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  • Facebook database design?

    - by Marin
    I have always wondered how Facebook designed the friend <- user relation. I figure the user table is something like this: user_email PK user_id PK password I figure the table with user's data (sex, age etc connected via user email I would assume). How does it connect all the friends to this user? Something like this? user_id friend_id_1 friend_id_2 friend_id_3 friend_id_N Probably not. Because the number of users is unknown and will expand.

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  • In-browser HTML editor for tables?

    - by piquadrat
    I'm developing a website that publishes scientific articles, not as PDF but as HTML. As a input tool for the editorial team, we use TinyMCE for normal text plus a couple of custom plugins for footnotes and citations. But we are not really happy with TinyMCEs table controls. Everything but the most simple tables take way to long to write. Are there any specialized table editing tools for the browser out there?

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  • Adding row to Datalist

    - by Scrappy
    I have been searching around the web for a solution to this issue but have come across nothing so far. Basically I have a table as shown below, whhich i made up of itemtemplate fields and is populated by a dataset from my database. It shows brands to the user of which they can then click and go onto another page. I need to add another option to the table called "All Brands". Thus then I can use this to go to a page showing all the brands. However I can not seem to easily add this into the datalist. <asp:DataList id="TypesList" runat="server" Visible="true" RepeatColumns="3" Width="100%" ItemStyle-Width="25%" ItemStyle-HorizontalAlign="Center"> <ItemTemplate> <div style="position:relative;vertical-align:top;"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="center" style="height:170px;vertical-align:top;text-align:center;" valign="top"> <asp:Label ID="lblID" runat="server" Visible="false" Text='<%#DataBinder.Eval(Container.DataItem,"batteryTypeID")%>'></asp:Label> <a href='/<%#DataBinder.Eval(Container.DataItem,"catid")%>/<%#DataBinder.Eval(Container.DataItem,"catname")%>/<%#DataBinder.Eval(Container.DataItem,"brandid")%>/<%#DataBinder.Eval(Container.DataItem,"brand_name")%>/<%#DataBinder.Eval(Container.DataItem,"batteryTypeID")%>/<%#DataBinder.Eval(Container.DataItem,"typeName")%>' target='_self'> <asp:Image ID="imgProd" runat="server" ImageUrl='images/none.jpg' /> </a> </td> </tr> <tr> <td class="productdesc" style="text-align:center;vertical-align:top;"> <span style="color:#000;font-weight:bold;font-size:120%;"> <%#DataBinder.Eval(Container.DataItem, "typeName").ToString%> </span> </td> </tr> </table> </div> </ItemTemplate> </asp:DataList> Thanks in advance for any help

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  • How can I optimize the import of this dataset in mysql?

    - by GeoffreyF67
    I've got the following table schema: CREATE TABLE `alexa` ( `id` int(10) unsigned NOT NULL, `rank` int(10) unsigned NOT NULL, `domain` varchar(63) NOT NULL, `domainStatus` varchar(6) DEFAULT NULL, PRIMARY KEY (`rank`), KEY `domain` (`domain`), KEY `id` (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 It takes several minutes to import the data. To me that seems rather slow as we're only talking about a million rows of data. What can I do to optimize the insert of this data? (already using disable keys) G-Man

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  • importing csv file into pgsql

    - by running4surival
    ok im trying to upload this csv file onto my table in pgsql but im getting this error ERROR: invalid input syntax for integer: "mlname,mfname,slname,sfname,address,postalcode,membershiptype,hphone,email" CONTEXT: COPY members2, line 1, column id: "mlname,mfname,slname,sfname,address,postalcode,membershiptype,hphone,email" i really understand why im getting this error, both my table and my csv file have the same column names

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  • div popup inside td

    - by sims
    I have a table with a bunch of cells. (No way! Amazing! :P) Some of the cells have a small div that when you put your mouse over, it gets bigger so you can read all the text. This works well and all. However, since html elements that come later in the document have a higher z-index, when the div gets bigger it is underneath the other divs in the other cells. Some html code: <table> <tr> <td> limited info <div style="position: relative;"> <div style="position: absolute; top: 0; left: 0; width: 1em; height: 1em;" onmouseover="tooltipshow(this)" onmouseout="tooltiphide(this)"> informative long text is here </div> </div> </td> <td> some short info <div style="position: relative;"> <div style="position: absolute; top: 0; left: 0; width: 1em; height: 1em;" onmouseover="tooltipshow(this)" onmouseout="tooltiphide(this)"> longer explanation about what is really going on that covers the div up there ^^^. darn! </div> </div> </td> </tr> </table> Some js code: function tooltipshow(obj) { obj.style.width = '30em'; obj.style.zIndex = '100'; } function tooltiphide(obj) { obj.style.width = '1em'; obj.style.zIndex = '20'; } It doesn't matter if I set z-index dynamically to something higher onmouseover. It's like z-index has no affect. I think it has something to do with the table. I've tested this in FF3. When I'm feeling particularly macho, I'll test it in IE.

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  • Where is pure virtual function located in C++?

    - by skydoor
    Which virtual table will be pure virtual function located? In the base class or derived class? For example, what does the virtual table look like in each class? class Base { virtual void f() =0; virtual void g(); } class Derived: public Base{ virtual void f(); virtual void g(); }

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  • Proper HTML technique to create an web form out of an image

    - by Lars
    I plan to create an interactive golf score card for my website (XHTML). (Btw. thats how such a scorecard looks like: ScoreCard). So at the end one should be able to insert a score for each hole in the appropriated input field in the virtual scorecard on the website. For me it is very important that the interactive scorecard really looks the same as the original (paper-) scorecard does and so my first approach was to scan and slice the scorecard image to reach that appearance. Here you can see the way I sliced the image: The idea was to insert HTML text input for each score field ending up with something like this: After I sliced the image I reconstructed it using the HTML . To do that I put the image slices as the cell background. <table> <tr> <td style="background: url("slice1.jpg") width="58px" height="25px"> <input type="text"></inputText> </td> </tr> ... </table> At the first moment this worked fine (as Gimp offers quite a nice feature for this). Then the problem was that I had to create a HTML table to create the exact layout. As you can see the lower part of the layout is split up into 3 columns. The middle column is split up into several (for each hole) rows. So the left and right column have to be spanned over those rows. Ok finally that worked, but it lead to some kind of scaling problem. If I zoom in or out on the table the middle column (and only that one) is not scaled the right way. Iam not able to fix this, and so I start doubting if this is the right technique for html image virtualization. Iam really no specialist in the area of creating websites, so I would really appriciate any help on this. Maybe there is a complete other and better technique to do that, as I think it is a common job in webcreation. I couldnt find any nice examples or tuts on that.

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  • jquery: ordinal of td inside tr

    - by deostroll
    I have a row in an html-table that contains only images. (this happens to be the first row too). Those images are wired for a click event too. While trying to handle the click event I can find out its parent (i.e. <td> element). But I want to know its relative ordinal in the table row (<tr).

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  • PHP Session / Array Problem accesing

    - by Chris
    Hello, I have a form that certain data, which then gets calculated and gets displayed in a table. All the data gets saved in a 2 dimensional array. Every time i go back to the form the new data gets saved in the array. That data will be displayed in the next table row and so on. I have used print_r($_Session) and everything gets properly saved in the array. Although i have no idea how to acces the session variables area, floor, phone, network etc wich are now in the array. Without arrays i stored them in a variable for example $phone , and did calculations with it. But now when i use the arrays, i keep on getting undefined index phone etc... How can i acces these variables, been looking at this for hours without getting any closer to a solution. Any help much appreciated. Regards. First page: if (empty ($ _POST)) ( Mode = $ name $ _POST ['state name']; $ Area = $ _POST ['size']; $ Floor = isset ($ _POST ['floor'])? $ _POST ['Floor'] 0, / / if checkbox checked value 1 else 0 $ Phone = isset ($ _POST ['phone'])? $ _POST ['Phone']: 0; $ Network = isset ($ _POST ['network'])? $ _POST ['Network']: 0; / / Control surface if (is_numeric ($ area)) / / OK ( if (isset ($ _SESSION ['table'])) ( / / Create a new row to the existing session table $ Table = $ _SESSION ['table']; $ Number = count ($ table); $ Table [$ count] [0] = $ file name; $ Table [$ count] [1] = $ size; $ Table [$ count] [2] = $ floor; $ Table [$ count] [3] = $ phone; $ Table [$ count] [4] = $ network; $ _SESSION ['Table'] = $ table; ) else ( / / Create the session table $ Table [0] [0] = $ file name; $ Table [0] [1] = $ size; $ Table [0] [2] = $ floor; $ Table [0] [3] = $ phone; $ Table [0], [4] $ = network; $ _SESSION ['Table'] = $ table; ) header ("Location: ExpoOverzicht.php"); ) else ( echo "<h1> surface Wrong - New try </ h1>"; ) ) When i made the php code withotu the arrays i declared like this, and it worked fine. But now there in the array, and i have no idea how to "acces them" $standnaam = $_SESSION["standnaam"]; $oppervlakte = $_SESSION["oppervlakte"]; $verdieping = $_SESSION["verdieping"]; $telefoon = $_SESSION["telefoon"]; $netwerk = $_SESSION["netwerk"];

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  • Unable to drop constraint in sql server 2005 "Could not drop constraint. See previous errors"

    - by DannykPowell
    I'm trying to drop a constraint on a db table, something like: ALTER TABLE MyTable drop CONSTRAINT FK_MyTable_AnotherTable But the execution just runs and runs. If I stop it I see: Msg 3727, Level 16, State 0, Line 2 Could not drop constraint. See previous errors. Web search throws up various pages but note that the constraint is properly named and I am trying to remove it using the correct name

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  • How do I combine two rows of same part, but add quantities?

    - by Tom
    I have table "PICKITEM" PARTID QTY A 1 A 3 B 11 C 8 D 5 D 3 I need a select statement that will return one line for like PARTIDs and add the qty field to together, yet also return the rest of the lines in the table as is PARTID QTY A 4 B 11 C 8 D 8 Probably a newb question, but I am new to SQL syntax and queries. Any help in getting me on the right path would be appreciated!

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  • How do I drop 'NOT NULL' from a column in MySQL?

    - by Will
    A show create table command shows the following: 'columnA' varchar(6) NOT NULL DEFAULT ''; How do I modify that column so that the not null is removed? I need it to be: 'columnA' varchar(6) DEFAULT NULL; I thought the following would work, but it has no effect: ALTER TABLE tbl_name MODIFY columnA varchar(6) DEFAULT NULL;

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  • SQL SERVER – Update Statistics are Sampled By Default

    - by pinaldave
    After reading my earlier post SQL SERVER – Create Primary Key with Specific Name when Creating Table on Statistics, I have received another question by a blog reader. The question is as follows: Question: Are the statistics sampled by default? Answer: Yes. The sampling rate can be specified by the user and it can be anywhere between a very low value to 100%. Let us do a small experiment to verify if the auto update on statistics is left on. Also, let’s examine a very large table that is created and statistics by default- whether the statistics are sampled or not. USE [AdventureWorks] GO -- Create Table CREATE TABLE [dbo].[StatsTest]( [ID] [int] IDENTITY(1,1) NOT NULL, [FirstName] [varchar](100) NULL, [LastName] [varchar](100) NULL, [City] [varchar](100) NULL, CONSTRAINT [PK_StatsTest] PRIMARY KEY CLUSTERED ([ID] ASC) ) ON [PRIMARY] GO -- Insert 1 Million Rows INSERT INTO [dbo].[StatsTest] (FirstName,LastName,City) SELECT TOP 1000000 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Update the statistics UPDATE STATISTICS [dbo].[StatsTest] GO -- Shows the statistics DBCC SHOW_STATISTICS ("StatsTest"PK_StatsTest) GO -- Clean up DROP TABLE [dbo].[StatsTest] GO Now let us observe the result of the DBCC SHOW_STATISTICS. The result shows that Resultset is for sure sampling for a large dataset. The percentage of sampling is based on data distribution as well as the kind of data in the table. Before dropping the table, let us check first the size of the table. The size of the table is 35 MB. Now, let us run the above code with lesser number of the rows. USE [AdventureWorks] GO -- Create Table CREATE TABLE [dbo].[StatsTest]( [ID] [int] IDENTITY(1,1) NOT NULL, [FirstName] [varchar](100) NULL, [LastName] [varchar](100) NULL, [City] [varchar](100) NULL, CONSTRAINT [PK_StatsTest] PRIMARY KEY CLUSTERED ([ID] ASC) ) ON [PRIMARY] GO -- Insert 1 Hundred Thousand Rows INSERT INTO [dbo].[StatsTest] (FirstName,LastName,City) SELECT TOP 100000 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Update the statistics UPDATE STATISTICS [dbo].[StatsTest] GO -- Shows the statistics DBCC SHOW_STATISTICS ("StatsTest"PK_StatsTest) GO -- Clean up DROP TABLE [dbo].[StatsTest] GO You can see that Rows Sampled is just the same as Rows of the table. In this case, the sample rate is 100%. Before dropping the table, let us also check the size of the table. The size of the table is less than 4 MB. Let us compare the Result set just for a valid reference. Test 1: Total Rows: 1000000, Rows Sampled: 255420, Size of the Table: 35.516 MB Test 2: Total Rows: 100000, Rows Sampled: 100000, Size of the Table: 3.555 MB The reason behind the sample in the Test1 is that the data space is larger than 8 MB, and therefore it uses more than 1024 data pages. If the data space is smaller than 8 MB and uses less than 1024 data pages, then the sampling does not happen. Sampling aids in reducing excessive data scan; however, sometimes it reduces the accuracy of the data as well. Please note that this is just a sample test and there is no way it can be claimed as a benchmark test. The result can be dissimilar on different machines. There are lots of other information can be included when talking about this subject. I will write detail post covering all the subject very soon. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Index, SQL Optimization, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Statistics

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  • pfsense single MAC is listed with several IP's in ARP table

    - by Tillebeck
    I have this problem: arp table filling up But I am quite sure that I cannot blame Kaspersky. Scenarie: a user plugs his computer in. He waits and waits but are getting no IP by DHCP. Then he is told there is an IP conflict... He end up assigning himself a static IP to access the net In the ARP table of the router I see: 192.168.24.144 00:16:41:42:3c:9e Lenovo LAN 192.168.24.145 00:16:41:42:3c:9e Lenovo LAN 192.168.24.181 00:16:41:42:3c:9e Lenovo LAN 192.168.24.150 00:16:41:42:3c:9e Lenovo LAN 192.168.24.151 00:16:41:42:3c:9e Lenovo LAN 192.168.24.152 00:16:41:42:3c:9e Lenovo LAN 192.168.24.156 00:16:41:42:3c:9e Lenovo LAN 192.168.24.157 00:16:41:42:3c:9e Lenovo LAN 192.168.24.159 00:16:41:42:3c:9e Lenovo LAN 192.168.24.160 00:16:41:42:3c:9e Lenovo LAN 192.168.24.130 00:16:41:42:3c:9e Lenovo LAN 192.168.24.132 00:16:41:42:3c:9e Lenovo LAN 192.168.24.164 00:16:41:42:3c:9e Lenovo LAN 192.168.24.137 00:16:41:42:3c:9e Lenovo LAN 192.168.24.140 00:16:41:42:3c:9e Lenovo LAN 192.168.24.206 00:16:41:42:3c:9e Lenovo LAN The last .206 is the static address he gave himself. Several users descripe the exact same problem. It started after removing some filters in the switches, så all users are on a LAN and can see each other. Before, when filters blocked access to each others comptuers no one reported this kind of behavior. Any idéeas?

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  • Can't remove route from routing table

    - by anon
    (I am on Windows Server 2003.) I see a couple of unusual entries in my routing table that I would like to remove: Network Destination Netmask Gateway Interface Metric XXX.27.44.1 255.255.255.255 127.0.0.1 127.0.0.1 20 XXX.27.255.255 255.255.255.255 XXX.27.44.1 XXX.27.44.1 20 All the "XXX"'s are the same octet. I would strongly prefer NOT to clear the routing table, since this is a production server. Here is what I've tried: route delete XXX.27.44.1 The route specified was not found. route delete XXX.27.44.1 mask 255.255.255.255 127.0.0.1 metric 20 The route specified was not found. route delete XXX.27.255.255 The route specified was not found. route delete XXX.27.255.255 mask 255.255.255.255 XXX.27.44.1 metric 20 The route specified was not found. I also tried adding the routes in hopes that I could delete them: route add XXX.27.44.1 mask 255.255.255.255 127.0.0.1 metric 20 The route addition failed: The parameter is incorrect. route add XXX.27.255.255 mask 255.255.255.255 XXX.27.44.1 metric 20 The route addition failed: The parameter is incorrect. Bonus question: What do these entries do, and how did they get there?

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  • Degraded RAID-5 array with lvm2 lost superblock and partition table

    - by Fred Phillips
    I have a RAID-5 array of 4x1TB hard disks with one lvm2 partition on Ubuntu Linux 10.04 LTS. One of the disks has failed. I have re-assembled the array without this failed disk but now mdadm --examine claims the array has no superblock and fdisk says it has no partition table. What can I do to recover the data? # mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Mar 5 14:43:49 2011 Raid Level : raid5 Array Size : 2930276352 (2794.53 GiB 3000.60 GB) Used Dev Size : 976758784 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Sat Mar 5 15:06:49 2011 State : clean, degraded Active Devices : 3 Working Devices : 3 Failed Devices : 1 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : boba:1 (local to host boba) UUID : 52eb4bc9:c3d8aab5:e0699505:e0e1aa05 Events : 18 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 65 1 active sync /dev/sde1 2 8 49 2 active sync /dev/sdd1 3 0 0 3 removed 4 8 17 - faulty spare /dev/sdb1 # mdadm --examine /dev/md0 mdadm: No md superblock detected on /dev/md0. # fdisk -l /dev/md0 Disk /dev/md0: 3000.6 GB, 3000602984448 bytes 2 heads, 4 sectors/track, 732569088 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 524288 bytes / 1572864 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table # cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] md0 : active raid5 sdb1[4](F) sda1[0] sdd1[2] sde1[1] 2930276352 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UUU_] unused devices: <none>

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  • SQL Server 2008 Replication: Snap Shot Agent timing out on a specific table

    - by Nai
    Hi all, I am going through the process of setting up a transactional replication on my set up. However, I am unable to generate a full snap shot of my database. I keep getting stuck at the same particular point of the process. From snapshot agent: [46%] The process is running and is waiting for a response from the server Other sources have mentioned increasing the timeout period but I do not think this is the problem as this occurs at around the 10 min mark, way within the default value of 1800s. So, I removed that article/table from the snapshot, and lo and behold, it works. So I was looking at the Schema of the table and in my identity column, the NOT FOR REPLICATION was set to TRUE. All my other tables have it set to FALSE. Could this be the source of the error? Also, I tried changing this to false via the GUI but got received a timeout error. Is there a script that allows me to change this? Thanks all.

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  • Disk doesn't contain a valid partition table

    - by Jeevan Dongre
    I was running a m1.small instance ec2 ubuntu instance. I was running out of disk space, so I upgraded my instance to medium. When I upgraded I actually got 429.5 GB of space and after that I added 10 gb of volume too. When I run the "sudo fdisk -l" command I got this results. Disk /dev/sda1: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sda1 doesn't contain a valid partition table Disk /dev/sda2: 429.5 GB, 429461078016 bytes 255 heads, 63 sectors/track, 52212 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sda2 doesn't contain a valid partition table Disk /dev/sdf: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 sda1 is the primary parition and sda2 is what I got added upgrading my system to medium. But the problem persists, I am not able to pull the code from git, it is giving me this error. remote: Counting objects: 409, done. remote: Compressing objects: 100% (236/236), done. fatal: write error: No space left on device fatal: index-pack failed

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  • XP - ping changes routing table?

    - by Corelgott
    Hey Folks, I have got a real strange behaviour with one of my XP-Sp3 machines. Setup: A Server in the lan (192.168.5.0) proviedes access to all roadwarriors in 10.8.0.0 The DCHP has a static route for all clients pronouncing 192.168.5.235 as gateway for 10.8.0.0 All Clients can ping & access the vpn-machines; everything works like a charm But one Xp-Sp3 is not willing to connect to them. It gets all the same routes as any other sytem in the lan and I trippel-checked - there are no static routes on this machine When I ping any 10.8.0.0 device from this machine, the first two packaged work like a charm; but the next two (and any package after them) fail and get lost. When I look back into the routing table: There is a new route; a special one just for the device I pinged, which points to the right gateway - but which wasn't there earlier... As Long as this route exists the machine can't ping anything on 10.8.0.0. But if I remove the route by hand: The next to ping packages work fine... Has anybody got an idea about that? Anybody every seen such a behaviour? Any hint / help / tip is greatly appreachiated! thx in advance Corelgott Ps: I attach an image of the cmd to clarify things - its in german, but reading a routing table shouldn't be that hard...

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  • Restoring MBR, partition table, and boot sector of memory card without data loss ("USBC")

    - by Synetech
    Abstract I have a FAT32 memory card that when inserted into a computer causes Windows to prompt to format it. The card is definitely not supposed to be blank and has a bunch of files on it. Symptoms Using a hex-editor/disk-viewer, I examined the card and found that several sectors/clusters have been overwritten with something that has a signature of USBC at the start of the sector. Specifically, the master boot record (and partition table) is gone (hence Windows thinking the card is blank and needing to be formatted), as are the boot sectors (they have the USBC signature and a volume label of NO NAME and partition type of FAT32). Fortunately, it looks like both copies of the FAT are almost entirely intact (a few FAT entries at the start of a cluster here and there seem to be overwritten by USBC). The root directory is also nearly intact—I can see the volume label entry and subdirectory listings, but one sector is overwritten. (There are no more instances of USBC after the last one in the FAT2.) Hypothesis These observations seem to indicate some sort of virus that erases a few key filesystem structures, and then overwrites a few extra sectors here and there. Googling it seems to corroborate the idea of a virus, except that others report a file called USBC which does not apply here, and in fact, could not be possible since there is no filesystem to even see files. I cannot find any information about a virus with these symptoms, nor a removal tool. (I can't help but wonder if it is actually due to an autorun virus prevention tool.) Question I can likely fix the FAT corruption since they are mostly contiguous chains and maybe even the lost sector of the root directory, but does anyone know of a convenient way to restore or (re)create the MBR/partition table and boot sectors (without formatting or overwriting the data)?

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  • Can Haproxy deny a request by IP if its stick-table is full?

    - by bantic
    In my haproxy configs I'm setting a stick-table of size 5 that stores every incoming IP address (for 1 minute), and it is set as nopurge so new entries won't get stored in the table. What I'd like to have happen is that they would get denied, but that isn't happening. The stick-table line is: stick-table type ip size 5 expire 1m nopurge store gpc0 And the whole configs are: global maxconn 30000 ulimit-n 65536 log 127.0.0.1 local0 log 127.0.0.1 local1 debug stats socket /var/run/haproxy.stat mode 600 level operator defaults mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms backend fragile_backend tcp-request content track-sc2 src stick-table type ip size 5 expire 1m nopurge store gpc0 server fragile_backend1 A.B.C.D:80 frontend http_proxy bind *:80 mode http option forwardfor default_backend fragile_backend I have confirmed (connecting to haproxy's stats using socat readline /var/run/haproxy.stat) that the stick-table fills up with 5 IP addresses, but then every request after that from a new IP just goes straight through -- it isn't added to the stick-table, nothing is removed from the stick-table, and the request is not denied. What I'd like to do is deny the request if the stick-table is full. Is this possible? I'm using haproxy 1.5.

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