Invention Grant
- Patent Title: Performing discard commands on RAID storage devices
- Patent Title (中): 在RAID存储设备上执行丢弃命令
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Application No.: US14679376Application Date: 2015-04-06
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Publication No.: US09588693B2Publication Date: 2017-03-07
- Inventor: Mikulá{hacek over (s)} Pato{hacek over (c)}ka , Michael A. Snitzer
- Applicant: Red Hat, Inc.
- Applicant Address: US NC Raleigh
- Assignee: Red Hat, Inc.
- Current Assignee: Red Hat, Inc.
- Current Assignee Address: US NC Raleigh
- Agency: Lowenstein Sandler LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F3/06 ; G06F12/02

Abstract:
An example method for performing discard commands on Redundant Array of Independent Disks (RAID) devices may comprise receiving a request to free a range of logical sectors that is mapped to a plurality of storage devices organized as RAID. The method may further comprise identifying a first physical sector number corresponding to a first logical sector having a lowest number greater or equal than a starting logical sector number of the range of logical sectors. The method may further comprise identifying a second physical sector number corresponding to a second logical sector having a lowest number greater or equal than an ending logical sector number of the range of logical sectors. The method may further comprise issuing a single command to all of the plurality of storage devices to free a range of sectors identified by the first physical sector number and the second physical sector number.
Public/Granted literature
- US20150227317A1 PERFORMING DISCARD COMMANDS ON RAID STORAGE DEVICES Public/Granted day:2015-08-13
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