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  • export block device over network without root

    - by dschatz
    I'm trying to export a file as a block device over the network. I do not have root access on the machine where the file exists. I do have root access on the machine(s) where I will mount the block device. I've seen ATA-Over-Ethernet and ISCSI but there don't seem to be any implementations which allow me to export the block without root at least (some even require kernel modules). Is there an implementation of either of these or some other protocol that doesn't require root? Perhaps I can tunnel ethernet over IP to do this?

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  • Block With Given ID Does Not Exist - Minecraft Mod

    - by inixsoftware
    I have tried to make my own Minecraft Block using Forge, but for some reason, when I use /give Playerxxx 1000 1 the game says, There is no block with id '1000' My Block Code: package net.minecraft.blockr; import net.minecraft.block.Block; import net.minecraft.block.material.Material; import net.minecraft.creativetab.CreativeTabs; public class Basalt extends Block { public Basalt(int par1, Material par2Material) { super(par1, par2Material); this.setCreativeTab(CreativeTabs.tabBlock); } } Mod code: package net.minecraft.blockr; import cpw.mods.fml.common.Mod; import cpw.mods.fml.common.Mod.Init; import cpw.mods.fml.common.network.NetworkMod; import cpw.mods.fml.common.registry.GameRegistry; import cpw.mods.fml.common.registry.LanguageRegistry; import net.minecraft.block.Block; import net.minecraft.block.material.Material; @Mod(modid="blockr", name="Blockr Mod", version="PreAlpha v0.0.1") @NetworkMod(clientSideRequired=true, serverSideRequired=false) public class BlockrMod { public static Block basalt; @Init public void load() { basalt = new Basalt(1000, Material.ground).setUnlocalizedName("basalt"); GameRegistry.registerBlock(basalt, basalt.getUnlocalizedName()); LanguageRegistry.addName(basalt, "Basalt Block"); } public String getVersion() { return "0.0.1"; } } What exactly is going wrong? My package is blockr (as my mod is called blockr) I know my mod was loaded as I see in Forge under Mods I see my mod

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  • How to block a sub-site in windows?

    - by Creedy
    How can i block a sub-site of a website as e.g. http://example.com/someSite unfortunately the hosts file is not an option since you can only block whole domains there and any "/" just destroys these rules. this is just for my personal protection against visiting some sites too often, while i still have to be able to get to the other sites of that domain (as e.g. example.com/someOtherSite) would be great if someone knows a solution regarding this topic

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  • How to block a sub-domain in windows?

    - by Creedy
    How can i block a sub-site of a website as e.g. http://example.com/someSite unfortunately the hosts file is not an option since you can only block whole domains there and any "/" just destroys these rules. this is just for my personal protection against visiting some sites too often, while i still have to be able to get to the other sites of that domain (as e.g. example.com/someOtherSite) would be great if someone knows a solution regarding this topic

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  • TCP Windows Size vs Socket Buffer Size on Windows

    - by Patrick L
    I am new to Windows networking. When people talk about TCP tuning on Windows platform, they always mention about TCP Window Size. I am wondering whether Windows uses the concept of "Socket Buffer Size"? On Windows XP, the TCP window size is fixed. We can set it using the TCPWindowSize registry value. How about Socket Buffer Size? How can we set Socket Buffer size on Windows? Can we set it to a value different from TCP window size?

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  • Ruby - Possible to pass a block as a param as an actual block to another function?

    - by Markus O'Reilly
    This is what I'm trying to do: def call_block(in_class = "String", &block) instance = eval("#{in_class}.new") puts "instance class: #{instance.class}" instance.instance_eval{ block.call } end # --- TEST EXAMPLE --- # This outputs "class: String" every time "sdlkfj".instance_eval { puts "class: #{self.class}" } # This will only output "class: Object" every time # I'm trying to get this to output "class: String" though call_block("String") { puts "class: #{self.class}" } On the line where it says "instance.instance_eval{ block.call }", I'm trying to find another way to make the new instance variable run instance eval on the block. The only way I can think of to get it to do that is to pass instance_eval the original block, not as a variable or anything, but as a real block like in the test example. Any tips?

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  • Blocking a country (mass iP Ranges), best practice for the actual block

    - by kwiksand
    Hi all, This question has obviously been asked many times in many different forms, but I can't find an actual answer to the specific plan I've got. We run a popular European Commercial deals site, and are getting a large amount of incoming registrations/traffic from countries who cannot even take part in the deals we offer (and many of the retailers aren't even known outside Western Europe). I've identified the problem area to block a lot of this traffic, but (as expected) there are thousands of ip ranges required. My question now (finally!). On a test server, I created a script to block each range within iptables, but the amount of time it took to add the rules was large, and then iptables was unresponsive after this (especially when attempting a iptables -L). What is the most efficient way of blocking large numbers of ip ranges: iptables? Or a plugin where I can preload them efficiantly? hosts.deny? .htaccess (nasty as I'd be running it in apache on every load balanced web server)? Cheers

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  • Postfix block senders outside from local domains

    - by Tibor Peter Toth
    I would like to block every mail that is coming in from a domain that is running on my server. Example: I have domain1.com on my mail server and I'm getting a mail from outside with an email address of [email protected] Then I know it's a Spam, because domain1.com is on my server, so the sender cannot come from outside. I want postfix to check for this, and simply block these kind of emails. I know this is a function in postfix, just don't know which one. Thanks.

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  • Count total file size of many files in Windows

    - by user105249
    When I want to burn a CD R with lots of files, I have to make sure the total file size in my folder doesn't exceed the capacity of the disc (680MB). In Windows are there possibilities to check the total file size of a bunch of files. I put them in a folder, right-click and check the properties. But this is an annoying trial and error kind of way. Either there are too many files in the folder, or too little. I watch the file size go up as I keep selecting more files, using ALT+going down button. No. 2 is my favorite way to do it. Here's my question: For some reason Windows (I still use XP) only shows the total file size of 100 selected files. When you select more than 100 files, no file size information appears any more. Is there way, a trick, an app, to work around this problem?

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  • std::map for storing static const Objects

    - by Sean M.
    I am making a game similar to Minecraft, and I am trying to fine a way to keep a map of Block objects sorted by their id. This is almost identical to the way that Minecraft does it, in that they declare a bunch of static final Block objects and initialize them, and then the constructor of each block puts a reference of that block into whatever the Java equivalent of a std::map is, so there is a central place to get ids and the Blocks with those ids. The problem is, that I am making my game in C++, and trying to do the exact same thing. In Block.h, I am declaring the Blocks like so: //Block.h public: static const Block Vacuum; static const Block Test; And in Block.cpp I am initializing them like so: //Block.cpp const Block Block::Vacuum = Block("Vacuum", 0, 0); const Block Block::Test = Block("Test", 1, 0); The block constructor looks like this: Block::Block(std::string name, uint16 id, uint8 tex) { //Check for repeat ids if (IdInUse(id)) { fprintf(stderr, "Block id %u is already in use!", (uint32)id); throw std::runtime_error("You cannot reuse block ids!"); } _id = id; //Check for repeat names if (NameInUse(name)) { fprintf(stderr, "Block name %s is already in use!", name); throw std::runtime_error("You cannot reuse block names!"); } _name = name; _tex = tex; //fprintf(stdout, "Using texture %u\n", _tex); _transparent = false; _solidity = 1.0f; idMap[id] = this; nameMap[name] = this; } And finally, the maps that I'm using to store references of Blocks in relation to their names and ids are declared as such: std::map<uint16, Block*> Block::idMap = std::map<uint16, Block*>(); //The map of block ids std::map<std::string, Block*> Block::nameMap = std::map<std::string, Block*>(); //The map of block names The problem comes when I try to get the Blocks in the maps using a method called const Block* GetBlock(uint16 id), where the last line is return idMap.at(id);. This line returns a Block with completely random values like _visibility = 0xcccc and such like that, found out through debugging. So my question is, is there something wrong with the blocks being declared as const obejcts, and then stored at pointers and accessed later on? The reason I cant store them as Block& is because that makes a copy of the Block when it is entered, so the block wouldn't have any of the attributes that could be set afterwards in the constructor of any child class, so I think I need to store them as a pointer. Any help is greatly appreciated, as I don't fully understand pointers yet. Just ask if you need to see any other parts of the code.

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  • Is it the address bus size or the data bus size that determines "8-bit , 16-bit ,32-bit ,64-bit " systems?

    - by learner
    My simple understanding is as follows. Memory (RAM) is composed of bits, groups of 8 which form bytes, each of which can be addressed ,and hence byte addressable memory. Address Bus stores the location of a byte of memory. If an address bus is of size 32 bits, that means it can hold upto 232 numbers and it hence can refer upto 232 bytes of memory = 4GB of memory and any memory greater than that is useless. Data bus is used to send the value to be written to/read off the memory. If I have a data bus of size 32 bits, it means a maximum of 4 bytes can be written to/read off the memory at a time. I find no relation between this size and the maximum memory size possible. But I read here that: Even though most systems are byte-addressable, it makes sense for the processor to move as much data around as possible. This is done by the data bus, and the size of the data bus is where the names 8-bit system, 16-bit system, 32-bit system, 64-bit system, etc.. come from. When the data bus is 8 bits wide, it can transfer 8 bits in a single memory operation. When the data bus is 32 bits wide (as is most common at the time of writing), at most, 32 bits can be moved in a single memory operation. This says that the size of the data bus is what gives an OS the name, 8bit, 16bit and so on. What is wrong with my understanding?

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  • Folder Size Column on Explorer on Windows Vista/Seven

    - by Click Ok
    I'm a big fan of FolderSize, but unfortunately it works only on Windows XP. Even reading this and this, I'm not convinced that I cannot to have a column showing the folder size on Windows Explorer. Even with all "problems" FolderSize worked like a charm in WindowsXP. In a sysadmin life, FolderSize is explendid. Before select a lot of folders to send to backup in DVDs, I can check directly in Windows Explorer the size of the folders and get a set of folders with 4.3Gb to burn in a DVD. In another situation, I can view in the root folder the size of the bigger folders in the hard drive and start a good strategy of backup/partitioning/transfer to another drive/etc. If desired, I can tell a lot of another needs that in my sysadmin life I need a tool like FolderSize... There is someone that is actively developing a solution to show folder size on Windows Explorer in Vista/Seven Windows? What the problems that I can face if I develop myself that "add-in" for Windows Explorer?

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  • Shared block device file system (cluster file system without networking)

    - by fungs
    Is there any file system that can be mounted multiple times and supports concurrent file access for Linux? Basically I want something like a cluster file system but without the need to have a running network for a distributed lock manager. That can be very handy in connection with virtual machines that can share data with the host or another VM without the need to create a network link. This I want to avoid to keep the network architecture secure (virtual machine in DMZ) but share large files. No need to scale it up, just two machines that mount the same block device. Shouldn't it be possible to have file locking information right on the disk?

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  • Block IPs if they access a resource

    - by Victor Oliva
    I own a server that it's costantly being attacked by scripts (that try to access to phpMyAdmin's setup file's and stuff like this). I've heard that many people get this kinds of attacks, but I'm starting to worry since they are getting more common (last month I got 2 attacks, and on november 7th there are 3 attempts already (1st, 4th and 6th of nov). I'm not really concerned about it, since I don't have any database. All the info i have on that server is absolutely public, but I'm worried about that attacking-rate increase. So I thought I could -temporarily- block the IPs that come from those attackers, or something that could make my server ignore requests that ask for phpMyAdmin, pma, xamp, etc. Is there something like that? my server is Linux+Apache+Php

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  • PMDB Block Size Choice

    - by Brian Diehl
    Choosing a block size for the P6 PMDB database is not a difficult task. In fact, taking the default of 8k is going to be just fine. Block size is one of those things that is always hotly debated. Everyone has their personal preference and can sight plenty of good reasons for their choice. To add to the confusion, Oracle supports multiple block sizes withing the same instance. So how to decide and what is the justification? Like most OLTP systems, Oracle Primavera P6 has a wide variety of data. A typical table's average row size may be less than 50 bytes or upwards of 500 bytes. There are also several tables with BLOB types but the LOB data tends not to be very large. It is likely that no single block size would be perfect for every table. So how to choose? My preference is for the 8k (8192 bytes) block size. It is a good compromise that is not too small for the wider rows, yet not to big for the thin rows. It is also important to remember that database blocks are the smallest unit of change and caching. I prefer to have more, individual "working units" in my database. For an instance with 4gb of buffer cache, an 8k block will provide 524,288 blocks of cache. The following SQL*Plus script returns the average, median, min, and max rows per block. column "AVG(CNT)" format 999.99 set verify off select avg(cnt), median(cnt), min(cnt), max(cnt), count(*) from ( select dbms_rowid.ROWID_RELATIVE_FNO(rowid) , dbms_rowid.ROWID_BLOCK_NUMBER(rowid) , count(*) cnt from &tab group by dbms_rowid.ROWID_RELATIVE_FNO(rowid) , dbms_rowid.ROWID_BLOCK_NUMBER(rowid) ) Running this for the TASK table, I get this result on a database with an 8k block size. Each activity, on average, has about 19 rows per block. Enter value for tab: task AVG(CNT) MEDIAN(CNT) MIN(CNT) MAX(CNT) COUNT(*) -------- ----------- ---------- ---------- ---------- 18.72 19 3 28 415917 I recommend an 8k block size for the P6 transactional database. All of our internal performance and scalability test are done with this block size. This does not mean that other block sizes will not work. Instead, like many other parameters, this is the safest choice.

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  • Refactor instance declaration from try block to above try block in a method

    - by dotnetdev
    Hi, Often I find myself coming across code like this: try { StreamWriter strw = new StreamWriter(); } However, there is no reference to the object outside the scope of the try block. How could I refactor (extract to field in Visual Studio says there is no field or something) the statement in the try block so that it is declared above the try block so I can use it anywhere in the method? Thanks

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  • Block specific IP block from my website in PHP

    - by iTayb
    I'd like, for example, block every IP from base 89.95 (89.95..). I don't have .htaccess files on my server, so I'll have to do it with PHP. if ($_SERVER['REMOTE_ADDR'] == "89.95.25.37") die(); Would block specific IP. How can I block entire IP blocks? Thank you very much.

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  • Access block level storage via kernel

    - by N 1.1
    How to access block level storage via the kernel (w/o using scsi libraries)? My intent is to implement a block level storage protocol over network for learning purpose, almost the same way SCSI works. Requests will be generated by initiator and sent to target (both userspace program) which makes call to kernel module and returns the data using TCP protocol to initiator. So far, I have managed to build a simple "Hello" module and run it (I am new at kernel programming), but unable to proceed with block access. After searching a lot, I found struct buffer_head * bread(int dev,int block) in linux/fs.h, but the compiler throws error. error: implicit declaration of function ‘bread’ Please help, also feel free to advice on starting with kernel programming. Thank you!

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  • HowTo check whether Exception Block is available for the main PLSQL block or routine

    - by user1297211
    I am trying to think of a validator that checks for Exception block available in PL/SQL block or any routine for the main body ( Highlighted in Bold). Eg : DECLARE some data Procedure xyx IS BEGIN .... EXCEPTION .. END; BEGIN some data BEGIN .... EXCEPTION .. END; **EXCEPTION** some data BEGIN .... EXCEPTION .. END; END; This is a simple example there can be many other scenarios but my need id to find that Exception block is avaialble for the main block of PL/SQL code. Please let me know if you have any suggestion. Thanks

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