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  • Random password variable disappears

    - by snaken
    Hi, I'm using the following to generate a random password in a shell script: DBPASS=</dev/urandom tr -dc A-Za-z0-9| (head -c $1 > /dev/null 2>&1 || head -c 8) When i run this in a file on its own like this: #!/bin/sh DBPASS=</dev/urandom tr -dc A-Za-z0-9| (head -c $1 > /dev/null 2>&1 || head -c 8) echo $DBPASS A password is echoed. When i incorporate it into a larger script though the variable never seems to get created for some reason, so for example this doesn't work: DBPASS=</dev/urandom tr -dc A-Za-z0-9| (head -c $1 > /dev/null 2>&1 || head -c 8) sed -i s/oldpass/$DBPASS/ mysql_connect.php If i manually set the variable though everything is fine.. can anyone see why?

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  • XenServer Converting HVM to Paravirtualised

    - by Karl Kloppenborg
    Recently I have been tasked with the daunting process of converting a setup of HVM enabled VMs (running on Citrix XenServer 5.6.0) into PV (paravirtualised) containers. The constraints of the project was that: The operating system must be functionally identical after the migration. minimal modification to the operating system (with exception of kernel / drive mapping) I also was allowed to change the bootloader(ie, grub) in what ever way I see fit. However, I have attempted this, I will firstly like to show you my steps I took. This at the moment is CentOS5.5 specific: Steps: yum install kernel-xen This installed: 2.6.18-194.32.1.el5xen edited: /boot/grub/menu.lst changed my specs to match: title CentOS (2.6.18-194.32.1.el5xen) root (hd0,0) kernel /vmlinuz-2.6.18-194.32.1.el5xen ro root=/dev/VolGroup00/LogVol00 console=xvc0 initrd /initrd-2.6.18-194.32.1.el5xen.img Then I changed my xenserver parameters to match: xe vm-param-set uuid=[vm uuid] PV-bootloader-args="--kernel /vmlinuz-2.6.18-194.32.1.el5xen --ramdisk /initrd-2.6.18-194.32.1.el5xen.img" xe vm-param-set uuid=[vm uuid] HVM-boot-policy="" xe vm-param-set uuid=[vm uuid] PV-bootloader=pygrub xe vbd-param-set uuid==[Virtual Block Device/VBD uuid] bootable=true Some things to note, I am running a VolGroup LVM ;) Anyways, after all these steps (which aren't much!) I boot the VM and it boots initial kernel just fine, however I am presented with this error: Boot Screen: device-mapper: dm-raid45: initialized v0.2594l Waiting for driver initialization. Scanning and configuring dmraid supported devices Scanning logical volumes Reading all physical volumes. This may take a while... Activating logical volumes Volume group "VolGroup00" not found Creating root device. Mounting root filesystem. mount: could not find filesystem '/dev/root' Setting up other filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev unmounting old /proc unmounting old /sys switchroot: mount failed: No such file or directory Now my hints are that it cannot detect / because of the fact that when you change from HVM mode to PV it does something (not that obvious) When you make a SR (storage) on a HVM, you get it mounted to the guest os as /dev/hda. However in PV mode, this presents itself as /dev/xvda... Could this be the answer? and if so, how the heck to I implement it?? Update: So I have gotten a bit further in my quest, as it now detects the LVM's... To do this, I required to recompile the xen-kernel initrd image. Command: mkinitrd -v --builtin=xen_vbd --preload=xenblk initrd-2.6.18-194.32.1.el5xen.img 2.6.18-194.32.1.el5xen Now when I boot I get this: Boot Screen: Loading dm-raid45.ko module device-mapper: dm-raid45: initialized v0.2594l Scanning and configuring dmraid supported devices Scanning logical volumes Reading all physical volumes. This may take a while... Found volume group "VolGroup00" using metadata type lvm2 Activating logical volumes 3 logical volume(s) in volume group "VolGroup00" now active Creating root device. Mounting root filesystem. mount: error mounting /dev/root on /sysroot as ext3: Device or resource busy Setting up other filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev unmounting old /proc unmounting old /sys switchroot: mount failed: No such file or directory Kernel panic - not syncing: Attempted to kill init!

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  • Linux software RAID6: rebuild slow

    - by Ole Tange
    I am trying to find the bottleneck in the rebuilding of a software raid6. ## Pause rebuilding when measuring raw I/O performance # echo 1 > /proc/sys/dev/raid/speed_limit_min # echo 1 > /proc/sys/dev/raid/speed_limit_max ## Drop caches so that does not interfere with measuring # sync ; echo 3 | tee /proc/sys/vm/drop_caches >/dev/null # time parallel -j0 "dd if=/dev/{} bs=256k count=4000 | cat >/dev/null" ::: sdbd sdbc sdbf sdbm sdbl sdbk sdbe sdbj sdbh sdbg 4000+0 records in 4000+0 records out 1048576000 bytes (1.0 GB) copied, 7.30336 s, 144 MB/s [... similar for each disk ...] # time parallel -j0 "dd if=/dev/{} skip=15000000 bs=256k count=4000 | cat >/dev/null" ::: sdbd sdbc sdbf sdbm sdbl sdbk sdbe sdbj sdbh sdbg 4000+0 records in 4000+0 records out 1048576000 bytes (1.0 GB) copied, 12.7991 s, 81.9 MB/s [... similar for each disk ...] So we can read sequentially at 140 MB/s in the outer tracks and 82 MB/s in the inner tracks on all the drives simultaneously. Sequential write performance is similar. This would lead me to expect a rebuild speed of 82 MB/s or more. # echo 800000 > /proc/sys/dev/raid/speed_limit_min # echo 800000 > /proc/sys/dev/raid/speed_limit_max # cat /proc/mdstat md2 : active raid6 sdbd[10](S) sdbc[9] sdbf[0] sdbm[8] sdbl[7] sdbk[6] sdbe[11] sdbj[4] sdbi[3](F) sdbh[2] sdbg[1] 27349121408 blocks super 1.2 level 6, 128k chunk, algorithm 2 [9/8] [UUU_UUUUU] [=========>...........] recovery = 47.3% (1849905884/3907017344) finish=855.9min speed=40054K/sec But we only get 40 MB/s. And often this drops to 30 MB/s. # iostat -dkx 1 sdbc 0.00 8023.00 0.00 329.00 0.00 33408.00 203.09 0.70 2.12 1.06 34.80 sdbd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdbe 13.00 0.00 8334.00 0.00 33388.00 0.00 8.01 0.65 0.08 0.06 47.20 sdbf 0.00 0.00 8348.00 0.00 33388.00 0.00 8.00 0.58 0.07 0.06 48.00 sdbg 16.00 0.00 8331.00 0.00 33388.00 0.00 8.02 0.71 0.09 0.06 48.80 sdbh 961.00 0.00 8314.00 0.00 37100.00 0.00 8.92 0.93 0.11 0.07 54.80 sdbj 70.00 0.00 8276.00 0.00 33384.00 0.00 8.07 0.78 0.10 0.06 48.40 sdbk 124.00 0.00 8221.00 0.00 33380.00 0.00 8.12 0.88 0.11 0.06 47.20 sdbl 83.00 0.00 8262.00 0.00 33380.00 0.00 8.08 0.96 0.12 0.06 47.60 sdbm 0.00 0.00 8344.00 0.00 33376.00 0.00 8.00 0.56 0.07 0.06 47.60 iostat says the disks are not 100% busy (but only 40-50%). This fits with the hypothesis that the max is around 80 MB/s. Since this is software raid the limiting factor could be CPU. top says: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 38520 root 20 0 0 0 0 R 64 0.0 2947:50 md2_raid6 6117 root 20 0 0 0 0 D 53 0.0 473:25.96 md2_resync So md2_raid6 and md2_resync are clearly busy taking up 64% and 53% of a CPU respectively, but not near 100%. The chunk size (128k) of the RAID was chosen after measuring which chunksize gave the least CPU penalty. If this speed is normal: What is the limiting factor? Can I measure that? If this speed is not normal: How can I find the limiting factor? Can I change that?

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  • Maven. How to include specific folder or file when assemblying project depending on is it dev build or production?

    - by user563588
    Using maven-assembly-plugin <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.1</version> <configuration> <descriptors> <descriptor>descriptor.xml</descriptor> </descriptors> <finalName>xxx-impl-${pom.version}</finalName> <outputDirectory>target/assembly</outputDirectory> <workDirectory>target/assembly/work</workDirectory> </configuration> in descriptor.xml file we can specify <fileSets> <fileSet> <directory>src/install</directory> <outputDirectory>/</outputDirectory> </fileSet> </fileSets> Is it possible to include specific file from this folder or sub-folder depending on profile? Or some other way... Like this: <profiles> <profile> <id>dev</id> <activation> <activeByDefault>false</activeByDefault> </activation> <build> <resources> <resource> <directory>src/install/dev</directory> <includes> <include>**/*</include> </includes> </resource> </resources> </build> </profile> <profile> <id>prod</id> <build> <resources> <resource> <directory>src/install/prod</directory> <includes> <include>**/*</include> </includes> </resource> </resources> </build> </profile> </profiles> But it puts resources in jar when packaging. But we need to put it in zip when assemblying as I already mentioned above :( Thanks!

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  • Maven. How to include specific folder or file when assemblying project depending on is it dev build or production?

    - by user563588
    Using maven-assembly-plugin <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.1</version> <configuration> <descriptors> <descriptor>descriptor.xml</descriptor> </descriptors> <finalName>xxx-impl-${pom.version}</finalName> <outputDirectory>target/assembly</outputDirectory> <workDirectory>target/assembly/work</workDirectory> </configuration> in descriptor.xml file we can specify <fileSets> <fileSet> <directory>src/install</directory> <outputDirectory>/</outputDirectory> </fileSet> </fileSets> Is it possible to include specific file from this folder or sub-folder depending on profile? Or some other way... Like this: <profiles> <profile> <id>dev</id> <activation> <activeByDefault>false</activeByDefault> </activation> <build> <resources> <resource> <directory>src/install/dev</directory> <includes> <include>**/*</include> </includes> </resource> </resources> </build> </profile> <profile> <id>prod</id> <build> <resources> <resource> <directory>src/install/prod</directory> <includes> <include>**/*</include> </includes> </resource> </resources> </build> </profile> </profiles> But it puts resources in jar when packaging. But we need to put it in zip when assemblying as I already mentioned above :( Thanks!

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  • Oracle ADF Coverage at OOW

    - by Frank Nimphius
    Below is the schedule for all ADF related sessions at a glance. Note the Meet and greet session added for Wednesday Octiber 3rd from 4.30 pm to 5:30. Oracle ADF and Fusion Development General Session Mon 1 Oct, 2012 Time Title Location 10:45 AM - 11:45 AM General Session: The Future of Development for Oracle Fusion—From Desktop to Mobile to Cloud Marriott Marquis - Salon 8 12:15 PM - 1:15 PM General Session: Extend Oracle Fusion Apps to Tablets/Smartphones with Oracle Mobile Technology Moscone West - 3014 1:45 PM - 2:45 PM General Session: Extend Oracle Applications to Mobile Devices with Oracle’s Mobile Technologies Moscone West - 3002/3004 4:45 PM - 5:45 PM General Session: Building Mobile Applications with Oracle Cloud Moscone West - 2002/2004 Conference Session Mon 1 Oct, 2012 Time Title Location 12:15 PM - 1:15 PM Understanding Oracle ADF and Its Role in Oracle Fusion Moscone South - 306 1:45 PM - 2:45 PM Building Performant Oracle ADF Business Components to Meet Tomorrow’s Needs Marriott Marquis - Golden Gate C3 3:15 PM - 4:15 PM End-to-End Oracle ADF Development in Eclipse Marriott Marquis - Golden Gate C3 4:45 PM - 5:45 PM Classic Mistakes with Oracle Application Development Framework Marriott Marquis - Salon 7 Tues 2 Oct, 2012 Time Title Location 10:15 AM - 11:15 AM One Size Doesn’t Fit All: Oracle ADF Architecture Fundamentals Marriott Marquis - Golden Gate C2 10:15 AM - 11:15 AM Oracle Business Process Management/Oracle ADF Integration Best Practices Marriott Marquis - Golden Gate C3 11:45 AM - 12:45 PM Mobile-Enable Oracle Fusion Middleware and Enterprise Applications with Oracle ADF Moscone South - 306 11:45 AM - 12:45 PM Secrets of Successful Projects with Oracle Application Development Framework Marriott Marquis - Golden Gate C2 1:15 PM - 2:15 PM Develop On-Device iPhone and iPad Apps Without Writing Any Objective-C Code Marriott Marquis - Golden Gate C2 1:15 PM - 2:15 PM BPM, SOA, and Oracle ADF Combined: Patterns Learned from Oracle Fusion Applications Moscone West - 3003 1:15 PM - 2:15 PM The Future of Forms Is … Oracle Forms (and Friends) Moscone South - 306 5:00 PM - 6:00 PM Best Practices for Integrating SOAP and REST Service into Oracle ADF Marriott Marquis - Golden Gate C2 Wed 3 Oct, 2012 Time Title Location 10:15 AM - 11:15 AM Mobile Apps for Oracle E-Business Suite with Oracle ADF Mobile and Oracle SOA Suite Moscone West - 3001 10:15 AM - 11:15 AM Visualize This! Best Practices for Data Visualization in Desktop and Mobile Apps Marriott Marquis - Golden Gate C3 10:15 AM - 11:15 AM Set Up Your Oracle ADF Project and Development Team for Productivity: Seven Essential Tips Marriott Marquis - Golden Gate C2 11:45 AM - 12:45 PM How to Migrate an Oracle Forms Application to Oracle ADF Marriott Marquis - Golden Gate C2 1:15 PM - 2:15 PM Oracle ADF: Lessons Learned in Real-World Implementations Moscone South - 309 3:30 PM - 4:30 PM Oracle ADF Implementations Around the Globe: Best Practices Marriott Marquis - Golden Gate C2 3:30 PM - 4:30 PM Oracle Developer Cloud Services Marriott Marquis - Salon 7 4:30 PM - 5:30 PM Oracle JDeveloper and Oracle ADF: What’s New Hilton San Francisco - Continental Ballroom 5 5:00 PM - 6:00 PM Mobile Solutions for Oracle E-Business Suite Applications: Technical Insight Moscone West - 2020 5:00 PM - 6:00 PM Extending Social into Enterprise Applications and Business Processes Marriott Marquis - Golden Gate C3 5:00 PM - 6:00 PM The Tie That Binds: An Introduction to Oracle ADF Bindings Marriott Marquis - Golden Gate C2 Thur 4 Oct, 2012 Time Title Location 11:15 AM - 12:15 PM Using Oracle ADF with Oracle E-Business Suite: The Full Integration View Moscone West - 3003 11:15 AM - 12:15 PM Deep Dive into Oracle ADF: Advanced Techniques Marriott Marquis - Golden Gate C2 12:45 PM - 1:45 PM Monitor, Analyze, and Troubleshoot Your Oracle ADF Application Marriott Marquis - Golden Gate C2 2:15 PM - 3:15 PM Oracle WebCenter Portal: Creating and Using Content Presenter Templates Marriott Marquis - Golden Gate C2 HOL (Hands-on Lab) Mon 1 Oct, 2012 Time Title Location 10:45 AM - 11:45 AM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 1:45 PM - 2:45 PM Build Mobile Applications for Oracle E-Business Suite Marriott Marquis - Salon 10A 3:15 PM - 4:15 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 3:15 PM - 4:15 PM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4 4:45 PM - 5:45 PM Application Lifecycle Management with Oracle JDeveloper: Hands-on Lab Marriott Marquis - Salon 3/4 Tues 2 Oct, 2012 Time Title Location 10:15 AM - 11:15 AM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 5:00 PM - 6:00 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A Wed 3 Oct, 2012 Time Title Location 10:15 AM - 11:15 AM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4 11:45 AM - 12:45 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 1:15 PM - 2:15 PM Build Mobile Applications for Oracle E-Business Suite Marriott Marquis - Salon 10A 3:30 PM - 4:30 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 5:00 PM - 6:00 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A Thur 4 Oct, 2012 Time Title Location 11:15 AM - 12:15 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A 11:15 AM - 12:15 PM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4 12:45 PM - 1:45 PM Oracle ADF for Java EE Developers with Oracle Enterprise Pack for Eclipse Marriott Marquis - Salon 3/4 BOF (Birds-of-a-Feather) Mon 1 Oct, 2012 Time Title Location 6:15 PM - 7:00 PM How to Get Started with Oracle ADF Marriott Marquis - Club Room 7:15 PM - 8:00 PM Building Next-Generation Applications with Oracle ADF and Oracle BPM Marriott Marquis - Golden Gate C3 7:15 PM - 8:00 PM The Future of Oracle Forms: Upgrade, Modernize, or Migrate? Marriott Marquis - Golden Gate C2 7:15 PM - 8:00 PM Oracle ADF Faces: One Site for Many Devices Marriott Marquis - Golden Gate C1 - User Group Forum (Sunday Only) Sun 30 Sept, 2012 Time Title Location 9:00 AM - 10:00 AM Oracle ADF Immersion: How an Oracle Forms Developer Immersed Himself in the Oracle ADF World Moscone South - 305 10:15 AM - 11:15 AM Deploy with Joy: Using Hudson to Build and Deploy Your Oracle ADF Applications Moscone South - 305 11:30 AM - 12:30 PM ADF EMG User Group: A Peek into the Oracle ADF Architecture of Oracle Fusion Applications Moscone South - 305 12:45 PM - 3:45 PM ADF EMG User Group: Oracle Fusion Middleware Live Application Development Demo Moscone South - 305 3:15 PM - 4:15 PM Mobile Development with Oracle JDeveloper and Oracle ADF Moscone West - 2010 Demos Demo Location Developer Moscone North, Upper Lobby - N-002 Oracle ADF Mobile Development Moscone North, Upper Lobby - N-001 Oracle Eclipse Projects Hilton San Francisco, Grand Ballroom - HHJ-008 Oracle Enterprise Pack for Eclipse Moscone South, Right - S-208 Oracle JDeveloper and Oracle ADF Moscone South, Right - S-207 Exhibits 0 Exhibitor Location Accenture Moscone South - 1813 Moscone South - 2221 Infosys Moscone South - 1701 Moscone South - SMR-005 Innowave Technology Moscone South - 2309 ODTUG Moscone West, Level 2 Lobby - Kiosk in the User Groups Pavilion Oracle ADF Developers Meet Up Wednesday, Oct 03 Time Activity Location 4:30 PM - 5:30 PM Stop by the OTN Lounge and meet other Oracle ADF & Fusion developers as well as product managers and engineers who work on Oracle ADF, ADF Mobile and ADF Essentials. Feedback and questions welcome, or simply stop by and say ‘hi!’ and enjoy free beer. OTN Lounge

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  • Installation doesn't detect existing partitions

    - by retrac1324
    I am trying to install Ubuntu 11.10 in a dual boot with my existing Windows 7 but the installer does not detect any existing partitions. I have tried resetting my BCD using EasyBCD and doing fixmbr from the Windows startup disc. A while ago I had to use TestDisk to recover my partition table so this might be the cause but I have installed Ubuntu and Windows many times before with no problems. fdisk -l output: Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x360555e5 Device Boot Start End Blocks Id System /dev/sda1 * 2048 1250274689 625136321 7 HPFS/NTFS/exFAT Disk /dev/sdf: 7803 MB, 7803174912 bytes 255 heads, 63 sectors/track, 948 cylinders, total 15240576 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x6f795a8d Device Boot Start End Blocks Id System /dev/sdf1 * 63 15240575 7620256+ c W95 FAT32 (LBA)

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  • OpenVPN not connecting

    - by LandArch
    There have been a number of post similar to this, but none seem to satisfy my need. Plus I am a Ubuntu newbie. I followed this tutorial to completely set up OpenVPN on Ubuntu 12.04 server. Here is my server.conf file ################################################# # Sample OpenVPN 2.0 config file for # # multi-client server. # # # # This file is for the server side # # of a many-clients <-> one-server # # OpenVPN configuration. # # # # OpenVPN also supports # # single-machine <-> single-machine # # configurations (See the Examples page # # on the web site for more info). # # # # This config should work on Windows # # or Linux/BSD systems. Remember on # # Windows to quote pathnames and use # # double backslashes, e.g.: # # "C:\\Program Files\\OpenVPN\\config\\foo.key" # # # # Comments are preceded with '#' or ';' # ################################################# # Which local IP address should OpenVPN # listen on? (optional) local 192.168.13.8 # Which TCP/UDP port should OpenVPN listen on? # If you want to run multiple OpenVPN instances # on the same machine, use a different port # number for each one. You will need to # open up this port on your firewall. port 1194 # TCP or UDP server? proto tcp ;proto udp # "dev tun" will create a routed IP tunnel, # "dev tap" will create an ethernet tunnel. # Use "dev tap0" if you are ethernet bridging # and have precreated a tap0 virtual interface # and bridged it with your ethernet interface. # If you want to control access policies # over the VPN, you must create firewall # rules for the the TUN/TAP interface. # On non-Windows systems, you can give # an explicit unit number, such as tun0. # On Windows, use "dev-node" for this. # On most systems, the VPN will not function # unless you partially or fully disable # the firewall for the TUN/TAP interface. dev tap0 up "/etc/openvpn/up.sh br0" down "/etc/openvpn/down.sh br0" ;dev tun # Windows needs the TAP-Win32 adapter name # from the Network Connections panel if you # have more than one. On XP SP2 or higher, # you may need to selectively disable the # Windows firewall for the TAP adapter. # Non-Windows systems usually don't need this. ;dev-node MyTap # SSL/TLS root certificate (ca), certificate # (cert), and private key (key). Each client # and the server must have their own cert and # key file. The server and all clients will # use the same ca file. # # See the "easy-rsa" directory for a series # of scripts for generating RSA certificates # and private keys. Remember to use # a unique Common Name for the server # and each of the client certificates. # # Any X509 key management system can be used. # OpenVPN can also use a PKCS #12 formatted key file # (see "pkcs12" directive in man page). ca "/etc/openvpn/ca.crt" cert "/etc/openvpn/server.crt" key "/etc/openvpn/server.key" # This file should be kept secret # Diffie hellman parameters. # Generate your own with: # openssl dhparam -out dh1024.pem 1024 # Substitute 2048 for 1024 if you are using # 2048 bit keys. dh dh1024.pem # Configure server mode and supply a VPN subnet # for OpenVPN to draw client addresses from. # The server will take 10.8.0.1 for itself, # the rest will be made available to clients. # Each client will be able to reach the server # on 10.8.0.1. Comment this line out if you are # ethernet bridging. See the man page for more info. ;server 10.8.0.0 255.255.255.0 # Maintain a record of client <-> virtual IP address # associations in this file. If OpenVPN goes down or # is restarted, reconnecting clients can be assigned # the same virtual IP address from the pool that was # previously assigned. ifconfig-pool-persist ipp.txt # Configure server mode for ethernet bridging. # You must first use your OS's bridging capability # to bridge the TAP interface with the ethernet # NIC interface. Then you must manually set the # IP/netmask on the bridge interface, here we # assume 10.8.0.4/255.255.255.0. Finally we # must set aside an IP range in this subnet # (start=10.8.0.50 end=10.8.0.100) to allocate # to connecting clients. Leave this line commented # out unless you are ethernet bridging. server-bridge 192.168.13.101 255.255.255.0 192.168.13.105 192.168.13.200 # Configure server mode for ethernet bridging # using a DHCP-proxy, where clients talk # to the OpenVPN server-side DHCP server # to receive their IP address allocation # and DNS server addresses. You must first use # your OS's bridging capability to bridge the TAP # interface with the ethernet NIC interface. # Note: this mode only works on clients (such as # Windows), where the client-side TAP adapter is # bound to a DHCP client. ;server-bridge # Push routes to the client to allow it # to reach other private subnets behind # the server. Remember that these # private subnets will also need # to know to route the OpenVPN client # address pool (10.8.0.0/255.255.255.0) # back to the OpenVPN server. push "route 192.168.13.1 255.255.255.0" push "dhcp-option DNS 192.168.13.201" push "dhcp-option DOMAIN blahblah.dyndns-wiki.com" ;push "route 192.168.20.0 255.255.255.0" # To assign specific IP addresses to specific # clients or if a connecting client has a private # subnet behind it that should also have VPN access, # use the subdirectory "ccd" for client-specific # configuration files (see man page for more info). # EXAMPLE: Suppose the client # having the certificate common name "Thelonious" # also has a small subnet behind his connecting # machine, such as 192.168.40.128/255.255.255.248. # First, uncomment out these lines: ;client-config-dir ccd ;route 192.168.40.128 255.255.255.248 # Then create a file ccd/Thelonious with this line: # iroute 192.168.40.128 255.255.255.248 # This will allow Thelonious' private subnet to # access the VPN. This example will only work # if you are routing, not bridging, i.e. you are # using "dev tun" and "server" directives. # EXAMPLE: Suppose you want to give # Thelonious a fixed VPN IP address of 10.9.0.1. # First uncomment out these lines: ;client-config-dir ccd ;route 10.9.0.0 255.255.255.252 # Then add this line to ccd/Thelonious: # ifconfig-push 10.9.0.1 10.9.0.2 # Suppose that you want to enable different # firewall access policies for different groups # of clients. There are two methods: # (1) Run multiple OpenVPN daemons, one for each # group, and firewall the TUN/TAP interface # for each group/daemon appropriately. # (2) (Advanced) Create a script to dynamically # modify the firewall in response to access # from different clients. See man # page for more info on learn-address script. ;learn-address ./script # If enabled, this directive will configure # all clients to redirect their default # network gateway through the VPN, causing # all IP traffic such as web browsing and # and DNS lookups to go through the VPN # (The OpenVPN server machine may need to NAT # or bridge the TUN/TAP interface to the internet # in order for this to work properly). ;push "redirect-gateway def1 bypass-dhcp" # Certain Windows-specific network settings # can be pushed to clients, such as DNS # or WINS server addresses. CAVEAT: # http://openvpn.net/faq.html#dhcpcaveats # The addresses below refer to the public # DNS servers provided by opendns.com. ;push "dhcp-option DNS 208.67.222.222" ;push "dhcp-option DNS 208.67.220.220" # Uncomment this directive to allow different # clients to be able to "see" each other. # By default, clients will only see the server. # To force clients to only see the server, you # will also need to appropriately firewall the # server's TUN/TAP interface. ;client-to-client # Uncomment this directive if multiple clients # might connect with the same certificate/key # files or common names. This is recommended # only for testing purposes. For production use, # each client should have its own certificate/key # pair. # # IF YOU HAVE NOT GENERATED INDIVIDUAL # CERTIFICATE/KEY PAIRS FOR EACH CLIENT, # EACH HAVING ITS OWN UNIQUE "COMMON NAME", # UNCOMMENT THIS LINE OUT. ;duplicate-cn # The keepalive directive causes ping-like # messages to be sent back and forth over # the link so that each side knows when # the other side has gone down. # Ping every 10 seconds, assume that remote # peer is down if no ping received during # a 120 second time period. keepalive 10 120 # For extra security beyond that provided # by SSL/TLS, create an "HMAC firewall" # to help block DoS attacks and UDP port flooding. # # Generate with: # openvpn --genkey --secret ta.key # # The server and each client must have # a copy of this key. # The second parameter should be '0' # on the server and '1' on the clients. ;tls-auth ta.key 0 # This file is secret # Select a cryptographic cipher. # This config item must be copied to # the client config file as well. ;cipher BF-CBC # Blowfish (default) ;cipher AES-128-CBC # AES ;cipher DES-EDE3-CBC # Triple-DES # Enable compression on the VPN link. # If you enable it here, you must also # enable it in the client config file. comp-lzo # The maximum number of concurrently connected # clients we want to allow. ;max-clients 100 # It's a good idea to reduce the OpenVPN # daemon's privileges after initialization. # # You can uncomment this out on # non-Windows systems. user nobody group nogroup # The persist options will try to avoid # accessing certain resources on restart # that may no longer be accessible because # of the privilege downgrade. persist-key persist-tun # Output a short status file showing # current connections, truncated # and rewritten every minute. status openvpn-status.log # By default, log messages will go to the syslog (or # on Windows, if running as a service, they will go to # the "\Program Files\OpenVPN\log" directory). # Use log or log-append to override this default. # "log" will truncate the log file on OpenVPN startup, # while "log-append" will append to it. Use one # or the other (but not both). ;log openvpn.log ;log-append openvpn.log # Set the appropriate level of log # file verbosity. # # 0 is silent, except for fatal errors # 4 is reasonable for general usage # 5 and 6 can help to debug connection problems # 9 is extremely verbose verb 3 # Silence repeating messages. At most 20 # sequential messages of the same message # category will be output to the log. ;mute 20 I am using Windows 7 as the Client and set that up accordingly using the OpenVPN GUI. That conf file is as follows: ############################################## # Sample client-side OpenVPN 2.0 config file # # for connecting to multi-client server. # # # # This configuration can be used by multiple # # clients, however each client should have # # its own cert and key files. # # # # On Windows, you might want to rename this # # file so it has a .ovpn extension # ############################################## # Specify that we are a client and that we # will be pulling certain config file directives # from the server. client # Use the same setting as you are using on # the server. # On most systems, the VPN will not function # unless you partially or fully disable # the firewall for the TUN/TAP interface. dev tap0 up "/etc/openvpn/up.sh br0" down "/etc/openvpn/down.sh br0" ;dev tun # Windows needs the TAP-Win32 adapter name # from the Network Connections panel # if you have more than one. On XP SP2, # you may need to disable the firewall # for the TAP adapter. ;dev-node MyTap # Are we connecting to a TCP or # UDP server? Use the same setting as # on the server. proto tcp ;proto udp # The hostname/IP and port of the server. # You can have multiple remote entries # to load balance between the servers. blahblah.dyndns-wiki.com 1194 ;remote my-server-2 1194 # Choose a random host from the remote # list for load-balancing. Otherwise # try hosts in the order specified. ;remote-random # Keep trying indefinitely to resolve the # host name of the OpenVPN server. Very useful # on machines which are not permanently connected # to the internet such as laptops. resolv-retry infinite # Most clients don't need to bind to # a specific local port number. nobind # Downgrade privileges after initialization (non-Windows only) user nobody group nobody # Try to preserve some state across restarts. persist-key persist-tun # If you are connecting through an # HTTP proxy to reach the actual OpenVPN # server, put the proxy server/IP and # port number here. See the man page # if your proxy server requires # authentication. ;http-proxy-retry # retry on connection failures ;http-proxy [proxy server] [proxy port #] # Wireless networks often produce a lot # of duplicate packets. Set this flag # to silence duplicate packet warnings. ;mute-replay-warnings # SSL/TLS parms. # See the server config file for more # description. It's best to use # a separate .crt/.key file pair # for each client. A single ca # file can be used for all clients. ca "C:\\Program Files\OpenVPN\config\\ca.crt" cert "C:\\Program Files\OpenVPN\config\\ChadMWade-THINK.crt" key "C:\\Program Files\OpenVPN\config\\ChadMWade-THINK.key" # Verify server certificate by checking # that the certicate has the nsCertType # field set to "server". This is an # important precaution to protect against # a potential attack discussed here: # http://openvpn.net/howto.html#mitm # # To use this feature, you will need to generate # your server certificates with the nsCertType # field set to "server". The build-key-server # script in the easy-rsa folder will do this. ns-cert-type server # If a tls-auth key is used on the server # then every client must also have the key. ;tls-auth ta.key 1 # Select a cryptographic cipher. # If the cipher option is used on the server # then you must also specify it here. ;cipher x # Enable compression on the VPN link. # Don't enable this unless it is also # enabled in the server config file. comp-lzo # Set log file verbosity. verb 3 # Silence repeating messages ;mute 20 Not sure whats left to do.

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  • "GEOM_MIRROR: cancelling unmapped because of ada0"

    - by antiduh
    Recently upgraded my FreeBSD install to FreeBSD 9.1-stable from the 9-stable branch. I have two SATA hard drives (/dev/ada0, /dev/ada1) in a geom mirror, with nothing between : [/dev/ada0, /dev/ada1] --> /dev/mirror/gm0, which I then partition for root etc. After upgrading from 9.0-stable to 9.1-stable, I found these messages on the console: GEOM_MIRROR: cancelling unmapped because of ada0 GEOM_MIRROR: cancelling unmapped because of ada1 GEOM_MIRROR: Device mirror/gm0 launched (2/2). Everything still seems to work, the mirror seems healthy and the machine works just fine, peformance is fine.

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  • Code bases for desktop and mobile versions of the same app

    - by Code-Guru
    I have written a small Java Swing desktop application. It seems like a natural step to port it to Android since I am interested in learning how to program for that platform. I believe that I can reuse some of my existing code base. (Of course, exactly how much reuse I can get out of it will only be determined as I start coding the Android app.) Currently I am hosting my Java Swing app on Sourceforge.net and use Git for version control. As I start creating the Android app, I am considering two options: Add the Android code to my existing repository, creating separate directories and Java packages for the Android-specific code and resources. Create a new Sourceforge project (or even host a new one) and creating a new Git repository. a. With a new repository, I can simply add the files from my original project that I will reuse. (I don't particularly like this option as it will be difficult to modify both copies of the same file in both repositories.) b. Or I can branch the original repository. This adds the difficulty of merging changes of shared source files. Mostly I am trying to decide between choices 1. and 2b. If I'm going to branch the existing repository, what advantages are there to hosting it as a separate SF project (or even using another OSS hosting service) as opposed to keeping all my source code in the current SF project?

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  • Computer crashes on resume from standby almost every time

    - by Los Frijoles
    I am running Ubuntu 12.04 on a Core i5 2500K and ASRock Z68 Pro3-M motherboard (no graphics card, hd is a WD Green 1TB, and cd drive is some cheap lite-on drive). Since installing 12.04, my computer has been freezing after resume, but not every time. When I start to resume, it starts going normally with a blinking cursor on the screen and then sometimes it will continue on to the gnome 3 unlock screen. Most of the time, however, it will blink for a little bit and then the monitor will flip modes and shut off due to no signal. Pressing keys on the keyboard gets no response (num lock light doesn't respond, Ctrl-Alt-F1 fails to drop it into a terminal, Ctrl-Alt-Backspace doesn't work) and so I assume the computer is crashed. The worst part is, the logs look entirely normal. Here is my system log during one of these crashes and my subsequent hard poweroff and restart: Jun 6 21:54:43 kcuzner-desktop udevd[10448]: inotify_add_watch(6, /dev/dm-2, 10) failed: No such file or directory Jun 6 21:54:43 kcuzner-desktop udevd[10448]: inotify_add_watch(6, /dev/dm-2, 10) failed: No such file or directory Jun 6 21:54:43 kcuzner-desktop udevd[10448]: inotify_add_watch(6, /dev/dm-1, 10) failed: No such file or directory Jun 6 21:54:43 kcuzner-desktop udevd[12419]: inotify_add_watch(6, /dev/dm-0, 10) failed: No such file or directory Jun 6 21:54:43 kcuzner-desktop udevd[10448]: inotify_add_watch(6, /dev/dm-0, 10) failed: No such file or directory Jun 6 22:09:01 kcuzner-desktop CRON[9061]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete) Jun 6 22:17:01 kcuzner-desktop CRON[22142]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jun 6 22:39:01 kcuzner-desktop CRON[26909]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete) Jun 6 22:54:21 kcuzner-desktop kernel: [57905.560822] show_signal_msg: 36 callbacks suppressed Jun 6 22:54:21 kcuzner-desktop kernel: [57905.560828] chromium-browse[9139]: segfault at 0 ip 00007f3a78efade0 sp 00007fff7e2d2c18 error 4 in chromium-browser[7f3a76604000+412b000] Jun 6 23:05:43 kcuzner-desktop kernel: [58586.415158] chromium-browse[21025]: segfault at 0 ip 00007f3a78efade0 sp 00007fff7e2d2c18 error 4 in chromium-browser[7f3a76604000+412b000] Jun 6 23:09:01 kcuzner-desktop CRON[13542]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete) Jun 6 23:12:43 kcuzner-desktop kernel: [59006.317590] usb 2-1.7: USB disconnect, device number 8 Jun 6 23:12:43 kcuzner-desktop kernel: [59006.319672] sd 7:0:0:0: [sdg] Synchronizing SCSI cache Jun 6 23:12:43 kcuzner-desktop kernel: [59006.319737] sd 7:0:0:0: [sdg] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jun 6 23:17:01 kcuzner-desktop CRON[26580]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jun 6 23:19:04 kcuzner-desktop acpid: client connected from 29925[0:0] Jun 6 23:19:04 kcuzner-desktop acpid: 1 client rule loaded Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Successfully made thread 30131 of process 30131 (n/a) owned by '104' high priority at nice level -11. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Supervising 1 threads of 1 processes of 1 users. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Successfully made thread 30162 of process 30131 (n/a) owned by '104' RT at priority 5. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Supervising 2 threads of 1 processes of 1 users. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Successfully made thread 30163 of process 30131 (n/a) owned by '104' RT at priority 5. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Supervising 3 threads of 1 processes of 1 users. Jun 6 23:19:07 kcuzner-desktop bluetoothd[1140]: Endpoint registered: sender=:1.239 path=/MediaEndpoint/HFPAG Jun 6 23:19:07 kcuzner-desktop bluetoothd[1140]: Endpoint registered: sender=:1.239 path=/MediaEndpoint/A2DPSource Jun 6 23:19:07 kcuzner-desktop bluetoothd[1140]: Endpoint registered: sender=:1.239 path=/MediaEndpoint/A2DPSink Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Successfully made thread 30166 of process 30166 (n/a) owned by '104' high priority at nice level -11. Jun 6 23:19:07 kcuzner-desktop rtkit-daemon[1835]: Supervising 4 threads of 2 processes of 1 users. Jun 6 23:19:07 kcuzner-desktop pulseaudio[30166]: [pulseaudio] pid.c: Daemon already running. Jun 6 23:19:10 kcuzner-desktop acpid: client 2942[0:0] has disconnected Jun 6 23:19:10 kcuzner-desktop acpid: client 29925[0:0] has disconnected Jun 6 23:19:10 kcuzner-desktop acpid: client connected from 1286[0:0] Jun 6 23:19:10 kcuzner-desktop acpid: 1 client rule loaded Jun 6 23:19:31 kcuzner-desktop bluetoothd[1140]: Endpoint unregistered: sender=:1.239 path=/MediaEndpoint/HFPAG Jun 6 23:19:31 kcuzner-desktop bluetoothd[1140]: Endpoint unregistered: sender=:1.239 path=/MediaEndpoint/A2DPSource Jun 6 23:19:31 kcuzner-desktop bluetoothd[1140]: Endpoint unregistered: sender=:1.239 path=/MediaEndpoint/A2DPSink Jun 6 23:28:12 kcuzner-desktop kernel: imklog 5.8.6, log source = /proc/kmsg started. Jun 6 23:28:12 kcuzner-desktop rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="1053" x-info="http://www.rsyslog.com"] start Jun 6 23:28:12 kcuzner-desktop rsyslogd: rsyslogd's groupid changed to 103 Jun 6 23:28:12 kcuzner-desktop rsyslogd: rsyslogd's userid changed to 101 Jun 6 23:28:12 kcuzner-desktop rsyslogd-2039: Could not open output pipe '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ] Jun 6 23:28:12 kcuzner-desktop modem-manager[1070]: <info> Loaded plugin Ericsson MBM Jun 6 23:28:12 kcuzner-desktop modem-manager[1070]: <info> Loaded plugin Sierra Jun 6 23:28:12 kcuzner-desktop modem-manager[1070]: <info> Loaded plugin Generic Jun 6 23:28:12 kcuzner-desktop modem-manager[1070]: <info> Loaded plugin Huawei Jun 6 23:28:12 kcuzner-desktop modem-manager[1070]: <info> Loaded plugin Linktop Jun 6 23:28:12 kcuzner-desktop bluetoothd[1072]: Failed to init gatt_example plugin Jun 6 23:28:12 kcuzner-desktop bluetoothd[1072]: Listening for HCI events on hci0 Jun 6 23:28:12 kcuzner-desktop NetworkManager[1080]: <info> NetworkManager (version 0.9.4.0) is starting... Jun 6 23:28:12 kcuzner-desktop NetworkManager[1080]: <info> Read config file /etc/NetworkManager/NetworkManager.conf Jun 6 23:28:12 kcuzner-desktop NetworkManager[1080]: <info> VPN: loaded org.freedesktop.NetworkManager.pptp Jun 6 23:28:12 kcuzner-desktop NetworkManager[1080]: <info> DNS: loaded plugin dnsmasq Jun 6 23:28:12 kcuzner-desktop kernel: [ 0.000000] Initializing cgroup subsys cpuset Jun 6 23:28:12 kcuzner-desktop kernel: [ 0.000000] Initializing cgroup subsys cpu Sorry it's so huge; the restart happens at 23:28:12 I believe and all I see is that chromium segfaulted a few times. I wouldn't think a segfault from an individual program on the computer would crash it, but could that be the issue?

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  • Testdisk won’t list files for an ext4 partition inside a LVM inside a LUKS partition

    - by user1598585
    I have accidentally deleted a file that I want to recover. The partition is an ext4 partition inside an LVM partition that is encrypted with dm-crypt/LUKS. The encrypted LUKS partition is: /dev/sda2 which contains a physical volume, with a single volume group, mapped to: /dev/mapper/system And the logical volume, the ext4 partition is mapped to: /dev/mapper/system-home A # testdisk /dev/mapper/system-home will notice it as an ext4 partition but tells me that the partition seems damaged when I try to list the files. If I # testdisk /dev/mapper/system it will detect all the partitions, but the same happens if I try to list their files. Am I doing something wrong or is it a known bug? I have searched but haven’t found any clue.

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  • How do I set up pairing email addresses?

    - by James A. Rosen
    Our team uses the Ruby gem hitch to manage pairing. You set it up with a group email address (e.g. [email protected]) and then tell it who is pairing: $ hitch james tiffany Hitch then sets your Git author configuration so that our commits look like commit 629dbd4739eaa91a720dd432c7a8e6e1a511cb2d Author: James and Tiffany <[email protected]> Date: Thu Oct 31 13:59:05 2013 -0700 Unfortunately, we've only been able to come up with two options: [email protected] doesn't exist. The downside is that if Travis CI tries to notify us that we broke the build, we don't see it. [email protected] does exist and forwards to all the developers. Now the downside is that everyone gets spammed with every broken build by every pair. We have too many possible pair to do any of the following: set up actual [email protected] email addresses or groups (n^2 email addresses) set up forwarding rules for [email protected] (n^2 forwarding rules) set up forwarding rules for [email protected] (n forwarding rules for each of n developers) Does anyone have a system that works for them?

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  • Centos Xen resizing DomU partition and volume group

    - by thepearson
    I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) | | LogVol00 LogVol01 (swap) (/) I am trying to resize the DomU root Filesystem. (VolGroup00-LogVol01) I realize that I now need to resize the partition XVDA2, however when I try doing this with parted on Dom0 it just tells me "Error: Could not detect file system." So to resize the root part VolGroup-LogVol00 shouldn't the process be: # Shut down DomU xm shutdown domU #Resize Dom0 Logical volume lvextend -L+2G /dev/volumes/domU-vol # Parted parted /dev/volumes/domU-vol # Resize root partition resize 2 START END (This is where I get an error) "Error: Could not detect file system." # add the vm volume group to Dom0 lvm kpartx -a /dev/volumes/domU-vol # resize the domU PV pvresize /dev/mapper/domU-pl (as listed in pvdisplay) # The domU volume group should automatically adjust # resize the DomU lv lvextend -L+2G /dev/VolGroup/LogVol00 And then obviously increase the fs, remove the device from kpartx etc The problem is I dont know how to resize the partition? How do I resize this partition so I can run pvresize on the DomU? Thanks

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  • How to know which block device maps to which physical drive

    - by Karolis T.
    I have a server with software RAID 1, two hot-swap sata disks. One hard drive started showing errors, I'm thinking about removing and replacing it, only problem is that I have no idea which of the two correspond to which devices. And I can't shut the server down to find out. I have /dev/sda and /dev/sdb, /dev/sda is the failing one. Thought about doing something along the lines # mdadm --manage /dev/md0 --remove /dev/sda1 then somehow stop/suspend the drive using tuning software and try to listen which of the two stopped, but that's not gonna work in a noisy server environment. Drive panels have no LEDs. Thanks for any ideas!

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  • NTFS Signature is missing

    - by LuckyBearing
    So I got a new secondary hard drive caddy and formatted it to NTFS. I forgot to partition the drive after formatting, I rebooted and now I can't access the drive that has around 400gb of data because the NTFS Signature is missing. "Error mounting...NTFS signature is missing. Failed to mount '/dev/sdb2': Invalid argument The device '/dev/sdb2' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?" Says the same thing for sdb1. But I think the sdb2 has most, if not all of the copied data. How do I retrieve my data back? I read somewhere I can install ntfs-progs and it will fix the issue. here

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  • CODE PROJECT VIRTUAL TECH SUMMIT ON MOBILE DEVELOPMENT &ndash; ON DEMAND

    - by Tiago Salgado
    Who has not seen the Code Project's Tech Virtual Summit on Mobile Development, you can now see all the sessions on demand. The sessions are: The Mobile Development Landscape Android Push Notifications Beginning Android Flash Development Android for .NET/C# Developers Using MonoDroid iPhone 101: Introduction to iPhone and iOS Development Building Rich Mobile Apps with HTML5, CSS3 and JavaScript Building MVVM apps for Windows Phone 7 Using Panorama and Pivot Controls for WP7 apps Building Data Visualization Applications for Windows Phone 7 To access the sessions, you need to register at the following link: http://www.virtualtechsummits.com/Register.aspx?EventID=11

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  • Device cannot be added on software-raid-1 array on Ubuntu 12.04

    - by George Pligor
    Unfortunately all tutorials I have found online until now on how to setup software-raid-1 are outdated on ubuntu 12.40 My target is to setup it on a system with a secondary disk drive that is already running. Format is not an option! I am trying to follow and adapt from 11.10 to 12.04 the following tutorial: http://www.howtoforge.com/how-to-set-up-software-raid1-on-a-running-lvm-system-incl-grub2-configuration-ubuntu-11.10-p2 On the above tutorial there is a successful command which creates a raid-1 array by setting the first disk drive with the installed system as missing: mdadm --create /dev/md0 --level=1 --raid-disks=2 missing /dev/sdb1 But when the time comes to add the first main drive with the installed system on the raid-array with this command: mdadm --add /dev/md0 /dev/sda1 I receive an error message. The error message says that the device /dev/sda is (which makes sense) busy! Note: hardware raid solution is not available since the system is a laptop with two disk drives! Thank you

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  • How to solve CUDA crash when run CUDA example fluidsGL?

    - by sam
    I use ubuntu 12.04 64 bits with GTX560Ti. I install CUDA by following instruction: wget http: //developer.download.nvidia.com/compute/cuda/4_2/rel/toolkit/cudatoolkit_4.2.9_lin ux_64_ubuntu11.04.run wget http: //developer.download.nvidia.com/compute/cuda/4_2/rel/drivers/devdriver_4.2_linux _64_295.41.run wget http: //developer.download.nvidia.com/compute/cuda/4_2/rel/sdk/gpucomputingsdk_4.2.9 _linux.run chmod +x cudatoolkit_4.2.9_linux_64_ubuntu11.04.run sudo ./cudatoolkit_4.2.9_linux_64_ubuntu11.04.run echo "/usr/local/cuda/lib64" > ~/cuda.conf echo "/usr/local/cuda/lib" >> ~/cuda.conf sudo mv ~/cuda.conf /etc/ld.so.conf.d/cuda.conf sudo ldconfig echo 'export PATH=$PATH:/usr/local/cuda/bin' >> ~/.bashrc chmod +x gpucomputingsdk_4.2.9_linux.run ./gpucomputingsdk_4.2.9_linux.run sudo apt-get install build-essential libx11-dev libglu1-mesa-dev freeg lut3-dev libxi-dev libxmu-dev gcc-4.4 g++-4.4 sed 's/g++ -fPIC/g++-4.4 -fPIC/g' ~/NV IDIA_GPU_Computing_SDK/C/common/common.mk > ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak; mv ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk sed 's/gcc -fPIC/gcc-4.4 -fPIC/g' ~/NV IDIA_GPU_Computing_SDK/C/common/common.mk > ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak; mv ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk sed 's/-L$(SHAREDDIR)\/lib/-L$(SHAREDDIR)\/lib -L\/u sr\/lib\/nvidia-current/g' ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk > ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak; mv ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk sed 's/-L$(SHAREDDIR)\/lib -L\/usr\/lib\/nvidia-current $(NV CUVIDLIB)/-L$(SHAREDDIR)\/lib $(NVCUVIDLIB)/g' ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk > ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak; mv ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk.bak ~/NVIDIA_GPU_Computing_SDK/C/common/common.mk After I run ~/NVIDIA_GPU_Computing_SDK/C/bin/linux/release/./fluidsGL It got stuck even mouse or keyboard couldn't move. How to solve it? Thank you~

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  • Can I install two Ubuntu versions on the same machine

    - by abh
    Hello, I have Ubuntu 10.10 32 bit already installed on my machine. I am using MongoDB and it does not work properly with 32 bit machine. So I want to install 64 bit Ubuntu 10.10 on my system on another partition(So that I can have both 32 bit and 64 bit versions). Is it okay to install both 32 bit and 64 bit. I mean will it give any problem? and on which partition I should install 64 bit version ..my partitions are as follows Filesystem Size Used Avail Use% Mounted on /dev/sda1 37G 11G 25G 30% / none 1.4G 260K 1.4G 1% /dev none 1.4G 776K 1.4G 1% /dev/shm none 1.4G 244K 1.4G 1% /var/run none 1.4G 0 1.4G 0% /var/lock /dev/sda6 129G 73G 50G 60% /home /dev/sda7 127G 76G 45G 64% /vol Waiting for your replies.

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  • Path of md device wrong after reboot

    - by flammi88
    I have to set up a software raid (level1) on a Ubuntu server 12.04. It should serve files in the network via Samba. The server has the following disks: 250gb Sata hdd (Ubuntu is installed on that drive) 2 TB Sata hdd (first disk in raid array, data disk) 2 TB Sata hdd (second data disk) I created one partition on every data disk with the type Linux raid autodetect. In the second step I created the raid1 with the following command: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1 After that, I added the array to the mdconf: mdadm --examine --scan >> /etc/mdadm/mdadm.conf The problem is: After a reboot the array is not available on the path /dev/md0. Instead of that it gets reassembled as /dev/md/0 but it is not very reliable. Has anybody a solution for this issue?

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  • install AMD Driver on HP Pavilion dv6-6051er on ubuntu 13.10 amd64

    - by user1685095
    So... I've tried to follow this instructions After running sudo dpkg -i fglrx*.deb I got a bunch of errors about missing packages, so I've star?d to install them one by one and stuck on this one. Unpacking fglrx-dev (from fglrx-dev_12.104-0ubuntu1_amd64.deb) ... dpkg: dependency problems prevent configuration of fglrx: fglrx depends on lib32gcc1; however: Package lib32gcc1 is not installed. fglrx depends on dkms; however: Package dkms is not installed. dpkg: error processing fglrx (--install): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of fglrx-amdcccle: fglrx-amdcccle depends on fglrx; however: Package fglrx is not configured yet. dpkg: error processing fglrx-amdcccle (--install): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of fglrx-dev: fglrx-dev depends on fglrx; however: Package fglrx is not configured yet. dpkg: error processing fglrx-dev (--install): dependency problems - leaving unconfigured Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Errors were encountered while processing: fglrx fglrx-amdcccle fglrx-dev sudo apt-get install lib32gcc1 Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: fglrx : Depends: dkms but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). So, what sould I do next to install this drivers?

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  • 8 Reasons Why Even Microsoft Agrees the Windows Desktop is a Nightmare

    - by Chris Hoffman
    Let’s be honest: The Windows desktop is a mess. Sure, it’s extremely powerful and has a huge software library, but it’s not a good experience for average people. It’s not even a good experience for geeks, although we tolerate it. Even Microsoft agrees about this. Microsoft’s Surface tablets with Windows RT don’t support any third-party desktop apps. They consider this a feature — users can’t install malware and other desktop junk, so the system will always be speedy and secure. Malware is Still Common Malware may not affect geeks, but it certainly continues to affect average people. Securing Windows, keeping it secure, and avoiding unsafe programs is a complex process. There are over 50 different file extensions that can contain harmful code to keep track of. It’s easy to have theoretical discussions about how malware could infect Mac computers, Android devices, and other systems. But Mac malware is extremely rare, and has  generally been caused by problem with the terrible Java plug-in. Macs are configured to only run executables from identified developers by default, whereas Windows will run everything. Android malware is talked about a lot, but Android malware is rare in the real world and is generally confined to users who disable security protections and install pirated apps. Google has also taken action, rolling out built-in antivirus-like app checking to all Android devices, even old ones running Android 2.3, via Play Services. Whatever the reason, Windows malware is still common while malware for other systems isn’t. We all know it — anyone who does tech support for average users has dealt with infected Windows computers. Even users who can avoid malware are stuck dealing with complex and nagging antivirus programs, especially since it’s now so difficult to trust Microsoft’s antivirus products. Manufacturer-Installed Bloatware is Terrible Sit down with a new Mac, Chromebook, iPad, Android tablet, Linux laptop, or even a Surface running Windows RT and you can enjoy using your new device. The system is a clean slate for you to start exploring and installing your new software. Sit down with a new Windows PC and the system is a mess. Rather than be delighted, you’re stuck reinstalling Windows and then installing the necessary drivers or you’re forced to start uninstalling useless bloatware programs one-by-one, trying to figure out which ones are actually useful. After uninstalling the useless programs, you may end up with a system tray full of icons for ten different hardware utilities anyway. The first experience of using a new Windows PC is frustration, not delight. Yes, bloatware is still a problem on Windows 8 PCs. Manufacturers can customize the Refresh image, preventing bloatware rom easily being removed. Finding a Desktop Program is Dangerous Want to install a Windows desktop program? Well, you’ll have to head to your web browser and start searching. It’s up to you, the user, to know which programs are safe and which are dangerous. Even if you find a website for a reputable program, the advertisements on that page will often try to trick you into downloading fake installers full of adware. While it’s great to have the ability to leave the app store and get software that the platform’s owner hasn’t approved — as on Android — this is no excuse for not providing a good, secure software installation experience for typical users installing typical programs. Even Reputable Desktop Programs Try to Install Junk Even if you do find an entirely reputable program, you’ll have to keep your eyes open while installing it. It will likely try to install adware, add browse toolbars, change your default search engine, or change your web browser’s home page. Even Microsoft’s own programs do this — when you install Skype for Windows desktop, it will attempt to modify your browser settings t ouse Bing, even if you’re specially chosen another search engine and home page. With Microsoft setting such an example, it’s no surprise so many other software developers have followed suit. Geeks know how to avoid this stuff, but there’s a reason program installers continue to do this. It works and tricks many users, who end up with junk installed and settings changed. The Update Process is Confusing On iOS, Android, and Windows RT, software updates come from a single place — the app store. On Linux, software updates come from the package manager. On Mac OS X, typical users’ software updates likely come from the Mac App Store. On the Windows desktop, software updates come from… well, every program has to create its own update mechanism. Users have to keep track of all these updaters and make sure their software is up-to-date. Most programs now have their act together and automatically update by default, but users who have old versions of Flash and Adobe Reader installed are vulnerable until they realize their software isn’t automatically updating. Even if every program updates properly, the sheer mess of updaters is clunky, slow, and confusing in comparison to a centralized update process. Browser Plugins Open Security Holes It’s no surprise that other modern platforms like iOS, Android, Chrome OS, Windows RT, and Windows Phone don’t allow traditional browser plugins, or only allow Flash and build it into the system. Browser plugins provide a wealth of different ways for malicious web pages to exploit the browser and open the system to attack. Browser plugins are one of the most popular attack vectors because of how many users have out-of-date plugins and how many plugins, especially Java, seem to be designed without taking security seriously. Oracle’s Java plugin even tries to install the terrible Ask toolbar when installing security updates. That’s right — the security update process is also used to cram additional adware into users’ machines so unscrupulous companies like Oracle can make a quick buck. It’s no wonder that most Windows PCs have an out-of-date, vulnerable version of Java installed. Battery Life is Terrible Windows PCs have bad battery life compared to Macs, IOS devices, and Android tablets, all of which Windows now competes with. Even Microsoft’s own Surface Pro 2 has bad battery life. Apple’s 11-inch MacBook Air, which has very similar hardware to the Surface Pro 2, offers double its battery life when web browsing. Microsoft has been fond of blaming third-party hardware manufacturers for their poorly optimized drivers in the past, but there’s no longer any room to hide. The problem is clearly Windows. Why is this? No one really knows for sure. Perhaps Microsoft has kept on piling Windows component on top of Windows component and many older Windows components were never properly optimized. Windows Users Become Stuck on Old Windows Versions Apple’s new OS X 10.9 Mavericks upgrade is completely free to all Mac users and supports Macs going back to 2007. Apple has also announced their intention that all new releases of Mac OS X will be free. In 2007, Microsoft had just shipped Windows Vista. Macs from the Windows Vista era are being upgraded to the latest version of the Mac operating system for free, while Windows PCs from the same era are probably still using Windows Vista. There’s no easy upgrade path for these people. They’re stuck using Windows Vista and maybe even the outdated Internet Explorer 9 if they haven’t installed a third-party web browser. Microsoft’s upgrade path is for these people to pay $120 for a full copy of Windows 8.1 and go through a complicated process that’s actaully a clean install. Even users of Windows 8 devices will probably have to pay money to upgrade to Windows 9, while updates for other operating systems are completely free. If you’re a PC geek, a PC gamer, or someone who just requires specialized software that only runs on Windows, you probably use the Windows desktop and don’t want to switch. That’s fine, but it doesn’t mean the Windows desktop is actually a good experience. Much of the burden falls on average users, who have to struggle with malware, bloatware, adware bundled in installers, complex software installation processes, and out-of-date software. In return, all they get is the ability to use a web browser and some basic Office apps that they could use on almost any other platform without all the hassle. Microsoft would agree with this, touting Windows RT and their new “Windows 8-style” app platform as the solution. Why else would Microsoft, a “devices and services” company, position the Surface — a device without traditional Windows desktop programs — as their mass-market device recommended for average people? This isn’t necessarily an endorsement of Windows RT. If you’re tech support for your family members and it comes time for them to upgrade, you may want to get them off the Windows desktop and tell them to get a Mac or something else that’s simple. Better yet, if they get a Mac, you can tell them to visit the Apple Store for help instead of calling you. That’s another thing Windows PCs don’t offer — good manufacturer support. Image Credit: Blanca Stella Mejia on Flickr, Collin Andserson on Flickr, Luca Conti on Flickr     

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  • How to add new partition to RAID-1 array on Redhat FC10?

    - by Peter Scott
    I have a RH FC10 system with RAID 1 partitions, here is mdadm.conf: # mdadm.conf written out by anaconda DEVICE partitions MAILADDR root ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=9588bfe1:ddfd5858:1067c814:ac499922 ARRAY /dev/md3 level=raid1 num-devices=2 metadata=0.90 UUID=3895ca46:c1526588:d48acd7e:c153aa83 ARRAY /dev/md4 level=raid1 num-devices=2 metadata=0.90 UUID=ebd4920f:b46c1f18:2eced24a:a21ca861 ARRAY /dev/md2 level=raid1 num-devices=2 metadata=0.90 UUID=048e8198:5d6d9682:d3a1e5c3:d475ad80 ARRAY /dev/md0 level=raid1 num-devices=2 metadata=0.90 UUID=d89ec2de:079d4be5:e00ee8f5:fcb19188 I want to carve off 500MB from md4 to make a new partition (for an AFS cache). I haven't touched mdadm or any other disk partitioning tools in years. md4 is 50GB and less than 10% used. What's the easiest way of doing this?

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