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Host-based transfer of input-output operations from kernel space block device to user space block device

專利號
US11175840B2
公開日期
2021-11-16
申請人
EMC IP Holding Company LLC（US MA Hopkinton）
發(fā)明人
Sanjib Mallick; Md Haris Iqbal; Kundan Kumar
IPC分類
G06F9/54; G06F3/06; G06F9/50
技術領域
io,storage,mpio,submission,kernel,balancing,space,host,array,in
地域： MA MA Hopkinton

摘要

An apparatus in one embodiment comprises a host device comprising a processor coupled to memory. The host device is configured to communicate over a network with at least one storage system. The host device is further configured to generate a user space block device and to generate a kernel space block device corresponding to the user space block device. The host device is further configured to receive an input-output operation at the kernel space block device from an application executing on the host device and to transfer the input-output operation from the kernel space block device to the corresponding user space block device. The host device is further configured to submit the input-output operation to the at least one storage system based at least in part on the user space block device.

說明書

For example, as seen on the right side of FIG. 2, a user space-based application 214 residing in the user space 210 interfaces with IO load balancing and submission functionality 216 residing in the user space. The IO load balancing and submission functionality 216 is configured to submit IO operations to the storage array via HBA 232 using user space-based function calls and libraries and user space block devices 218. In this case, IO load balancing and submission functionality 216 does not utilize the functionality found in the kernel space 220 for submitting the IO operations to the logical volume 240 of the storage array 105 via the HBA 232.

權利要求

1
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