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• Recover LVM2 volume group after one HDD failed

  - by Bernd

  I had two HDDs, each one containing a LVM partition which formed a volume group. Then I had two LVs, one for my / directory and one for my /home/ directory. Yesterday where I had my / dir failed. I'm trying to recover at least my /home/ dir. What I've done so far: Boot a live system Extract LVM2 metadata from the working HDD using dd Copy metadata to /etc/lvm/backup/vg0 Now I'm trying to do this: pvcreate --restore /etc/lvm/backup/vg0 --uuid "[uuid of my working hdd]" /dev/sdb2 But I always get: Couldn't find device with uuid '[uuid of broken hdd]'. Couldn't find device with uuid '[uuid of working hdd]'. Device /dev/sdb2 not found (or ignored by filtering). I confirmed that /dev/sdb2 exists and I've commented out all filtering settings from /etc/lvm/lvm.conf so I don't know what might be causing pvcreate not to find the device. So: What might be the problem? Is it even possible to restore this partition? (As I'm writing this I'm starting to think it's impossible D:) Edit: Okay, looks like I've got it figured out. I was using a Ubuntu 8.10 CD (yeah, I know it's not supported anymore) and it seems that was the problem. When I started from a Ubuntu 10.04 CD everything worked 'fine', I could mount my LVM partitions partially without problems. (Will answer the question in 4 hours. But if anyone has still got some hints/tips, please share! :)

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• Shrink a Volume Group in LVM / Linux in order to install Windows on the freed space

  - by Stephan Kristyn

  I have a Volume Group with Unused space. This 40Gig should become an entidy in order to install Microsoft windows 7 on it. I do not have extra space on the drive - that is why I want to shrink the VG! LVG berta resides on sda2 and consists of lv_root lv_swap unused_space I want it to become lv_root lv_swap and have a seperate entidy made out of unused_space. Microsoft Windows 7 has to get installed on this entidy. I do not understand why Linux made simple things complicated. I utterly hate LVM and think its absolute bollocks. Useful Sources: http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-system-config-lvm.html Edit: I found the answer. The necessary steps depict how complicated LVM really is. In my opinion it is best to avoiding LVM until pvresize matures as promised in its man pages. Answer: http://fedorasolved.org/Members/zcat/shrink-lvm-for-new-partition If you run into problems when you want to remove lvswap even if in resuce mode, then try swapoff /dev/vg_1/lv_swap lvchange -an /dev/vg_1/lv_swap

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• Sudoers file allow sudo on specific file for active directory group

  - by tubaguy50035

  I have active directory sign in working on an Ubuntu 12.04 box. When the user signs in, I have a script that runs that needs sudo permission (since it modifies the samba config file). How would I specify this in my sudoer's file? I've tried: %DOMAIN\\AD+Programmers ALL=NOPASSWD: /usr/local/bin/createSambaShare.php I've found various resources on the internet stating that this is how it would be done, but I'm not sure that I have the first part right. What are they using as the DOMAIN? The workgroup or the realm? I use Samba + winbind for active directory integration. Here's my smb.conf: [global] security = ads netbios name = hostname realm = COMPANYNAME.COM password server = passwordserver workgroup = COMPANYNAME idmap uid = 1000-10000 idmap gid = 1000-10000 winbind separator = + winbind enum users = no winbind enum groups = no winbind use default domain = yes template homedir = /home/%D/%U template shell = /bin/bash client use spnego = yes domain master = no EDIT: The users that should have access to run that script are all part of the Programmers group which has an Active Directory Domain Services Folder of Company.com/Staff/Security Groups (not sure if that matters or not).

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• SSH does not allow the use of a key with group readable permissions

  - by scjr

  I have a development git server that deploys to a live server when the live branch is pushed to. Every user has their own login and therefore the post-receive hook which does the live deployment is run under their own user. Because I don't want to have to maintain the users public keys as authorized keys on the remote live server I have made up a set of keys that 'belong's to the git system to add to remote live servers (In the post-receive hook I am using $GIT_SSH to set the private key with the -i option). My problem is that because of all the users might want to deploy to live, the git system's private key has to be at least group readable and SSH really doesn't like this. Here's a sample of the error: XXXX@XXXX /srv/git/identity % ssh -i id_rsa XXXXX@XXXXX @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0640 for 'id_rsa' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. bad permissions: ignore key: id_rsa I've looked around expecting to find something in the way of forcing ssh to just go through with the connection but I've found nothing but people blindly saying that you just shouldn't allow access to anything but a single user.

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• How to secure a group of Amazon EC2 instances

  - by ks78

  I have several Amazon EC2 instances running Ubuntu 10.04 and I've recently started using Amazon's Route 53 as my DNS. The purpose of doing that was to allow the instances to refer to each other by name rather than private IP (which can change). I've pointed my domain name (via GoDaddy) to Amazon's name servers, allowing me to access my EC2 webservers. However, I noticed I can now access the EC2 instances which I don't want to be public, such as the dedicated MySQL Server. I was thinking Amazon's Security Groups would still be in effect when using Route 53, but that doesn't seem to be the case. Before I started using Route 53, I was thinking of having one instance run a reverse proxy, which would help protect the web servers behind it. Then IP-restrict all the other instances. I know IP restricting can be done using the firewall within each instance, but should I ever need to access them from another IP address, I'd need a way in. Amazon's control panel made it a breeze to open a port when necessary. Does anyone have any suggestions for keeping EC2 instances secure, but also accessible to their administrator? Also, what's the best topology for a group of EC2 instances, consisting of web servers and a dedicated database server, from a security perspective? Does having a reverse proxy server even make sense?

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• Limit access on Apache 2.4 to ldap group

  - by jakobbg

  I've upgraded from Ubuntu 12.04 LTS to 14.04 LTS, and suddenly, my Apache 2.4 (previous: Apache 2.2) now lets everybody in to my virtual host, which is unfortunate :-). What am I doing wrong? Anything with the Order/Allow lines? Any help is greatly appreciated! Here's my current config; <VirtualHost *:443> DavLockDB /etc/apache2/var/DavLock ServerAdmin [email protected] ServerName foo.mydomain.com DocumentRoot /srv/www/foo Include ssl-vhosts.conf <Directory /srv/www/foo> Order allow,deny Allow from all Dav On Options FollowSymLinks Indexes AllowOverride None AuthBasicProvider ldap AuthType Basic AuthName "Domain foo" AuthLDAPURL "ldap://localhost:389/dc=mydomain,dc=com?uid" NONE AuthLDAPBindDN "cn=searchUser, dc=mydomain, dc=com" AuthLDAPBindPassword "ThisIsThePwd" require ldap-group cn=users,dc=mydomain,dc=com <FilesMatch '^\.[Dd][Ss]_[Ss]'> Order allow,deny Deny from all </FilesMatch> <FilesMatch '\.[Dd][Bb]'> Order allow,deny Deny from all </FilesMatch> </Directory> ErrorLog /var/log/apache2/error-foo.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access-foo.log combined </VirtualHost>

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• Design: classes with same implementation but different method names

  - by Dror Helper

  I have multiple classes that have similar implementation for different named methods: class MyClassX { public int MyClassXIntMethod(){} public string MyClassXStringMethod(){} } class MyClassY { public int MyClassYIntMethod(){} public string MyClassYStringMethod(){} } the methods inside the classes have similar implementation but because the method's names are different (due to 3rd party constraints) i cannot use inheritance. I'm looking for an elegant solution that would be better than implementing the same functionality over and over again.

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• Proper Method name for XML builder

  - by Wesley

  I think this is the right stack for this. I have a helper class which builds CAML queries (SharePoint XML for getting list items from SQL) There is one method that is flexibly used to build the queries that get all related votes and comments for a social item. I don't want to call it BuildVoteorCommentXML or something long winded like that. Is there a good naming convention for getting all Join/Foreign Key objects from a core object?

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• MatheMagics - Guess My Age Method 1

  - by PointsToShare

  © 2011 By: Dov Trietsch. All rights reserved MatheMagic – Guess My Age – Method 1 The Mathemagician stands on the stage and asks an adult to do the following: ·         Do the next few steps on your calculator, or the calculator in your phone, or even on a piece of paper. ·         Do it silently! Don’t tell me the results until I ask for them directly ·         Compute a single digit multiple of 9 – any one of 9, 18, 27, … all the way to 81, will do. ·         Now multiply your age by 10 ·         Subtract the 9 multiple from this number. ·         Tell me the result. Notice that I don’t know which multiple of 9 you subtracted from 10 times your age. I will nonetheless immediately tell you what your age is. How do I do this? Let’s do the algebra. 10X – 9Y = 10X – 10Y + Y = 10(X – Y) + Y Now remember, you asked an adult, so his/her age is a two digit number (maybe even 3 digits), thus reducing it by the single digit multiplied by nine is still positive – the lowest is can be is 100 – 81 which yields 19. Now make two numbers out of the result. The last digit and the number before it. This number is X – Y or the age minus the single digit you selected. The last digit is this very single digit. This is always so regardless of the digit you selected. So… Add tis digit to the other number and you get back the age! Q.E.D Example: I am 76 years old and here is what happens when I do the steps 76 x 10 = 760 760 – 18 = 742 made of 74 and 2. My age is 74 + 2 760 – 81 = 679 made of 67 and 9. My age is 67 + 9 A note to the socially aware mathemagician – it is safer to do it with a man. The chances of a veracious answer are much, much higher! The trick may be accomplished on any 2 or 3 digit number, not just one’s age, but if you want to know your date’s age, it’s a good way to elicit it. That’s All Folks PS for more Ageless “Age” mathemagics go to www.mgsltns.com/games.htm and also here: http://geekswithblogs.net/PointsToShare/archive/2011/11/15/mathemagics---guess-my-age---method-2.aspx

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• Tournament bracket method to put distance between teammates

  - by Fred Thomsen

  I am using a proper binary tree to simulate a tournament bracket. It's preferred any competitors in the bracket that are teammates don't meet each other until the later rounds. What is an efficient method in which I can ensure that teammates in the bracket have as much distance as possible from each other? Are there any other data structures besides a tree that would be better for this purpose? EDIT: There can be more than 2 teams represented in a bracket.

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• Refactor: Sequential Coupling => Template Method

  Another colleague brought me present today - the blog post. Thank you. You were right!We will do some refactoring which will lead us from Anti-Pattern to Pattern. From Sequential Coupling to Template Method. And as I see it could be very common way to refactor bad code that represents mentioned anti

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• IEnumerator.Current property and IEnumerator.MoveNext method

  - by nmarun

  Here’s a question: What happens to the Current property of an IEnumerator before and after the MoveNext() call? When I say ‘after the MoveNext() call’, I mean after MoveNext() returns a false indicating an end of the collection. I was going through the MSDN for IEnumerator.Current and the first paragraph basically boils down to: If MoveNext() method has never been called on an IEnumerator, the Current property is undefined. I wanted to know what ‘undefined’ means – is it null? If so, what if the...(read more)

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• Tried every possible method but couldn't enable compiz?

  - by 9kkmin

  a newbie, installed ubuntu 10.10 about a month ago,over the month i fixed everything from dad playback,to webcam,but couldn't enable compiz anayway,my card is blacklisted, i tried the SKIP_CHECKS=yes,method and even tried ghex editing,but of no avail,now all i get when i run compiz in the terminal is "segmentation fault",the specs of my laptop is intel core i3 2330,and intel hd graphics 3000,has anyone has been able to run compiz on intel hd graphics 3000?

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• How to decide to which class does a method belong

  - by Eleeist

  I have TopicBusiness.class and PostBusiness.class. I have no problem with deciding into which class methods such as addPostToDatabase() or getAllPostsFromDatabase() should go. But what about getAllPostsFromTopic(TopicEntity topic) or getNumberOfPostsInTopic(TopicEntity topic)? Should the parameter be the deciding factor? So when the method takes TopicEntity as parameter it should belong to TopicBusiness.class? I am quite puzzled by this.

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• Coded UI Test Method failed inconsistently

  - by Sunitha M

  The following exception failing my UI automation test. Message: Test method CodedUITestMethod1 throw exception: The playback failed to find the control with the given search properties. Additional Details: TechnologyName: 'UIA' ControlType: 'MenuItem' Name: 'MyViewModel' ---> system.runtime.interopservices.comexception error hresult e_fail has been returned from a call to a COM component please any one give me a solution for these type of exceptions.

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• How can I debug Cometd / Grails 1.2.1 problem?

  - by ?????

  When I add the Cometd plugin to Grails 1.2.1, grail's "jetty" debug environment will no longer start up. I have been unable to debug this, not being familiar enough with the underlying components. (This is a big issue with Grails development in general. While it tries to hide everything from you, pretty soon you have to become an expert with Hibernate, Java 1.6, jetty, etc, in order to debug grails problems) To reproduce, start a grails 1.2.1 project, and install the cometd-grails plugin. When you do a run-app, you'll see: Running Grails application.. 2010-03-20 18:32:28,879 [main] ERROR context.ContextLoader - Context initialization failed org.springframework.beans.factory.access.BootstrapException: Error executing bootstraps; nested exception is org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.NoClassDefFoundError: org/mortbay/util/ajax/JSON$Source at org.codehaus.groovy.grails.web.context.GrailsContextLoader.createWebApplicationContext(GrailsContextLoader.java:74) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:192) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3961) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4456) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:515) at org.apache.catalina.core.StandardServer.start(StandardServer.java:708) at org.apache.catalina.startup.Tomcat.start(Tomcat.java:286) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229) at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121) at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:135) at grails.web.container.EmbeddableServer$start.call(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:129) at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy:158) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSite.invoke(PogoMetaMethodSite.java:225) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:274) at groovy.lang.Closure$call.call(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at groovy.lang.Closure$call.call(Unknown Source) at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:56) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:155) at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokePropertyOrMissing(MetaClassImpl.java:1095) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1051) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:706) at groovy.lang.GroovyObjectSupport.invokeMethod(GroovyObjectSupport.java:44) at groovy.lang.Script.invokeMethod(Script.java:78) at groovy.lang.MetaClassImpl.invokeMethodOnGroovyObject(MetaClassImpl.java:1114) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1011) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:155) at _GrailsRun_groovy$_run_closure5.doCall(_GrailsRun_groovy:149) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at _GrailsRun_groovy$_run_closure5.call(_GrailsRun_groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokePropertyOrMissing(MetaClassImpl.java:1095) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1051) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at _GrailsRun_groovy.runInline(_GrailsRun_groovy:115) at _GrailsRun_groovy.this$4$runInline(_GrailsRun_groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:997) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:163) at _GrailsRun_groovy$_run_closure1.doCall(_GrailsRun_groovy:59) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:292) at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:39) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:54) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8_closure9.doCall(GantBinding.groovy:152) at sun.reflect.GeneratedMethodAccessor77.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8_closure9.doCall(GantBinding.groovy) at sun.reflect.GeneratedMethodAccessor76.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:274) at groovy.lang.Closure$call.call(Unknown Source) at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90) at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy) at sun.reflect.GeneratedMethodAccessor70.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:997) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:706) at groovy.lang.GroovyObjectSupport.invokeMethod(GroovyObjectSupport.java:44) at groovy.lang.MetaClassImpl.invokeMethodOnGroovyObject(MetaClassImpl.java:1114) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1011) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:159) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8.doCall(GantBinding.groovy:152) at sun.reflect.GeneratedMethodAccessor69.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8.doCall(GantBinding.groovy) at sun.reflect.GeneratedMethodAccessor68.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:274) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokePropertyOrMissing(MetaClassImpl.java:1095) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1051) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:706) at groovy.lang.GroovyObjectSupport.invokeMethod(GroovyObjectSupport.java:44) at groovy.lang.Script.invokeMethod(Script.java:78) at groovy.lang.MetaClassImpl.invokeMethodOnGroovyObject(MetaClassImpl.java:1114) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1011) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:147) at RunApp$_run_closure1.doCall(RunApp.groovy:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:292) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149) at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:127) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:39) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:54) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8_closure9.doCall(GantBinding.groovy:152) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8_closure9.doCall(GantBinding.groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.Closure.call(Closure.java:279) at groovy.lang.Closure.call(Closure.java:274) at groovy.lang.Closure$call.call(Unknown Source) at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90) at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:997) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:706) at groovy.lang.GroovyObjectSupport.invokeMethod(GroovyObjectSupport.java:44) at groovy.lang.MetaClassImpl.invokeMethodOnGroovyObject(MetaClassImpl.java:1114) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1011) at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:923) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:159) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8.doCall(GantBinding.groovy:152) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at org.codehaus.gant.GantBinding$_initializeGantBinding_closure4_closure8.doCall(GantBinding.groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native

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• design suggestion for a message decoder in delphi

  - by stanleyxu2005

  Hi All, I want to implement a RPC module. Different requests are encoded as JSON objects. They will be decoded and then be handled by a request handler. At last a corresponding response will be returned. The demo code looks as follows: type IRequestHandler = interface function Handle(const Request: TAaaRequest): TResponse; function Handle(const Request: TBbbRequest): TResponse; end; TDecoder = class class function Decode(const Json: TJsonObject; const RequestHandler: IRequestHandler): TResponse; end; class function TDecoder.Decode(const Json: TJsonObject; const RequestHandler: IRequestHandler): TResponse; var Method: string; Request: TObject; begin Method := Json['method'].AsString; if (Method = TAaaRequest.ClassName) then begin Request := TAaaRequest.FromJSON(Json); // Casted as TObject if Request <> nil then begin Result := RequestHandler.Handle(TAaaRequest(Request)); Request.Free; end; end else if (Method = TBbbRequest.ClassName) then begin Request := TBbbRequest.FromJSON(Json); // Casted as TObject if Request <> nil then begin Result := RequestHandler.Handle(TBbbRequest(Request)); Request.Free; end; end else Result := CreateErrorResponse('Unknown method: ' + Json.ToString); end; According to the code, the handling of different request types are very similar. If I have 100 different request types, I have to copy and paste the above code block 100 times. This is not clever. I am looking for a better way to do the same logic. My imagination is as follows: TDecoder = class private FRequestTypes: TDictionary<string, TClassInfo>; // Does this work? public constructor Create; destructor Destroy; override; function Decode(const Json: TJsonObject; const RequestHandler: IRequestHandler): TResponse; end; constructor TDecoder.Create; begin FRequestTypes := TDictionary<string, TClassInfo>.Create; FRequestTypes.Add(TAaaRequest.ClassName, TAaaRequest); // Does this work? FRequestTypes.Add(TBbbRequest.ClassName, TBbbRequest); end; destructor TDecoder.Destroy; begin FRequestTypes.Free; inherited; end; function TDecoder.Decode(const Json: TJsonObject; const RequestHandler: IRequestHandler): TResponse; var Method: string; Info: TClassInfo; Request: TObject; begin Method := Json['method'].AsString; if FRequestTypes.ContainsKey(Method) then begin // An universal way Info := FRequestTypes[Method]; Request := Info.FromJSON(Json); // Casted as TObject if Request <> nil then begin Result := RequestHandler.Handle(Info(Request)); // Casted to corresponding class type (e.g. TAaaRequest or TBbbRequest) Request.Free; end; end else Result := CreateErrorResponse('Unknown method: ' + Json.ToString); end; I do not know, if I can write an universal way to handle a great number of different request types. Development environment Delphi 2010. Any hint is appreciated.

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• Volume group disappeared, LVs still available

  - by Ben

  I've run into an issue with my KVM host which runs VMs on a LVM volume. As of last night the logical volumes are no longer seen as such (I can't create snapshots of them even though I have been for months now). Running any scans all result in nothing being found: [root@apollo ~]# pvscan No matching physical volumes found [root@apollo ~]# vgscan Reading all physical volumes. This may take a while... No volume groups found root@apollo ~]# lvscan No volume groups found If I try restoring the VG conf backup from /etc/lvm/backups/vg0 I get the following error: [root@apollo ~]# vgcfgrestore -f /etc/lvm/backup/vg0 vg0 Couldn't find device with uuid 20zG25-H8MU-UQPf-u0hD-NftW-ngsC-mG63dt. Cannot restore Volume Group vg0 with 1 PVs marked as missing. Restore failed. /etc/lvm/backups/vg0 has the following for the physical volume: physical_volumes { pv0 { id = "20zG25-H8MU-UQPf-u0hD-NftW-ngsC-mG63dt" device = "/dev/sda5" # Hint only status = ["ALLOCATABLE"] flags = [] dev_size = 4292870143 # 1.99902 Terabytes pe_start = 384 pe_count = 524031 # 1.99902 Terabytes } } fdisk -l /dev/sda shows the following: [root@apollo ~]# fdisk -l /dev/sda Disk /dev/sda: 6000.1 GB, 6000069312512 bytes 64 heads, 32 sectors/track, 5722112 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000188b7 Device Boot Start End Blocks Id System /dev/sda1 2 32768 33553408 82 Linux swap / Solaris /dev/sda2 32769 33280 524288 83 Linux /dev/sda3 33281 1081856 1073741824 83 Linux /dev/sda4 1081857 3177984 2146435072 85 Linux extended /dev/sda5 1081857 3177984 2146435071+ 8e Linux LVM The server is running a 4 disk HW RAID10 which seems perfectly healthy according to megacli and smartd. The only odd message in /var/log/messages is the following which shows up every couple of hours: Jun 10 09:41:57 apollo udevd[527]: failed to create queue file: No space left on device Output of df -h [root@apollo ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 1016G 119G 847G 13% / /dev/sda2 508M 67M 416M 14% /boot Does anyone have any ideas what to do next? The VMs are all running fine at the moment apart from not being able to snapshot them. Updated with extra info It's not a lack of inodes: [root@apollo ~]# df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/sda3 67108864 48066 67060798 1% / /dev/sda2 32768 47 32721 1% /boot pvs, vgs & lvs either output nothing or "No volume groups found".

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• SFTP (or similar) server automated setup for group spaces

  - by spikeheap

  I need to build a dedicated machine which will be used to allow our clients to upload and download files in a secure manner. Each client has multiple users, and I would rather not hand out generic client users which are used by multiple people. Each client should have access to their files only, and no others. There is no use-case (yet) for multiple clients interacting with a single file or space. Is there an existing solution to automating the creation and maintenance of these accounts, preferably with a view to integration with LDAP? Currently it looks like if we want to use SFTP with chrooted spaces they will need to be set up manually (or an automation hand-rolled). If a solution exists for a different (but still secure) transfer method, such as FTPS, I'm all ears.

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• Converting a GameObject method call from UnityScript to C#

  - by Crims0n_

  Here is the UnityScript implementation of the method i use to generate a randomly tiled background, the problem i'm having relates to how to translate the call to the newTile method in c#, so far i've had no luck fiddling... can anyone point me in the correct direction? Thanks #pragma strict import System.Collections.Generic; var mapSizeX : int; var mapSizeY : int; var xOffset : float; var yOffset : float; var tilePrefab : GameObject; var tilePrefab2 : GameObject; var tiles : List.<Transform> = new List.<Transform>(); function Start () { var i : int = 0; var xIndex : int = 0; var yIndex : int = 0; xOffset = 2.69; yOffset = -1.97; while(yIndex < mapSizeY){ xIndex = 0; while(xIndex < mapSizeX){ var z = Random.Range(0, 5); if (z > 2) { var newTile : GameObject = Instantiate (tilePrefab, Vector3(xIndex*0.64 - (xOffset * (mapSizeX/10)), yIndex*-0.64 - (yOffset * (mapSizeY/10)), 0), Quaternion.identity); tiles.Add(newTile.transform); newTile.transform.parent = transform; newTile.transform.name = "tile_"+i; i++; xIndex++; } if (z < 2) { var newTile2 : GameObject = Instantiate (tilePrefab2, Vector3(xIndex*0.64 - (xOffset * (mapSizeX/10)), yIndex*-0.64 - (yOffset * (mapSizeY/10)), 0), Quaternion.identity); tiles.Add(newTile2.transform); newTile2.transform.parent = transform; newTile2.transform.name = "Ztile_"+i; i++; xIndex++; } } yIndex++; } } C# Version [Fixed] using UnityEngine; using System.Collections; public class LevelGen : MonoBehaviour { public int mapSizeX; public int mapSizeY; public float xOffset; public float yOffset; public GameObject tilePrefab; public GameObject tilePrefab2; int i; public System.Collections.Generic.List<Transform> tiles = new System.Collections.Generic.List<Transform>(); // Use this for initialization void Start () { int i = 0; int xIndex = 0; int yIndex = 0; xOffset = 1.58f; yOffset = -1.156f; while (yIndex < mapSizeY) { xIndex = 0; while(xIndex < mapSizeX) { int z = Random.Range(0, 5); if (z > 5) { GameObject newTile = (GameObject)Instantiate(tilePrefab, new Vector3(xIndex*0.64f - (xOffset * (mapSizeX/10.0f)), yIndex*-0.64f - (yOffset * (mapSizeY/10.0f)), 0), Quaternion.identity); tiles.Add(newTile.transform); newTile.transform.parent = transform; newTile.transform.name = "tile_"+i; i++; xIndex++; } if (z < 5) { GameObject newTile2 = (GameObject)Instantiate(tilePrefab, new Vector3(xIndex*0.64f - (xOffset * (mapSizeX/10.0f)), yIndex*-0.64f - (yOffset * (mapSizeY/10.0f)), 0), Quaternion.identity); tiles.Add(newTile2.transform); newTile2.transform.parent = transform; newTile2.transform.name = "tile2_"+i; i++; xIndex++; } } yIndex++; } } // Update is called once per frame void Update () { } }

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• DirectAccess Server firewall rules blocking ports

  - by StormPooper

  I have configured DirectAccess on my Server 2012 Essentials box and most of it works great - I can remotely access the server via RDP and the default IIS website on port 80. However, I can't access anything that uses other ports. For this example, the Team Foundation Server website. The only way to access it is by accessing http://localhost:8080/tfs on the server directly - even when using http://servername:8080/tfs or http://192.168.1.100:8080/tfs won't work. I've tried adding the ports to the NAT exceptions using Set-NetNatTransitionConfiguration –IPv4AddressPortPool and while that has allowed some ports used internally (Deluge, for example) it hasn't allowed me access to the URL. I think I've narrowed it down to the "DirectAccess Server Settings" Group Policy that is created when configuring DirectAccess. When I disable the link for this GPO, the TFS site works again, but the default IIS site stops working (but RDP still works). I already have rules in the firewall on the server for TFS and before enabling this Group Policy (so before configuring DirectAccess) I could access both sites. Does anybody have any suggestions for things I can change to allow access to both? I've uploaded the full GPO report and my Remote Access Configuration Summary for more details.

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• Password Policy seems to be ignored for new Domain on Windows Server 2008 R2

  - by Earl Sven

  I have set up a new Windows Server 2008 R2 domain controller, and have attempted to configure the Default Domain Policy to permit all types of passwords. When I want to create a new user (just a normal user) in the Domain Users and Computers application, I am prevented from doing so because of password complexity/length reasons. The password policy options configured in the Default Domain Policy are not defined in the Default Domain Controllers Policy, but having run the Group Policy Modelling Wizard these settings do not appear to be set for the Domain Controllers OU, should they not be inherited from the Default Domain policy? Additionally, if I link the Default Domain policy to the Domain Controllers OU, the Group Policy Modelling Wizard indicates the expected values for complexity etc, but I still cannot create a new user with my desired password. The domain is running at the Windows Server 2008 R2 functional level. Any thoughts? Thanks! Update: Here is the "Account policy/Password policy" Section from the GPM Wizard: Policy Value Winning GPO Enforce password history 0 Passwords Remembered Default Domain Policy Maximum password age 0 days Default Domain Policy Minimum password age 0 days Default Domain Policy Minimum password length 0 characters Default Domain Policy Passwords must meet complexity Disabled Default Domain Policy These results were taken from running the GPM Wizard at the Domain Controllers OU. I have typed them out by hand as the system I am working on is standalone, this is why the table is not exactly the wording from the Wizard. Are there any other policies that could override the above? Thanks!

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• how to prevent other computers from seeing our network computers through vpn

  - by Disco

  We have a local office domain consisting of Windows 7 and XP machines that is running on Windows Server 2008 R2. We also have users that connect via VPN into our network. My concern is that when a remote user opens up a folder, the Network section on the left side of the folder shows the remote user all the computer names in our local network. I would like to go about renaming our computers in the local network with more descriptive computer names, but I do not want the users off-site to be able to see these computer names by simply opening up a folder. (Granted, they can already do this, but our current naming scheme does not link computer names to users.) I would like to change our computer names so we can determine which computer belongs to which user more easily IF it can be done securely. How can I ensure that our local computer names are not showing up in the Network folder for remote, VPN-connected users? My online searches have turned up results where people are advised to turn off Network Sharing and Discovery, but that seems to only ensure that the local machine doesn't see other computer names. I want to prevent OUR computer names from showing up on OTHER computers, and I can't go into the VPN-connected computers and turn off THEIR Network Discovery settings. I would think there is a group policy that would control this but I have not found one yet and I don't know how I would apply it to VPN-connected computers. Thanks! EDIT: That's true, a Group Policy wouldn't run on users only connecting via VPN, good point. What about a VPN/router policy, then?

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• Some doubts about the use of usermod and groupmod command

  - by AndreaNobili

  I am not yet a true "Linux guy" and I have the following doubts about how exactly do the following shell procedure (a list of commands steps) founded in a tutorial that I am following (I want deeply understand what I am doing before do it): sudo passwd root then login again as root usermod -l miner pi usermod -m -d /home/miner miner groupmod -n miner pi exit So at the beginning it enable the root account and I have to login again in the system as root...this is perfectly clear for me. And now I have the followings doubts: 1) The usermod command: usermod -l miner pi usermod -m -d /home/miner miner Reading the official documentation of the usermod command I understand that this command modify the informations related to an existing account Reading the documentation it seems to me that the -l parmether modify the name of the user pi in miner and then the -m -d paramether move the contents of the old home directory to the new one (named miner) and use this new directory as home directory My doubt is: what exactly do the executions of these operation? I think that: Rename the existing pi user in miner Then move the content of the old home directory (the pi home directory? or what?) into a new directory (/home/miner) that now is the home directory for the miner user. Is it right? The the second doubt is related to this command groupmod -n miner pi It seems to me that change the group name from pi in miner But what exactly is a group in Linux and why is it used? Tnx

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• How to script GPO in Windows computers without Active Directory?

  - by Peteris Krumins

  Does anyone know how to script GPO for users in a Windows computer that is not on any Active Directory network? I can't use GPMC because it doesn't work without a domain. I have been searching the net for the last couple of hours and all the solutions that I find are related to GPMC. I'd imagine there are some objects in the GPO that are accessible via WMI? Does anyone know anything about that? I was unable to find any information about that. Here is the situation I am trying to script: I have 10 users on the machine, and I want to restrict what they are able to do on the machine. So I created 10 GPOs for each one of them. Now I want to apply a common policy to all of them. The only way to do it is to go through each of the GPO and do it manually. This is too time consuming, therefore I am seeking for a simpler solution. I was unable to find a way to copy GPO from a user to a user. That would make it much easier, I would create a GPO for 1st user, then copy it over to all the other users, but no luck, couldn't find a way to copy GPOs. The other method I tried was creating a GPO for the whole user group but it turns out you can't apply GPO to a group unless you use GPMC, which I can't cause the computer is not on any domain. So I am thinking about scripting this whole process, but again I can't find any examples of how to access particular GPO objects for particular users and modify properties through WMI. Any suggestions on the issue I am having? Thanks!

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