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Linux LVM creation and expansion and reduction

"/DEV/SDC" is a new physical volume of "50.00 GiB ---NEW physical volume---NBSP;PV name /DEV/SDC NBSP;VG name NBsp NBSP;PV Size 50.00 GiB allocatable NB Sp NO pe Size 0 total PE nbs P 0 free PE 0 allocate D PE 0 NBSP;PV UUID AKREKZ-L5RT-UDZR-4 Iy6-z2bh-vwi0-qexqza "/DEV/SDD" is a new physical volume of "50.00 GiB" ---new physical volume---NB Sp PV n

CPU HotPlug notifier

If your code needs to detect whether the current CPU is hotplug, you can refer to the following sample code #include static int foobar_cpu_callback (struct notifier_block *NFB, unsigned long action, void *HCPU) { unsigned int cpu = (unsigned long) hcpu; Switch (action) { Case Cpu_online: Case Cpu_online_frozen: Foobar_online_action (CPU); Break Case Cpu_dead: Case Cpu_dead_frozen: Foobar_dead_action (CPU); Break } return NOTIFY_OK; } static struct Notifier_block Foobar_cpu_notifier = { .

C # Multi-core becomes parallel computing with multi-core advantage

. InnerExceptions Internal Exception CollectionParallelOptionsMaxdegreeoofparallelism degree of parallelismCancellationToken Cancel TokenTaskScheduler Task SchedulerChapter III Command-parallel task parallelismSystem.Threading.Tasks.TaskA task represents an asynchronous operation and does not target a threadStateTaskstatus.created Initial State. Waitingforactivation the initial state of tasks that depend on other tasks. Waitingtorun the initial state of a task created by taskfactory.startnew. Ca

C # ADOMD Connection analysis Service View Cube

(olapdb = = "" | | OLAPDatabase.Name.ToString () = olapdb) { NBSP ; Console.WriteLine ("DatabaseName:" + olapdatabase.name); NB Sp //cube NBS P foreach (Cube olapcubex in Olapdatabase.cubes) { if (Olapcube = = "" | | Olapcubex.name = = olapcube) { NB Sp NBSp Console.WriteLine ("CubeName:" + olapcubex.name);

Through the great God, the dream of his own

life can be divided into ranked, want to highlight themselves in the crowd, strong to the world have you to dominate. that is hardships, late blooming.This link is the primitive you want. http://www.runoob.com/Words that speak for the heart say: nbsp , NB Sp                          Time is walking, age is long, know more, see through more, more and less happy. Have to admit that time has changed a lot, a lot. I am

Median of Sorted Arrays

There is sorted arrays A and B of size m and N respectively. Find The median of the sorted arrays. The overall run time complexity should be O (log (m+n)).DoubleFindmedian (intA[],intB[],intLintRintNA,intNB) { if(L >R)returnFindmedian (B, A, Max (0, (NA+NB)/2-na), Min (NB, (NA+NB)/2), NB, NA); inti = (l+r)/2; intj =

Officially switched to netbeans [00 original]

I have been using eclipse and still paying attention to netbeans. From the release and trial of each milestone version of NB6 to the current netbeans6 beta2, we found that Nb has been making many changes. Next, let's take a look at my current trial experience and compare eclipse (3.3.1) and Nb (6 beta2) 1. startup speedMy host has 1 GB of memory. I used to activate Nb

Introduction to algorithms 9.3-8 calculate the median of two Arrays

is considered that this number is not the lower median: A. At least m is larger than x B. At least m + 1 is smaller than X. So that Na is the number of elements in array A, Nb is the number of elements in array B, Ma is the lower median in array A, and MB is the lower median in array B, A = Na/2, B = Nb/2. They meet the following requirements: (1) Na and NB are

The principle of Peer-to-peer TCP penetrating NAT

TCP connection is initialized in two parts A and B, the NAT device will assume that they trust each other and allow the connection between them.Figure 1 is an example of the goal of allowing A and B (respectively, after Nata and NATB) to establish a TCP connection.We discussed a variety of TCP connectivity scenarios in a particular NAT device environment.If our situation is as follows:1, can predict NA port, can predict NB port, can specify the speci

. NET Learning 2nd Season 10 Simple factory design mode

= Console.ReadLine (); Switch (type) { Case "A": Notebooka nb = new Notebooka (); Break case "B": notebookb nb = new NOTEBOOKB (); break; case "C": NOTEBOOKC nb = new NOTEBOOKC (); break; Case "D": NOTEBOOKD NB = new Notebookd (); Break }}

Data structure linked list operation set (build, Traverse, insert, delete, sort, length, empty judgment, etc.)

#include #include #include typedef struct NODE{int data;//data fieldstruct Node * pnext;//pointer field}node, * pnode; node is equivalent to struct node, pnode equivalent to struct node *function declarationvoid Create_list (Pnode phead);//create a dynamic linked listvoid Traverse_list (Pnode phead);//Output listBOOL Is_empty (Pnode phead);//Judging the list is not emptyvoid Length_list (Pnode phead);//Find chain table lengthvoid Insert_list (Pnode phead);//Insert Nodevoid Delete_list (Pnode phe

Full introduction to custom paging tags in struts2 (2)

In the previous section, we have written a custom page tag and referenced it in JSP: PM is actually a paging model, which includes the current page number (pageno), the number of records to be displayed per page (pagesize), and the total number of records (recordcount) and data that meets the paging conditions ). The paging model is as follows: Pagemodel. Java /*** Classname: pagemodel. java * created on 2011 * copyrights 2011 hi.csdn.net/tjcyjd All Rights Reserved. * site: http://hi.csdn.net

<02> keyword + identifier + constant representation + variable + scope

Specification for identifier namingSpecification content: 1) make a meaningful name 2) follow the camel's name method in generalThe core idea:1, if an identifier has more than one word composition1) First letter in lowercase, and first letter of other words in uppercase2) or the first letter of all the words are capitalized------------------------------------------------Overview and classification of constantsConstants in the computer: represents fixed data, represented by representedCategories

The principle and implementation of the notification chain mechanism of Linux kernel

) { if (N->priority > (*NL)->priority) Break NL = ((*NL)->next); } N->next = *NL; Rcu_assign_pointer (*NL, n); return 0; } The logout callback function uses the Notifier_chain_unregister function to remove the callback function from the notification chain: Staticint notifier_chain_unregister (struct notifier_block **nl,struct notifier_block *n) { while ((*NL)! = NULL) { if ((*nl) = = N) { Rcu_assign_pointer (*NL, n->next); re

Some suggestions for SQL script writing

Label:1, index is critical, create a reasonable index, improve query speed; DBCC freeporccache dbccdropcleanbuffers nbsp; SET statinstic IO on SET statinstic IO off 1> query, where The statement also involves whether the query uses an index lookup or an index scan; 2> uses the SQL real-time query tool to analyze query performance, using an index performance higher than scanning the disk; 3>where Try not to use a calculated expression such as year () in the statement, resulting in

Namespaces can also be customized

Definition of namespacesnamespaces, in addition to the system-defined namespaces, can be defined by themselves, defining namespaces with the keyword "namespace", using the namespace with the symbol "::" specified.A variable or function that does not specify a namespace is a variable or function under the current namespace.If you do not define a namespace, all of them belong to the global namespace.The same namespace can be defined multiple times.namespace definitions and usage examples:#include

Apache flink-streaming (DataStream API)

program reads input from the source. The source can be attached to the program via Streamexecutionenvironment.addsource (sourcefunction). There are some pre-defined streaming data sources that are accessible in streamexecutionenvironment: , NB Sp ReadTextFile (path) Step-by-line reading text files as strings nbsp , NB Sp ,

Official switch to netbeans[00 original]

has been using eclipse and has been focusing on NetBeans. From the NB6 milestone release trial to today's NETBEANS6 Beta2 found that NB has been making a lot of changes. Now for my current trial experience, compare Eclipse (3.3.1) and NB (6 Beta2) 1. Start speed My machine is 1G of memory, formerly open a NB, basic 1 minutes or so. Open a

Principles of P2P TCP Nat penetration (zz)

and Part B initialize the TCP connection, the NAT device will think that they are mutually trusted and allow the connection between them.Figure 1 is an example. The goal is to establish a TCP connection between A and B (after Nata and natb respectively.We have discussed a variety of TCP connection solutions in a specific NAT device environment.If our situation is as follows:1. Predictable na port, predictable Nb port, and specific route of the source

Installing GLIBC is a hassle and check for version issues

whether GCC accepts-g ... yesChecking for GCC option to accept ANSI C ... none neededChecking how to run the C preprocessor ... gcc-e Checking for g++ ... no NBSP ; , NB Sp , NB Sp NBSP;NBS P; Checking for C + + ... no NBSP ; , NB Sp ,

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