Method and system for file name based command execution in a storage system
In one embodiment, a method implementing file name based command execution is disclosed. The method includes periodically examining a predetermined file directory in a storage system to determine if the predetermined file directory contains any file. The method includes, upon finding a first file, determining that a file name of the first file includes one or more commands of a plurality of preconfigured commands executable in the storage system. The method includes executing the one or more commands included in the file name of the first file to perform one or more actions associated with the one or more commands. The method further includes creating a second file in the predetermined file directory, indicating that the included one or more commands are being executed. The method further includes that, upon that the one or more included commands finish execution, removing the first and second file from the predetermined file directory.
1. A computer-implemented method, comprising:
periodically examining a predetermined file directory in a storage system to determine if the predetermined file directory contains any file, the predetermined file directory being accessible by users with a predetermined privilege only;
upon finding a zero-byte first file, determining that a file name of the zero-byte first file includes one or more commands of a plurality of preconfigured file name based commands executable in the storage system, the commands having been embedded in the file name of the first file as stored in the storage system, wherein the file name of the first file has further embedded therein all of one or more parameters to be utilized to execute the embedded one or more commands;
executing the one or more commands included in the file name of the first file to perform one or more actions associated with the one or more commands;
creating a zero-byte second file in the predetermined file directory, indicating that the included one or more commands are being executed; and
upon that the included one or more commands finish execution, removing the first file and second file from the predetermined file directory, wherein removal of both the first file and the second file indicates that the included one or more commands have been executed, such that subsequent examination of the predetermined file directory would not find the first file again to prevent the same commands from being executed again.
2. The method of claim 1 , further comprising:
receiving a request from a user to create the first file in the predetermined file directory;
determining an access privilege of the user; and
responsive to the determining that the access privilege of the user allows the user to create the first file in the predetermined file directory, creating the first file in the predetermined file directory.
3. The method of claim 1 , wherein executing the one or more commands included in the file name of the first file comprises:
parsing the file name of the first file;
extracting the one or more commands from the file name;
looking up a data structure to interpret the extracted one or more commands;
performing the one or more actions associated with the one or more commands based on the data structure.
4. The method of claim 1 , wherein a result of executing the file name based command included in the file name of the first file is stored in a log file for debugging.
5. The method of claim 1 , wherein the plurality of preconfigured file name based commands include commands manipulating a hierarchical data structure storing namespace of a file system of the storage system.
6. The method of claim 5 , wherein the file system is available for accessing by clients of the storage system while the plurality of preconfigured file name based commands are being executed.
7. The method of claim 1 , wherein the storage system is a deduplicating storage system.
8. A storage system, comprising:
a processor and a non-transitory machine-readable storage medium coupled to the processor, the non-transitory machine-readable storage medium containing instructions executable by the processor, wherein the storage system is operative to:
periodically examine a predetermined file directory in a storage system to determine if the predetermined file directory contains any file, the predetermined file directory being accessible by users with a predetermined privilege only,
upon finding a zero-byte first file, determining that a file name of the zero-byte first file includes one or more commands of a plurality of preconfigured file name based commands executable in the storage system, the commands having been embedded in the file name of the first file as stored in the storage system, wherein the file name of the first file has further embedded therein all of one or more parameters to be utilized to execute the embedded one or more commands,
execute the one or more commands included in the file name of the first file to perform one or more actions associated with the one or more commands,
create a zero-byte second file in the predetermined file directory, indicating that the included one or more commands are being executed, and
upon that the included one or more commands finish execution, remove the first and second file from the predetermined file directory, wherein removal of both the first file and the second file indicates that the included one or more commands have been executed, such that subsequent examination of the predetermined file directory would not find the first file again to prevent the same commands from being executed again.
9. The storage system of claim 8 , wherein the storage system is further operative to:
receive a request from a user to create the first file in the predetermined file directory,
determine an access privilege of the user, and
responsive to the determining that the access privilege of the user allows the user to create the first file in the predetermined file directory, create the first file in the predetermined file directory.
10. The storage system of claim 8 , wherein execution of the one or more commands included in the file name of the file is to:
parse the file name of the first file,
extract the one or more commands from the file name,
look up a data structure to interpret the extracted one or more commands, and
perform the one or more actions associated with the one or more commands based on the data structure.
11. The storage system of claim 8 , wherein the plurality of preconfigured file name based commands include commands manipulating a hierarchical data structure storing namespace of a file system of the storage system.
12. The storage system of claim 8 , wherein the file name of the first file is identical to a file name of the second file, except extensions of the first file and the second file.
13. A non-transitory computer-readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:
periodically examining a predetermined file directory in a storage system to determine if the predetermined file directory contains any file, the predetermined file directory being accessible by users with a predetermined privilege only;
upon finding a zero-byte first file, determining that a file name of the zero-byte first file includes one or more commands of a plurality of preconfigured file name based commands executable in the storage system, the commands having been embedded in the file name of the first file as stored in the storage system, wherein the file name of the first file has further embedded therein all of one or more parameters to be utilized to execute the embedded one or more commands;
executing the one or more commands included in the file name of the first file to perform one or more actions associated with the one or more commands;
creating a zero-byte second file in the predetermined file directory, indicating that the included one or more commands are being executed; and
upon that the included one or more commands finish execution, removing the first and second file from the predetermined file directory, wherein removal of both the first file and the second file indicates that the included one or more commands have been executed, such that subsequent examination of the predetermined file directory would not find the first file again to prevent the same commands from being executed again.
14. The non-transitory computer-readable storage medium of claim 13 , wherein executing the one or more commands included in the file name of the first file comprises:
parsing the file name of the first file;
extracting the one or more commands from the file name;
looking up a data structure to interpret the extracted one or more commands;
performing the one or more actions associated with the one or more commands based on the data structure.
15. The non-transitory computer-readable storage medium of claim 13 , wherein a result of executing the file name based command included in the file name of the first file is stored in a log file for debugging.
16. The non-transitory computer-readable storage medium of claim 13 , wherein the plurality of preconfigured file name based commands include commands manipulating a hierarchical data structure storing namespace of a file system of the storage system.