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  • terminal-window viewer for tab-delimited files in *nix?

    - by khedron
    I work with a lot of tab-delimited data files, with varying columns of uncertain length. Typically, the way people view these files is to bring them down from the server to their Windows or Mac machine, and then open them up in Excel. This is certainly fully-featured, allowing filtering and other nice options. But sometimes, you just want to look at something quickly on the command line. I wrote a bare-bones utility to display the first<n>lines of a file like so: --- line 1 --- 1:{header-1} 2:{header-2} 3:... --- line 2 --- 1:{data-1} 2:{data-2} 3:... This is, obviously, very lame, but it's enough to pipe through grep, or figure out which header columns to use "cut -f" on. Is there a *nix-based viewer for a terminal session which will display rows and columns of a tab-delimited file and let you move the viewing window over the file, or otherwise look at data? I don't want to write this myself; instead, I'd just make a reformatter which would replace tabs with spaces for padding so I could open the file up in emacs and see aligned columns. But if there's already a tool out there to do something like this, that'd be great! (Or, I could just live with Excel.)

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  • How do I force a restore over an existing database?

    - by Ian Boyd
    I have a database, and i want to force a restore over top of it. I check the option: Overwrite the existing database (WITH REPLACE) But, as expected, SSMS is unable to overwrite the existing database. Of course i don't want different filenames; i want to overwrite the existing database. How do i force a restore over an existing database? And for Google search crawler: File '%s' is claimed by '%s'(4) and '%s"(3). The WITH MOVE clause can be used to relocate one or more files. RESTORE DATABASE is terminating abnormally. (Microsoft SQL Server, Error: 3176) Update The script (before i deleted the database, because i needed to get it done) was: RESTORE DATABASE [HealthCareGovManager] FILE = N'HealthCareGovManager_Data', FILE = N'HealthCareGovManager_Archive', FILE = N'HealthCareGovManager_AuditLog' FROM DISK = N'D:\STAGING\HealthCareGovManager10232013.bak' WITH FILE = 1, MOVE N'HealthCareGovManager_Data' TO N'D:\CGI Data\HealthCareGovManager.MDF', MOVE N'HealthCareGovManager_Archive' TO N'D:\CGI Data\HealthCareGovManager.ndf', MOVE N'HealthCareGovManager_AuditLog' TO N'D:\CGI Data\HealthCareGovManager.ndf', MOVE N'HealthCareGovManager_Log' TO N'D:\CGI Data\HealthCareGovManager.LDF', NOUNLOAD, REPLACE, STATS = 10 I used the UI to delete the existing database, so that i could use the UI to force an overwrite of the (non)existing database. Hopefully there can be an answer so that the next guy can have an answer. No, nobody was in the context of the database (The error message from other connections is quite different from this error, and i only got to see this error after i killed the other connections).

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  • Device CAL, User Cal or Processor license needed for SQL 2008 (architecture explained inside)?

    - by nycgags
    So we have a number of servers in the Amazon cloud running SQL Server Standard edition to aggregate data. For that purpose we are fine, the licensing is handled by our contract with Amazon, no problem there. For the beefier work, we want to install Enterprise Edition (EE) on our servers processing raw data so that we can take advantage of table partitioning. We currently have 3 servers aggregating data from about 40 node servers, all 43 of these servers are running standard edition which is fine. We also have 4 servers running standard processing the raw data, but I think we can get away with 2 (for redundancy) running Enterprise Edition. We have 2-3 dba's that access these DW servers for maintenance (using the same windows login via remote desktop). So visually: 40 -- 3 -- [2] -- 2 -- 1 nodes -- aggregators -- raw (which we want to run EE) -- calculators -- datawarehouse Nodes PUSH to aggregators, Raws PULL from aggregators, Calculators PULL from Raw, Calculators PUSH to datwarehouse I am specifying the push vs. pull in case that changes how the # of licenses is calculated. Q1) how many device (or user) CAL's do we need? Q2) do I need to speak with someone from MSFT to find out if it is ok to install in the Amazon Cloud (Amazon said we need to verify it is ok in our license terms)? Q3) what happens if another device tries to access a server with the limited number of device CAL's? Q4) Are the device CAL's simultaneous number of devices or total? Q5) Do Device and User CAL's cost the same or is there a difference? Q6) Would we need to buy a processor license (we are hoping not to)?

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  • Transfer disk contents *without* cloning tools

    - by Chris Cummins
    Is it possible to "clone" a disk which contains programs by performing a copy of all the disk contents (preserving file attributes) from source to destination disk, and unplugging the source disk and changing the drive letter of the destination disk to match that of the source? Context I have a two disk Windows 8 system with a system drive and a data drive. Recently, the data drive developed a number of bad sectors leading to IO errors. I have been sent a replacement drive so I simply need to clone the contents of this data drive onto the replacement. The drive contents include documents & media, user folders (My Documents and related), and some programs (games etc). Problem The problem is that the bad sectors on the source disk causes most disk cloning tools to fail with read errors. Attempted approaches include: Disk clone from live boot environment with Acronis True Image. Fails due to read errors. Disk clone from live boot environment with Clonezilla. Fails due to read errors. Disk clone using Roadkil's Unstoppable Copier. Fails due to hardware timeouts in the HDD (application hangs indefinitely). A straightforward copy from source to destination disk using FreeFileSync (preserving file attributes and metadata). This succeeds. So at the moment I have a replacement disk which contains all of the data from the original disk. Now all I need to is somehow get Windows to replace all references to the old disk to the new one. Is this possible by simply swapping the assigned drive letters? Any help would be greatly appreciated, thanks!

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  • Connection timed out on Node.js app running under CentOS

    - by ss1271
    I followed this tutorial to create a simple node.js app on my CentOS: the node.js version is: $ node -v v0.10.28 Here's my app.js: // Include http module, var http = require("http"), // And url module, which is very helpful in parsing request parameters. url = require("url"); // show message at console console.log('Node.js app is running.'); // Create the server. http.createServer(function (request, response) { request.resume(); // Attach listener on end event. request.on("end", function () { // Parse the request for arguments and store them in _get variable. // This function parses the url from request and returns object representation. var _get = url.parse(request.url, true).query; // Write headers to the response. response.writeHead(200, { 'Content-Type': 'text/plain' }); // Send data and end response. response.end('Here is your data: ' + _get['data']); }); // Listen on the 8080 port. }).listen(8080); However, when I uploaded this app onto my remote server (assume the address is 123.456.78.9), I couldn't get access to it on my browser http://123.456.78.9:8080/?data=123 The browser returned Error code: ERR_CONNECTION_TIMED_OUT. I tried the same app.js code which runs fine on my local machine, is there anything I am missing? I tried to ping the server and its address was reachable. Thanks.

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  • Mesh Networked servers via vpn

    - by microspino
    I got a design idea and I would like to have some advice from SF about It. I have 5 customers with small real-estate databases. I've built for them a desktop app and now they would like to merge their database to share their data. I don't want to centralize everything in one place nor I want to do maintenance for servers. They told me also, that all of them in their offices, have little servers and maintenance guys available. Although everything seems suitable for web application, I had the idea to experiment something new: Any customer small-server wild be connected to the others in a sort of mesh network without a single point of failure and through VPNs. If one of the servers went down the customers could still connect to their databases from one of the other mesh networked servers instead of from the local one that is down. During normal operations all the servers sync the db with the others through VPNs. I can accept a half-day timing window of NON synched data, in other words, since I don't need real time synchronization, the server don't have to always stay in synch. I can migrate my data over to other Non-Sql technologies like CouchDB or Redis or whatever you suggest. As you can see I don't have a lot of constraints and although I could go with a web application I would like to delegate and decentralize support, data-privacy and management, as more as I can to my customers offices. Is that a crazy idea? Do you know If something similar exist? Which technology would you suggest?

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  • Windows Small Business System 2003. SQL timeout in Server Performance Report

    - by tetranz
    I'm the volunteer IT admin at a small school. We have SBS 2003 with about ten desktops. The server performance report is emailed to me daily. It is setup with a wizard in the Monitoring and Performance part of the "Server Management" console. It often fails with a "The page cannot be displayed" error. The event log shows Event Type: Error Event Source: ServerStatusReports Event Category: None Event ID: 1 Date: 1/16/2011 Time: 6:03:14 AM User: N/A Computer: ALPHA Description: Server Status Report: URL: http://localhost/monitoring/perf.aspx?reportMode=1&allHours=1 Error Message: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. Stack Trace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, TdsParserState state) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, TdsParserState state) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParser.ReadNetlib(Int32 bytesExpected) [plus lots more stack trace] This has been happening for years :) I've never really solved it. It seems to be related to WSUS. When it happens, I run the Update Services "Server Cleanup Wizard". That takes a long time to run. If I haven't run it for a while it can take 10 hours. I also run the WsusDBMaintenance.sql script (from TechNet I think) which reindexes the database etc. Those two things seem to get it working again for a while. Recently the "while" has become a couple of weeks. My searching online has revealed lots of people having this problem but no real solution. Does anyone have any good ideas about this? I have to wonder if something in the WSUS SQL schema is not indexed properly. The time that the server cleanup wizard takes seems ridiculous. Thanks

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  • What is the correct authentication mechanism when there are users inside and outside the domain?

    - by Gary Barrett
    We have a Windows 7 enterprise desktop data entry app for mobile (laptop) users with local SQL Express 2008 R2 Express db that syncs data with an SQL Server 2008 R2 Server db. Authentication is required before syncing the data. The existing group of users are part of the organisation's domain so normal scenario and they connect to the Sql Server directly. But there are plans for a second group of app users who belong to various partner organisations so they are outside our domain and have their own various separate domains/accounts. The aim is to deploy the desktop app to them and they will periodically sync data to our SQL Server. What I am uncertain of: Is it possible to authenticate users from another domain? Can permissions be managed via Active Directory etc? Which authentication protocol should be used in this scenario? Windows, Forms, SQL, etc? The IT people are requesting users of the system be managed via Active Directory. Is it possible to manage the external domain users access via Active Directory?

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  • Using the full width of an Excel chart with two Y-axes

    - by Jørn Schou-Rode
    I am trying to create a line chart in MicrosoftExcel 2007 with two data series, each with their own Y-axis. First, I create a simple chart by selecting the two data series, and choosing Insert > Charts > Line from the Ribbon. I now see the following chart in my workbook: I then continue my quest by right clicking one of the data series (lines) and choosing Format data series > Series Options > Secondary Axis. My chart is now looks like this: This is almost what I want. I did not expect to see the gap between the last X-axis tick point (x = 5) and the secondary (right most) Y-axis. Why does Excel introduce this gap? Is there anything I can do to avoid it? I have tried right clicking the X-axis and seleting Format Axis > Axis Options > Position Axis: Between tick marks, but that only introduces a similar gap on by the primary (left most) Y-axis.

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  • The BitLocker encrypted logical drive of my laptop is not accessible. On clicking error appears,"Application not found"

    - by Nauman Khan
    I had an important personal data that was stored in my laptop drive 'F'. My 4 year old son also uses my laptop to play games. To secure my data I used bitlocker software that was already there in my windows 7 ultimate 32 bit. I am using a Dell D 630 Core2Duo laptop. The thing worked fine for me and I have been able to access my data in drive 'F' as and when I required. But today, when I tried to open my 'F' drive, an error box appeared saying "Application not found". I right clicked and checked 'properties' of 'F' drive. It showed me Used Space = 0 bytes and Free Space = 0 bytes. I opened 'Disk Management' which showed my 'F' drive file system as 'Unknown (Bitlocker Encrypted). 'Disk Management' is also showing my 'F' drive as healthy logical drive. I opened 'Manage bitlocker' and found that my 'F' drive was being shown locked and 'Unlock Drive' was displayed against it, however, when i click on 'Unlock Drive', it does not function. I opened 'TPM Administration' and found an information that 'Compatible TPM cannot be found'. My bitlocker encryption was working fine which means that I had a compatible TPM in my laptop. Where has it gone? How can I enable it? Is my 'F' Drive lost forever and thus the data in there as well?

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  • Change to different user, or let different user execute a command

    - by WG-
    I have a problem. There is a server which I can access with an account by ssh, lets say WG. Now there is a folder with the following permissions. drwxr-s---+ 855 vvz www-data 20K Aug 21 17:56 pictures I want to copy this folder using rsync, however since I am not the user www-data but WG I cannot execute rsync. So I want www-data to execute a rsync command. However, I do not posses sudo powers. My friend however tells me that I am actually able to execute the rsync command as www-data, but he will not tell me how. I asked him for some clues and he told me that it had something to do with reverse shell (which I figured out to be that you connect by ssh to your server and then you connect back to your own server, or something). I also asked if it was by-design or actually a flaw in the system. He tells me it is both. Furthermore I think it has something to do with the group permissions. If I just make sure that I am with the group permissions then I can also read the files. Anybody has a clue?

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  • suPHP not working

    - by amarc
    OS: Ubuntu 10.04 etc/suphp/suphp.conf: [global] ;Path to logfile logfile=/var/log/suphp/suphp.log ;Loglevel loglevel=info ;User Apache is running as webserver_user=www-data ;Path all scripts have to be in docroot=/home ;Path to chroot() to before executing script ;chroot=/mychroot ; Security options allow_file_group_writeable=false allow_file_others_writeable=false allow_directory_group_writeable=false allow_directory_others_writeable=false ;Check wheter script is within DOCUMENT_ROOT check_vhost_docroot=true ;Send minor error messages to browser errors_to_browser=false ;PATH environment variable env_path=/bin:/usr/bin ;Umask to set, specify in octal notation umask=0077 ; Minimum UID min_uid=100 ; Minimum GID min_gid=100 [handlers] ;Handler for php-scripts application/x-httpd-suphp="php:/usr/bin/php-cgi" ;Handler for CGI-scripts x-suphp-cgi="execute:!self" some vhost in sites-enabled: NameVirtualHost *:8080 <VirtualHost *:8080> ServerAdmin ... ServerName ... ServerAlias ... AddType application/x-httpd-php .php AddHandler application/x-httpd-php .php suPHP_Engine on suPHP_UserGroup user user suPHP_ConfigPath "/home/user/etc" suPHP_PHPPath /usr/bin DocumentRoot /home/user/web/site.com/ ErrorLog /var/log/apache2/site.com-error_log CustomLog /var/log/apache2/site.com-access_log common <Directory /home/user/web/site.com/> Order Deny,Allow Allow from all Options +Indexes </Directory> </VirtualHost> But when I did nano /home/user/web/id.php and paste <?php system('id'); ?> in it, result I get is: uid=33(www-data) gid=33(www-data) groups=33(www-data) Have no idea what to do so I was hoping comunity could help ty.

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  • Is there a way to have "default" or "placeholder" values in Excel?

    - by Iszi
    I've got a spreadsheet with cells that I want to be user-editable, but that I also want to have "default" or "placeholder" values in, whenever there is no user-entered data. There's a couple good use cases for this: Prevent formula errors, while providing reasonable assumptions when a user has not entered (or has deleted) their own value. I could use conditional formatting to alert the user to default values, so as to prevent their ignorance of them - they can then make an informed choice as to whether that value is still appropriate or not for the intended calculations. Give a short description of what is intended to be entered in the cell, without having to have a separate "instructions" segment or document. This would also eliminate the need for a nearby "Label" cell, in some cases where it's really not appropriate. To accomplish what I want, I need some formula, script, or other advanced spreadsheet option that will do the following: Show the default value in the cell before user enters data. Allow the default value to be found by any formulas referencing the cell, when there is no user-entered data in that cell. Allow the user to freely (naturally, exactly as they would do with any "normal" cell) overwrite the displayed value with their own value or formula, and have the user-entered data found by any formulas referencing the cell. When cell is blanked by deletion of user input, revert to default value. Is there a way to do this in Excel, or am I asking too much of a spreadsheet program here?

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  • How do I connect remotely to SQL Server from Windows client?

    - by humble_coder
    Hi All, Having a bit of an issue connecting to SQL SERVER remotely from Windows. I've verified that all of my settings are correct via SQL SERVER MANAGEMENT STUDIO EXPRESS and SQL SERVER CONFIGURATION MANAGER. I can connect remotely using ODBC drivers from other OSes (e.g. OS X, Linux, etc). However, when I connect with the same credentials from a remote Windows machine using "SQL SERVER" as the driver I am told that the system cannot connect. I've tried creating an ODBC Data Source and I get the same error: Connection failed: SQLState: '01000' SQL Server Error: 14 [Microsoft][ODBC SQL Server Driver][TCP/IP Sockets]ConnectionOpen(InvalidInstance()). Connection failed: SQLState: '08001' SQL Server Error: 14 [Microsoft][ODBC SQL Server Driver][TCP/IP Sockets]Invalid Connection From the non-windows machines I can use the IP address of the SQL Server just fine. However, on the remote Windows machine, neither IP address nor named instance works. FYI, I can create an ODBC Data Source using the named instance on the machine actually running the SQL Server (but this is, of course, nothing special -- just proof that it isn't completely hosed). One interesting note: If I use SQL STUDIO 2005 from a Windows client machine, I can use the IP address to connect remotely. Still, the whole reason I bring this up is because I need to use a software package I've written to connect to SQL Server remotely from Windows machines as well. Previously the solution was only needed to xfer data from SQL Server into a PostGRES or MySQL database on non-Windows machines (due to DBA preference). However, now they also want to move the data from the legacy software to MySQL even on Windows. Any assistance would be most appreciated. Feel free to provide a full example connection string. Best

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  • HD working with IDE USB adapter but not recognised by bios

    - by Rajeeva
    I have a Windows XP Pentium III desktop with two hard drives. The first one has the OS and is luckily working. The second drive on the secondary master IDE channel few days back was unable to read some files and since then for some time it was failing and reviving intermittently and now it is always showing as failed on the IDE channel When the HD was intermittenly failing, I was able to copy some data from it to the other drive - also during that time if the system was running and the hard disk failed at that time, the system froze and then i had to reboot. then I got a new 80 gb hdd similar (same make - seagate barracuda) to the earlier failing one, a new data cable for the drive and an IDE to USB adapter. the new hard drive i installed in the previous drive's place (secondary master), formatted it and it worked for 1 day and then it also failed - simultaneously i connected the old hd to the IDE/USB adapter and i could view all the data - some of that data i was able to back up from the old hd to the new hd before the new hd failed the new hd i have tried connecting on the primary channel as the slave disk but when i do that then the bios does not detect either the OS drive or the new drive and the system does not boot surprisingly, the older (previously failed) hd and the new hd are both working fine on the usb channel with the IDE/USB adapter. i have ruled out any problem with the secondary channel since the dvd rom i was earlier using as primary slave have now connected to secondary master and it works fine. i am really confused by this behavior on my system. please can anybody try to solve this for me. thanks.

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  • Cannot destroy ZFS snapshot: dataset already exists

    - by Morven
    I have a server (T5220, though I doubt it matters) running Solaris 10 8/07 and I have a ZFS pool, "mysql", on internal disk. Within it I have a filesystem "mysql/data/4.1.12", which I snapshot hourly with a script from cron. I have one snapshot, created as one of those hourly snaps, that will not destroy. I have renamed it out of sequence to be "mysql/data/4.1.12@wibble" so that my script will not try and fail to destroy it, but it was originally within the sequence, though I doubt that matters. It renames successfully. The snapshot can be successfully navigated and read from through the .zfs/snapshots directory. It has no clones based on it. Trying to destroy it does this: (265) root@web-mysql4:/# zfs destroy mysql/data/4.1.12@wibble cannot destroy 'mysql/data/4.1.12@wibble': dataset already exists (266) root@web-mysql4:/# which is apparently nonsensical: of course it already exists, that's the point! Anyone seen anything like this before? Web searches show nothing obviously similar. I can provide patches installed if necessary.

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  • Permissions Issue with Files Generated by PerfMon

    - by SvrGuy
    We are trying to implement some data logging to CSV files using a Data Collector Set in PerfMon (on a windows Server 2008R2 system). The issue we are running into is that we (seemingly) can't control the permissions being set on the log files created by perfmon. What we want is for the log files created by perfmon to have Everyone:F permissions (Full Control for Everyone). So, we have a directory structure setup where all logs go into a folder: c:\vms\PerfMonLogs\%MACHINENAME% (e.g. c:\vms\PerfMonLogs\EvaluationG2) In the above example, c:\vms\PerfMonLogs\EvaluationG2 has permissions Everyone:F (below is the icacls for this directory) EVALUATIONG2/ Everyone:(OI)(CI)(F) NT AUTHORITY\SYSTEM:(OI)(CI)(F) BUILTIN\Administrators:(OI)(CI)(F) BUILTIN\Performance Log Users:(OI)(R) When the data collector set runs, it creates new sub folders and files within c:\vms\PerfMonLogs\EvaluationG2, e.g. (C:\vms\PerfMonLogs\EVALUATIONG2\M11d26y2012N3) Each of these directories and files has the following permissions: M11d26y2012N3 NT AUTHORITY\SYSTEM:(OI)(CI)(F) BUILTIN\Administrators:(OI)(CI)(F) BUILTIN\Performance Log Users:(OI)(R) So these new folders and not simply inheriting permissions from the parent folder (don't know why). Now, we tried adding Everyone:F using the security tab on the collector set (No dice). Any ideas? How do we control the permissions on the log files generated by perfmon data collector set?

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  • Sed: Deleting all content matching a pattern

    - by Svish
    I have some plist files on mac os x that I would like to shrink. They have a lot of <dict> with <key> and values. One of these keys is a thumbnail which has a <data> value with base64 encoded binary (I think). I would like to remove this key and value. I was thinking this could maybe be done by sed, but I don't really know how to use it and it seems like sed only works on a line-by-line basis? Either way I was hoping someone could help me out. In the file I would like to delete everything that matches the following pattern or something close to that: <key>Thumbnail<\/key>[^<]*<\/data> In the file it looks like this: // Other keys and values <key>Thumbnail</key> <data> TU0AKgAAOEi25Pqx3/ip2fak0vOdzPCVxu2RweuPv+mLu+mIt+aGtuaEtOSB ... dCBBcHBsZSBDb21wdXRlciwgSW5jLiwgMjAwNQAAAAA= </data> // Other keys and values Anyone know how I could do this? Also, if there are any better tools that I can use in the terminal to do this, I would like to know about that as well :)

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  • Replicated filesystem and EC2 MySQL

    - by El Yobo
    I'm currently investigating migrating our infrastructure over to run on Amazon's EC2 and am trying to figure out the best way to set up a MySQL service. I'm leaning towards running our own MySQL instances, rather than going with Amazon's RDS, but am still considering the best approach for performance and cost on the instance itself. In order to have persistent data, the MySQL data needs to be on an EBS volume (with some form of striped RAID, e.g. RAID0 or RAID10) to improve persistence. However, EBS IO is limited by the network interface (gigabit, so a theoretical maximum of 128 MB/s), while the ephemeral volumes have no such problem. I did see a suggestion for running two MySQL servers on an instance, with a master running on the ephemeral disk (which we would also RAID) and a slave storing changes to an EBS volume, but this has some additional overhead and complexity (two servers). What I was imagining is using some form of replicated file system such that I could have a filesystem on top of a RAID0 of ephemeral volumes to maximise performance all changes from the above immediately replicated to another RAID1 volume backed by multiple EBS volumes to ensure no data loss The advantages of this would be best possible IO performance for the DB server; no network delay in IO decreased IO on EBS volumes (as all read IO will be done on the ephemeral volumes) so decreased cost good data security, as it's backed onto redundant EBS volumes However, I haven't seen an appropriate system to replicate all changes from one volume to the other; is there a filesystem, or any other approach, which will do this? The distributed file systems, e.g. GlusterFS, DRBD etc seem to focus on replicating disks between servers, can they be set up to do what I'm interested in here? I also haven't seen anything about other's taking this approach. Do I have a solution in need of a problem here (i.e. is performance good enough, so this whole idea is redundant)? Is there some flaw in the plan?

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  • Expand a volume residing on one X-RAID disk installed on a Netgear ReadyNas Duo v2

    - by Sid
    I've got a Netgear ReadyNas Duo v2 (2 disk slots). System is configured with X-RAID which does not provide flexibility but automatically expands based on a sort of RAID-5 logic. I had 2 500 GB hard disk installed, redundant, so I had 500 GB of volume size. I wanted to upgrade the whole system to 3 GB * 2 hard disk maintaining both the data already on the NAS and the data on one of the two 3 TB hard disks. So I did this: Unplugged one disk from the ReadyNas. Now the readynas has 1*500 GB non redundant. Plugged one empty 3 TB hard disk. Now the readynas has 1*500 GB + 1*3 TB, redundant. I waited for the resync. I then unplugged the 500 GB hard disk, so that I have only the 3 TB hard disk with the previous data. Now what I want is to copy the data on my other 3 TB hard disk in the NAS, so that I can plug this other disk in the NAS and use it for redundancy. The problem is that: the NAS has the (single) 3 TB hard disk in X-RAID, but the volume does not expand to 3 TB, it remains fixed to 500 GB. Is there a way to tell the ReadyNas to force expanding the volume to the whole disk without plugging in another hard disk of the same size?

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  • How to slave a 3.5" 500gb SATA external hard drive (Western Digital) to my Dell Inspiron laptop

    - by AJ HDD
    I have a 3.5" Western Digital My Book 500gb external hard drive. I gave it to a friend of mine, and he broke the USB port in it. I went to a nearby comp repair shop and had him solder the thing, and it didn't detect when it when I plugged it into my Dell Inspiron laptop. I recently saw about the 3.5" SATA to USB enclosure, so I went to check it. Strangely, when its placed in the enclosure, its not detecting in Windows. Also, when it was put as secondary (I'm guessing slave) to the shop fellow's desktop, it shows up in the BIOS and while starting, but then again doesn't show in Windows 7. The guy told me that I need to use a data recovery tool to get my data back. P.S. Whe WD hard drive doesnt have an OS, just data. So my question is: Can I slave the drive to my Dell laptop and try to recover the data, and if so how? I would really appreciate it any help, thanks in advance.

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  • Wipe free space on LVM-LUKS (dm-crypt) Volume

    - by peter4887
    My three partitions for my system are created with LVM on a LUKS partition (dm-crypt). These are /home, / and swap. The filesystem is ext4. They are encrypted, because they are on my laptop and I don't want that some laptop thieves get my data. But I often share my laptop with other people so they can access my encrypted partitions. I don't want that these people can recover my cache and all the data I deleted. So I'm now trying to wipe all my free space on /home to prevent against recovering with tools like photorec. (one overwrite should do, the need of multiple overwriting is just a rumor) But still I haven't found any solution to wipe this free space successfully. I tried dd if=/dev/zero of=/home/fillitup bs=512 count=[count of free sectiors] so my partition was complete full of data. df /dev/mapper/home said 100% is used and there are 0 sectors available. But I could still recover gigs of data with photorec, although I selected to recover just form the free space. photorec displays: /dev/mapper/home - 340 GB / 317 GiB (RO) , but df displays that the size of /home is just 313G, why are there these differences and what did the 340GB means? It looks like there is a place on my /dev/mapper/home partition, that I can't access to overwrite, but I can access it to recover. I also checked for corrupted sectors, but there aren't any. Maybe this is the space between my existing files? Did anyone knows why I can't wipe my free space with dd, and how I can find the location of the loads of recoverable files, to securely delete them?

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  • Understanding MySQL Query Caches and when to implement it?

    - by Jeff
    On our current MySQL server query cache is enabled. Qchache_hits: 31913 Qchache_inserts: 50959 Qchache_lowmem_prunes: 9320 Qchache_not_chached: 209320 Qchache_queries_in_chace: 986 com_update: 0 com_delete: 0 I do not fully understand the Query cache - I am reading about it currently and trying to understand it. Our database holds inventory data, customer data, employee data, sales data and so forth. The query is very rarely run more than once. The possibility of a query being run twice is viewing a specific sales information twice. But basically everything in our system changes constantly. It is always being updated, deleted, insterted and off the top of my head I can't picture users running the same query twice within a week. Do I even need to have the query cache enabled? I am guessing that the inserts means 51k entries have been added, but only 986 of those are being stored? Would an idea be to refresh the cache, and watch it for a week and check how many of the queries in cached are accessed maybe on a weekly basis to see if it is actually returning any benefits? Any help/guidance on this is appreciated, thanks

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  • Where can someone store >100GB of pictures online? [closed]

    - by sbi
    A person who is not very computer-savvy needs to store 130GB of photos. The key parameters are: an non-negligible probability that the company selling the storage will be existing, and the data accessible, for at least five years data should be considered safe once uploaded reasonable terms of service: google drive reserving the right to literally do anything they want with their user's data is not acceptable; the possibility that the CIA might look at those pictures is not considered a threat easy to use from Windows, preferably as a drive no nerve-wracking limitations ("cannot upload 10GB/day" or "files 500MB" etc.) that serve no purpose other than pushing the user to the next-higher price plan some upgrade plan: there's currently 10-30GB of new photos per year, with a tendency to increase, which might bust a 150GB limit next January ability to somehow sort the pictures: currently they are sorted into folders, but something alike (tags) would be just as good, if easy enough to apply of course, the pricing is important (although there's a reason this is the last bullet; reasonable data safety is considered more important) Nice to have, but not necessary features would be: additional features related to photos (thumbnail generation, album sharing etc.) access from web and other platforms than Windows (smart phones) Let me stress this again: The person in need of that is able to copy pictures from the camera to the computer, can copy files in the explorer, and uses a web email service. That's about it, there's almost no understanding of what happens under the hood.

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  • BKF file corruption

    - by Naitik Semwaal
    I don't wanna ask anything here as I have nothing to ask. Instead of that, if I share some useful info here, would you guys mind? If not, then let me proceed. You must have heard about "Back up", the process in which we create backup copies of our crucial data into a file, called BKF (backup) file. Having a valid BKF file, provides security to our data against unwanted data loss or corruption. Whenever such a critical situation takes place, we can restore our BKF file and get our data back (but only if backed up earlier). Do you guys ever thought that why a BKF file gets corrupted? What could be the reasons which make the BKF file corrupted or inaccessible? One day while googling, I found a blog post named as: Reasons of BKF file corruption. I read it, it was very informative. In this blog, I came to know about the reasons for corruption in BKF files. I shared the blog here so that users can read it and clear their doubts of BKF file corruption. I hope this would be helpful.

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