lsi drivers

equal sign, that is, the left side of the equal sign is equivalent to the right side of the equal sign. In other words, we only changed the original expression A without losing any information. It's like 24 = 2*3*4. Therefore, if LSI directly uses SVD, not only R is uncontrollable, but R is likely to be too large to achieve dimensionality reduction, in fact, this operation not only does not reduce the dimension, but also consumes a lot of computing t

1. Install all SAS hard drive, boot up 2, the post process appears Ctrl + C prompts, press CTRL + C into LSI Logic Config Utility ... Start SAS configuration 3, select the "SAS 1068" channel, press. 4, RAID select "Raid Properties", press RAID Properties: Creating, managing arraysSAS topology: View Physical disk and RAID configuration informationAdvanced Adapter Properties: View advanced attributes and their restore Defaults (this action do

VMware, on the official blog today, said the use of PVSCSI storage adapter driver can improve 10-30% performance for high IO VMs. See Http://blogs.vmware.com/performance/2010/02/highperformance-pvsci-storage-adapter-can-reduce-cpio-by-1030.html We know that the default type of SCSI controller when creating VMS is the LSI Logic. Now under vsphere 4, you can select a new type PVSCSI (the option is VMware paravirtual), and this type can significantly

The company has several servers installed on esxi5.0 virtual machines. They used to use common desktops, now we have purchased a dedicated server and installed the LSI 8708 sas raid card (the server's onboard RAID card esxi is not supported). Now we need to migrate the virtual machine. The best method would have been to mount the array. Now the virtual machine is moved to the array and then to the new server. However, the company's array is full and t

When a new technology or product emerges, everyone is eager to know whether or when the new product will completely replace the original product. In fact, many products have a "long tail effect". For example, when a disk backup occurs, people think that the tape will soon exit the market, but today the tape is still the main force of backup and archiving; after the emergence of SSD, many people think that it will eventually replace the mechanical hard disk, but at least from now on, it is not ea

About the LSI 2208 array card is not enabled by default JOBD mode, how to configure as JBOD mode1, the server boot press ctrl+y into the BIOS preboot CLI interface2. Enter the command:$ Adpgetprop Enablejbod-aall (can be viewed to JBOD is disabled)Adapter 0:jbod:disabledExit Code = 0x0Enable JBOD$ adpsetprop enablejbod 1-aall (enable array card JBOD mode)Adapter 0:set JBOD to Enable success.Exit Code = 0x03, restart the server and press Ctrl+h to ente

With the development of LSI, the computer entered the fourth generation development. The fourth generation computer takes the large scale integrated circuit as the logic element and the memory, causes the computer to the miniaturization and the massive two direction development. From the first generation to the fourth generation, the architecture of the computer is the same, which is composed of controller, memory, arithmetic and input, called von Neu

Root tree enumeration and Its Application in LSI analysis and identification and Program Arrangement simplification (Enumeration problemsCompleted by a student as a graduation thesis. I wrote the Application Section) Root tree Enumeration Requirement: write a program that includes {n} and {Non-standard root tree} A 1-1 correspondence is established between all elements. The following table lists natural numbers.N = 1... 18Correspond

the server with Ubuntu system is turned on, but to see the status of the server RAID10, the LSI megacli Disk array management tool can be viewed by the following steps:1. Add Update sourcesudo vim/etc/apt/sources.list//add at the end Deb Http://hwraid.le-vert.net/ubuntu Precise Main sudo apt-get update//updating sourceNote: Some warnings can be ignored, but if you are prompted with a GPG error, you need to add a certificate

1. If you have multiple raid on a LSI array card, you may report hard disk error (CentOS 6.6) If you need to install the system on the first raid, or you can create a raid on the system first. 2. Hot Plug the consequences: If the hard drive does not fail, RAID is normal, in the system running state to hot plug hard drive, will cause raid different steps, the entire RAID may appear various strange problems, For example: 1. HDD display off-line, red a

This article is done original, reproduced please specify the source, respect for the original.Writing this article, I refer to some blogs on the Internet:Http://bbs.chinaunix.net/thread-3634524-1-1.htmlHttp://www.bkjia.com/gjrj/800182.htmlAlso refer to the "Linux driver development in detail" 3.4 chapters, to achieve the establishment of their own drive directory.The driving example in this article is: Linux device Driver Development detailed second edition of global Mem Tow, Song Baohua Editor'

Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop. Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop. Make [1]: *** [Drivers/Char] Error 2 Make: *** [

Control program.In addition, routing and address resolution are handled by the kernel. Loadable Modules The features provided by the Linux kernel can be extended at run time, that is, when the system is up and running, we can add or remove functionality from the kernel to the kernel.Code that can be added to the kernel at run time is called a "module."The Linux kernel supports several types of modules, including but not limited to device drivers.Each module consists of target code

How to use the device tree of linux drivers and how to use the device tree of linux drivers The Device Tree describes the hardware from the software perspective, and DTS is the Device Tree source file. DTC is responsible for converting DTS to DTB, and DTB is the binary form of DTS for machine use. The Device Tree is a tree structure. Each child node except the root node has a unique parent node, which can h

This is a 2014kdd, geographic location service paper. Contents: 1) First, the author raised a valuable Question: recommend taxi drivers with routes that can be carried to the guests at the minimum cost. 2) Secondly, the novelty of the problem is that in the past, there were scattered recommendation points. This paper is a recommendation route. It can be said that the location service provided goes further. 3) then, two sub-problems are pointed out: a)

The stream device driver is actually the driver for exporting standard stream interface functions. This is the definition above. In wince, all stream devices export stream device interfaces, so that Device Manager in wince can load and manage these stream device drivers. Architecture of stream device driver First, I declare that I copied this image. When wincestarts, oal(oal.exe) First loads the kernel. DLL, and then kernel. DLL load device. DLL, devi

device in the private_data member that represents the opened file pointer filp for other operation functions. Release Operation: int yjpLED_release(struct inode *inode, struct file *filp){filp->private_data = NULL;return 0;} Release the content allocated by open in filp-> private_data. Write operation: ssize_t yjpLED_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos){ssize_t retval;struct yjpLED *dev;dev = filp->private_data;if(down_interruptible(dev->sem))return -ERE

Poll for linux drivers and poll for linux driversPOLL operations 1. POLL execution process: Poll is a system call. Its kernel entry function is sys_poll. sys_poll calls do_sys_poll directly without any processing. The execution process of do_sys_poll can be divided into three parts: 1. Copy the input pollfd array to the kernel space. Because the copy operation is related to the array length, this is an O (n) operation, in do_sys_poll, the code in this

This document describes how to use ctl_code to communicate with a Windows NT driver. generally, user-Mode Applications can communicate with kernel-mode drivers by calling createfile and deviceiocontrol, if a driver in the kernel state wants to perform similar operations with another driver, how can this problem be achieved? Next, we will provide a detailed description. The main idea is to first get the handle of another driver, then construct an IRP,

If you are interested in Linux user-state driver development, please read this article, otherwise please drift over.user-space Device Drivers in linux:a First Look | initial knowledge of Linux User state device driversuser-space Device Drivers in linux:a first look Mats liljegrensenior software ArchitectDevice drivers in Linux is traditionally run in kernel spac