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• MacOS Virtual Input Devices

  - by computergeek6

  How can I create a virtual HID device in code? I'm trying to avoid writing a kernel extension to accomplish this, but it seems to be the only way. I need to be able to create virtual HID devices of all types, and have an app running in the background feed them events. Is there a way to do this in user-space, or must I venture into kernel land?

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• Singleton class in DLL used on multiple virtual directories

  - by Drejc

  I have the following situation: multiple virtual directories under same application pool in IIS copy of same DLL in all those directories (same version number) a singleton class in one in this DLL The question is, is this singleton class created only once for all those Virtual Directory instances or is there for each of there one singleton class. The code looks something like this: [ Transaction(TransactionOption.Supported), ClassInterface(ClassInterfaceType.AutoDispatch), Guid("7DE45C4D-19BE-4AA4-A2DA-F4D86E6502A8") ] public class SomeClass { private static readonly Singleton singleton = new Singleton();

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• Virtual DNS recommended setup...

  - by luison

  Hi. We are new to virtualization which we are setting up with Proxmox VE (OpenVZ + KVM). I am a bit lost about the recommended DNS forwarder config specially in the OpenVZ (Virtuosso type) of enviroiment. Our intention was to have a small dnsmasq running in one of the VM acting as backup DHCP server and serving our in-office local addresses (and PCs) by an additional resolve.conf file which dnsmasq supports, but I've read that all VM should share DNS pointing to the host machine in which case it would make more sense having it there. My problem is that I would like to have as least as possible apps in the host so a reinstall of the environment (porxmox ve) and a machine restore can be as quick as possible. Does anyone have a similar setup? Does it make sense to have the 1st virtual machine running the local dns forwarder? Also... dnsmasq seems to want to have root permissions when running on an OpenVZ container... are there any work arrounds anyone knows for that.

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• Load balance between two virtual directories on a single machine running IIS6

  - by Emil Lerch

  I'm trying to simulate a production environment using a single VM. The production environment will have 3 servers behind a load balancer with sticky sessions. Production will be using IIS6. For development, I have no need to distribute load, but I want to make sure the team does not write code that relies on a single-server module. I have been hoping to set up two virtual directories and find some isapi filter to perform some rudimentary software load balancing, but I've been unable to locate anything suitable. isapi_rewrite comes close but there's no ability for a random rewrite. I don't even need sticky sessions since the application does not (in theory) rely on them. Is there something easy/free to do this, or am I stuck with multiple VMs and a NLB setup (which seems like total overkill)?

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• How can I get data off of a (probably) very corrupt drive?

  - by Mercury1964

  So, my younger brother wanted my help today. Apparently, he was helping a friend install Ubuntu to his laptop, and midway through the install (on a filled hard-drive with Windows 8, from the liveusb thing): 1) They realized that they had chosen "Erase and install" accidentally and decided the best course of action was to (in the middle of an install, remember) 2) Force shutdown the computer. After I had replaced my eyeballs back into their sockets, my bro asked if I could do anything about his friend's data, which he wanted back. This, however, drifts out of my normal comfort zone. I know this about the install: 1) It was on a fairly new Windows 8 laptop, so it had whatever filesystem it uses nowadays on the entire drive 2) They didn't choose the "zero out drive data" option 3) They stopped the install at some point (not sure if before or after wipe) I can imagine that it now has two corrupted filesystems on it (whatever Windows 8 was on and ext3) and that some of the data still exists (assuming it wasn't overwritten already). Is there anything that can be done for whatever data is left on the drive?

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• "Catch-All" access log with Apache Virtual Hosts?

  - by pix0r

  I have many virtual hosts set up on a web server, each one having its own error and access log. The relevant lines of httpd.conf are something like this: ErrorLog /var/log/httpd-error.log LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined CustomLog /var/log/httpd-access.log combined NameVirtualHost *:80 <VirtualHost *:80> ServerName myhost.com ServerAlias www.myhost.com DocumentRoot /var/www/myhost.com/htdocs ErrorLog /var/www/myhost.com/log/error.log CustomLog /var/www/myhost.com/log/access.log combined </VirtualHost> # ... many more VirtualHosts Currently, I'm getting some random errors in /var/log/httpd-error.log, but I'm getting nothing in /var/log/httpd-access.log. Is it possible to have ALL accesses and errors duplicated to a shared logfile? Is it possible to do this without adding new entries to every single VirtualHost?

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• Cannot connect to a 2008 sql server named instance hosted in a azure virtual machine

  - by emardini

  When I try to connect to a named instance in a SQL SERVER hosted in a azure VM I get this message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1) The problem is the sql browser is not working properly, when I start the sql browser service it closes after a few seconds and the event log says "There are no instances of SQL Server or SQL Server Analysis Services." But I do have a named instance, I can connect locally to this instance. I've re-installed sql browser and the instance but ii does not work. The host is a azure virtual machine windows server 2008 datacenter. Please help. Thank you

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• Creating a bootable external drive in OSX

  - by Brian Postow

  I want to do some slightly dangerous testing, testing an install package I've written, so I've got an external drive, and I want to make it a bootable OSX disk, then I can boot up on the external, do my install, and if it screws things up, it doesn't actually affect the usability of my machine. The problem is that when I stick the disk that came with my computer (It's actually another computer in the office, but they're both minis) in and try to run the installer, it says "You cannot install OSx 10.6 on this computer". Now, the computer is ALREADY running 10.6, so that's a kind of silly error message... It does this when I boot to the DVDRom as well. Am I doing something really really dumb? or what?

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• Default virtual server does not work

  - by Luc

  Hello, I have 4 Name Virtual Hosts on my apache configuration, each one using proxy_http to forward request to the correct server. They work fine. <VirtualHost *:80> ServerName application_name.domain.tld ProxyRequests Off ProxyPreserveHost On ProxyPass / http://server_ip/ ProxyPassReverse / http://server_ip/ </VirtualHost> I then tried to add a default NameVirtualHost to take care of the requests for which the server name does not match one of the four others. Otherwise a request like some_weird_styff.domain.tld would be forwarded to one of the 4 VH. I then added this one: <VirtualHost *:80> ServerAlias "*" DocumentRoot /var/www/ </VirtualHost> At the beginning it seemed to work fine, but at some point it appears that the requests that should be handed by one of the 4 regular hosts is "eaten" by the default one !!! If I a2dissite this default host, everything is back to normal... I do not really understand this. If you have any clue... thanks a lot, Luc

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• Windows 8 cloned drive in 2nd computer

  - by Mark

  I did the Windows 8 Pro upgrade machine w/ 64GB SSD. Finding 64GB not enough, I ordered a 128 GB SSD (Samsung 830) while planning to use CloneZilla to clone the Windows 8 OS to it. I might try using the 64GB SSD (with the Windows 8 upgrade on it) as a boot drive in a backup machine. I understand that I need to do some registry work to make it happy about the SSD 'transplant,' but I am worried about having to register the same activation key on 2 computers. Am I at high risk of getting 'deactivated'? Note that the backup machine is only used when primary computer is off.

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• Sharing an external hard drive in Ubuntu using Samba

  - by cambraca

  /media/MYDISK is where my hard drive is mounted automatically. I created a symlink using: ln -s /media/MYDISK /home/camilo/MYDISK chmod 777 /home/camilo/MYDISK I'm setting up smb.conf like this: [myshare1] comment = external disk browsable = yes path = /home/camilo/MYDISK guest ok = yes read only = no create mask = 0775 Also, in the [global] section I tried adding the following lines: follow symlinks = yes wide links = yes unix extensions = no The problem is that when browsing the shared folder in Windows 7, I get a "\\etc\myshare1 is not accessible" error. When pointing the path to a regular folder it works fine. Also, when I point it directly to /media/MYDISK, it shows the same error. EDIT: to make it more interesting, I have no graphical interface, so I need to touch the config files directly..

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• updating drive mapping GPO programmatically using powershell

  - by Kristoffer

  I have a Group Policy in a domain that have lots of drive mapping settings. I would like to change the path for a lot of these servers in this gpo with powershell if possible. I know i could do this via the GPMC, but would prefer to do it programtically. I have looked at the grouppolicy powershell module from microsoft (get-gpo and friends) but i only seem to be able to change registry entrys and permissions on the policys, not the actual path for the drivemapping. any ideas? Thanks!

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• Data drive disappearing.

  - by Mike Keller

  We have a Windows 2003 R2 server with SP 2 here that randomly loses a partition. There are two partitions the C: and the D: (the one that disappears). When I go into Disk Management the space shows available on the drive but that it isn't formated. There are two drives that are set up in a RAID 1 array. There isn't anything sticking out in the event log as to something triggering this problem and thank god we do daily backups of the data, but it gets kind of annoying to have to go back in there and reformat the partition and restore the data. Any places I can poke around to find the cause of this or even better solutions to the problem would be appreciated.

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• aligning truecrypt partition on 1.5TB 4kB sector drive

  - by pQd

  hi, aligning partitions to start at real physical sector of ssds / stripped raids / 4kB drives is a 'good thing to do'. but i've run into a problems when trying to do it for a truecrypt partition that will contain ext3 on it. or so it seems. when drive is question is partitioned properly and formatted with ext3 i get very reasonable write speeds around 70-80MB/s, but when i put truecrypt and ext3 on the top of it write performance becomes very unstable and goes between 1-25MB/s with very high io-wait. on the same server i dont have any performance issues with ext3 on the top of truecrypt on regular 512B-sector 500GB sata disks. so my best guess is that iowaits are caused by misalignment but i cannot really find reliable information on how to calculate optimal partition beginning. i've tried to start it at 128 logical sector, i've also tried 8132 sector as suggested here but both gave me very bad and unstable performance. do you have any experience with similar setup? thanks!

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• External hard drive not disconnecting and leaving 'ghost drives' on my PC

  - by Shane

  I use a Seagate FreeAgent on my laptop and PC. While it works fine most of the time, sometimes when I try to safely disconnect it, it says the files are in use. Obviously I have by that time shut down all applications. Now with my laptop, a Toshiba Satellite, I shut down the computer and unplug the Seagate and no ghost drives are found. But no matter what I do with my desktop, it continues to create 'ghost drives'. Is this due to a feature in the external hard drive, and if so, would anyone have an idea how I can fix it? I am getting tired of deleting the 'ghost drives'. Both my laptop and desktop use Windows 7.

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• Unable to delete a directory from NTFS drive: "Access is deined"

  - by Evgeny

  I'm running Windows XP Pro x64 SP2. I have a directory on an NTFS drive that was created by a Maven build. A subsequent build attempted to delete this directory and failed. I now get the error "Access is denied" whenever I try to do anything with that directory: change to it, delete it, rename it. This happens both in Windows Explorer and from a command prompt. The properties dialog in Windows Explorer doesn't even contain the Security tab. I created the directory, so I don't think this is truly a permissions issue. I've occasionally had this error happen in the past is well. I believe the error is misleading, but the question is: what is the real problem and how do I fix it?

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• CA ArcServe r11.1 - have to switch Tape Drive Offline then Online to finish backup

  - by Richard

  Ill keep it brief, I have an HP Ultrium 1 in a server currently running CA ArcServe r11.1. I have 5 daily backup tapes, each of which are new. 3 of the 5 work fine without intervention but 2 of them stop at varying points through the backup asking for a new tape, even though that tape is not full. The way I have found around this is to switch the tape drive offline for 10 minutes then switch it back online, whilst the backup is still running. Has anyone ever seen this before? If so, any ideas how to permanently fix this. If all else fails just some pointers in the right direction. Thanks

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• access virtual host(name based) in android

  - by ricky

  hii i have set up virtual host in apache and and added relevent information in windows host file. it works fine for desktop browsers but i am not able to access this from android simulator's browser. as a example a i created a virtual host "testweb" i added this information in widows hosts file also so in desktop browser it works fine with the url http://testweb/ but in android simulator browser it displays error tht page has been moved .... so plz give me solution what i shud do to work it and where i am getting wrong...plz help me

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• Exchange 2013 Virtual Machine: Backup just mailboxes and clear logs

  - by Ben Curtis

  I have a Windows Server 2012 machine running Exchange 2013 running as a KVM virtual machine. For my VM guests, I do full image based backups from the host, so that I can quickly restore to any host server simply by copying over the disk image files. This means I don't need a nightly full system backup. That being said, without running a VSS Full Backup, the Exchange logs get massive (Specifically, the performance logs which are 500MB a day). In addition, I would also like to have a nightly backup of just the mail database. What is the best way to accomplish this? A full backup of the C:\Program Files\Microsoft\Exchange Server\V15 folder as I found in one tutorial did not clear out the logs. Thanks, Ben

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• Sharing an external hard drive in Ubuntu using Samba

  - by cambraca

  /media/MYDISK is where my hard drive is mounted automatically. I created a symlink using: ln -s /media/MYDISK /home/camilo/MYDISK chmod 777 /home/camilo/MYDISK I'm setting up smb.conf like this: [myshare1] comment = external disk browsable = yes path = /home/camilo/MYDISK guest ok = yes read only = no create mask = 0775 Also, in the [global] section I tried adding the following lines: follow symlinks = yes wide links = yes unix extensions = no The problem is that when browsing the shared folder in Windows 7, I get a "\\etc\myshare1 is not accessible" error. When pointing the path to a regular folder it works fine. Also, when I point it directly to /media/MYDISK, it shows the same error. EDIT: to make it more interesting, I have no graphical interface, so I need to touch the config files directly..

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• How to recover data from a drive that was erased during the Ubuntu installation?

  - by user110353

  Yesterday I had two NTFS partitions on my drive. One on which Windows 7 was installed (C Drive) and the other contained my data (D Drive). During Ubuntu installation I choose to install Ubuntu and erase my existing OS. When Ubuntu installed, I was shocked to see no partition. All my data was gone. I must have done something wrong in selecting my option during installation. Is there any way I can recover my D Drive? Thanks in advance.

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• KVM Virtual guest Paused on Reboot

  - by David Hamilton

  I'm running REHL 6 and just installed a Ubuntu Server Guest via KVM set to start at boot. This works correctly and the guest loads, but it loads "paused" and requires that I manually un-pause it. Can someone give me a hint as to how I can I get the Guest OS to actually become active on boot? Here is the libvert dump as requested...Also tried libvert auto-start --- no effect. <domain type='kvm' id='1'> <name>MailServer</name> <uuid>a61dae75-1f5c-d536-718f-3c615d9b4868</uuid> <memory>4194304</memory> <currentMemory>4194304</currentMemory> <vcpu>4</vcpu> <os> <type arch='x86_64' machine='rhel6.0.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/home/MailServer/MailServer-1.img'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:cd:f9:9f'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/1'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/1'> <source path='/dev/pts/1'/> <target port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes'/> <sound model='ac97'> <alias name='sound0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='selinux'> <label>system_u:system_r:svirt_t:s0:c211,c271</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c211,c271</imagelabel> </seclabel></domain>

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• Computer randomly shuts down with a fading alarm power button and CD drive

  - by Shad

  I am currently experiencing something very very odd. Having build my PC myself, I have never had any issues (or anything heat related). A few moments ago my computer shut down very randomly and everything goes blank, when I looked down on my case's power button it was fading on and off in such way I've had never seen before. I noticed the CD drive all of a sudden also started blinking randomly. What do you guys think this problem is related to? It is definitely not a overheating issue and I am pretty sure my 600 watt power supply didn't blow because right now I am able to turn it on and boot up the PC but 20 seconds later it shuts down (sometimes doesn't shut down for 2 minutes). I have no idea what this is... My specs are (built by myself): i5 3570k (unoverclocked) GTX 560ti Asrock Z77 Pro4-M motherboard 8GB Vengeance RAM 600W Corsair power supply 500GB of Seagate HD Case: Corsair Carbide 300R

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• Disk image of a Windows 2000 NTFS hard drive

  - by Federico

  Hi, I need to create a disk image from a Windows 2000, NTFS formatted, hard drive. This image has to be used to create backup hard drives to replace the original disk in case an emergency situation arises. This is a medical equipment, so I cannot physically disconnect the disk because I would violate the warranty of the equipment. This machine has a DVD R/W, ethernet and USB 2.0 access, and we have the rights to install any application I want in the Windows 2000 system. 1) Is there any way to do this without installing any new software in the Windows 2000 system, so it is the least invasive as possible? 2) If we have to install a software to do the backup, which software do you recommend? Any hint will be greatly appreciated. Thanks in advance, Federico

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• Create Virtual Image of Laptop before Formatting

  - by Simon Mark Smith

  I have a 3 year old laptop running Windows XP that I used for business. Although I have not used the laptop in over a year, I now want to re-commission it with Windows 7 and a fresh install. Before I do the fresh install I want to create a Virtual Image of the laptop that I can keep and potentially run on my desktop machine should I ever need to access any of the old files/projects that it contains currently. I know that most people will say just copy the files over to your desktop, but my concern is the configuration of the laptop. I used to use it for development and it has older versions of Visual Studio, SQL Server, Active X controls etc, etc than I currently use so I really want to preserve the environment not just the files. So really I am asking what is the best tool-set/method to achieve this? I understand there are free VM tools available but I have never done this before and would appreciate any help.

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