File system having variable logical storage block size
View Patent ↗A system is set forth that includes a processor, a data storage device that accessible by the processor, and filesystem software that executable by the processor to organize files on the data storage device. The filesystem software is executable to organize files on the data storage device in storage areas having different logical storage block sizes that are dependent on file type. In one implementation, the filesystem software is executable to generate a hole map associated with the data storage device. The hole map comprises data indicative of a logical storage block size for each of a plurality of storage areas of the data storage device and, optionally, data indicative of a degree of usage for each of the plurality of storage areas. The filesystem may identify the file type using a filename of the file and/or embedded file information.
1. A system comprising:
a processor;
a data storage device having memory accessible by the processor;
filesystem code executable by the processor to manage files of different file types on the data storage device using different storage area types, where the different storage area types define different logical storage block sizes used by the filesystem to logically divide the memory of the data storage device, where the filesystem code identifies the file type of each file managed by the filesystem code and executes memory transactions for each managed file using the storage area type assigned to the file type.
2. The system of claim 1 , where the different media file types comprise video data files, audio data files, and executable files.
3. The system of claim 2 , where the filesystem code is executable to organize video data files in larger logical storage block sizes than audio data files.
4. The system of claim 3 , where the filesystem code is executable to organize audio data files in larger logical storage block sizes than executable files.
5. The system of claim 1 , where the filesystem code is executable to generate a hole map associated with the data storage device, and where the hole map comprises data indicative of a logical storage block size for each of a plurality of storage areas of the data storage device.
6. The system of claim 5 , where the filesystem code is executable to generate the hole map proximate a beginning portion of a volume on the data storage device.
7. The system of claim 5 , where the filesystem code is executable to store data indicative of a degree of usage of mapped storage areas of the storage device in the hole map.
8. The system of claim 1 , where the filesystem code is executable to identify the file type of a file using a filename of the file.
9. The system of claim 1 , where the filesystem code is executable to identify the file type of a file using embedded file information.
10. The system of claim 1 , where the filesystem code is executable to store file data in an area of a lesser logical storage block size when an area of a logical storage block size corresponding to the file type is unavailable.
11. The system of claim 1 , where the filesystem code is executable to store file data in a degraded area of the memory storage when an area of a logical storage block size corresponding to the file type is unavailable.
12. A system comprising:
a processor;
a data storage device having memory storage accessible by the processor;
filesystem code executable by the processor to manage files on the data storage device, where the filesystem code is executable to manage files on the data storage device using storage areas of a first type having a first logical storage block size and storage areas of a second type having a second logical storage block size that differs in size from the first logical storage block size, where the first and second logical storage block sizes are used by the filesystem code to logically divide the memory of the storage device, and where the filesystem code is further executable to store file data of a file of a first file type in storage areas of the first type and file data of a file of a second file type in storage areas of the second type, and where the filesystem code is executable to identify whether each file managed by the file system code is of the first or second file type.
13. The system of claim 12 , where the first file type comprises video data files and the second file type comprises audio data files.
14. The system of claim 13 , where the first logical storage block size is larger than the second logical storage block size.
15. The system of claim 12 , where the filesystem code is executable to generate a hole map corresponding to storage areas of the data storage device, where the hole map comprises data indicative of whether a storage area is of the first or second type.
16. The system of claim 15 , where the hole map generated through execution of the filesystem code is stored proximate a beginning of a volume on the data storage device.
17. The system of claim 15 , where the hole map comprises data indicative of a degree of usage of the storage areas of the storage device that are mapped in the hole map.
18. The system of claim 12 , where the filesystem code is executable to identify the file type of a file using a filename of the file.
19. The system of claim 12 , where the filesystem code is executable to identify the file type of a file using embedded file information.