公开(公告)号：US20150339236A1

公开(公告)日：2015-11-26

申请号：US14818578

申请日：2015-08-05

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Lawrence C. BLOUNT ,  Itzhack GOLDBERG ,  Neil SONDHII

IPC: G06F12/08 ,  G06F11/07 ,  G06F3/06

CPC classification number: G06F11/327 ,  G06F3/0619 ,  G06F3/0625 ,  G06F3/065 ,  G06F3/0653 ,  G06F3/0679 ,  G06F3/0685 ,  G06F3/0689 ,  G06F11/0727 ,  G06F11/0787 ,  G06F11/079 ,  G06F11/1441 ,  G06F11/2015 ,  G06F11/2069 ,  G06F11/2289 ,  G06F11/3034 ,  G06F11/3037 ,  G06F11/3062 ,  G06F12/0802 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/16 ,  G06F2201/86 ,  G06F2212/1032 ,  G06F2212/2022 ,  G06F2212/214 ,  G06F2212/221 ,  Y02D10/13

Abstract: A method includes receiving a signal indicating a loss of power, starting a timer, the timer configured to expire after a specific time period, copying, by a distributed storage system having volatile memory configured as a write cache, write cache data from the volatile memory to a solid state device, upon receiving the signal indicating the loss of power to the storage system, configuring, the solid state device as both a read cache and the write cache, performing a health test on the storage system upon receiving the signal indicating the loss of power, determining the loss of power as a false alarm if the timer expires and the storage system passes a health test on the storage system, and upon the timer expiring and the storage system passing the health test, copying the write cache data from the solid state device back to the volatile memory.

Abstract translation: 一种方法包括接收指示功率损失的信号，启动定时器，被配置为在特定时间段之后到期的定时器，由具有被配置为写入高速缓存的易失性存储器的分布式存储系统复制，从易失性存储器写入高速缓存数据 到固态设备，当接收到指示存储系统的功率损失的信号时，将固态设备配置为读取高速缓存和写入高速缓存，在接收到指示所述存储系统的信号时，对存储系统执行健康测试 如果定时器到期并且存储系统通过存储系统的健康测试，确定电力损失为虚假警报，并且定时器到期并且存储系统通过健康测试，则将写入高速缓存数据从 固态设备回到易失性存储器。