CN112068927A - Method and system for redirecting CD-RW (compact disk) of cloud desktop - Google Patents
Method and system for redirecting CD-RW (compact disk) of cloud desktop Download PDFInfo
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- CN112068927A CN112068927A CN202010806419.1A CN202010806419A CN112068927A CN 112068927 A CN112068927 A CN 112068927A CN 202010806419 A CN202010806419 A CN 202010806419A CN 112068927 A CN112068927 A CN 112068927A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000013507 mapping Methods 0.000 abstract description 18
- 230000003993 interaction Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/105—Program control for peripheral devices where the programme performs an input/output emulation function
- G06F13/107—Terminal emulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45579—I/O management, e.g. providing access to device drivers or storage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The invention provides a method and a system for redirecting a recorder of a cloud desktop in the technical field of the cloud desktop, wherein the method comprises the following steps: step S10, a virtual CD writer is established on the virtual machine of the server; step S20, after the virtual CD writer obtains the physical equipment information and the equipment capability of the physical CD writer, the physical CD writer is initialized; step S30, the virtual recorder redirects the recording request of the virtual machine to the physical recorder, and the physical recorder performs the read/write operation. The invention has the advantages that: the compatibility, the recording speed and the stability of the recorder mapping are greatly improved.
Description
Technical Field
The invention relates to the technical field of cloud desktops, in particular to a method and a system for redirecting a recorder of a cloud desktop.
Background
The cloud desktop is an application of a cloud computing technology, that is, virtualization software is installed in a server in a data center room through a virtualization technology, and a plurality of virtual machines with relatively independent CPUs and memory resources are created by configuring the virtualization software. Therefore, an actual server can be divided into a plurality of virtual machines, so that the virtual machines can be independently used by a plurality of users, different users use different virtual machines, CPU and memory resources cannot be mutually occupied, and mutual conflict caused by operation in the same machine cannot occur. In the application scene of the cloud desktop, in order to meet the use habits of most users, a Windows operating system is generally installed on the virtual machine, and the user uses the desktop service of the virtual machine, which is similar to the normal use of a computer, to browse the web pages, edit the documents and the like.
Because the cloud desktop is a virtualized operating system running on the remote server, the system does not have a recorder, and if the cloud desktop protocol is simply used to access the virtual machine, the file recording operation cannot be performed. In order to solve the problem of file recording, the following method is conventionally adopted: and mapping the local USB recorder into the virtual machine for use through a USB mapping technology. However, the conventional method has the following disadvantages:
1. the USB mapping can only map a USB burner, and the burner connected through a non-USB interface on a desktop computer or a notebook computer cannot be mapped; 2. the USB mapping is essentially the forwarding of the USB instruction without difference, and in actual use, as the interaction logic of the USB instruction is complicated, the burning process of the USB burning machine is extremely slow after the USB mapping is used; 3. the USB mapping is a USB port mapping technology, the USB protocol has extremely high requirements on instruction time sequence, and after the USB equipment passes the USB mapping, the burning failure is easily caused by the fact that the USB port drives to discard the instruction due to instruction overtime.
Therefore, how to provide a method and a system for redirecting a recorder of a cloud desktop to improve the compatibility, recording speed and stability of recorder mapping becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a system for redirecting a recorder for a cloud desktop, so as to improve the mapping compatibility, recording speed and stability of the recorder.
In a first aspect, the present invention provides a method for redirecting a recorder on a cloud desktop, including the following steps:
step S10, a virtual CD writer is established on the virtual machine of the server;
step S20, after the virtual CD writer obtains the physical equipment information and the equipment capability of the physical CD writer, the physical CD writer is initialized;
step S30, the virtual recorder redirects the recording request of the virtual machine to the physical recorder, and the physical recorder performs the read/write operation.
Further, the step S10 specifically includes:
step S11, creating a PDO device on the virtual USB bus of the server, and sending the notification of the arrival of the device to the virtual machine;
step S12, after receiving the notification, the virtual machine sends a USB instruction for acquiring the virtual equipment information to the virtual USB bus;
step S13, the virtual USB bus creates virtual device information and sends the virtual device information to the virtual machine in the form of URB data packet;
and step S14, loading the PDO equipment by the virtual machine through a large-capacity storage driver based on the received virtual equipment information, and completing the creation of the virtual CD-RW.
Further, the virtual device information includes at least a device type and a device ID.
Further, the step S20 specifically includes:
step S21, the virtual CD-RW sends an INQUIRY instruction to the computer; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder;
step S22, the virtual CD-RW sends READ CAPACITY command to the computer; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder;
step S23, the virtual CD-RW sends RMODE SENSE instruction to the computer; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
Further, the physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
In a second aspect, the present invention provides a recorder redirection system for a cloud desktop, including the following modules:
the virtual recorder creating module is used for creating a virtual recorder on a virtual machine of the server;
the physical recorder initialization module is used for initializing the physical recorder after the virtual recorder acquires the physical equipment information and the equipment capability of the physical recorder;
and the recorder redirection module is used for redirecting the recording request of the virtual machine to the physical recorder by the virtual recorder and performing read-write operation by the physical recorder.
Further, the virtual recorder creating module specifically includes:
the PDO equipment creating unit is used for creating PDO equipment on a virtual USB bus of the server and sending a notice of equipment arrival to the virtual machine;
the USB instruction sending unit is used for sending a USB instruction for acquiring the virtual equipment information to the virtual USB bus after the virtual machine receives the notification;
the virtual equipment information sending unit is used for establishing virtual equipment information by a virtual USB bus and sending the virtual equipment information to a virtual machine in the form of a URB data packet;
and the mass storage driver loading unit is used for loading the PDO equipment by the mass storage driver based on the received virtual equipment information by the virtual machine so as to complete the creation of the virtual recorder.
Further, the virtual device information includes at least a device type and a device ID.
Further, the initialization module of the physical recorder specifically includes:
the physical equipment information acquisition unit is used for sending an INQUIRY command to the computer by the virtual recorder; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder;
a device capability obtaining unit, configured to send READ CAPACITY an instruction to the computer by the virtual recorder; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder;
the initialization parameter setting unit is used for sending an RMODE SENSE instruction to the computer by the virtual CD-RW; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
Further, the physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
The invention has the advantages that:
the PDO equipment is loaded on the virtual machine through the large-capacity storage drive, the virtual recorder is established, namely the virtual recorder with the type of SCSI equipment is established, the SCSI instruction (INQUIRY instruction, READ CAPACITY instruction and RMODE SENSE instruction) is used for operating the physical recorder, the recording request of the virtual machine is redirected to the physical recorder through the virtual recorder, compared with the traditional method that the physical recorder is operated through a USB instruction, the non-USB-connected recorder can be mapped, the compatibility of the recorder mapping is greatly improved, the interaction of the instructions is greatly reduced, the recording speed of the recorder is greatly improved, errors cannot be generated in the recording process due to USB time delay, and the stability of the recorder mapping is greatly improved.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flowchart of a burner redirection method for a cloud desktop according to the present invention.
Fig. 2 is a schematic structural diagram of a burner redirection system for a cloud desktop according to the present invention.
Fig. 3 is a hardware architecture diagram of the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the virtual SCSI device (virtual CD-RW) is established on a virtual machine of a server, the virtual SCSI device is informed to the virtual machine through a SCSI instruction, the SCSI device is the CD-RW, data interaction between the virtual CD-RW and the virtual machine is achieved, the SCSI instruction generated when the virtual CD-RW is used by the virtual machine is obtained, interaction is further carried out with the physical CD-RW through the SCSI instruction, interaction between the physical CD-RW and the virtual machine is achieved, and the purpose of mapping (redirection) of the CD-RW is achieved.
Referring to fig. 1 to fig. 3, a preferred embodiment of a method for redirecting a recorder on a cloud desktop according to the present invention includes the following steps:
step S10, a virtual CD writer is established on the virtual machine of the server;
step S20, after the virtual CD writer obtains the physical equipment information and the equipment capability of the physical CD writer, the physical CD writer is initialized;
step S30, the virtual recorder redirects the recording request of the virtual machine to the physical recorder, and performs READ/WRITE operations (READ and WRITE operations) through the physical recorder.
The step S10 specifically includes:
step S11, creating a PDO device (physical device) on the virtual USB bus of the server, and sending a notification of device arrival to the virtual machine; the virtual USB bus is used for notifying the virtual machine of the arrival of equipment and realizing the simultaneous mapping of a plurality of physical recorders;
step S12, after receiving the notification, the virtual machine sends a USB instruction for acquiring the virtual equipment information to the virtual USB bus;
step S13, the virtual USB bus creates virtual device information and sends the virtual device information to the virtual machine in the form of URB (USB request block) data packet;
and step S14, loading the PDO equipment by the virtual machine through a large-capacity storage driver based on the received virtual equipment information, and completing the creation of the virtual CD-RW.
The virtual device information includes at least a device type and a device ID.
The step S20 specifically includes:
step S21, the virtual CD-RW sends an INQUIRY command (query command) to the computer; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder; sending the physical equipment information to the virtual recorder specifically is sending the physical equipment information to the PDO equipment, and the PDO equipment packages the physical equipment information by using a URB format and then returns the physical equipment information to the large-capacity storage driver;
step S22, the virtual CD-RW sends READ CAPACITY command to the computer; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder; sending the equipment capacity to the virtual recorder, specifically sending the equipment capacity to the PDO equipment, and packaging the equipment capacity by using a URB format and then returning the packaged equipment capacity to the mass storage driver by the PDO equipment;
step S23, the virtual CD-RW sends RMODE SENSE instruction to the computer; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
The INQUIRY instruction, the READ CAPACITY instruction and the RMODE SENSE instruction are SCSI instructions.
The physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
The invention discloses a preferred embodiment of a recorder redirection system for a cloud desktop, which comprises the following modules:
the virtual recorder creating module is used for creating a virtual recorder on a virtual machine of the server;
the physical recorder initialization module is used for initializing the physical recorder after the virtual recorder acquires the physical equipment information and the equipment capability of the physical recorder;
and the recorder redirection module is used for redirecting the recording request of the virtual machine to the physical recorder by the virtual recorder and performing READ-WRITE operation (READ and WRITE operation) by the physical recorder.
The virtual recorder creation module specifically includes:
a PDO device creation unit configured to create a PDO device (physical device) on a virtual USB bus of the server, and send a notification of device arrival to the virtual machine; the virtual USB bus is used for notifying the virtual machine of the arrival of equipment and realizing the simultaneous mapping of a plurality of physical recorders;
the USB instruction sending unit is used for sending a USB instruction for acquiring the virtual equipment information to the virtual USB bus after the virtual machine receives the notification;
the virtual device information sending unit is used for creating virtual device information by a virtual USB bus and sending the virtual device information to a virtual machine in the form of a URB (USB request block) data packet;
and the mass storage driver loading unit is used for loading the PDO equipment by the mass storage driver based on the received virtual equipment information by the virtual machine so as to complete the creation of the virtual recorder.
The virtual device information includes at least a device type and a device ID.
The initialization module of the physical recorder specifically comprises:
a physical device information obtaining unit, configured to send an INQUIRY command to the computer by the virtual recorder; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder; sending the physical equipment information to the virtual recorder specifically is sending the physical equipment information to the PDO equipment, and the PDO equipment packages the physical equipment information by using a URB format and then returns the physical equipment information to the large-capacity storage driver;
a device capability obtaining unit, configured to send READ CAPACITY an instruction to the computer by the virtual recorder; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder; sending the equipment capacity to the virtual recorder, specifically sending the equipment capacity to the PDO equipment, and packaging the equipment capacity by using a URB format and then returning the packaged equipment capacity to the mass storage driver by the PDO equipment;
the initialization parameter setting unit is used for sending an RMODE SENSE instruction to the computer by the virtual CD-RW; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
The INQUIRY instruction, the READ CAPACITY instruction and the RMODE SENSE instruction are SCSI instructions.
The physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
In summary, the invention has the advantages that:
the PDO equipment is loaded on the virtual machine through the large-capacity storage drive, the virtual recorder is established, namely the virtual recorder with the type of SCSI equipment is established, the SCSI instruction (INQUIRY instruction, READ CAPACITY instruction and RMODE SENSE instruction) is used for operating the physical recorder, the recording request of the virtual machine is redirected to the physical recorder through the virtual recorder, compared with the traditional method that the physical recorder is operated through a USB instruction, the non-USB-connected recorder can be mapped, the compatibility of the recorder mapping is greatly improved, the interaction of the instructions is greatly reduced, the recording speed of the recorder is greatly improved, errors cannot be generated in the recording process due to USB time delay, and the stability of the recorder mapping is greatly improved.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A CD-RW redirection method for a cloud desktop is characterized in that: the method comprises the following steps:
step S10, a virtual CD writer is established on the virtual machine of the server;
step S20, after the virtual CD writer obtains the physical equipment information and the equipment capability of the physical CD writer, the physical CD writer is initialized;
step S30, the virtual recorder redirects the recording request of the virtual machine to the physical recorder, and the physical recorder performs the read/write operation.
2. The burner redirection method for cloud desktop as claimed in claim 1, wherein: the step S10 specifically includes:
step S11, creating a PDO device on the virtual USB bus of the server, and sending the notification of the arrival of the device to the virtual machine;
step S12, after receiving the notification, the virtual machine sends a USB instruction for acquiring the virtual equipment information to the virtual USB bus;
step S13, the virtual USB bus creates virtual device information and sends the virtual device information to the virtual machine in the form of URB data packet;
and step S14, loading the PDO equipment by the virtual machine through a large-capacity storage driver based on the received virtual equipment information, and completing the creation of the virtual CD-RW.
3. The burner redirection method for cloud desktop as claimed in claim 2, wherein: the virtual device information includes at least a device type and a device ID.
4. The burner redirection method for cloud desktop as claimed in claim 1, wherein: the step S20 specifically includes:
step S21, the virtual CD-RW sends an INQUIRY instruction to the computer; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder;
step S22, the virtual CD-RW sends READ CAPACITY command to the computer; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder;
step S23, the virtual CD-RW sends RMODE SENSE instruction to the computer; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
5. The burner redirection method for cloud desktop as claimed in claim 4, wherein: the physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
6. The utility model provides a CD-RW machine redirection system for cloud desktop which characterized in that: the system comprises the following modules:
the virtual recorder creating module is used for creating a virtual recorder on a virtual machine of the server;
the physical recorder initialization module is used for initializing the physical recorder after the virtual recorder acquires the physical equipment information and the equipment capability of the physical recorder;
and the recorder redirection module is used for redirecting the recording request of the virtual machine to the physical recorder by the virtual recorder and performing read-write operation by the physical recorder.
7. The burner redirection system for cloud desktops, according to claim 6, wherein: the virtual recorder creation module specifically includes:
the PDO equipment creating unit is used for creating PDO equipment on a virtual USB bus of the server and sending a notice of equipment arrival to the virtual machine;
the USB instruction sending unit is used for sending a USB instruction for acquiring the virtual equipment information to the virtual USB bus after the virtual machine receives the notification;
the virtual equipment information sending unit is used for establishing virtual equipment information by a virtual USB bus and sending the virtual equipment information to a virtual machine in the form of a URB data packet;
and the mass storage driver loading unit is used for loading the PDO equipment by the mass storage driver based on the received virtual equipment information by the virtual machine so as to complete the creation of the virtual recorder.
8. The burner redirection system for cloud desktops, according to claim 7, wherein: the virtual device information includes at least a device type and a device ID.
9. The burner redirection system for cloud desktops, according to claim 6, wherein: the initialization module of the physical recorder specifically comprises:
the physical equipment information acquisition unit is used for sending an INQUIRY command to the computer by the virtual recorder; the computer acquires the physical equipment information of the physical recorder through an API (application program interface) based on the received INQUIRY instruction and sends the physical equipment information to the virtual recorder;
a device capability obtaining unit, configured to send READ CAPACITY an instruction to the computer by the virtual recorder; the computer acquires the equipment capability of the physical recorder through an API (application programming interface) based on the received READ CAPACITY instruction and sends the equipment capability to the virtual recorder;
the initialization parameter setting unit is used for sending an RMODE SENSE instruction to the computer by the virtual CD-RW; and the computer sets the initialization parameters of the physical recorder through the API based on the received RMODE SENSE instruction, and completes the initialization of the physical recorder.
10. The burner redirection system for cloud desktops, according to claim 9, wherein: the physical device information includes at least a device type and a device ID; the equipment capability at least comprises recording capacity, recording speed and buffer memory size; the initialization parameters at least comprise the working mode of the recorder.
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| CN202010806419.1A CN112068927B (en) | 2020-08-12 | 2020-08-12 | Recorder redirection method and system for cloud desktop |
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| CN202010806419.1A CN112068927B (en) | 2020-08-12 | 2020-08-12 | Recorder redirection method and system for cloud desktop |
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| US20030076759A1 (en) * | 2001-10-18 | 2003-04-24 | Vincent Yu | Writing failure preventing method and device for CD-Writers |
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