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• Virtual Lab part 2&ndash;Templates, Patterns, Baselines

  - by Geoff N. Hiten

  Once you have a good virtualization platform chosen, whether it is a desktop, server or laptop environment, the temptation is to build “X”.  “X” may be a SharePoint lab, a Virtual Cluster, an AD test environment or some other cool project that you really need RIGHT NOW.  That would be doing it wrong. My grandfather taught woodworking and cabinetmaking for twenty-seven years at a trade school in Alabama.  He was the first instructor hired at that school and the only teacher for the first two years.  His students built tables, chairs, and workbenches so the school could start its HVAC courses.   Visiting as a child, I also noticed many extra “helper” stands, benches, holders, and gadgets all built from wood.  What does that have to do with a virtual lab, you ask?  Well, that is the same approach you should take.  Build stuff that you will use.  Not for solving a particular problem, but to let the Virtual Lab be part of your normal troubleshooting toolkit. Start with basic copies of various Operating Systems.  Load and patch server and desktop OS environments.  This also helps build your collection of ISO files, another essential element of a virtual Lab.  Once you have these “baseline” images, you can use your Virtualization software’s snapshot capability to freeze the image.  Clone the snapshot and you have a brand new fully patched machine in mere moments.  You may have to sysprep some of the Microsoft OS environments if you are going to create a domain environment or experiment with clustering.  That is still much faster than loading and patching from scratch. So once you have a stock of raw materials (baseline images in this case) where should you start.  Again, my grandfather’s workshop gives us the answer.  In the shop it was workbenches and tables to hold large workpieces that made the equipment more useful.  In a Windows environment the same role falls to the fundamental network services:  DHCP, DNS, Active Directory, Routing, File Services, and Storage services.  Plan your internal network setup.  Build out an AD controller with all the features listed.  Make the actual domain an isolated domain so it will not care about where you take it.  Add the Microsoft iSCSI target.  Once you have this single system, you can leverage it for almost any network environment beyond a simple stand-alone system. Having these templates and fundamental infrastructure elements ready to run means I can build a quick lab in minutes instead of hours.  My solutions are well-tested, my processes fully documented with screenshots, and my plans validated well before I have to make any changes to client systems.  the work I put in is easily returned in increased value and client satisfaction.

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• Any reliable polygon normal calculation code?

  - by Jenko

  I'm currently calculating the normal vector of a polygon using this code, but for some faces here and there it calculates a wrong normal. I don't really know what's going on or where it fails but its not reliable. Do you have any polygon normal calculation that's tested and found to be reliable? // calculate normal of a polygon using all points var n:int = points.length; var x:Number = 0; var y:Number = 0; var z:Number = 0 // ensure all points above 0 var minx:Number = 0, miny:Number = 0, minz:Number = 0; for (var p:int = 0, pl:int = points.length; p < pl; p++) { var po:_Point3D = points[p] = points[p].clone(); if (po.x < minx) { minx = po.x; } if (po.y < miny) { miny = po.y; } if (po.z < minz) { minz = po.z; } } for (p = 0; p < pl; p++) { po = points[p]; po.x -= minx; po.y -= miny; po.z -= minz; } var cur:int = 1, prev:int = 0, next:int = 2; for (var i:int = 1; i <= n; i++) { // using Newell method x += points[cur].y * (points[next].z - points[prev].z); y += points[cur].z * (points[next].x - points[prev].x); z += points[cur].x * (points[next].y - points[prev].y); cur = (cur+1) % n; next = (next+1) % n; prev = (prev+1) % n; } // length of the normal var length:Number = Math.sqrt(x * x + y * y + z * z); // turn large values into a unit vector if (length != 0){ x = x / length; y = y / length; z = z / length; }else { throw new Error("Cannot calculate normal since triangle has an area of 0"); }

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• Our own Daily WTF

  - by Dennis Vroegop

  Originally posted on: http://geekswithblogs.net/dvroegop/archive/2014/08/20/our-own-daily-wtf.aspxIf you're a developer, you've probably heard of the website the DailyWTF. If you haven't, head on over to http://www.thedailywtf.com and read. And laugh. I'll wait. Read it? Good. If you're a bit like me probably you've been wondering how on earth some people ever get hired as a software engineer. Most of the stories there seem to weird to be true: no developer would write software like that right? And then you run into a little nugget of code one of your co-workers wrote. And then you realize: "Hey, it happens everywhere!" Look at this piece of art I found in our codebase recently: public static decimal ToDecimal(this string input) {     System.Globalization.CultureInfo cultureInfo = System.Globalization.CultureInfo.InstalledUICulture;     var numberFormatInfo = (System.Globalization.NumberFormatInfo)cultureInfo.NumberFormat.Clone();     int dotIndex = input.IndexOf(".");     int commaIndex = input.IndexOf(",");     if (dotIndex > commaIndex)         numberFormatInfo.NumberDecimalSeparator = ".";     else if (commaIndex > dotIndex)         numberFormatInfo.NumberDecimalSeparator = ",";     decimal result;     if (decimal.TryParse(input, System.Globalization.NumberStyles.Float, numberFormatInfo, out result))         return result;     else         throw new Exception(string.Format("Invalid input for decimal parsing: {0}. Decimal separator: {1}.", input, numberFormatInfo.NumberDecimalSeparator)); }  Me and a collegue have been looking long and hard at this and what we concluded was the following: Apparently, we don't trust our users to be able to correctly set the culture in Windows. Users aren't able to determine if they should tell Windows to use a decimal point or a comma to display numbers. So what we've done here is make sure that whatever the user enters, we'll translate that into whatever the user WANTS to enter instead of what he actually did. So if you set your locale to US, since you're a US citizen, but you want to enter the number 12.34 in the Dutch style (because, you know, the Dutch are way cooler with numbers) so you enter 12,34 we will understand this and respect your wishes! Of course, if you change your mind and in the next input field you decide to use the decimal dot again, that's fine with us as well. We will do the hard work. Now, I am all for smart software. Software that can handle all sorts of input the user can think of. But this feels a little uhm, I don't know.. wrong.. Or am I too old fashioned?

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• Rebuilding a Mac Mini (early 2009)

  - by Kelly Jones

  This weekend I decided to rebuild the family’s Mac Mini.  It’s the early 2009 model and I hadn’t done it since we got it in March of 2009.  Even worse, I had done the import data step (or whatever Apple calls it) which brought over all of the data files and apps from our previous Mac.  AND that install goes back to before 2005, as far as I can remember.  SO, to say that “cruft” had built up in the operating system, is probably a bit of an understatement. The rebuild went pretty smoothly, especially since I had a couple of spare hard drives.  I hooked up a spare USB drive and formatted it for use with the Mac.  I then used Carbon Copy to clone the internal hard drive onto the USB drive.  (Carbon Copy is a great little app that I used several years ago and I was happy to see it was not only still around, but updated as well.) Once I had my backup, I shut down the Mac and replaced the internal hard drive.  I had purchased the hard drive last fall to use with my work laptop, but I got a new work laptop (with awesome dual SSDs) so I wasn’t using it anymore.  The replacement drive (Seagate Momentus 7200.4 ST9500420AS 500GB 7200 RPM 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive) has more than double the original’s capacity and is also faster.  I’ll have to keep an eye on the temperature, since that 7200 drive will run hotter. Opening the Mac Mini is not for the easily intimidated!  That cool little case is quite the pain to open.  Luckily, OWC put a video together here.  After replacing the drive, I then installed a clean copy of OS 10.5 using the DVDs that came with the Mac.  After the OS, it was time to reinstall the apps.  I downloaded some of the freeware, just to make sure I had the latest versions.  For the rest, I just copied from the backup cloned drive to the new drive.  (I love the way most Mac apps are written – with almost everything contained within a “package” that I can just copy from one drive to another.  MUCH better than the Windows way of using shared DLLs and the registry to store critical pieces that the app needs in order to run!) The whole process took longer than I would have preferred, but it was long overdue.  It definitely “feels” faster, especially boot time and application launches.

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• How do I keep user input and rendering independent of the implementation environment?

  - by alex

  I'm writing a Tetris clone in JavaScript. I have a fair amount of experience in programming in general, but am rather new to game development. I want to separate the core game code from the code that would tie it to one environment, such as the browser. My quick thoughts led me to having the rendering and input functions external to my main game object. I could pass the current game state to the rendering method, which could render using canvas, elements, text, etc. I could also map input to certain game input events, such as move piece left, rotate piece clockwise, etc. I am having trouble designing how this should be implemented in my object. Should I pass references to functions that the main object will use to render and process user input? For example... var TetrisClone = function(renderer, inputUpdate) { this.renderer = renderer || function() {}; this.inputUpdate = input || function() {}; this.state = {}; }; TetrisClone.prototype = { update: function() { // Get user input via function passed to constructor. var inputEvents = this.inputUpdate(); // Update game state. // Render the current game state via function passed to constructor. this.renderer(this.state); } }; var renderer = function(state) { // Render blocks to browser page. } var inputEvents = {}; var charCodesToEvents = { 37: "move-piece-left" /* ... */ }; document.addEventListener("keypress", function(event) { inputEvents[event.which] = true; }); var inputUpdate = function() { var translatedEvents = [], event, translatedEvent; for (event in inputEvents) { if (inputEvents.hasOwnProperty(event)) { translatedEvent = charCodesToEvents[event]; translatedEvents.push(translatedEvent); } } inputEvents = {}; return translatedEvents; } var game = new TetrisClone(renderer, inputUpdate); Is this a good game design? How would you modify this to suit best practice in regard to making a game as platform/input independent as possible?

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• ??????????????????

  - by kazun

  2012 ? 8 ? 9 ???????????? ?? 13F ??????????????????????? DB ???????????????????????????????????????????????????????·????????????·??????????Exadata ?????????? Hybrid Columnar Compression(HCC)?????????????????????????????? (1)?????????????????IT????????????? ?????????????·??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????IT???????????????????ZFS Storage Appliances ????????100Petabytes ??(8 ? 9 ???)? ZFS Storage ?????????????????????????????????????????????????????????????????????? (2)????????????????????????????? ??????????? VTR ???????????????????? EOL(End of Life)????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????7 ??????????? StorageTek SL150 ??????????????????????????450TB(????)?30~300 ????????????????????????? 10.1TB?????????????????????????????????????????????????????????????????????????????? ??:StorageTek SL150(????????????) ?????????????????????????????????????????????????????????? (3)Oracle????????????????????????? ??????(????????)????????????????????????????????????????????????Sun ZFS Storage Appliance?????????????????????????????Sun ZFS Storage Appliance ?Pillar Axiom ???????????????????????????? ?????????Oracle Database?????????????????????????????????????????? Database ????????? Hybrid Columnar Compression / Snapshot?Clone????????????????DB???????? I/O Quality of Services?????????DB??? ????? ???Optimized Solutions????Oracle??????(??????????????????)????????????????????????????????Exadata ?? InfiniBand ?????????????????1?????? ??????????????????????????????????????????????Oracle Database ? Exadata ?????????????????????????? Oracle ?????????????????????? Sun ZFS Storage 7120 Appliance ??????????????????????? ??:Sun ZFS Storage 7120 Appliance (4)?????????Oracle Database ??????????????? “Hybrid Columnar Compression (HCC) ” ????????????? HCC??????????????????????????????????????????????????? I/O ????????????????????????????????????????????Oracle Database ???? HCC ??????????????? ?????:?Oracle ????·???? 2009?12? Exadata Hybrid Columnar Compression? ?????????Sun ZFS Storage Appliance ?Pillar Axiom ?????????4??????HCC??????????????????? HCC ???????? HCC ???????? Exadata ? DataGuard ?????HCC ?????????????????????? Exadata ??????????????·??????????????? DB ??????? HCC ?????? ?????????????????????????HCC ?????????????????????????????????? ?????????? HCC ?????????????????????ZFS Storage Appliance ? Pillar Axiom ?????????????????????? 6 ?????????????????????????????????????? ¦???????? ???????????

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• Git on Windows 7 expecting Linux? /dev/null not found error

  - by Klikini

  I have installed git (not GitHub) on Windows 7 x64 Home Premium, and I cannot get it to work. Opening Git Bash outputs the following: Welcome to Git (version 1.9.4-preview20140815) Run 'git help git' to display the help index. Run 'get help <command>' to display help for specific commands. sh.exe": /dev/null: No such file or directory sh.exe": /dev/null: No such file or directory sh.exe": /dev/null: No such file or directory sh.exe": /dev/null: No such file or directory sh.exe": /dev/null: No such file or directory sh.exe": /dev/null: No such file or directory Andy@ANDY-DELL ~ $ If I open the Git GUI, I get a this box: Title: git-gui: fatal error Content: fatal: open /dev/null or dup failed: No such file or directory Git Gui requires Git 1.5.0 or later. I also tried GitHub for Windows, but I got an internet connection error when attempting to clone a repo, even though my connection is fine. Is this possibly related? I have learned so far that /dev/null is the Linux version of the Windows NUL, but why is it trying to do this on Windows? Thanks in advance.

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• GhettoVCB.sh log is wrong

  - by Michael

  2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_ROTATION_COUNT = 2 2010-02-25 16:03:02 -- info: CONFIG - DISK_BACKUP_FORMAT = thin 2010-02-25 16:03:02 -- info: ============================== ghettoVCB LOG START ============================== 2010-02-25 16:03:02 -- info: CONFIG - ADAPTER_FORMAT = buslogic 2010-02-25 16:03:02 -- info: CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = 0 2010-02-25 16:03:02 -- info: CONFIG - ENABLE_HARD_POWER_OFF = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_VOLUME = /vmfs/volumes/nfs_storage_backup/vm1 2010-02-25 16:03:02 -- info: CONFIG - ITER_TO_WAIT_SHUTDOWN = 3 2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_ROTATION_COUNT = 2 2010-02-25 16:03:02 -- info: CONFIG - POWER_DOWN_TIMEOUT = 5 2010-02-25 16:03:02 -- info: CONFIG - DISK_BACKUP_FORMAT = thin 2010-02-25 16:03:02 -- info: CONFIG - SNAPSHOT_TIMEOUT = 15 2010-02-25 16:03:02 -- info: CONFIG - ADAPTER_FORMAT = buslogic 2010-02-25 16:03:02 -- info: CONFIG - LOG_LEVEL = info 2010-02-25 16:03:02 -- info: CONFIG - BACKUP_LOG_OUTPUT = /tmp/ghettoVCB.log 2010-02-25 16:03:02 -- info: CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = 0 2010-02-25 16:03:02 -- info: CONFIG - ENABLE_HARD_POWER_OFF = 0 2010-02-25 16:03:02 -- info: CONFIG - ITER_TO_WAIT_SHUTDOWN = 3 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_MEMORY = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_QUIESCE = 0 2010-02-25 16:03:02 -- info: CONFIG - POWER_DOWN_TIMEOUT = 5 2010-02-25 16:03:02 -- info: CONFIG - VMDK_FILES_TO_BACKUP = all 2010-02-25 16:03:02 -- info: CONFIG - SNAPSHOT_TIMEOUT = 15 2010-02-25 16:03:02 -- info: CONFIG - LOG_LEVEL = info 2010-02-25 16:03:02 -- info: CONFIG - BACKUP_LOG_OUTPUT = /tmp/ghettoVCB.log 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_MEMORY = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_QUIESCE = 0 2010-02-25 16:03:02 -- info: CONFIG - VMDK_FILES_TO_BACKUP = all 2010-02-25 16:03:13 -- info: Initiate backup for VM1 2010-02-25 16:03:13 -- info: Initiate backup for VM1 2010-02-25 16:03:13 -- info: Creating Snapshot "ghettoVCB-snapshot-2010-02-25" for VM1 2010-02-25 16:03:13 -- info: Creating Snapshot "ghettoVCB-snapshot-2010-02-25" for VM1 Failed to clone disk : The file already exists (39). Destination disk format: VMFS thin-provisioned Cloning disk '/vmfs/volumes/datastore1/machine/VM1.vmdk'... 2010-02-25 16:04:16 -- info: Removing snapshot from VM1 ... Destination disk format: VMFS thin-provisioned Cloning disk '/vmfs/volumes/datastore1/machine/VM1.vmdk'... How can I fix this issue, the backup is working, but the log shows something like 2 back-up's in the exact time?

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• Git apache : unable to push via http

  - by GlinesMome

  I have to setup a server which can allow http vcs management (such as git and svn). svn support works well, but I have some trouble with git. Actual configuration: CentOS 5 Apache 2.2.8 Git 1.7.4.1 The /etc/httpd/conf/httpd.conf content: ServerTokens OS ServerRoot "/etc/httpd" PidFile run/httpd.pid Timeout 120 KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 10 <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 256 MaxRequestsPerChild 4000 </IfModule> <IfModule worker.c> StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 </IfModule> Listen 80 LoadModule auth_basic_module modules/mod_auth_basic.so LoadModule auth_digest_module modules/mod_auth_digest.so LoadModule authn_file_module modules/mod_authn_file.so LoadModule authn_alias_module modules/mod_authn_alias.so LoadModule authn_anon_module modules/mod_authn_anon.so LoadModule authn_dbm_module modules/mod_authn_dbm.so LoadModule authn_default_module modules/mod_authn_default.so LoadModule authz_host_module modules/mod_authz_host.so LoadModule authz_user_module modules/mod_authz_user.so LoadModule authz_owner_module modules/mod_authz_owner.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so LoadModule authz_dbm_module modules/mod_authz_dbm.so LoadModule authz_default_module modules/mod_authz_default.so LoadModule ldap_module modules/mod_ldap.so LoadModule authnz_ldap_module modules/mod_authnz_ldap.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule logio_module modules/mod_logio.so LoadModule env_module modules/mod_env.so LoadModule ext_filter_module modules/mod_ext_filter.so LoadModule mime_magic_module modules/mod_mime_magic.so LoadModule expires_module modules/mod_expires.so LoadModule deflate_module modules/mod_deflate.so LoadModule headers_module modules/mod_headers.so LoadModule usertrack_module modules/mod_usertrack.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule mime_module modules/mod_mime.so LoadModule dav_module modules/mod_dav.so LoadModule status_module modules/mod_status.so LoadModule autoindex_module modules/mod_autoindex.so LoadModule info_module modules/mod_info.so LoadModule dav_fs_module modules/mod_dav_fs.so LoadModule vhost_alias_module modules/mod_vhost_alias.so LoadModule negotiation_module modules/mod_negotiation.so LoadModule dir_module modules/mod_dir.so LoadModule actions_module modules/mod_actions.so LoadModule speling_module modules/mod_speling.so LoadModule userdir_module modules/mod_userdir.so LoadModule alias_module modules/mod_alias.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_balancer_module modules/mod_proxy_balancer.so LoadModule proxy_ftp_module modules/mod_proxy_ftp.so LoadModule proxy_http_module modules/mod_proxy_http.so LoadModule proxy_connect_module modules/mod_proxy_connect.so LoadModule cache_module modules/mod_cache.so LoadModule suexec_module modules/mod_suexec.so LoadModule disk_cache_module modules/mod_disk_cache.so LoadModule file_cache_module modules/mod_file_cache.so LoadModule mem_cache_module modules/mod_mem_cache.so LoadModule cgi_module modules/mod_cgi.so LoadModule mysql_auth_module modules/mod_auth_mysql.so LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-3.0.2/ext/apache2/mod_passenger.so PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-3.0.2 PassengerRuby /usr/bin/ruby Include conf.d/*.conf User apache Group apache ServerAdmin aedi.admin@domain ServerName s1.domain UseCanonicalName Off DocumentRoot "/data/www/" <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory "/data/www/"> Options -Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> <IfModule mod_userdir.c> UserDir disable </IfModule> DirectoryIndex index.html index.html.var AccessFileName .htaccess <Files ~ "^\.ht"> Order allow,deny Deny from all </Files> TypesConfig /etc/mime.types DefaultType text/plain <IfModule mod_mime_magic.c> MIMEMagicFile conf/magic </IfModule> HostnameLookups Off ErrorLog logs/error_log LogLevel warn LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent CustomLog logs/access_log combined ServerSignature On Alias /icons/ "/var/www/icons/" <Directory "/var/www/icons"> Options Indexes MultiViews AllowOverride None Order allow,deny Allow from all </IfModule> </Directory> <IfModule mod_dav_fs.c> DAVLockDB /var/lib/dav/lockdb ScriptAlias /cgi-bin/ "/var/www/cgi-bin/" <Directory "/var/www/cgi-bin"> AllowOverride None Options None Order allow,deny Allow from all </Directory> IndexOptions FancyIndexing VersionSort NameWidth=* HTMLTable AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip AddIconByType (TXT,/icons/text.gif) text/* AddIconByType (IMG,/icons/image2.gif) image/* AddIconByType (SND,/icons/sound2.gif) audio/* AddIconByType (VID,/icons/movie.gif) video/* AddIcon /icons/binary.gif .bin .exe AddIcon /icons/binhex.gif .hqx AddIcon /icons/tar.gif .tar AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv AddIcon /icons/compressed.gif .Z .z .tgz .gz .zip AddIcon /icons/a.gif .ps .ai .eps AddIcon /icons/layout.gif .html .shtml .htm .pdf AddIcon /icons/text.gif .txt AddIcon /icons/c.gif .c AddIcon /icons/p.gif .pl .py AddIcon /icons/f.gif .for AddIcon /icons/dvi.gif .dvi AddIcon /icons/uuencoded.gif .uu AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl AddIcon /icons/tex.gif .tex AddIcon /icons/bomb.gif core AddIcon /icons/back.gif .. AddIcon /icons/hand.right.gif README AddIcon /icons/folder.gif ^^DIRECTORY^^ AddIcon /icons/blank.gif ^^BLANKICON^^ DefaultIcon /icons/unknown.gif ReadmeName README.html HeaderName HEADER.html AddLanguage ca .ca AddLanguage cs .cz .cs AddLanguage da .dk AddLanguage de .de AddLanguage el .el AddLanguage en .en AddLanguage eo .eo AddLanguage es .es AddLanguage et .et AddLanguage fr .fr AddLanguage he .he AddLanguage hr .hr AddLanguage it .it AddLanguage ja .ja AddLanguage ko .ko AddLanguage ltz .ltz AddLanguage nl .nl AddLanguage nn .nn AddLanguage no .no AddLanguage pl .po AddLanguage pt .pt AddLanguage pt-BR .pt-br AddLanguage ru .ru AddLanguage sv .sv AddLanguage zh-CN .zh-cn AddLanguage zh-TW .zh-tw LanguagePriority en ca cs da de el eo es et fr he hr it ja ko ltz nl nn no pl pt pt-BR ru sv zh-CN zh-TW ForceLanguagePriority Prefer Fallback AddDefaultCharset UTF-8 AddType application/x-compress .Z AddType application/x-gzip .gz .tgz AddHandler type-map var AddType text/html .shtml AddOutputFilter INCLUDES .shtml Alias /error/ "/var/www/error/" <IfModule mod_negotiation.c> <IfModule mod_include.c> <Directory "/var/www/error"> AllowOverride None Options IncludesNoExec AddOutputFilter Includes html AddHandler type-map var Order allow,deny Allow from all LanguagePriority en es de fr ForceLanguagePriority Prefer Fallback </Directory> </IfModule> </IfModule> BrowserMatch "Mozilla/2" nokeepalive BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0 BrowserMatch "RealPlayer 4\.0" force-response-1.0 BrowserMatch "Java/1\.0" force-response-1.0 BrowserMatch "JDK/1\.0" force-response-1.0 BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully BrowserMatch "MS FrontPage" redirect-carefully BrowserMatch "^WebDrive" redirect-carefully BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully BrowserMatch "^gnome-vfs/1.0" redirect-carefully BrowserMatch "^XML Spy" redirect-carefully BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully NameVirtualHost *:80 NameVirtualHost *:443 <VirtualHost *:80> DocumentRoot /data/www/s1/html ServerName s1.asso.domain ErrorLog logs/s1.error.log </VirtualHost> <VirtualHost *:80> DocumentRoot /data/www/s2/old ServerName s2.domain ErrorLog logs/s2.error.log RailsBaseURI /blog <Directory /data/www/s2/html/blog> Options -MultiViews </Directory> </VirtualHost> <VirtualHost *:443> DocumentRoot /data/www/s2/html ServerName s2.domain ErrorLog logs/s2.error.log RailsBaseURI /blog <Directory /data/www/s2/html/blog> Options -MultiViews </Directory> </VirtualHost> The /etc/httpd/conf.d/git.conf content: Alias /git /data/www/s2/git <Directory /data/www/s2/git> Options +Indexes DAV on SSLRequireSSL </Directory> Fine, every repository are created by the same way: git --bare init "$1.git" && cd "$1.git" && git update-server-info && chmod -R 770 . && cd .. && git clone `pwd`/"$1.git" && cd "$1" && echo 42 > answer && git add . && git commit -m "Initial commit" && git push origin master && git rm answer && git commit -a -m "Clean repository" && git push && cd .. && rm -Rf "$1" Then, on the client side, I try: ~ $ git clone https://s2.domain/git/repo.git Cloning into 'repo'... warning: You appear to have cloned an empty repository. ~ $ cd repo repo $ echo 42 > answer && git add . && git commit -m "init" && git push origin master [master (root-commit) a2aadb1] init 1 file changed, 1 insertion(+) create mode 100644 answer Fetching remote heads... refs/ refs/heads/ refs/tags/ updating 'refs/heads/master' from 0000000000000000000000000000000000000000 to a2aadb1772e12104ce358f7ff9a11db5d93ead7d sending 3 objects MOVE d81cc0710eb6cf9efd5b920a8453e1e07157b6cd failed, aborting (22/502) MOVE 2c186ad49fa24695512df5e41cb5e6f2d33c119b failed, aborting (22/502) MOVE a2aadb1772e12104ce358f7ff9a11db5d93ead7d failed, aborting (22/502) Updating remote server info fatal: git-http-push failed The apache associated logs: my.ip - - [21/Sep/2012:16:19:19 +0200] "GET /git/repo.git/info/refs?service=git-upload-pack HTTP/1.1" 200 - "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:19 +0200] "GET /git/repo.git/HEAD HTTP/1.1" 200 23 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:48 +0200] "GET /git/repo.git/info/refs?service=git-receive-pack HTTP/1.1" 200 - "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "GET /git/repo.git/HEAD HTTP/1.1" 200 23 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/ HTTP/1.1" 207 569 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "HEAD /git/repo.git/info/refs HTTP/1.1" 200 - "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "HEAD /git/repo.git/objects/info/packs HTTP/1.1" 200 - "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MKCOL /git/repo.git/info/ HTTP/1.1" 405 336 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "LOCK /git/repo.git/info/refs HTTP/1.1" 200 475 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "GET /git/repo.git/objects/info/packs HTTP/1.1" 200 1 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/ HTTP/1.1" 207 2608 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/heads/ HTTP/1.1" 207 941 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/tags/ HTTP/1.1" 207 940 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MKCOL /git/repo.git/refs/ HTTP/1.1" 405 336 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MKCOL /git/repo.git/refs/heads/ HTTP/1.1" 405 342 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "LOCK /git/repo.git/refs/heads/master HTTP/1.1" 200 475 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/objects/a2/ HTTP/1.1" 404 317 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/objects/2c/ HTTP/1.1" 207 4565 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/objects/d8/ HTTP/1.1" 207 4565 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PUT /git/repo.git/objects/d8/1cc0710eb6cf9efd5b920a8453e1e07157b6cd_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 201 373 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MKCOL /git/repo.git/objects/a2/ HTTP/1.1" 201 296 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PUT /git/repo.git/objects/2c/186ad49fa24695512df5e41cb5e6f2d33c119b_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 201 373 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MOVE /git/repo.git/objects/d8/1cc0710eb6cf9efd5b920a8453e1e07157b6cd_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 502 341 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MOVE /git/repo.git/objects/2c/186ad49fa24695512df5e41cb5e6f2d33c119b_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 502 341 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PUT /git/repo.git/objects/a2/aadb1772e12104ce358f7ff9a11db5d93ead7d_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 201 373 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "MOVE /git/repo.git/objects/a2/aadb1772e12104ce358f7ff9a11db5d93ead7d_20ca3a58daa09e54112968cbd4e86580b6301074 HTTP/1.1" 502 341 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "UNLOCK /git/repo.git/refs/heads/master HTTP/1.1" 204 - "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/ HTTP/1.1" 207 2608 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/heads/ HTTP/1.1" 207 941 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "PROPFIND /git/repo.git/refs/tags/ HTTP/1.1" 207 940 "-" "git/1.7.11.4" my.ip - - [21/Sep/2012:16:19:49 +0200] "UNLOCK /git/repo.git/info/refs HTTP/1.1" 204 - "-" "git/1.7.11.4" I have tried many configurations (even smart http from progit), but a major part of them consider the fact that they have a dedicated domain, but I'm in a sub-directory, so I can't apply these examples. Have you got an idea of the problem? have you got solutions? have you got configuration example with non-root directory? For your help, In advance, Thanks.

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• Error cloning gitosis-admin on new setup

  - by michaelmior

  I have the following in my gitosis.conf. (Created via gitsosis-init < id_rsa.pub with the key from my laptop) [gitosis] loglevel = DEBUG [group gitosis-admin] writable = gitosis-admin members = michael@laptop When I try git clone git@SERVER:gitsos-admin.git, I get the following errors: Initialized empty Git repository in /home/michael/gitsos-admin/.git/ DEBUG:gitosis.serve.main:Got command "git-upload-pack 'gitsos-admin.git'" DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'writable' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'writeable' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'readonly' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' ERROR:gitosis.serve.main:Repository read access denied fatal: The remote end hung up unexpectedly I know my key is being accepted because I have tried logging in via SSH and although a terminal won't be allocated, the authorization works.

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• Error 2013: Lost connection to MySQL server during query when executing CHECK TABLE FOR UPGRADE

  - by Dean Richardson

  I just upgraded Ubuntu from 11.10 to 12.04. My rails app now returns the (passenger) error "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) (Mysql2::Error)". I get a similar error when I try to access mysql at the command line on my Ubuntu server using mysql -u root -p. I have mysql-server 5.5 installed. I've checked and mysql is not running. When I try to restart it, it fails. Here are some key lines from the tail of /var/log/syslog after an attempted restart: dean@dgwjasonfried:/etc/mysql$ tail -f /var/log/syslog Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: Looking for 'mysqlcheck' as: /usr/bin/mysqlcheck Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost' '--socket=/var/run/mysqld/mysqld.sock' Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost' '--socket=/var/run/mysqld/mysqld.sock' '--host=localhost' '--socket=/var/run/mysqld/mysqld.sock' Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: /usr/bin/mysqlcheck: Got error: 2013: Lost connection to MySQL server during query when executing 'CHECK TABLE ... FOR UPGRADE' Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: FATAL ERROR: Upgrade failed Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: molex_app_development.assets OK Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5107]: molex_app_development.ecd_types OK Mar 7 08:55:27 dgwjasonfried /etc/mysql/debian-start[5124]: Checking for insecure root accounts. Mar 7 08:55:27 dgwjasonfried kernel: [ 7551.769657] init: mysql main process (5064) terminated with status 1 Mar 7 08:55:27 dgwjasonfried kernel: [ 7551.769697] init: mysql respawning too fast, stopped Here is most of /etc/mysql/my.cnf: Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock Here is entries for some specific programs The following values assume you have at least 32M ram This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] Basic Settings user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp lc-messages-dir = /usr/share/mysql skip-external-locking Instead of skip-networking the default is now to listen only on localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 And here are permissions for var/run/mysqld/mysqld.sock: srwxrwxrwx 1 mysql mysql 0 Mar 7 09:18 mysqld.sock I'd be grateful for any suggestions the community might have. I reviewed the related questions here and attempted some of the fixes offered but to no avail. Thanks! Dean Richardson Update: Thanks to quanta's suggestion, I looked at the /var/log/mysql/error.log file. I found error messages relating to pointers, fatal signals, and more stuff that I really couldn't make much sense of. I also found mysql man page references, however. One suggested that I try starting mysqld with the --innodb_force_recovery=# option, then attempt to dump (or drop) the offending/corrupted database or table. I worked through the escalating option levels one-by-one (innodb_force_recovery=1, innodb_force_recovery=2, etc.) This allowed me to successfully run mysql -u root -p from the command line and execute several commands. I was able to run queries on my production database, but any attempt to query, dump, or even drop my development database raised an error and led to me losing the connection to mysql. So I've made progress, but until I'm somehow able to drop or repair my development db I'm still unable to get my app to load. Any further advice or suggestions? Thanks! Dean Update: Right after running sudo mysqld --innodb_force_recover=1 from the command line, the error.log contains this: Right after retrying sudo mysqld --innodb_force_recover=1, The error.log file shows this: 130308 4:55:39 [Note] Plugin 'FEDERATED' is disabled. 130308 4:55:39 InnoDB: The InnoDB memory heap is disabled 130308 4:55:39 InnoDB: Mutexes and rw_locks use GCC atomic builtins 130308 4:55:39 InnoDB: Compressed tables use zlib 1.2.3.4 130308 4:55:39 InnoDB: Initializing buffer pool, size = 128.0M 130308 4:55:39 InnoDB: Completed initialization of buffer pool 130308 4:55:39 InnoDB: highest supported file format is Barracuda. InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 130308 4:55:39 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 130308 4:55:40 InnoDB: Waiting for the background threads to start 130308 4:55:41 InnoDB: 1.1.8 started; log sequence number 10259220 130308 4:55:41 InnoDB: !!! innodb_force_recovery is set to 1 !!! 130308 4:55:41 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306 130308 4:55:41 [Note] - '127.0.0.1' resolves to '127.0.0.1'; 130308 4:55:41 [Note] Server socket created on IP: '127.0.0.1'. 130308 4:55:41 [Note] Event Scheduler: Loaded 0 events 130308 4:55:41 [Note] mysqld: ready for connections. Version: '5.5.29-0ubuntu0.12.04.2' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) Then after mysql -u root -p and mysql> drop database molex_app_development; ERROR 2013 (HY000): Lost connection to MySQL server during query mysql> the error.log contains: dean@dgwjasonfried:/var/log/mysql$ tail -f error.log /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f6a3ff9ecbd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7f6a1c004bd8): is an invalid pointer Connection ID (thread ID): 1 Status: NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 130308 4:55:39 [Note] Plugin 'FEDERATED' is disabled. 130308 4:55:39 InnoDB: The InnoDB memory heap is disabled 130308 4:55:39 InnoDB: Mutexes and rw_locks use GCC atomic builtins 130308 4:55:39 InnoDB: Compressed tables use zlib 1.2.3.4 130308 4:55:39 InnoDB: Initializing buffer pool, size = 128.0M 130308 4:55:39 InnoDB: Completed initialization of buffer pool 130308 4:55:39 InnoDB: highest supported file format is Barracuda. InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 130308 4:55:39 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 130308 4:55:40 InnoDB: Waiting for the background threads to start 130308 4:55:41 InnoDB: 1.1.8 started; log sequence number 10259220 130308 4:55:41 InnoDB: !!! innodb_force_recovery is set to 1 !!! 130308 4:55:41 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306 130308 4:55:41 [Note] - '127.0.0.1' resolves to '127.0.0.1'; 130308 4:55:41 [Note] Server socket created on IP: '127.0.0.1'. 130308 4:55:41 [Note] Event Scheduler: Loaded 0 events 130308 4:55:41 [Note] mysqld: ready for connections. Version: '5.5.29-0ubuntu0.12.04.2' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 130308 4:58:23 [ERROR] Incorrect definition of table mysql.proc: expected column 'comment' at position 15 to have type text, found type char(64). 130308 4:58:23 InnoDB: Assertion failure in thread 140168992810752 in file fsp0fsp.c line 3639 InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. 10:58:23 UTC - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=1 max_threads=151 thread_count=1 connection_count=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 346681 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7f7ba4f6c2f0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 7f7ba3065e60 thread_stack 0x30000 mysqld(my_print_stacktrace+0x29)[0x7f7ba3609039] mysqld(handle_fatal_signal+0x483)[0x7f7ba34cf9c3] /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7f7ba2220cb0] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35)[0x7f7ba188c425] /lib/x86_64-linux-gnu/libc.so.6(abort+0x17b)[0x7f7ba188fb8b] mysqld(+0x65e0fc)[0x7f7ba37160fc] mysqld(+0x602be6)[0x7f7ba36babe6] mysqld(+0x635006)[0x7f7ba36ed006] mysqld(+0x5d7072)[0x7f7ba368f072] mysqld(+0x5d7b9c)[0x7f7ba368fb9c] mysqld(+0x6a3348)[0x7f7ba375b348] mysqld(+0x6a3887)[0x7f7ba375b887] mysqld(+0x5c6a86)[0x7f7ba367ea86] mysqld(+0x5ae3a7)[0x7f7ba36663a7] mysqld(_Z15ha_delete_tableP3THDP10handlertonPKcS4_S4_b+0x16d)[0x7f7ba34d3ffd] mysqld(_Z23mysql_rm_table_no_locksP3THDP10TABLE_LISTbbbb+0x568)[0x7f7ba3417f78] mysqld(_Z11mysql_rm_dbP3THDPcbb+0x8aa)[0x7f7ba339780a] mysqld(_Z21mysql_execute_commandP3THD+0x394c)[0x7f7ba33b886c] mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x10f)[0x7f7ba33bb28f] mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1380)[0x7f7ba33bc6e0] mysqld(_Z24do_handle_one_connectionP3THD+0x1bd)[0x7f7ba346119d] mysqld(handle_one_connection+0x50)[0x7f7ba3461200] /lib/x86_64-linux-gnu/libpthread.so.0(+0x7e9a)[0x7f7ba2218e9a] /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f7ba1949cbd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7f7b7c004b60): is an invalid pointer Connection ID (thread ID): 1 Status: NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. --Dean

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• To install Markdown's extensions by Python

  - by Masi

  The installation notes (git://gitorious.org/python-markdown/mainline.git) say in the file using_as_module.txt One of the parameters that you can pass is a list of Extensions. Extensions must be available as python modules either within the markdown.extensions package or on your PYTHONPATH with names starting with mdx_, followed by the name of the extension. Thus, extensions=['footnotes'] will first look for the module markdown.extensions.footnotes, then a module named mdx_footnotes. See the documentation specific to the extension you are using for help in specifying configuration settings for that extension. I put the folder "extensions" to ~/bin/python/ such that my PYTHONPATH is the following export PYTHONPATH=/Users/masi/bin/python/:/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ The instructions say that I need to import the addons such that import markdown import <module-name> However, I cannot see any module in my Python. This suggests me that the extensions are not available as "python modules - - on [my] PYTHONPATH with names starting with mdx_ - -." How can you get Markdown's extensions to work? 2nd attempt I run at ~/bin/markdown git clone git://gitorious.org/python-markdown/mainline.git python-markdown cd python-markdown python setup.py install I put the folder /Users/masi/bin/markdown/python-markdown/build to my PATH because the installation message suggests me that is the new location of the extensions. I have the following in a test markdown -document [TOC] -- headings here with # -format --- However, I do not get the table of contents. This suggests me that we need to somehow activate the extensions when we compile by the markdown.py -script. **The problem returns to my first quoted text which I is rather confusing to me.

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• Cygwin - Repo with Separate Git/Working Dir Doesn't Work

  - by Kyle Lacy

  Since I've switched to OS X and Vim, I've found it easiest to manage all of my 'dotfiles' (all of my configuration files and miscellaneous scripts) with Git. Having already set up my dotfiles in a repo following this tutorial, I figured it would also be easy enough to migrate all of my settings into my Cygwin setup on my Windows partition. Already having the repo setup on Github, I simply clone'd the repo, and moved all of the files over to my home directory, making it a mirror of my OS X home directory. Unfortunately, I cannot seem to use the actual repo any further within Cygwin. The problem is that I cannot use my dotfiles repo with git within Cygwin. The setup is unique from most normal git repos, in that the working directory and the git directory are in different locations. Specifically, the working directory is $HOME (/Users/kyle on OS X, /home/kyle in Cygwin), and the git repo is $HOME/.dotfiles.git. So, if I wanted to get the status of the repo, for example, I would type the following command (which I alias to reduce typing, of course): git --work-tree=$HOME --git-dir=$HOME/.dotfiles.git status -uno While this works fine on OS X, this refuses to work within Cygwin. Regardless of whether or not I use my alias, or whether or not I substitute $HOME by hand, I get the following git error: fatal: Not a git repository: /home/Kyle/dotfiles/.git/modules/.build/git I don't understand where this error comes from, but the path /home/Kyle/dotfiles was the original location of the git repo when I initially cloned it. Additionally, it's important to note that the repo relies heavily on submodules. If specifics are necessary, the repo in question can be found on GitHub. The commands I ran to setup the repo in Cygwin can also be found within the Readme file.

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• Recovering a VHD after resizing it using VBoxManage

  - by tjrobinson

  I am using VirtualBox 4.1.18 and had a virtual machine running Windows 8 RC with a single VHD, which was initially sized at 25GB (too small!). After installing the OS and some applications I ran out of disk space so shut down the guest and then used this command to resize the VHD to 80GB: C:\Program Files\Oracle\VirtualBox> .\VBoxManage.exe modifyhd "D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vhd" --resize 81920 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% C:\Program Files\Oracle\VirtualBox> .\VBoxManage.exe showhdinfo "D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vhd" UUID: 03fb26e7-d8bb-49b5-8cc2-1dc350750e64 Accessible: yes Logical size: 81920 MBytes Current size on disk: 24954 MBytes Type: normal (base) Storage format: VHD Format variant: dynamic default In use by VMs: Windows 8 RC (UUID: a6e6aa57-2d3a-421b-8042-7aae566e3e0b) Location: D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vhd So far so good. However, when I started the guest up again I got the dreaded: Fatal: No bootable medium found! system halted If I boot into GParted it shows a single 80GB drive as "unallocated". The option to scan for and attempt to repair a filesystem doesn't find anything. I also tried cloning the VHD into a VDI file, just in case that magically fixed it: C:\Program Files\Oracle\VirtualBox> .\VBoxManage.exe clonehd "D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vhd" "D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vdi" --format VDI 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% Clone hard disk created in format 'VDI'. UUID: baf0c2c4-362f-4f6c-846a-37bb1ffc027b C:\Program Files\Oracle\VirtualBox> .\VBoxManage.exe showhdinfo "D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vdi" UUID: baf0c2c4-362f-4f6c-846a-37bb1ffc027b Accessible: yes Logical size: 81920 MBytes Current size on disk: 24798 MBytes Type: normal (base) Storage format: VDI Format variant: dynamic default In use by VMs: Windows 8 RC (UUID: a6e6aa57-2d3a-421b-8042-7aae566e3e0b) Location: D:\VirtualBox VMs\Windows 8 RC\Windows 8 RC.vdi Is there anything else I could try to recover the drive? No, I don't have a backup :( My host OS is Windows 7 64-bit.

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• Virtual Machines Renaming/Backing up/Sharing

  - by evan

  I've started using VMware virtual machines for all of my software development projects and have a few questions for others doing the same thing. First, how can you rename the virtual machine and the name of the virtual hard drive? I have a base development machine that I clone for different projects. I'd like to name the machine and it's hard drive according the the project (right now when I copy them via cut and paste, the file names remain the same and I can only organize them by putting them in a specific directory). Second, what is the best way to back up a virtual machine? Is it possible (by breaking the virtual hard drive up into chunks instead of one big file) to get incremental backups working? It seems time machine always tries to make a copy of the whole thing which is time consuming because each virtual machine is around 30GB. Finally, how slow would it be to have a virtual machine shared on an NFS mount on a wireless N network and used from multiple computers (but with only one person using it at a time.) Would it be more reasonable on a gigabit lan connection? Thanks for your input! And please feel free to share any advice or wisdom about using virtual machines for software development and the best ways to speed them up!

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• Slow VM on esxi 4.1

  - by user57432

  We have a FreeBSD 64bit running on a esxi 4.1, the hardware platform is a DELL R710 with 2 x 56xx (intel 6core cpu) and 48 GB ram. The FreeBSD vm is very slow, when we compiles/builds something on it, it takes 5 minuts and it says "build time 18 seconds.". There's no vmtools installed on the vm. The same vm is installaed on another R710 running esxi 4.0 for dell and there's no problems with that one. Does anyone have any idea about what to look for? the VMs on the second server (ESXi 4.1) is a clone of the VMs running on the first VMserver (ESXi 4.0 Dell edition). It's not possible for me to move the VM back to the first server since the file contaning the vm is too big. We installed the new esxi with a datasore with 8mb blocks because 1mb blocks dident allow for the file size we needed. It looks like the www server on the new ESXi 4.1 works fine, but I havent really tested it. There's not installed vmtools on any of the VMs (FreeBSD). The block size on the second VM (ESXi 4.1) datastorage is 8mb and 1mb on the first (ESXi 4.0)

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• How to access programs in one PC using another PC

  - by darkstar13

  Hi, I was recently given an old PC for my remote access at work. The CPU that comes with it has Windows XP installed, 400+ MB of ram, all USB devices disabled. I access my work applications using VPN / Citrix. Basically, it' sooooo slow. Plus it's bulky and it will just occupy space, so I am now hoping to find a way for me to integrate this work PC with my home PC. I tried to put in the hard drive in my home PC CPU, and set the drive as slave. However, when I booted my PC from this hard drive, I am stuck at the screen where windows is prompting me to select how am I going to boot (ex. Safe Mode, Safe mode with command prompt, Last Working Configuration, etc), but whatever option I select, I am still stuck at this option after reboot. I am thinking if maybe I can clone the drive and mount the cloned drive and access the system as a virtual machine. But I don't know if that will work. I would like to know if there's something I can do so I can work at home using my home PC, where I can access my work programs to connect to VPN / Citrix. My home PC's OS is Windows 7 Ultimate x64.

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• BOOTMGR is compressed

  - by JavaAndCSharp

  So I've just finished messing up my computer beyond repair. I originally had a Windows 7 install on my 64GB SSD and all my data on my 1.5TB HDD. So I decided to install Windows 8 Consumer Preview. I tried to clone my 64GB SSD onto my HDD; but that didn't work either at first. I later learned that it wiped all my data off of it. Thank goodness for the cloud. So I retried the cloning after I realized that my data was gone, and I finished it. So I rebooted and got a cryptic error message: BOOTMGR is compressed. Press Ctrl+Alt+Del to restart. So I did. Several times. I followed the instructions to rebuild the bootmanager from many websites, including HowToGeek, smallvoid.com, and more. None worked. BTW, I've lost my Windows 7 Professional DVDs. All I have is my Windows 7 Home Premium DVD. It's the one I got with my laptop. How can I get back to a working computer? I'm willing to wipe anything, as my data is all in the cloud.

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• 0x0000007b WinXP in VirtualBox with no Admin access on source drive

  - by Ozzah

  I have a physical drive with an installation of WinXP-32 which I have made a clone of using SysInternals disk2vhd. I have no admin rights on this installation. I have tried to boot this VHD in VirtualBox, however it blue screens on 0x0000007b. I have researched this and apparently the cause is that Windows doesn't like the IDE controller changing. I have tried all the available controllers in VirtualBox, but they all produce the same result. There is a Microsoft KB article which describes a method involving loading a .reg file and extracting some sys files from a CAB. This method apparently works well for many people with this problem, however it will not work for me as I don't have admin rights on the WinXP installation. Is there anything I can do in this case? Is there any way of loading the .reg file outside the OS? or perhaps doing a repair using the WinXP CD? Even though I have no admin rights on the source drive installation of Windows, I do obviously have full access to the file system directly on the drive and also in the VHD itself.

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• MediaWiki Math Extension Out of Sync

  - by kfmfe04

  I am trying to run MediaWiki 1.19.2 on Ubuntu Linux (3.0.0-26-generic #42-Ubuntu AMD 64). It installs fine via tar.gz, however, I run into problems when trying to install the Math extension (via git clone from its repository). I get the following error in the Apache logs: PHP Fatal error: Call to undefined method FSFileBackend::getRootStoragePath() in /var/www/abc.com/html/mediawiki-1.19.2/extensions/Math/Math.body.php on line 361, referer: http://intra.abc.com/wiki/index.php?title=Quality&action=submit so apparently, the latest Math extension is out-of-sync with MediaWiki 1.19.2; the latest Math extension is apparently using post-1.19.2 methods. I tried looking through the git logs for some indication (a tag, perhaps?) of which revision of Math worked with 1.19.2, but no luck. Anyone have any suggestions? Thanks in advance. Edit: Just my luck - after posting this message, I found this link. I think this version should do the job. Consider this question closed/answered.

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• Migrate installation from one HDD to another?

  - by dougoftheabaci

  I have a server with a 64 GB SSD inside. It runs just fine, but occasionally there's a hiccup that causes it to nearly fill up. When that happens my server starts to lockup and generally misbehave. I'm looking to buy a bigger SSD (either 128 GB or 256 GB) but I'm a bit unsure of how best to make the transition. For a start, I don't have an external monitor. If I need one I'll have to borrow it from work. Most of the time I just SSH into the server from my iMac. The only solution I can think of would be to buy two FW800 2.5" cases, boot from the 64 GB SSD and clone it to the 128 GB SSD. Seem a bit excessive but it might be my best option. I do have more than one SATA port on my server, but they're all currently being use for storage drives. They don't mount by default, so I could unplug them and just have the two SSDs and do the whole thing via SSH. This is another option I'm considering. My main concern with either is how best to make sure everything goes across. I want a carbon copy of the first one onto the second. This is especially important because I have a ZFS volume (my storage) and I'm a bit unfamiliar with how to move everything across. I could just start fresh and reinstall everything on the SSD, but that seems like extra trouble I don't need. So any advice on how best to achieve my goals would be appreciated. Thanks! Server is running Ubuntu Server 12.04. The iMac has 10.8.1.

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• Migrate Windows Server 2008 to a new hard disk 2

  - by MainMa

  Hi, A few weeks ago, I already asked how to move a Windows Server 2008 to a new hard disk. Despite the previous answers and two weeks lost trying to do it, I am always unable to move the OS to the new drive. What I tried: A backup/restore using Windows Backup. This never helped. First, I tried to backup, then copy the backup to a new drive, then restore. This results in "The parameter is incorrect. (0x80070057)" error caused by a bug in Windows Backup. Recently, I attempted to backup to a network share, but I can't restore from it, because of a "*The network path was not found. (0x80070035)" error. Trying the netsh interface ipv4 set address [...] does not work neither (saw at least three different errors, mostly "The interface is unknown.") A previously suggested solution using imagex from Windows AIK results in a non-bootable disk after writing an image to it. When booting from Windows 2008 installation disk (from USB), it finds that the HDD is not bootable and proposes to fix this, but then crashes, resulting in an unbootable USB flash disk (and HDD stays unbootable). As I said in my previous question, doing a clone of a hard disk drive gives an (of course) bootable disk, but Windows complain about hardware changes and cannot start. Now can somebody suggest me another way to move Windows Server 2008 to a new hard disk? Is it at least possible to do, or any hard disk failure/change implements necessarily to reinstall the whole OS?

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• mcelog doesn't fails to start PUIAS 6.4 amd hardware

  - by Predrag Punosevac

  Folks, I am a total Linux n00b. I am trying to deploy mcelog on one of my computing nodes running PUIAS 6.4 (i86_64) [root@lov3 edac]# uname -a Linux lov3.mylab.org 2.6.32-358.18.1.el6.x86_64 #1 SMP Tue Aug 27 22:40:32 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux a free clone of Red Hat 6.4 on AMD hardware [root@lov3 mcelog]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 64 On-line CPU(s) list: 0-63 Thread(s) per core: 2 Core(s) per socket: 8 Socket(s): 4 NUMA node(s): 8 Vendor ID: AuthenticAMD CPU family: 21 Model: 2 Stepping: 0 CPU MHz: 1400.000 BogoMIPS: 4999.30 Virtualization: AMD-V L1d cache: 16K L1i cache: 64K L2 cache: 2048K L3 cache: 6144K NUMA node0 CPU(s): 0-7 NUMA node1 CPU(s): 8-15 NUMA node2 CPU(s): 16-23 NUMA node3 CPU(s): 24-31 NUMA node4 CPU(s): 32-39 NUMA node5 CPU(s): 40-47 NUMA node6 CPU(s): 48-55 NUMA node7 CPU(s): 56-63 My mcelog.conf file is more or less default apart of the fact that I would like to run mcelog as a daemon and to log errors. When I start mcelog [root@lov3 mcelog]# mcelog --config-file mcelog.conf AMD Processor family 21: Please load edac_mce_amd module. However the module is present [root@lov3 mcelog]# locate edac_mce_amd.ko /lib/modules/2.6.32-358.18.1.el6.x86_64/kernel/drivers/edac/edac_mce_amd.ko /lib/modules/2.6.32-358.el6.x86_64/kernel/drivers/edac/edac_mce_amd.ko and loaded [root@lov3 edac]# lsmod | grep mce edac_mce_amd 14705 1 amd64_edac_mod Is there anything that I can do to get mcelog working? The only reference I found is this thread http://lists.centos.org/pipermail/centos/2012-November/130226.html

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• ghettoVCB issue

  - by romgo75

  I have setup a ghettoVCB script in order to backup three VM. I put it in a crontab but I have an issue. In my backup folder I have 3 different folders, one for each VM. In each folder I have the following files: -rw-r--r-- 1 root root 1263 Mar 17 01:51 vm1-2010-03-16--2.gz -rw-r--r-- 1 root root 1263 Mar 17 00:41 vm1-2010-03-16--3.gz -rw-r--r-- 1 root root 1261 Mar 18 01:22 vm1-2010-03-17--1.gz drwxr-xr-x 1 root root 980 Mar 19 23:39 vm1-2010-03-19 The problem is the last folder. It seems that a backup didn't finish the process. When I read the logs concerning this folder I get: 2010-03-19 23:00:01 -- info: CONFIG - VM_BACKUP_VOLUME = /vmfs/volumes/datastore1/backup/ 2010-03-19 23:00:01 -- info: CONFIG - VM_BACKUP_ROTATION_COUNT = 3 2010-03-19 23:00:01 -- info: CONFIG - DISK_BACKUP_FORMAT = zeroedthick 2010-03-19 23:00:01 -- info: CONFIG - ADAPTER_FORMAT = buslogic 2010-03-19 23:00:01 -- info: CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = 0 2010-03-19 23:00:01 -- info: CONFIG - ENABLE_HARD_POWER_OFF = 0 2010-03-19 23:00:01 -- info: CONFIG - ITER_TO_WAIT_SHUTDOWN = 3 2010-03-19 23:00:01 -- info: CONFIG - POWER_DOWN_TIMEOUT = 5 2010-03-19 23:00:01 -- info: CONFIG - SNAPSHOT_TIMEOUT = 15 2010-03-19 23:00:01 -- info: CONFIG - LOG_LEVEL = info 2010-03-19 23:00:01 -- info: CONFIG - BACKUP_LOG_OUTPUT = stdout 2010-03-19 23:00:01 -- info: CONFIG - VM_SNAPSHOT_MEMORY = 0 2010-03-19 23:00:01 -- info: CONFIG - VM_SNAPSHOT_QUIESCE = 0 2010-03-19 23:00:01 -- info: CONFIG - VMDK_FILES_TO_BACKUP = all http://... 2010-03-19 23:39:35 -- info: Initiate backup for vm1 2010-03-19 23:39:35 -- info: Creating Snapshot "ghettoVCB-snapshot-2010-03-19" for vm1 Destination disk format: VMFS zeroedthick Cloning disk '/vmfs/volumes/datastore1/vm1/vm1_1.vmdk'... ^MClone: 0% done.^MClone: 1% done.^MClone: 2% done.^MClone: 3% done.^MClone: 4% done.^MClone: 5% done.^MClone: 6% done.^MClone: 7% done.^MClone: 8% done.^MClone: 9% done.^MClone Failed to clone disk : The file already exists (39). Destination disk format: VMFS zeroedthick Cloning disk '/vmfs/volumes/datastore1/vm1/vm1.vmdk'... 2010-03-20 00:46:20 -- info: Removing snapshot from vm1 ... one: 7% done.^MClone: 8% done.^MClone: 9% done.^MClone: 10% done.^MClone: 11% done.^MClone: 12% done.^MClone: 13% done.^MClone: 14% done.^MClone: 15% done.^MClone: 16% done.^MCl 2010-03-19 23:51:19 -- info: Removing snapshot from vm1 ... I can't run ghettoVCB anymore because the VM has a snapshot which has not been deleted. I know how to delete the snapshot, but I don't know why the VCB script is not able to handle rotation of the VM backups? Any ideas? Thanks!

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• Favorite tricks with linux kernel boot parameters?

  - by ~drpaulbrewer

  Most linux bootloaders let you edit the kernel boot command line before booting. There are often lots of parameters available -- Knoppix, for instance, has a list on their Knoppix Cheat Codes page -- but most are applicable only to compatibility and special situations. A few are hidden gems. Common usages of these codes are to boot to single-user mode, alter screen mode or drivers, or to specify an alternative root directory. Other more exotic uses are possible. Some linux distributions let you copy the boot cd into ram. Others (e.g., Ubuntu) let you use preseed files to clone installs when setting up multiple systems -- useful when installing a lab full of computers without having to baby sit each install. What other tricks have you found useful in system installs, repairs, backups, restores, establishing temporary servers, or other tasks? To add your favorite trick to the list: As much of the code for these options goes on either in initrd, or in a service handler that detects the kernel parameters, please list *(1) the kernel boot line parameter, (2) what it does, (3) the linux distribution and any required packages to activate the feature*. Thanks.

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