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  • Cassandra on heterogeneous servers

    - by happy-coding
    I am currently running 4 cassandra nodes with the following hardware in a Apache Cassandra cluster: AMD Athlon 64 X2 6000+ 8G RAM 750G hard disk It shows not such a good writing performance and a really bad read performance with sometimes also timeouts. I was wondering if it makes sense to add 2 nodes with a different hardware (8 CPUs and more RAM) to improve this. Or does a cassandra cluster works best with the same hardware in every node? Thanks & best regards

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  • Mercurial simultaneous access

    - by mizipzor
    We have a mercurial repository (the stable branch) on a mapped network drive (windows). I want to know what happens if more than one user attempts to push at the same time. Or if someone pulls while another is halfway through a push. Is the mercurial client notified by the OS that the file is in use by another process and bails? Is there a risk that I could corrupt the repository with this setup?

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  • Any new Sony RAID laptops coming after March 2010?

    - by Simon
    My current Sony laptop has RAID 0 (don't worry I back it up 100% every day). I have 2 × 320gb drives giving me 640gb. I want my next laptop to be RAID but with SSD + 500GB drive Unfortunately Sony's current line seems to have abandoned two disk configuations and I really don't want to go to a slower system than I have now. Anybody know if Sony has any RAID laptops (16" or larger) in the pipeline - or do I have to switch to DELL or something else

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  • Windows 7duplicate in boot menu

    - by Mick
    I deploy my Windows 7 with imagex.exe. I do this by means some batch script : Win7_install.bat: cls Diskpart /s Win7_install.txt Imagex /apply Win7_October.wim 1 C: Bcdboot C:\Windows Exit Win7_install.txt: SELECT DISK 0 CLEAN CREATE PARTITION PRIMARY SIZE=102400 SELECT PARTITION 1 FORMAT fs=ntfs LABEL=”SYSTEM” quick ASSIGN LETTER=C CREATE PARTITION PRIMARY SELECT PARTITION 2 FORMAT fs=ntfs LABEL=”DATA” quick SELECT PARTITION 1 ACTIVE EXIT Then after restart I have duplicate entries in boot menu. Anybody have some idea how fix it? Regards

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  • 2Wire USB Network Adapter Not Working With Windows 7

    - by Andrew
    I installed Windows 7 on a separate drive, and everything works fine, but I can't get the above network adapter to work properly. It's displayed in Device Manager as a USB device, and I have the driver that makes it function in Vista, but when I run the Driver Wizard and direct it to directory where I have the Vista driver, it almost immediately says "Can't install driver." Is there any work around to this?

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  • Lubuntu LiveCD disabling auto-mount.

    - by PxE Booter
    In cooperation with my IT teacher we want to boot all PC's in IT class with Lubuntu. I've successfully set up PXE server, but there is one thing that worries us. Harddrives shouldn't be accessible from booted Lubuntu(normal user only). Would adding to fstab something like: /dev/sda1 /Idk/What auto noauto work? I'd like to add that I can uncompress squashfs livecd filesystem. If no, what other solution is there, to block auto-mounting /dev/sda drive?

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  • Ubuntu says FAT16, windows says NTF?

    - by myforwik
    I created a partition on USB harddisk in windows and it reports to be an NTFS partition. Yet in ubuntu 9.10 fdisk says it a FAT16 partition. If I mount with -t ntfs I see nothing, but if I mount without it I see all the files. Can anyone tell me whats going on here? Windows computer disk management definately says its NTFS, and a quick look at the raw data suggests it is NTFS, as I know the FAT16 very well.

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  • Free-space driven log rotation on linux?

    - by kdt
    Someone just asked me 'how long should we keep logs for our application', and my answer was 'until the disk is full' as there's no reason to throw them away other than running out of space. However, standard logrotate wants us to specify a specific period + number of rotations. Is there something similar that would let us say "rotate daily, and keep as much history as you like until there is only 5% space free"? The platform is Redhat Linux.

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  • "An unknown error occurred" while downloading documents

    - by Scarlet Riley
    I have a 3 year old MacBook Pro and lately I've been getting an error message when I try to download something to my machine, this is what it says: Download error /Users/scarletriley/Downloads/the name of document goes here- no spaces of course! could not be opened, because an unknown error occurred. Try saving to a disk first and then opening the file. What does this mean, and what should I do to fix it?

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  • Windows 7 - Stuck at splash screen on cold boot only

    - by Suhan
    Hey guys, Wondering if anyone has any ideas on what's causing my pc to lockup at the splash screen on bootup for 1-3minutes. This ONLY happens on the first power up, subsequent reboots run fine. Running on a Falcon II SSD I did the customary move of files to another drive when i first formatted the ssd. The slow first boot only started happening recently. Thanks in advance!

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  • startup Error for Zend Server CE

    - by Jamison
    Hello! I've got a strange startup error for Zend Server CE - it's probably easy to fix, but I don't have much experience with Zend Server! I'm running the latest OSX 10.6.6 and the latest Zend Server CE for Mac. When I run the "start" command from the command line, here is what I get: /usr/local/zend/bin/apachectl start [OK] spawn-fcgi: child spawned successfully: PID: 4206 /usr/local/zend/bin/shell_functions.rc: line 133: 4210 Bus error $WATCHDOG -i $BINARY 1>&3 2>&4 /usr/local/zend/bin/shell_functions.rc: line 133: 4211 Bus error $WATCHDOG -u $WD_UID -g $WD_GID -s $BINARY 1>&3 2>&4 Starting Zend Server GUI [Lighttpd] [FAILED] /usr/local/zend/bin/lighttpdctl.sh: line 46: 4212 Bus error $WATCHDOG -i $BINARY Starting MySQL SUCCESS! /usr/local/zend/bin/shell_functions.rc: line 133: 4304 Bus error $WATCHDOG -i $BINARY 1>&3 2>&4 /usr/local/zend/bin/shell_functions.rc: line 133: 4425 Bus error $WATCHDOG -u $WD_UID -g $WD_GID -s $BINARY 1>&3 2>&4 Starting Java bridge [FAILED] /usr/local/zend/bin/java_bridge.sh: line 39: 4426 Bus error $WATCHDOG -i $BINARY Zend Server started... The challenge is that ZEND SERVER wont open the GUI with this error, and seemingly I can click on Zend Server in the Applications folder and it opens for a second and immediately closes. I've made sure that Web Sharing is turned off to avoid conflicts, and I've run Disk Utility from my recovery disk to make sure there are no file system errors. Here is what the lines that are referenced in the errors have in terms of code: shell_functions.rc: (starting on line 132 - the error message says line 133...): launch() { if [ -z "$DEBUG" ]; then exec 3>/dev/null 4>&3 else exec 3>&1 4>&2 fi $WATCHDOG -i $BINARY 1>&3 2>&4 RET=$? if [ $RET -eq 0 ];then $ECHO_CMD "$BINARY watchdog is up and running.. ${OK_COLOR}[OK]${T_RESET}" return $RET else #$WATCHDOG -u $WD_UID -g $WD_GID -s $BINARY >> "$PREFIX/logs/watchdog_$BINARY.log" 2>&1 $WATCHDOG -u $WD_UID -g $WD_GID -s $BINARY 1>&3 2>&4 report $? "Starting" fi } _kill() { $WATCHDOG -i $BINARY > /dev/null 2>&1 if [ $? -eq 1 ];then $ECHO_CMD "$BINARY is not running" else $WATCHDOG -t $BINARY > /dev/null 2>&1 report $? "Stopping" fi } lighttpdctl.sh: (starting on line 45 - the error message says line 46...): status() { $WATCHDOG -i $BINARY } case "$1" in start) start status ;; stop) stop ;; restart) stop sleep 1 start ;; status) status ;; *) usage exit 1 esac exit $? java_bridge.sh: (starting on line 38 - the error message says line 39...): status() { $WATCHDOG -i $BINARY } Question: "Watchdog" is library in this zend BIN folder - it seems to handle error reporting? all the errors in my start command seem to deal with this Watchdog thing, but I don't know what to do about it... Thanks!

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  • Read NTFS partition on RHEL 5.8

    - by Alex Farber
    I have RHEL 5.8 64 bit, and NTFS partition on the same disk. How can I get access to this partition? This answer Unable to mount NTFS drive with RHEL 6 doesn't work for me: [root@localhost alex]# rpm -Uvh http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm Retrieving http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm error: skipping http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm - transfer failed - Unknown or unexpected error

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  • How to change a physical partition system to LVM?

    - by Daniel Hernández
    I have a server with Debian that have 3 physical partitions covering all the disk: boot, root y swap. Now I want to replace that partitions with LVM partitions. I know how install Debian with LVM at beginning, but in this case I can't install the system at beginning because the provider gets me a server with remote access and the system installed in this way. How can I change that partitions using only an ssh connection and possibly other remote server where to put some temporal data?

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  • After adding a SSD to my MacBook, the HD never spins down.

    - by Chris Woods
    I added a SSD to my MacBook Pro 17 as the primary drive attached to the SATA controller. I moved the HD to the optical bay using the OptiBay from MCE Technologies which I use for my home directory. The problem I have encountered is the HD seems to never stop spinning. I have modified the sleep settings, hoping one of the various options would solve my problem without success. Any suggestions for me?

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  • MySQL: table is marked as crashed

    - by DrStalker
    After a disk full issue one of the MySQL DBs on the server is coming up with the following error when I try to back it up: [root@mybox ~]# mysqldump -p --result-file=/tmp/dbbackup.sql --database myDBname Enter password: mysqldump: Got error: 145: Table './myDBname/myTable1' is marked as crashed and should be repaired when using LOCK TABLES A bit of investigation shows two tables have this issue. What needs to be done to fix up the damaged tables?

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  • How to slim windows vista after tons of auto update?

    - by royee
    Hi all, I have a 60G for my system drive. But after more than 1 year of use, the windows folder itself becomes 20G after tons of auto update. I know that Windows installer will automatically backup the patched file for future recovery. But I don't need them. How can I slim my system? Thanks in advance!

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  • Question about VMWare thin provisioning

    - by Datapimp23
    I'm playing around with virtual disks and thin provisioning and have a question about it. I've created several disks and allocated space to with thin provisioning. Is it possible to allocate more disk space than the maximum amount of the datastore space. So that for example, my VM's will stop functioning when the disks slowly start filling up?

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  • Streaming audio/video in a publicly-hosted server increases bandwith usage

    - by Eka
    I have a website hosted in a public server (withoud any streaming content) ,using public hosting instead of private because its cheaper. But in public hosting their are limitations when compared to private hosting such as monthly bandwidth usage (1 GB), disk space, cpu usage etc. I am planning to embedd videos and audios (from other websites like youtube) to my already existing website. My question is if a client streams a embedded video/audio (hosted in another website) from my website any change in bandwidth occurs.

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  • How can enable credential manager on windows 7

    - by Bastian
    I have a machine with windows 7 in the domain, in the server we share a folders. The problem is when i try con map a drive in the machine with windows 7 i have acces in the folder but i have to write a username and password of the server everytime that power on the machine. i check the credential manager on control panel and the option is disable and i don't know how to enable it save it and don't write the password every time that i log in

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  • Identify OpenVZ virtual machine from inside

    - by Alfred Godoy
    Is there any way for me to identify which OpenVZ container I am in, from inside the container? I am working on a setup where OpenVZ machines shall boot the same (read-only) disk image, so I can not configure them individually in the file system. I need a unique identification for each of the virtual servers, to be used by scripts running inside the OpenVZ containers. (I'm running Debian Lenny, BTW.)

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  • Is there a compression method for compressing a group of very similar files, without archiving them?

    - by awiebe
    I want to compress a large nuber of files that have near identical headers, and also some data, however I do not wish to archive them, nor do I wish to zip them individually(because the copression ratio would be much higher if substitutions of similar blocks could be done using a single table). Does a compression method exist to do this already, or should I implement it myself. Note: Don't say "Disk space is cheap", because I may want to use this on an embedded system.

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  • From Vista to dual-boot Windows 7/Ubuntu

    - by Juha Syrjälä
    I currently have a laptop with Windows Vista, and I'd like to upgrade to Windows 7 and also install Ubuntu Linux as dual boot. I need to make disk partitions used by Windows smaller to make room for Linux. What is easiest way to upgrade? Should I resize Vista partition first to make room for linux installation, or should I upgrade first to Windows 7 and resize partitions after upgrade.

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  • Can I customize the Summary Network Report in Windows Server 2008?

    - by Xavier
    Hi Guys, We get a weekly Summary Network Report from our SBS 2008 server, delivered by email. The report contains many alerts. We want to ignore some of them so that the report is all green and any alert will stand out. For example, we want to ignore the alert regarding the firewall being off on the server. Is there a place where I can select what points to check and the level of some alerts (such as low remaining disk space), etc?

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