CN113064614B - Firmware upgrading method and system for redundant power supply system of server - Google Patents
Firmware upgrading method and system for redundant power supply system of server Download PDFInfo
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- CN113064614B CN113064614B CN202110325732.8A CN202110325732A CN113064614B CN 113064614 B CN113064614 B CN 113064614B CN 202110325732 A CN202110325732 A CN 202110325732A CN 113064614 B CN113064614 B CN 113064614B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000012797 qualification Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
Abstract
The application discloses a method and a system for upgrading firmware of a redundant power supply system of a server, wherein the method comprises the following steps: selecting a redundant power supply of a server to be upgraded; judging whether at least one performance parameter of the N-1 server redundant power supplies except the power supply is qualified; if yes, judging whether the redundant power supply of the server to be upgraded is a main device; if yes, switching the redundant power supply of the server to be upgraded into a standby device or a load sharing mode; the method comprises the steps of upgrading system firmware of a redundant power supply of a server to be upgraded; and (3) in the N-1 server redundant power supplies, reselecting the next server redundant power supply, and upgrading the system firmware until all the power supplies are upgraded. The system comprises: the system comprises a server redundant power supply determining module to be upgraded, a first judging module, a second judging module, a mode switching module, a firmware upgrading module and a circulating module. The application can realize the uninterrupted power supply asynchronous firmware upgrade, and is beneficial to improving the stability and reliability of the server firmware upgrade.
Description
Technical Field
The application relates to the technical field of server power supply system upgrading, in particular to a method and a system for upgrading firmware of a server redundant power supply system.
Background
The operation of the server needs a stable and reliable power supply system, and with the development of server technology, the requirements of users on the power supply system of the server are also increasing. The server power supply system usually adopts a redundant design so as to ensure the power supply stability when the server encounters emergency power failure. How to upgrade the firmware of the redundant power supply system of the server, so as to ensure that the power supply system of the server can better supply power to the server is an important technical problem.
The current method for upgrading the firmware of the redundant power supply system of the server generally adopts a power-off upgrading method. Specifically, firstly, the servers are powered off, then firmware upgrading is carried out on redundant power supplies of each server respectively, and after all power supply firmware upgrading is finished, the servers are powered on.
However, in the current method for upgrading the firmware of the redundant power supply system of the server, the normal operation of the server is affected due to the fact that the power supply of the server needs to be in a power-off state, so that the working efficiency of the server is affected.
Disclosure of Invention
The application provides a method and a system for upgrading firmware of a server redundant power supply system, which are used for solving the problem that the working efficiency of a server is affected by the upgrading of the firmware of the server redundant power supply in the prior art.
In order to solve the technical problems, the embodiment of the application discloses the following technical scheme:
a method for upgrading firmware of a server redundant power supply system, wherein the number of the server redundant power supplies is N, N is a natural number, and N is more than or equal to 2, and the method comprises the following steps:
selecting one server redundant power supply of the current system firmware to be upgraded, and defining the server redundant power supply as the server redundant power supply to be upgraded;
judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supplies to be upgraded is qualified in performance parameters;
if at least one of the performance parameters of the server redundant power supplies is qualified, judging whether the server redundant power supply to be upgraded is a main device in a main and standby mode of the server power supply;
if the server to be upgraded is the main equipment, switching the redundant power supply of the server to be upgraded into the standby equipment in the main and standby modes of the server power supply or the server power supply in the load sharing mode;
carrying out system firmware upgrading on the redundant power supply of the server to be upgraded;
and in the N-1 server redundant power supplies, the server redundant power supply of the next system firmware to be upgraded is reselected, and the system firmware is upgraded until the system firmware of the N server redundant power supplies is upgraded.
Optionally, the method further comprises: if the performance parameters of the N-1 server redundant power supplies are all disqualified, judging that the server redundant power supplies to be upgraded fail to be upgraded;
and recording the number of times of system firmware upgrade failure.
Optionally, before selecting one of the server redundant power supplies of the system firmware to be upgraded, the method further comprises:
and starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
Optionally, after the firmware of the redundant power supply system of the startup server is upgraded, the method further comprises:
a power image for system firmware upgrades is stored.
Optionally, the performance parameters include: output current, input voltage, output voltage, temperature, internal fan operating parameters, and unknown errors.
Optionally, the criterion for qualifying the performance parameter is: the output current is less than or equal to a set output current threshold value, the set minimum input voltage is less than or equal to the set maximum input voltage, the set minimum output voltage is less than or equal to the output voltage and less than or equal to the set maximum output voltage, the temperature is less than or equal to a set temperature threshold value, and the internal fan is free from faults and unknown errors.
A firmware upgrade system of a server redundant power supply system, wherein the number of the server redundant power supplies is N, N is a natural number, and N is more than or equal to 2, and the system comprises:
the system comprises a to-be-upgraded server redundant power supply determining module, a to-be-upgraded server redundant power supply determining module and a power supply determining module, wherein the to-be-upgraded server redundant power supply determining module is used for selecting one server redundant power supply of the current to-be-upgraded system firmware and defining the server redundant power supply as the to-be-upgraded server redundant power supply;
the first judging module is used for judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supply to be upgraded is qualified in performance parameters;
the second judging module is used for judging whether the server redundant power supply to be upgraded is a main device in a server power supply main-standby mode or not when the performance parameters of at least one server redundant power supply are qualified;
the mode switching module is used for switching the redundant power supply of the server to be upgraded into the standby equipment in the server power supply main standby mode or the server power supply in the load sharing mode when the redundant power supply of the server to be upgraded is the main equipment in the server power supply main standby mode;
the firmware upgrading module is used for upgrading the system firmware of the redundant power supply of the server to be upgraded;
and the circulating module is used for starting the server redundant power supply determining module to be upgraded in the N-1 server redundant power supplies, reselecting the server redundant power supply of the next system firmware to be upgraded, calling the first judging module, the second judging module, the mode switching module and the firmware upgrading module, and upgrading the system firmware of the server redundant power supply of the next system firmware to be upgraded until the system firmware of the N server redundant power supplies is upgraded.
Optionally, the system further comprises:
and the recording module is used for recording the number of times of system firmware upgrade failure once when the performance parameters of the N-1 server redundant power supplies are all disqualified.
Optionally, the system further comprises:
and the starting module is used for starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
Optionally, the system further comprises:
and the storage module is used for storing a power supply image, and the power supply image is used for upgrading system firmware.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
the application provides a method for upgrading firmware of a server redundant power supply system, which comprises the steps of firstly selecting a server redundant power supply of a current system firmware to be upgraded, then carrying out judging operation twice, judging whether at least one server redundant power supply with qualified performance exists in power supplies other than the current server redundant power supply to be upgraded for the first time, if the system firmware fails to upgrade, the firmware of the current server redundant power supply cannot be upgraded, and the performance of other server redundant power supplies needs to be adjusted first, so that the performance of any one server redundant power supply can be qualified and then the upgrade can be continued.
When the first judgment meets the condition, namely when the server redundant power supply with qualified performance is available, the second judgment operation is carried out, whether the server redundant power supply to be upgraded is a main device or not is judged, if the server redundant power supply to be upgraded is the main device, the server redundant power supply is required to be switched into a non-main device, namely: a backup device or a server power supply in load sharing mode. The switching method can ensure that the current redundant power supply of the server to be upgraded is a non-master device, and the non-master device cannot cause great influence on the whole power supply, so that the influence of abnormal phenomena in the firmware upgrading process on the whole power supply process of the server can be avoided, and the stability and the reliability of the firmware upgrading of the server are improved. After the switching is finished, the firmware upgrading is carried out on the redundant power supplies of the servers to be upgraded, and finally, the firmware upgrading is sequentially carried out on the rest N-1 redundant power supplies of the servers by adopting the same method. In the firmware upgrading process of the server redundant power supply, asynchronous upgrading is sequentially carried out on each server redundant power supply instead of all the redundant power supplies, so that at least one qualified server redundant power supply can be ensured to work in the upgrading process of the server redundant power supply, the whole server system is not powered off, the server can carry out normal service, and the working efficiency of the server is improved. By judging the performance parameters of the rest of the non-updated server redundant power supplies and judging the mode of the server redundant power supply to be updated, the performance parameters of at least one server redundant power supply can be ensured to be qualified and in a normal working state, and the server redundant power supply to be updated is not main equipment and is updated, and the two judging steps can further ensure that the server redundant power supply is normally powered outside in the firmware updating process, thereby being beneficial to improving the stability and the reliability of the firmware updating of the server.
The application also provides a firmware upgrading system of the server redundant power supply system, which mainly comprises: the system comprises a server redundant power supply determining module to be upgraded, a first judging module, a second judging module, a mode switching module, a firmware upgrading module and a circulating module. Through the first judging module, whether the N-1 redundant power supplies except the redundant power supplies of the server to be upgraded are qualified in performance parameters is judged at first, if the redundant power supplies with qualified performance parameters are not available at the moment, the system firmware upgrade fails, the firmware upgrade of the current redundant power supplies of the server cannot be carried out, the performance of the redundant power supplies of other servers is required to be adjusted first, and after the performance of any one of the redundant power supplies of the server is qualified, the upgrade can be continued. The mode of the redundant power supply of the server to be upgraded can be further judged through the second judging module and the mode switching module, and the server is only upgraded if the redundant power supply of the server to be upgraded is not the main equipment, and if the main equipment is to be switched into the non-main equipment through the mode switching module, the normal power supply to the outside in the process of upgrading the firmware of the redundant power supply of the server can be further ensured, and the stability and the reliability of upgrading the firmware of the server are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a flowchart of a firmware upgrade method for a redundant power supply system of a server according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a firmware upgrade system for a redundant power supply system of a server according to an embodiment of the present application.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
For a better understanding of the present application, embodiments of the present application are explained in detail below with reference to the drawings.
Example 1
Referring to fig. 1, fig. 1 is a flowchart of a firmware upgrade method for a redundant power supply system of a server according to an embodiment of the present application. As can be seen from fig. 1, the firmware upgrade method for the redundant power supply system of the present embodiment mainly includes the following steps:
s3: one server redundant power supply of the current system firmware to be upgraded is selected and defined as the server redundant power supply to be upgraded.
The number of redundant power supplies of the server in this embodiment is set to be N, where N is a natural number, and N is greater than or equal to 2. And upgrading the asynchronous system firmware one by one aiming at each server redundant power supply. Firstly, selecting a server redundant power supply as a current server redundant power supply to be upgraded.
Further, step S3 is preceded by step S1: and starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
As can be seen from step S1, the method for starting up the firmware upgrade of the redundant power supply of the server according to the present embodiment mainly includes two methods: web page forms, that is, web functions that utilize the BMC, and Command forms.
After starting the system firmware upgrade through step S1, the method further includes executing step S2: a power image for system firmware upgrades is stored. In particular, the power supply image may be stored in the TF card. The power mirror image is stored first before the firmware is upgraded, so that the influence of faults in the upgrading process can be avoided, for example: the power-down of the AC (Alternating Current ) or the continuous refreshing of the BMC (Baseboard Management Controller ) after restarting is beneficial to improving the stability and reliability of the firmware upgrade of the redundant power supply of the server.
With continued reference to fig. 1, after the firmware upgrade of the redundant power system of the server is started, step S4 is performed: judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supplies to be upgraded is qualified in performance parameters.
The performance parameters of the redundant power supply of the server in this embodiment mainly include: output current, input voltage, output voltage, temperature, internal fan operating parameters, and unknown errors.
The qualified judgment standard of the performance parameters is as follows: the output current is less than or equal to a set output current threshold value, the set minimum input voltage is less than or equal to the set maximum input voltage, the set minimum output voltage is less than or equal to the output voltage and less than or equal to the set maximum output voltage, the temperature is less than or equal to a set temperature threshold value, and the internal fan is free from faults and unknown errors. Otherwise, judging that the performance parameters of the redundant power supply of the current server are unqualified.
If all the performance parameters of the N-1 server redundant power supplies are not qualified, executing the step S5: and judging that the redundant power supply of the server to be upgraded fails in upgrading, namely, not carrying out system firmware upgrading operation on the current redundant power supply of the server to be upgraded.
Further, after determining that the upgrade of the redundant power supply of the server to be upgraded fails, step S6 is executed: and recording the number of times of system firmware upgrade failure. The number of times of upgrade failure is continued, so that the number of times of upgrade failure can be used as the basis for evaluating the performance of a redundant power supply of a subsequent server and a reference database for upgrading the firmware of the subsequent system, the subsequent modification of an upgrade strategy is facilitated, and the efficiency and quality of upgrading the firmware of the system are improved.
By judging the performance parameters of the redundant power supplies except the redundant power supplies of the server to be upgraded, the power supply is prevented from being upgraded to cause the power failure of the server, so that the uninterrupted power supply is upgraded, and the working efficiency of the server is improved.
If at least one of the performance parameters of the server redundant power supplies is acceptable, executing step S7: and judging whether the redundant power supply of the server to be upgraded is a main device in the main and standby modes of the server power supply.
If the device is the master device, execute step S8: and switching the redundant power supply of the server to be upgraded into the standby equipment in the main standby mode of the server power supply or the server power supply in the load sharing mode.
S9: and upgrading the system firmware of the redundant power supply of the server to be upgraded.
If not the master, step S9 is directly performed. The working mode of the redundant power supply of the server to be upgraded at present is judged, so that the redundant power supply of the server to be upgraded is in a non-main equipment mode, the server power failure caused by abnormal faults in the upgrading process is avoided, the influence of the abnormal faults on the upgrading of the redundant power supply of the server is reduced, and the reliability and the stability of the firmware upgrading of the redundant power supply of the server are improved.
Returning to the step S3: and in the N-1 server redundant power supplies, the server redundant power supply of the next system firmware to be upgraded is reselected, and the system firmware is upgraded until the system firmware of the N server redundant power supplies is upgraded.
Further, after all the N redundant power supply system firmware of the server are upgraded, the data generated in the upgrading process are cleared, so that the firmware refreshing of the power supply system is completed, system resources are saved, and the resource utilization rate is improved.
Example two
Referring to fig. 2 on the basis of the embodiment shown in fig. 1, fig. 2 is a schematic structural diagram of a firmware upgrade system of a redundant power supply system of a server according to an embodiment of the present application. As can be seen from fig. 2, the firmware upgrade system of the server redundant power system in this embodiment mainly includes: : the system comprises a server redundant power supply determining module to be upgraded, a first judging module, a second judging module, a mode switching module, a firmware upgrading module and a circulating module.
The system comprises a server redundant power supply determining module, a server redundant power supply updating module and a server redundant power supply updating module, wherein the server redundant power supply determining module is used for selecting one server redundant power supply of the current system firmware to be updated and defining the server redundant power supply as the server redundant power supply to be updated; the first judging module is used for judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supply to be upgraded is qualified in performance parameters; the second judging module is used for judging whether the redundant power supply of the server to be upgraded is a main device in the main and standby modes of the server power supply or not when the performance parameters of at least one redundant power supply of the server are qualified; the mode switching module is used for switching the redundant power supply of the server to be upgraded into the standby device in the server power supply main standby mode or the server power supply in the load sharing mode when the redundant power supply of the server to be upgraded is the main device in the server power supply main standby mode; the firmware upgrading module is used for upgrading the system firmware of the redundant power supply of the server to be upgraded; and the circulating module is used for starting the server redundant power supply determining module to be upgraded in the N-1 server redundant power supplies, reselecting the server redundant power supply of the next system firmware to be upgraded, calling the first judging module, the second judging module, the mode switching module and the firmware upgrading module, and upgrading the system firmware of the server redundant power supply of the next system firmware to be upgraded until the system firmware of the N server redundant power supplies is upgraded.
Further, the firmware upgrade system of the server redundant power supply system of the embodiment further includes a recording module, configured to record the number of times of system firmware upgrade failure once when the performance parameters of the N-1 server redundant power supplies are all disqualified.
And the starting module is used for starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
And the storage module is used for storing a power supply image, and the power supply image is used for upgrading system firmware.
The working principle and working method of the firmware upgrade system of the redundant power supply system of the server in this embodiment are already described in detail in the embodiment shown in fig. 1, and reference may be made between the two embodiments, which are not described herein again.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for upgrading firmware of a server redundant power supply system is characterized in that the number of the server redundant power supplies is N, N is a natural number, and N is more than or equal to 2, and the method comprises the following steps:
selecting one server redundant power supply of the current system firmware to be upgraded, and defining the server redundant power supply as the server redundant power supply to be upgraded;
judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supplies to be upgraded is qualified in performance parameters;
if at least one of the performance parameters of the server redundant power supplies is qualified, judging whether the server redundant power supply to be upgraded is a main device in a main and standby mode of the server power supply;
if the server to be upgraded is the main equipment, switching the redundant power supply of the server to be upgraded into the standby equipment in the main and standby modes of the server power supply or the server power supply in the load sharing mode;
carrying out system firmware upgrading on the redundant power supply of the server to be upgraded;
and in the N-1 server redundant power supplies, the server redundant power supply of the next system firmware to be upgraded is reselected, and the system firmware is upgraded until the system firmware of the N server redundant power supplies is upgraded.
2. The method for upgrading firmware of a redundant power supply system of claim 1, further comprising: if the performance parameters of the N-1 server redundant power supplies are all disqualified, judging that the server redundant power supplies to be upgraded fail to be upgraded;
and recording the number of times of system firmware upgrade failure.
3. The method for upgrading firmware of a server redundant power supply system according to claim 1, wherein before selecting a server redundant power supply of a system firmware to be currently upgraded, the method further comprises:
and starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
4. A method for upgrading firmware of a redundant power supply system of a server according to claim 3, wherein after starting the firmware upgrade of the redundant power supply system of the server, the method further comprises:
a power image for system firmware upgrades is stored.
5. A method for upgrading firmware of a redundant power supply system of a server according to any of claims 1-4, wherein said performance parameters include: output current, input voltage, output voltage, temperature, internal fan operating parameters, and unknown errors.
6. The method for upgrading firmware of a redundant power supply system of claim 5, wherein the performance parameter qualification criterion is: the output current is less than or equal to a set output current threshold value, the set minimum input voltage is less than or equal to the set maximum input voltage, the set minimum output voltage is less than or equal to the output voltage and less than or equal to the set maximum output voltage, the temperature is less than or equal to a set temperature threshold value, and the internal fan is free from faults and unknown errors.
7. A firmware upgrade system of a server redundant power supply system is characterized in that the number of the server redundant power supplies is N, N is a natural number, and N is more than or equal to 2, and the system comprises:
the system comprises a to-be-upgraded server redundant power supply determining module, a to-be-upgraded server redundant power supply determining module and a power supply determining module, wherein the to-be-upgraded server redundant power supply determining module is used for selecting one server redundant power supply of the current to-be-upgraded system firmware and defining the server redundant power supply as the to-be-upgraded server redundant power supply;
the first judging module is used for judging whether at least one server redundant power supply in N-1 server redundant power supplies except the server redundant power supply to be upgraded is qualified in performance parameters;
the second judging module is used for judging whether the server redundant power supply to be upgraded is a main device in a server power supply main-standby mode or not when the performance parameters of at least one server redundant power supply are qualified;
the mode switching module is used for switching the redundant power supply of the server to be upgraded into the standby equipment in the server power supply main standby mode or the server power supply in the load sharing mode when the redundant power supply of the server to be upgraded is the main equipment in the server power supply main standby mode;
the firmware upgrading module is used for upgrading the system firmware of the redundant power supply of the server to be upgraded;
and the circulating module is used for starting the server redundant power supply determining module to be upgraded in the N-1 server redundant power supplies, reselecting the server redundant power supply of the next system firmware to be upgraded, calling the first judging module, the second judging module, the mode switching module and the firmware upgrading module, and upgrading the system firmware of the server redundant power supply of the next system firmware to be upgraded until the system firmware of the N server redundant power supplies is upgraded.
8. The firmware upgrade system of a server redundant power supply system of claim 7, further comprising:
and the recording module is used for recording the number of times of system firmware upgrade failure once when the performance parameters of the N-1 server redundant power supplies are all disqualified.
9. The firmware upgrade system of a server redundant power supply system of claim 7, further comprising:
and the starting module is used for starting the firmware upgrade of the redundant power supply system of the server by a Web page mode or a Command mode.
10. A server redundant power supply system firmware upgrade system according to any of claims 7-9, further comprising:
and the storage module is used for storing a power supply image, and the power supply image is used for upgrading system firmware.
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| CN109189430A (en) * | 2018-09-14 | 2019-01-11 | 郑州云海信息技术有限公司 | A kind of power supply firmware upgrade method, device, equipment and storage medium |
| CN111273927A (en) * | 2020-01-19 | 2020-06-12 | 苏州浪潮智能科技有限公司 | Method and system for on-line upgrading of server power firmware |
| CN111510323A (en) * | 2020-03-24 | 2020-08-07 | 中国科学院上海微系统与信息技术研究所 | Firmware upgrading method, device and system for Internet of things equipment and storage medium |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109189430A (en) * | 2018-09-14 | 2019-01-11 | 郑州云海信息技术有限公司 | A kind of power supply firmware upgrade method, device, equipment and storage medium |
| CN111273927A (en) * | 2020-01-19 | 2020-06-12 | 苏州浪潮智能科技有限公司 | Method and system for on-line upgrading of server power firmware |
| CN111510323A (en) * | 2020-03-24 | 2020-08-07 | 中国科学院上海微系统与信息技术研究所 | Firmware upgrading method, device and system for Internet of things equipment and storage medium |
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