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  • how to limit disk space per user in a PHP web application & CentOS

    - by solid
    we have a web application written in PHP and we want all our users to be able to upload images for e.g. 50MB. We will create a directory structure so that every user has its own folder like app/user1/images app/user2/images ... Now everytime a user uploads an image, we need to check if this is still allowed or not but we don't want 1000 users to continously scan our hard drive counting file sizes in their directory. So writing a script that counts all file sizes in a user directory is not an option I guess? Is there an easier way to calculate used up space per user and limit our app accordingly?

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  • Idle hard disk makes noise.

    - by ULTRA_POROV
    Like a fan or something. I checked it. I stopped all fans (cpu, video, psu) and the noise was still there. I read online that it might be a motor or something. I have put a great deal of effort making my pc quiet. Installed a quiet psu and cpu fan, reduced the fan speed of my video card, bought a ssd... But my drive for data makes this noise. I would never have expected that. Do all hard disks make this kind of noise? I guess most people won't notice it because of the other fans they have in the system, I however can hear it quite clearly because all my other fans are almost silent. So should i get a new one or should i just live with it, considering that i might end up with a drive that also makes this noise.

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  • Using Windows XP Mode Virtual Machine on a Domain

    - by DavidStein
    I've followed the instructions and installed and configured the Windows Virtual PC XP Mode. I've added it as a machine on the network and can log into it and use network resources. In the process I removed the saved credentials, which are just a default local login to the VM. I need to know how to set this so that the VM auto logs in with the domain account credentials used to log into the physical computer. Google hasn't helped me find the answer.

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  • Mac Disk-Utility input/output error

    - by Michelle
    a couple of other people have posted about this but my specific problem has not been addressed. For months I have been backing up DVDs and home movies with no problem then all of a sudden I get an "input/output" error. Yes I have cleaned the disks. Actually I have tried 8 different ones - they are not all bad so its obviously my computer. I have done a scan and cleaned up the HD a bit just in case but nothing is helping. I don't want to download other programs since this one works but seems to be having a problem. Any ideas?

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  • Save Website To Disk

    - by Christian
    Hello everyone! I have a very poor internet connection when I'm living at home. The only time I have a good internet is at college. When I get home, the most mundane task like opening a web-page becomes a five minute stress-test. So what I was thinking was to download the web-page, for example superdickery. I was wondering what the best method would be to download the entire image archive of the page? Would this be illegal, if I did this? It's just that I don't want to be frustrated every time I just want to load a simple jpeg image.

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  • Connect to host computer from Virtual PC 2007

    - by Vegard Larsen
    I am having trouble using my guest (Windows XP SP3) to communicate over TCP/IP to the host computer (Windows 7) using Virtual PC 2007. I have WAMPServer running on my host, and want to be able to access the websites on there from my guest OS. What do I do to make this work? What is the IP address of the host computer when using Shared Networking? As far as I can tell "Internal Networking" won't work, because that only allows communication between the guests, not between a guest and the host.

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  • Server nearly unusable when doing disk writes

    - by Wikser
    My question closely relates to my last question here on serverfault. I was copying about 5GB from a 10 year old desktop computer to the server. The copy was done in Windows Explorer. In this situation I would assume the server to be bored by the dataflow. But as usual with this server, it really slowed down. At least I could work with the remote session, even there was some serious latency. The copy took its time (20min?). In this time I went to a colleague and he tried to log in in the same server via remote desktop (for some other reason). It took about a minute to get to the login screen, a minute to open the control panel, a minute to open the performance monitor, ... Icons were loading maybe one per second. We saw the following (from memory): CPU: 2% Avg. Queue Length: 50 Pages/sec: 115 (?) There was no other considerable activity on the server. The server seldom serves some ASP.NET pages, which became also very slow in this time. The relevant configuration is as follows: Windows 2003 SEAGATE ST3500631NS (7200 rpm, 500 GB) LSI MegaRAID based RAID 5 4 disks, 1 hot spare Write Through No read-ahead Direct Cache Mode Harddisk-Cache-Mode: off Is this normal behaviour for such a configuration? What measurements could give further clues? Is it reasonable to reduce the priority of such copy I/O and favour other processes like the remote desktop? How would you do that? Many thanks!

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  • Testing for disk write

    - by Montecristo
    I'm writing an application for storing lots of images (size <5MB) on an ext3 filesystem, this is what I have for now. After some searching here on serverfault I have decided for a structure of directories like this: 000/000/000000001.jpg ... 236/519/236519107.jpg This structure will allow me to save up to 1'000'000'000 images as I'll store a max of 1'000 images in each leaf. I've created it, from a theoretical point of view seems ok to me (though I've no experience on this), but I want to find out what will happen when there will be directories full of files in there. A question about creating this structure: is it better to create it all in one go (takes approx 50 minutes on my pc) or should I create directories as they are needed? From a developer point of view I think the first option is better (no extra waiting time for the user), but from a sysadmin point of view, is this ok? I've thought I could do as if the filesystem is already under the running application, I'll make a script that will save images as fast as it can, monitoring things as follows: how much time does it take for an image to be saved when there is no or little space used? how does this change when the space starts to be used up? how much time does it take for an image to be read from a random leaf? Does this change a lot when there are lots of files? Does launching this command sync; echo 3 | sudo tee /proc/sys/vm/drop_caches has any sense at all? Is this the only thing I have to do to have a clean start if I want to start over again with my tests? Do you have any suggestions or corrections?

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  • the effect of large number of files on disk space in unix filesystems

    - by user46976
    If I have a text file in Unix that contains N-many independent entries (e.g. records about employees, where each employee has a separate record), is it expected that this file will take up less space than if I split the file into N files, each containing the entry for one employee? in other words, can one save significant space on unix file systems by concatenating many files together, or is the difference negligible? thanks.

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  • Access denied on virtual machine

    - by newbie
    I have a friend on the same network as me hosting a virtual machine using vmware server.The guest OS is Windows 7 and Windows Server 2003.He granted me administrative priveleges for the machine but when i try to add a user to that VM it says access denied. Moreover when i try to start the VM remotely using the command vmrun -T server -h https://computer-name.domain.com:8333/sdk -u domain/user -p passwd start "[standard] Win2k3Client1/Win2k3Client1.vmx" This shows unsufficient priveleges on host operating system but i am able to login with same username password on VMWare Web Access

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  • Mounting an FTP as a virtual disk (FTPDrive analogue)

    - by axk
    FTPDrive has been a great utility for me, but it does not support 64bit Windows 7. The feature of FTPDrive that is useful for me is accesing files from an FTP as local files without pre-downloading so that I can preview and watch movies from a local FTP server without waiting for a full movie to get downloaded first. Do you know of any software which allows accessing files over FTP without pre-downloading? Thanks!

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  • Virtual PC with Multi Monitors

    - by user41013
    Hi I have recently intalled Virtual PC and was wondering if it possible to make use of both of my monitors with it. I have managed to get a pseudo multi screen effect by connecting using Remote Desktop connection, but this isn't really what i wanted. Is this possible? Thanks

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  • Virtual PC with Multi Monitors

    - by user34710
    Hi I have recently intalled Virtual PC and was wondering if it possible to make use of both of my monitors with it. I have managed to get a pseudo multi screen effect by connecting using Remote Desktop connection, but this isn't really what i wanted. Is this possible? Thanks

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  • Virtual Box between differnt PCs

    - by Jim
    I am using Virtual Box machine (as .vdi) on external HDD drive so I can move it between different pcs. On each PC I have created new VM machine, attached that vdi and it seems working well. However, I've noticed that during my last transfer the latest installed applications were not saved on the .vdi, which made me to loose 1 day of work. I don't remember of doing any snapshots which I could merge. Can someone give me a hint how to handle this efficiently in feature?

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  • Booting from virtual machine VMWAre

    - by vikp
    Hi, I have a VMWare virtual machine (windows xp). I have just started it up through the VMWare player and it's extremely slow on my laptop (expected). Is it possible to boot from that image like in mac bootcamp so that it's not virtualised and soo slow? Thank you

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  • How to Define Virtual Host Settings on Ubuntu?

    - by shin
    I use Ubuntu 10.10 on my laptop. I added the following to /etc/apache2/httpd.conf NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot "/var/www/square/public" ServerName square.localhost </VirtualHost> And restarted the apache. I go to http://square.localhost/ and it gives an error telling server not found. Could anyone tell me how to define virtual host settings on Ubuntu please? Thanks in advance.

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  • Relayout LVM Disk

    - by Tom
    I have an Ubuntu 11.10 system with two 500GB disks. The partition tables look like this: /dev/sda1 primary 465.52GB /dev/sda2 extended 243.17MB -> /dev/sda5 logical 243.14MB /dev/sdb1 primary 465.76GB sda1 and sdb1 are in a single LVM physical volume group containing a single logical volume containing a single logical filesystem which is mounted as /. sda5 is mounted as /boot. The problem comes when I want to upgrade to Ubuntu 12.04, which requires at least 247MB free on /boot. So I need to reduce the size of sda1 so that I can increase the size of sda2 and sda5. How the heck do I do that? I can find how to shrink the logical volume group, but I'm not at all clear on how to clear out the end part of sda1 so that I can reduce the physical volume group. Does pvresize just deal with this automagically? Or is that wild wishful thinking? I guess the alternatives are to back everything up onto something or other and recreate the thing from scratch or find out whether GRUB2 supports using LVM for /boot.

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