Writing metadata files on a disk
First Claim
Patent Images
1. A disk drive, comprising:
- a rotatable disk;
a head actuated over the disk; and
a controller configured to write data on the disk using the head, to store logical-to-physical mapping information in a circular buffer, and to write a plurality of metadata files on the disk using the head, wherein the plurality of metadata files are interspersed with the data on the disk and each of the metadata files includes the entire contents of the circular buffer at a time the metadata file is written on the disk,wherein the plurality of metadata files includes a first metadata file and a second metadata file with the second metadata file following the first metadata file on the disk, and wherein the second metadata file includes a duplicate copy of logical-to-physical mapping information included in the first metadata file and logical-to-physical mapping information for data on the disk between the first and second metadata files.
8 Assignments
0 Petitions
Accused Products
Abstract
A disk drive comprising a rotatable disk, a head actuated over the disk, and a controller is disclosed. The controller is configured to write data on the disk using the head, to store logical-to-physical mapping information for data already written on the disk in a circular buffer as the data is written on the disk, and to write a plurality of metadata files on the disk using the head, wherein the plurality of metadata files are interspersed with the data on the disk and each of the metadata files includes contents of the circular buffer at a time the metadata file is written on the disk.
550 Citations
27 Claims
-
1. A disk drive, comprising:
-
a rotatable disk; a head actuated over the disk; and a controller configured to write data on the disk using the head, to store logical-to-physical mapping information in a circular buffer, and to write a plurality of metadata files on the disk using the head, wherein the plurality of metadata files are interspersed with the data on the disk and each of the metadata files includes the entire contents of the circular buffer at a time the metadata file is written on the disk, wherein the plurality of metadata files includes a first metadata file and a second metadata file with the second metadata file following the first metadata file on the disk, and wherein the second metadata file includes a duplicate copy of logical-to-physical mapping information included in the first metadata file and logical-to-physical mapping information for data on the disk between the first and second metadata files. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of writing logical-to-physical mapping information on a disk, comprising:
-
writing data on the disk; storing logical-to-physical mapping information in a circular buffer; and writing a plurality of metadata files on the disk, wherein the plurality of metadata files are interspersed with the data on the disk and each of the metadata files includes the entire contents of the circular buffer at a time the metadata file is written on the disk, wherein the plurality of metadata files includes a first metadata file and a second metadata file with the second metadata file following the first metadata file on the disk, and wherein the second metadata file includes a duplicate copy of logical-to-physical mapping information included in the first metadata file and logical-to-physical mapping information for data on the disk between the first and second metadata files. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification