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• Stop the constant random reboots of my GIGABYTE GA-B75M-D3V

  - by Frederic

  I've got some issues with a new system. It's rebooting constantly. The system consists of a: brand new: Gigabyte GA-B75M-D3V with F9 BIOS (latest) Intel Core i5-3470 Ivy Bridge 2x 8GB G.SKILL Ripjaws 1600MHz memory (mem-tested x-86) coming from a stable system: Creative Soundcard X-FI Titanium Asus Radeon HD4850 OCZ Vertex 3 120G SSD Sata 3 Hard disk 1TB Sata 2 ASUS Blu-ray Drive PSU 400w Connected peripherals : Toshiba tv (displayport on dvi of MB or HD4850) Wired mouse, wireless keyboard (logitech) Bluetooth usb key Azio main problem : it's not possible to read the errors from the MB. nothing on the manual neither on internet. At the beginning, I received a MB with graphic problems and the problem of rebooting. I RMA'd it. The new one doesn't have any graphic problems. but it's still constantly rebooting. I removed everything except the HD, the sound-card, the blu-ray drive and the wireless keyboard. It's still unexpectdly rebooting. I'm running a test with just the motherboard and the HD. I will update this text after the test. I've got some questions : Somebody have an idea of a test? The PSU could cause that problem? I used it a lot of years with the stable system. Update 1: BTW, if anyone has the same problem, the manual won't say it but you'll need to reset the bios between two tests (the screwdriver on the two pins) if you suspect a problem of compatibility .

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• Resuming downloads in Firefox

  - by Kim

  Unfortunately, Firefox still has failed to add the option to resume downloads. I've ran into this problem SO MANY times, and in my previous searches I found posts saying Firefox was going to fix that. As of 3.6.3 they haven't. I just tried Free Download Manager (FDM), again, having the Firefox addon Flashgot use it. The download gets passed to FDM, and fails, giving the error message "access denied, invalid username or password." No password was required. The site I'm trying to get the file from is turbobit.net, which limits downloads speeds to 100kb/sec, and has a 59 second countdown before you get the link. I guess it's transparently using a password on their end. If I just download normally (save to disk) the download starts fine, but it fails after 30 minutes to 1 hour (always different), and my Wi-fi connection will stop briefly - and I have to start all over. So I will never be able to download a large file. I also tried DTA instead of FMD with Flashgot, and I get an "access denied" message in DTA. Again, I reloaded - waited the 59 seconds, and download w/Firefox, and the download starts fine. The failure message in the Firefox Downloads window is "source file at http... could not be read." Any help would be greatly appreciated. When is Firefox going to finally add the ability to resume downloads????? Is there some other software I haven't found using Google that will work?

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• Virtual Windows 2008 Server Activation with ESX

  - by Logman

  I had a decommissioned server (Dell PE2950) that we could still use, it had OEM Windows 2003 Std on it but wanted to use it as a new host with VMware ESX5 to put a couple legacy severs on it. I wiped it clean and maxed out the memory. But when I added the memory I noticed the product key sticker was a "WindowsServer08 Std 1-4cpu" product key, and it also had a Virtual Key. Not sure why it had Win2003 and not Win2008 from the start, but I would like to use that license if I can. The virtual host would stay on the same physical server, so there shouldn't be a problem with licensing... but I do not want to use Hyper-V unless I can not help it. I have installed ESX5 on the server, but I cannot get the Windows 2008 server to activate. The product key is hard to read, and I have checked the key quite a few times. But my question is... Is it because Hyper-V was not installed on the host? But I thought you could use the product key alone on a virtual host? Maybe because I am not using a Dell Windows 2008 disk but iso from MS directly via the Volumne Licensing site? EDIT: well, Im pretty sure I got the product key correct. If its not the product key, could the activation problem be because Im not using hyper-v or maybe the correct install dvd? EDIT2: maybe because I added 28GB of memory? Originally 4GB...

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• What is the best way to connect a 3 switches with a router?

  - by Carlos Morales

  Hello everyone, I'm trying to rebuild the network from my work and I was thinking what is the best way to connect three switches and a router. The router has 4 ports so I thought to connect 2 switches to the router (each switch connected with 2 cables to the router) and then connect the third switch to one of the others with two cables. So is like this, two cables from switch one to the router, two cables from switch two to the router and two cables from switch 3 to switch 1 or 2. So my questions are: Is it better to connect the router to each switch with a cable or the more cables you have the better? If I connect the switch 3 to switch 1 or 2 is it better to connect it with a cable or you get better performance with more cables. If I'm wrong and there is a better or more efficient way to connect them please let me know. The router is a Netgear RP114 (I'll upgrade it to a Sonicwall NSA 240), switch 1 is a Netgear GS748T, switch 2 is a Cisco Catalyst 2924-XL and switch 3 is a D-link DGS-1024D Thank you very much

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• How to get back the themes feature in Windows XP?

  - by Martín M.

  When I try to set a visual style in Windows XP (the standard Luna, for example), I get one of these two: "Access denied" error. It works, but when I restart the computer, I get the Classic look again, with no errors. Also, the "Windows and icons" dropdown is grayed out in the "Appearance". This is a list of things I have tried, with no results: Making sure "Use visual styles on windows" is checked on System Properties Advanced Performance. Restarting the "Themes" service. It starts cleanly, no errors. Applying these two fixes: Kelly's Corner and tweaks.com. Running sfc /scannow and checking the integrity of uxtheme.dll against a clean installation of XP Restoring the whole \Windows\Resources\Themes directory. Creating a new user. The new user does not seem to suffer this problem. Maybe this is the solution, create a new user and migrating all the data, but it would be a pain, and I would prefer reinstalling the whole thing. I am using Windows XP Professional SP3, with no spyware, no virus, and no other visible malfunctions. How can I fix this?

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• Disc drive busy on MacBook, with disc stuck inside.

  - by ayaz

  I have a white MacBook, running Snow Leopard, 10.6.3 with the latest updates. I popped in a DVD that the system failed to mount. I did not see any conspicuous errors. As a result of this failure, the DVD got stuck in the drive. Neither pressing the eject button on the keyboard nor running the diskutil eject command caused the DVD to come out. The commands drutil eject and drutil tray open could not get the DVD to budge at all. The 'mount' and 'eject' buttons on the window for Disk Utility are dimmed out, while it is written in the middle for the DVD drive that that particular disc drive is busy. This is not the first time this has happened with me. I know that I will ultimately have to resort to rebooting the system and holding down the eject button to get the DVD to come out. But, is there any workaround that does not involve rebooting the system and prying the disc out? The drive on this MacBook does not have a needle-pin reset button -- at least, I couldn't find it anywhere. Any help will be greatly appreciated. Many thanks.

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• SQL Server replication and load balance

  - by Ahmed Galal

  I'm running a web service that serves a mobile app on IIS 8 and SQL Server 2014, my service has a massive load and i'm trying to improve performance, most of the load is happening on SQL. i don't think i have a bottleneck, my processor and ram is up to the max and i think my code is not that bad, am already using memcached and other stuff to avoid hitting SQL too much. i know i can always upgrade the server hardware but i already have a spare server that i would like to use, so i was thinking to split the SQL load on the 2 servers. What i was thinking of is to setup replication on the other server and do some load balancing, but am not sure how to do the load balance. I know i can adjust my code to hit the other server for some queries but i was hoping to find a solution that avoid changing my code. So my question is, What are the ways of doing load balancing between 2 SQL servers ? I would appreciate suggestions or best practices or some directions. Thanks.

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• How do you recreate the System Recovery environment in Windows 7?

  - by Howiecamp

  I'm running Windows 7 Home Premium RTM (64-bit) and I want to take advantage of the system recovery tools (eg the Command Prompt) without using the Windows 7 DVD. My understanding is that this environment (WinRE) should be installed to your HDD by default as part of the Windows 7 installation. However, when I hit F8 on boot and select "Repair", I get: Windows failed to start. A recent hardware or software change might be the cause. To fix the problem... Status: 0xc000000e Info: The boot selection failed because a required device is inaccessible. The "Info" line seems like the smoking gun. My next step was to boot from the Windows 7 DVD, and choose "Repair". It indicated my Recovery Environment wasn't on the Windows 7 boot menu (perfect) and offered to fix it. I said yes and rebooted, however same issue as above. In addition, when I booted in to Windows 7 and I looked at the boot menu options, the recovery/repair option was not there. Only my Windows installation. Finally, I ran the Disk Management tool (diskmgmt.msc) and took a look at the contents of my "System Reserved" partition (which was set to "Active" as normal). It's unclear to me what the contents should look like, however it is my understanding that the WinRE environment gets installed to this partition. (As part of the above troubleshooting I followed http://superuser.com/questions/25728/how-to-fix-windows-7-boot-process which lead to http://www.sevenforums.com/tutorials/668-system-recovery-options.html).

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• OC'ing a Sapphire 7950, problems with memory clock

  - by Cliff

  I bought a new rig with sapphire radeon 7950 flex w/ boost. Good scores initially in 3dmark 11, around 7300 stock. Problem is, as soon as i start overclocking, issues arise. the core clock is at 860, but rises to 925 with boost applied in pressured situations. So all the OC tools are showing 925 as base clock for some reason. Ocing the core clock has been no problem though, got up to 1200 pretty stable, but only an incremental increase in 3dmark 11, to 7600 from 7300, which is worrying. The real trouble starts when i start touching the memory clock. As soon as i touch it even by 1 point up to 1251mhz, the performance goes way down. suddenly i score under 5000 graphics in 3dmark11, no matter if its 1251hz or 1500hz. Ive tried adjusting every other parameter, different tools (sapphiretrixx, catalyst, afterburner) all still the same. Tried upping the power, still same. Where is the issue here?

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• how to setup .ssh directory inside an encrypted volume on Mac OSX and still have public key logins?

  - by Vitaly Kushner

  I have my .ssh directory inside an encrypted sparse image. i.e. ~/.ssh is a symlink to /Volumes/VolumeName/.ssh The problem is that when I try to ssh into that machine using a public key I see the following error message in /var/log/secure.log: Authentication refused: bad ownership or modes for directory /Volumes Any way to solve this in a clean way? Update: The permissions on ~/.ssh and authorized_keys are right: > ls -ld ~ drwxr-xr-x+ 77 vitaly staff 2618 Mar 16 08:22 /Users/vitaly/ > ls -l ~/.ssh lrwxr-xr-x 1 vitaly staff 22 Mar 15 23:48 /Users/vitaly/.ssh@ -> /Volumes/Astrails/.ssh > ls -ld /Volumes/Astrails/.ssh drwx------ 3 vitaly staff 646 Mar 15 23:46 /Volumes/Astrails/.ssh/ > ls -ld /Volumes/Astrails/ drwx--x--x@ 18 vitaly staff 1360 Jan 12 22:05 /Volumes/Astrails// > ls -ld /Volumes/ drwxrwxrwt@ 5 root admin 170 Mar 15 20:38 /Volumes// error message sats the problem is with /Volumes, but I don't see the problem. Yes it is o+w but it is also +t which should be ok but apparently isn't. The problem is I can't change /Volumes permissions (or rather shouldn't) but I do want public key login to work. First I thought of mounting the image on other place then /Volumes, but it is automaunted on login by standard OSX mounting. I asked about it here: How to change disk image's default mount directory on osx The only answer I got is "you can't" ;) I could hack my way around, by writing some shellscript that will manually mounting volume at a non-standard location but it would be a gross hack, I'm still looking for a cleaner way to do what I need.

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• how many sites IIS 6 can handle

  - by Sarah Nasir

  Is there a limit for creating Sites in IIS. i have searched and some forums have it in discussion which says there is no limit. Someone mentioned that he has created upto 100,000 sites in IIS 6 but i dont know his server specs though. Personally i feel that whatever the limit of IIS, the resources will be run out well before the limit reaches. how do big sites like blogger and wordpress handle a huge number of sites on their server. Questions: 1) Is there an upper limit for IIS 6.0? if yes then what is it 2) What should be a good number of requests IIS should serve for a decent server? (I am not talking about dynamic requests on server or logs.) 3) Is there a way I can do the test run on my cloud to test the capability of my server. what factors should i keep in view. db request, page size, disk read/writes etc ? Response shall be highly appreciated.

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• how many sites IIS 6 can handle

  - by Sarah Nasir

  Is there a limit for creating Sites in IIS. i have searched and some forums have it in discussion which says there is no limit. Someone mentioned that he has created upto 100,000 sites in IIS 6 but i dont know his server specs though. Personally i feel that whatever the limit of IIS, the resources will be run out well before the limit reaches. how do big sites like blogger and wordpress handle a huge number of sites on their server. Questions: 1) Is there an upper limit for IIS 6.0? if yes then what is it 2) What should be a good number of requests IIS should serve for a decent server? (I am not talking about dynamic requests on server or logs.) 3) Is there a way I can do the test run on my cloud to test the capability of my server. what factors should i keep in view. db request, page size, disk read/writes etc ? Response shall be highly appreciated.

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• What is the best way to connect 3 switches with a router?

  - by Carlos Morales

  Hello everyone, I'm trying to rebuild the network from my work and I was thinking what is the best way to connect three switches and a router. The router has 4 ports so I thought to connect 2 switches to the router (each switch connected with 2 cables to the router) and then connect the third switch to one of the others with two cables. So is like this, two cables from switch one to the router, two cables from switch two to the router and two cables from switch 3 to switch 1 or 2. So my questions are: Is it better to connect the router to each switch with a cable or the more cables you have the better? If I connect the switch 3 to switch 1 or 2 is it better to connect it with a cable or you get better performance with more cables. If I'm wrong and there is a better or more efficient way to connect them please let me know. The router is a Netgear RP114 (I'll upgrade it to a Sonicwall NSA 240), switch 1 is a Netgear GS748T, switch 2 is a Cisco Catalyst 2924-XL and switch 3 is a D-link DGS-1024D Thank you very much

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• COMPAQ Tower No Signal to monitor

  - by Lancelot

  I received a Compaq tower: Compaq Presario SR1224NX Onboard VGA Windows XP SP2 from a friend. My plan was to turn this into an Ubuntu Server. It booted up with no problems even with the Ubuntu live disc. After a normal shutdown (not unplugging the power cord and not doing a hard shutdown with the power button), it would not restart even after SEVERAL attempts. I realized the light next to the power supply would flash very rapidly. I researched and found out it was one of two things: a dead power supply or the cables to the motherboard and to the disks might be faulty, etc. Thus, I checked to ensure the cables were fine(and they were). I purchased a Power Supply (this one has 400 watts, the initial had 250) and installed it. The tower was able to boot into the live disk and everything. After a normal shutdown, it now restarts but is not sending signal to my monitor. I have tried several monitors in which I know work perfectly but not with this tower (I recall that it did show display after replacing the power supply). The monitors are ACER. This is different than most "no Signal" problems since I am not using an external Video Card, this is onboard VGA.

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• Weird mouse behaviour. Debian wheezy

  - by DevNoob

  When I move my mouse slowly over the desktop the pointer jumps often a few pixels (one or two) in the opposite direction of which I move my mouse. Horribly when trying to set the cursor around some semicolons in eclipse. I guess this is the result of a wrong set resolution of it. I suppose this is because the mouse was set initially really fast and even if I do xset 1/2 3, the mouse is just to fast and unprecise for me. It aready tried to configure the xorg.conf like this: Section "InputDevice" Identifier "Configured Mouse" Driver "mouse" Option "Device" "/dev/mouse" Option "Protocol" "Auto" Option "Name" "Logitech G3" Option "Resolution" "2000" EndSection But with no effect. Maybe because there is no /dev/mouse. This ist the content of dev. Maybe you can tell me which one is the mouse. autofs block bsg btrfs-control bus cdrom cdrw char console core cpu cpu_dma_latency disk dvd dvdrw fd fd0 full fuse fw0 hidraw0 hidraw1 hpet input kmsg log loop0 loop1 loop2 loop3 loop4 loop5 loop6 loop7 loop-control MAKEDEV mapper mcelog mem net network_latency network_throughput null nvidia0 nvidiactl oldmem port ppp printer psaux ptmx pts random rfkill root rtc rtc0 sda sda1 sda2 sda3 sda5 sda6 sda7 sda8 sdb sdb1 sg0 sg1 sg2 shm snapshot snd sndstat sr0 stderr stdin stdout tty tty0 tty1 tty10 tty11 tty12 tty13 tty14 tty15 tty16 tty17 tty18 tty19 tty2 tty20 tty21 tty22 tty23 tty24 tty25 tty26 tty27 tty28 tty29 tty3 tty30 tty31 tty32 tty33 tty34 tty35 tty36 tty37 tty38 tty39 tty4 tty40 tty41 tty42 tty43 tty44 tty45 tty46 tty47 tty48 tty49 tty5 tty50 tty51 tty52 tty53 tty54 tty55 tty56 tty57 tty58 tty59 tty6 tty60 tty61 tty62 tty63 tty7 tty8 tty9 ttyS0 ttyS1 ttyS2 ttyS3 uinput urandom usb vcs vcs1 vcs2 vcs3 vcs4 vcs5 vcs6 vcs7 vcsa vcsa1 vcsa2 vcsa3 vcsa4 vcsa5 vcsa6 vcsa7 vga_arbiter vmci vmmon vmnet0 vmnet1 vmnet8 vsock watchdog xconsole zero So my question is: How do I setup my mouse correctly in Debian wheezy?

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• What is the difference between disabling hibernation and idling time for a NAS?

  - by Gary M. Mugford

  I have two D-LINK DNS-323 NAS boxes with two Seagate drives in each. The first one is about a year old, the second one about three months. The first two on Monster are each 1.5T drives while the last two on Origami are 2T drives. I have never been overly happy with the Monster drives but, outside of poor throughput on small files, they have been consistently available to all programs after I put a batch file into my startup to do a directly listing of each. I added the two new drives when I added the Origami box. But, watching the dos box that comes up, I rarely see both listed before the box disappears. Other programs, backups, Belarc, even my file browsers, seem to have a dickens of a time seeing O: and P:. Finally, I decided to go into setup and turn off hibernation. Performance HAS been better since and Belarc, for instance, now sees both drives. At the time of poking around, I noticed an Idle Time feature too. What is the difference between the two settings? And for added points, how much trouble am I in for turning off hibernation? The super bonus round ... anything ELSE I should have done? Thanks in advance, GM

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• CLI package to replace Plesk

  - by dotancohen

  Myself and another programmer are tasked with maintaining a few webservers. I prefer CLI tools, she prefers Plesk. However, I am adamant about not installing Plesk for quite a few reasons. I have written a small Python script for adding new domains, and now I am about to add the ability to configure email addresses while abstracting the details of Postfix from her. Before I go that route, I have googled to see if anything already exists, and am surprised that I have come up with nothing! Are there any mature, stable "control panels" or "server admin" tools like Plesk, but which are accessed via the CLI over SSH? I am looking for the following features: Add / remove / configure domains served by Apache. Add / remove / configure email boxes and mail groups. Add / remove MySQL databases, users, and configure users to databases. Provide basic monitoring of "server health", that is: memory usage, disk usage, CPU usage, bandwidth usage. Possibly set up STFP accounts so that only specific FTP users could access specific /var/www/someSite/ directories. Note that I was unsure if this question is OT for ServerFault. As per the ServerFault about page (There seems to be no more FAQ) this question meets two of the "ask about" criterion and zero of the "don't ask about" with the possible exception of being opinion-based. Therefore, to keep on-topic, I would like to know about the available applications but we should be subjective and less opinionated. Thank you!

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• how to go about scaling a web-application ?

  - by phoenix24

  for someone whoes been primarily a web-application developer, and know not much about scaling/scalability techniques. I'll start by stating my application is written in Python, using Django; a fairly standard setup. I currently use Apache 2.2 for my webserver, and MySql for my database server; both running on the same vps server. Up until now, it was basically a prototype and merely 15-30 concurrent users at any given time; so I had no issues, but now since we'll be adding more users we'll have severe performance issues. So my question is how do i go about scaling my web-application? and my plan is as follows. Now I have just one vps server running, apache + mysql. Next, I plan to add another vps server, to run only MySql; so i'll have one web-server and one db server. Next, I'll add Memcache to the webserver for caching data; and taking some load off mysql. Next, another web-server for serving all the static content; Next, a vps server for load-balancing (nginx/varnish) behind which would be my two web-servers and then db-server. Does that sound like a workable strategy, please guide me around here.

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• All applications quit when printing on imac OS X 10.5.8

  - by Tamany

  I recently ran a software update. I'm not sure if my problems are associated with this but I'm pretty sure they are as I printed successfully before update. I checked the log at time of printing: 03/05/2010 22:03:15 Microsoft Word[697] *** -[NSCFString _getValue:forType:]: unrecognized selector sent to instance 0x17a82b50 03/05/2010 22:03:15 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:16 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:16 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:16 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:16 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:16 [0x0-0x51051].com.microsoft.Word[697] Ignoring Quickdraw drawing between QDBeginCGContext and QDEndCGContext 03/05/2010 22:03:17 [0x0-0x51051].com.microsoft.Word[697] Mon May 3 22:03:17 leopards-imac-2.local Word[697] <Error>: The function `CGPDFDocumentGetMediaBox' is obsolete and will be removed in an upcoming update. Unfortunately, this application, or a library it uses, is using this obsolete function, and is thereby contributing to an overall degradation of system performance. Please use `CGPDFPageGetBoxRect' instead. 03/05/2010 22:22:09 Microsoft Word[697] *** -[NSCFString _getValue:forType:]: unrecognized selector sent to instance 0x1b036500 Any thoughts on how to fix this?

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• Windows 7 boots to black screen with blinking cursor

  - by murgatroid99

  I have an Alienware M17x that dual boots into Ubuntu 11.04 and Windows 7 Home Premium. Currently, the computer starts at the GRUB loader and will boot into Ubuntu, but if I try to boot into Windows, I immediately get a black screen with a blinking cursor in the upper left corner. The output of fdisk -l is Device Boot Start End Blocks Id System /dev/dm-0p1 1 5 40131 de Dell Utility Partition 1 does not start on physical sector boundary. /dev/dm-0p2 6 1918 15360000 7 HPFS/NTFS Partition 2 does not start on physical sector boundary. /dev/dm-0p3 * 1918 64772 504878877+ 7 HPFS/NTFS Partition 3 does not start on physical sector boundary. /dev/dm-0p4 64772 77827 104858625 5 Extended Partition 4 does not start on physical sector boundary. /dev/dm-0p5 64772 67204 19531008 83 Linux /dev/dm-0p6 67204 74498 58593536 83 Linux /dev/dm-0p7 74498 77577 24731648 83 Linux /dev/dm-0p8 77578 77827 2000128 82 Linux swap / Solaris I have used the Windows rescue CD, and run the automatic error fixer until it finds no errors. I have run chkdsk /R on both the main Windows 7 (/dev/dm-0p3) partition and the recovery partition (/dev/dm-0p2). I set the main Windows 7 partition to be active. I also tried running in the recovery console the commands bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd None of these helped and the last set of commands deletes grub, which I then have to reinstall from Ubuntu. I think the last thing I did in windows before this started was install the newest ATI driver for my video card. This would suggest using system restore, and I actually had a restore point earlier (after the problem started), but after whatever I did that restore point does not appear in the list on the recovery disk any more, so I cannot do a system restore. Is there anything else I can try to make Windows boot properly again? Edit: Running the suggested commands bootsect /nt60 c: bcdboot c:\windows /s c: was also ineffective.

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• How to make a Linux software RAID1 detect disc corruption?

  - by Paul

  This is one of the nightmare days: A virtualized server running on a Linux SW-RAID1 runs a VM that exhibits random segfaults in seemingly random codechunks. While debugging I find that a file gives different md5sums on each and every run. Digging deeper I find this: The raw disc partitions that make up the RAID1 mirror contain 2 bit-differences and ca. 9 sectors are completely empty on one disc and filled with data on the other disc. Obviously Linux gives back a sector from a undeterministically chosen disc of the mirror set. So sometimes the same sector is returned OK, sometimes the corrupted is given back. The docs say: RAID cannot and is not supposed to guard against data corruption on the media. Therefore, it doesn't make any sense either, to purposely corrupt data (using dd for example) on a disk to see how the RAID system will handle that. It is most likely (unless you corrupt the RAID superblock) that the RAID layer will never find out about the corruption, but your filesystem on the RAID device will be corrupted. Thanks. That will help me sleep. :-/ Is there a way to have Linux at least detect this corruption by using sector checksumming or something like that? Would this be detected in a RAID5 setup? Is this the moment I wish I used ZFS or btrfs (once it becomes usable without uber-admin capabilities)?

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• SQL Server becomes slow after restart

  - by Tobi DM

  I already posted this one on stackoverflow but someone gave me the hint to that I might have more luck on serverfault. We use SQL Server 2005 on an Windwos Server 2008. Ther Server has 48 GB RAM. SQL Server is configured to use 40 GB RAM. There is only one database hosted (About 70 GB). The only app beside SQL Server is our App-Server which connects the clients to the database. Now we encounter the following problem: After a restart of the server our the performance is great. The server grabs the 40 GB RAM wich it is allowed to and then runs fast as hell. But after about 4 weeks the system becomes slower and slower. The execution of statements (seen in the profiler) is raising slowly. But I cannot see that there is something going wrong on the server. CPU usage is at about 20% I/O also seems to be no Problem The process monitor does also not show that there are strange apps or something like that. Eventlog does also have no interessting messages No open transactions or blockings to see We do not use cursors in our app We tried already the following things without effect: Droped the cache by using the statements DBCC FreeProcCache DBCC FREESYSTEMCACHE('ALL') DBCC DropCleanbuffers Restarted the Appserver we are using. Restart the sql server service But nothing did help exept restarting the whole server. Any ideas?

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• 100% CPU load on Ubuntu 10.04.3 LTS 64bit

  - by deadtired

  I have 2 days since I am trying to fix this issue, with no success. The server is a mysql database server. Hardware: DELL Poweredge 1950, 2x Intel Xeon Quad Core E5345 @ 2.33GHz, 16 Gb mem, 2x 146Gb SAS (software RAID1) Software: Ubuntu 10.04.3 LTS, MySQL 5.1.41 Issue: while mysql is not used and runs with no database, everything seems alright. As soon as I install a database, it has the reason to bring all 8 cores in 100% with low memory consumption. So, you can imagine the load average goes high (I saw 212 load average for the first time). The server doesn't become unresponsive, but you can see it's slow while browsing the project installed. Additional info: the database used is not more than 24MB and it was moved from a server with less resources and a lot more larger databases. So it's not the database/project. my.cnf is not a reason also, as I used both default one and the one I use on the same distribution on another server.What is interesting is that mysql doesn't close any process and runs to the limit of the max_connections. Logs are quiet. Nothing there. I switched to this Ubuntu version after I suspected some problems in the newly Ubuntu 11.10 server. This one worked alright for an hour after I made a kernel upgrade to 3.0.1 (it was using the memory also) I tested disk speed and seems alright. Some more output on the running server: dstat -cndymlp -N total -D total 3: htop command: Idea? Did anyone meet the same problem? Any fix you can think of?

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• Windows 7 Explorer keeps crashing

  - by Daniel Liang

  I currently have an issue with Windows Explorer. It keeps crashing when I browse through a network drive. This is happening on several computers. I have already obtained a crash dump file but it doesn't state much: Microsoft (R) Windows Debugger Version 6.12.0002.633 X86 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [C:\LocalDumps\explorer.exe.3964.dmp] User Mini Dump File with Full Memory: Only application data is available Symbol search path is: SRV*c:\websymbols*http://msdl.microsoft.com/download/symbols Executable search path is: Windows 7 Version 7601 (Service Pack 1) MP (2 procs) Free x86 compatible Product: WinNt, suite: SingleUserTS Machine Name: Debug session time: Mon Oct 21 11:21:30.000 2013 (UTC - 4:00) System Uptime: 0 days 0:06:20.449 Process Uptime: 0 days 0:05:54.000 ................................................................ ................................................................ .... Loading unloaded module list ............. This dump file has an exception of interest stored in it. The stored exception information can be accessed via .ecxr. (f7c.fe4): Access violation - code c0000005 (first/second chance not available) eax=00000000 ebx=07a3f080 ecx=00000400 edx=00000000 esi=00000002 edi=00000000 eip=76e170f4 esp=07a3f030 ebp=07a3f0cc iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246 ntdll!KiFastSystemCallRet: 76e170f4 c3 ret I've already tried removing certain context menu items. I disabled all unnecessary start-up items. Ran memtest86 and it looks fine on that end. It also happens when I browse through my local disk. Can anyone take a look into this? Thanks!

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• How to handle sh: fetch: command not found

  - by Tyler Johnson

  Okay, I'm a noobie. I know how to build and compose a website, but I have no idea what I'm doing when it comes to servers and server commands, etc. I've recently had a problem with all of my sites on our servers going down all at once and then I have to go in and reboot the server for them to come up again. At first this was annoying, but now it is becoming agonizing as it now takes 3-4 reboots for the websites to come back up. I contacted support for my hosting, but they are not being very helpful. They just keep telling me what the issue might be and basically telling me that I'm going to have to look into it and figure it out, which really isn't possible since I know nothing. Anyway, here are the things they said were possible reasons: They said I have "strange logs" in my Apache webserver log, error: sh: fetch: command not found. My php.ini memory limit is: 256M which is very high. It should be 32M or 64M. Server is reaching Max Clients, meaning we have more than 150 visitors at a time. (They supposedly "fixed" this, but the sites/server are still going down) I have some Wordpress sites with plugins getting errors like: PHP Warning: pack(): Type H: illegal hex digit G in... PHP Fatal error: Cannot use object of type stdClass as array in... PHP Fatal error: Maximum execution time of 30 seconds exceeded in... PHP Fatal error: Call to undefined function file_exists() in... PHP Parse error: syntax error, unexpected '<' I know that's a lot, but I really am at wits end and have no idea what to do now. If anyone could maybe give me some advice or point me in the right direction I would greatly appreciate it! Thanks! Oh, and here are the specs for my server: RAM: 2048MB CPU Shares: 40 Primary Disk: 50GB Data Transfer: 75GB Port Speed: 5Mbps

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