限公司 | Virtual machine template mirror image storage method based on fusion framework cloud platform |
| CN112363671B (en) * | 2020-10-23 | 2022-07-05 | 中国电子科技网络信息安全有限公司 | Virtual machine template mirror image storage method based on fusion framework cloud platform |
| CN114860334A (en) * | 2022-04-24 | 2022-08-05 | 曙光信息产业(北京)有限公司 | Method, device, equipment and medium for processing virtual machine start storm |
| CN114860334B (en) * | 2022-04-24 | 2024-01-26 | 曙光信息产业(北京)有限公司 | Processing method, device, equipment and medium for virtual machine starting storm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11734125B2 (en) | Tiered cloud storage for different availability and performance requirements | |
| DK3008600T3 (en) | Backup of a virtual machine from a storage snapshot | |
| US10162722B2 (en) | Virtual machine aware replication method and system | |
| US8555278B2 (en) | Method and system for migrating a selected set of virtual machines between volumes | |
| US8683156B2 (en) | Format-preserving deduplication of data | |
| US8195619B2 (en) | Extent reference count update system and method | |
| US8924353B1 (en) | Systems and methods for copying database files | |
| JP5547727B2 (en) | System and method for tracking changes to volumes | |
| US8615488B2 (en) | Physical replication of database subset to improve availability and reduce resource cost in a cloud environment | |
| WO2016010570A1 (en) | Partial snapshot creation | |
| CN107924324B (en) | Data access accelerator | |
| US8572338B1 (en) | Systems and methods for creating space-saving snapshots | |
| US20110088029A1 (en) | Server image capacity optimization | |
| AU2018318401A1 (en) | Thin provisioning virtual desktop infrastructure virtual machines in cloud environments without thin clone support | |
| US20140082275A1 (en) | Server, host and method for reading base image through storage area network | |
| US20210247907A1 (en) | Enabling access to a partially migrated dataset | |
| CN105389185A (en) | Method and apparatus for processing boot storm of virtual cloud desktops | |
| US20190188085A1 (en) | Persistently store cached data of a write to a block device presentation | |
| JP2017531892A (en) | Improved apparatus and method for performing a snapshot of a block level storage device | |
| US11119682B2 (en) | Compressed extent versions | |
| CN101876884B (en) | Volume extension method of virtual hard disk | |
| EP3264254B1 (en) | System and method for a simulation of a block storage system on an object storage system | |
| US11196806B2 (en) | Method and apparatus for replicating data between storage systems | |
| Nakashima et al. | File Placing Control for Improving the I/O Performance of Hadoop in Virtualized Environment | |
| CN103559103A (en) | Data replication method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20210115 |