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• Can GnomeKeyring store passwords unencrypted?

  - by antimeme

  I have a Fedora 15 laptop with the root and home partitions encrypted using LUKS. When it boots I have to enter a pass phrase to unlock the master key, so I have it configured to automatically log me in to my account. However, GnomeKeyring remains locked, so I have to enter another pass phrase for that. This is unpleasant and completely pointless since the entire disk is encrypted. I've not been able to find a way to configure GnomeKeyring to store its pass phrases without encryption. For example, I was not able to find an answer here: http://library.gnome.org/users/seahorse-plugins/stable/index.html.en Is there a solution? If not, is there a mailing list where it would be appropriate to plead my case?

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• Web Server Setup

  - by gustyaquino

  Hello, In my workplace, we want to implement your own web server for at leat 100 Apache/PHP/MySQL web pages. My boss is opposed to hiring skilled personnel, he think we can do ourselves. Currently, we are working with hostgator reseller account. I chose CentOS as the operating system, but I don't know the best hardware solution. HP, Dell ? What about the setup on these platforms? Thanks. PS: sorry for my bad english Edit: The purpose of this migration isn't related to performance issues. But independence.

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• what are the rules for SLI ( GTX 550 Ti )

  - by equivalent8

  I got ASUS GTX 550 Ti and I want to SLI it with another graphic card. I heard that not all graphic cards are good idea to SLI, (or not all combinations) because sometimes the final performance could be even worse that with one graphic card. Is that true? What are the rules ? ( maybe chip-set needs to be same or something ? ) I was wondering if you can recommend me what Graphic card should I use as with mine. Should I use same one (GTX 550 Ti) ?

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• Can I install fresh Linux accross partitions (LUKS & LVM) and preserve/use existing home user?

  - by xtian

  With an existing LUKS encrypted logical volume partitioned hard disk dual boot to Windoz and Linux (Fedora 15), is it necessary to "start over" with the LUKS setup when upgrading the system? I recall some note about dividing the Linux installation over different partitions would help to preserve the home data in future update (I can't find this now) Before I try it, is this possible and intended use case for partitioning a Linux installation? # lsblk -fa NAME FSTYPE LABEL MOUNTPOINT sda [80G] +-sda1 [system W95 FAT 32] vfat +-sda2 ext4 /boot +-sda3 [52.4G] crypto_LUKS +-luks-de25ac97-6a32-4b79-a6a0-296a39376b3b (dm-0) LVM2_member +-cryptVG-root (dm-1) [21.5G] ext4 / +-cryptVG-swap (dm-2) [5.4MB] swap [SWAP] +-cryptVG-data (dm-3) [25.6G] ext4 /home

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• cloud hosting with only root partition

  - by user123198

  We are starting a website possibly with couple of thousands hits every day and few thousands registered users. By our hosting provider we were adviced to go with cloud hosting which we can easily expand later if we need. It is Ubuntu 11 running in WM. The problem we run into is the disk is divided only in root and swap partition which is not advised from security point of view. When consulting this with technical support we got the reply that it is not possible to make more partitions and that it is mainly issue with windows server and linux is generally fine. I'm looking here for an advice if we should switch the hosting for perhaps dedicated server where we have the full control or it is something not too be worried about too much.

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• Deleting Windows 8 install

  - by Yann4

  I have a windows 7 pc, and I had installed windows 8 on an SSD, so it was the only partition on that SSD. I've now realised that I never use it, so I went to uninstall it and followed these steps. The PC now boots into 7, as expected, however I can't delete or format the drive that has windows 8 on it. The format dropdown selection is greyed out, and I tried to just simply delete all of the files and use the disk as is, but as windows 8 isn't there, I no longer have rights to delete all of the files, apparently. The drive in question has 3 partitions, one that I made for the win8 system, and 2 smaller system-created partitions (one 300MB recovery and 1 100MB EFI) How do I go about formatting the drive?

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• What's a good box to serve files on my local network, cross platform?

  - by rogpeppe

  I've installed CAT5e cable and gigabit switches in my house with the goal of having an "always-on" file server in the loft, accessible to both my macbook and my partner's Windows box. I'd like to find a solution which: uses minimal power. allows me to access as much disk bandwidth as possible. provides glitch-free file access to both MacOS and Windows. is as cheap as possible, while remaining reliable. Optional, but desirable extras: software or hardware RAID; open source solutions. A SheevaPlug with eSATA seems one possibility, but I'm sure there are any number of other good options.

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• Any recommendations on a NAS for a home-super-user?

  - by marc_s

  Can anyone recommend a good NAS for use in a home-server environment? I would request at least 2, preferably 4 disks, and I am most interested in good to excellent throughput for file-server and backup purposes - don't need any of the fancy media-streaming or -sharing features, that's not of interest to me. For a 4 or more disk solution, support for the various RAID levels (0, 1, 1+0, 5) would be a plus - especially if supported in hardware (rather than just a software emulation). I just need a place to put my collection of data, ISO images, and so forth - and since several external disks (self-built and off-the-shelf) have failed so far, I'm looking into a more reliable solution. Marc

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• I have a 21TB array but only 16TB is visible from Windows

  - by Relentim

  CONTROLLER Raid Controller: 3Ware 9650SE-24M8 Disks: 21 x 1TB RAID5 Stripe 64KB WINDOWS OS: Windows Server 2003 SP2 32x Disk: Dynamic 19557.44GB Volume: Capacity 15832.19GB I guess my array must have a 4KB block size which is limiting it to 16TB. I think I would have to switch to a 64KB block size to be able to see a maximum of 256TB. Or create another unit on my controller to go above 16TB of storage. Unfortunately I have already added over 16TB, ideally I would like to shrink the array and reclaim the 5 disks that aren't doing anything. I don't think this is possible. More likely, can I change the block size so 20TB becomes visible in windows?

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• How to install GRUB command-line tools on OSX?

  - by beakr

  I need access to grub-mkrescue for a project I'm working on. I know that the GRUB command-line tools come builtin to Linux, but how do I get them on OSX? Is there a package? Is it built into the system somewhere? Is there an installer? CLARIFICATION: The question is not about installing GRUB as a bootloader on the Mac. The question is about installing the GRUB command line tools to do things like create bootable disk images of other operating systems.

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• How to disable screens turn off Windows 8.1

  - by Warpzit

  So recently my computer started turning my screen monitors off after a while without activity, if I move the mouse or hit the keyboard they turn back on. I just want them to stay on. My System is windows 8.1 64 bit, I have 2 screens with mini display port and 1 television with hdmi which often is in regular television mode when this issue happens. Now before you jump to conclusions this is what I've tryed: Disabled screen saver Power saving settings to high with following set: Turn of the display: Never Put the computer to sleep: Never Turn off hard disk after: Settings: Never Sleep: Sleep after: Settings: Never Display: Turn off display after: Settings: Never Display: Enable adaptive brightness: Settings: Off Multimedia settings: When sharing media: Settings: Prevent idling to sleep. Any pointers that get me in the right direction will be greatly appreciated.

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• How to prevent Google Toolbar being installed in Portable Firefox?

  - by HyperHacker

  Recently, the campus computers installed Google Toolbar in Firefox. Now, I have no use for this toolbar, so I don't want it there. For that and other reasons, I installed Portable Firefox on a USB stick and use that instead. Somehow, when I log into one of these machines and start Portable Firefox, guess what? "Thank you for installing Google Toolbar." No! I don't want some IT guy choosing what extensions to install on my personal Firefox on my USB stick. I can uninstall it but next time I log in, it comes right back. I suppose PF is for some reason reading things from the local disk, or there's some kind of background process installing it? How do I prevent extensions being installed without my consent?

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• Best way to partition 1 TB (Linux and Windows 7)

  - by Simon

  Is there an intelligent way to partition 1 TB and be prepared for resizing/adding/deleting partitions? I was thinking about LVM, but as far as I remember, Windows 7 can't be installed on logical volume right? For now my plan is: - ~150 GB for Windows 7 and other stuff (Visual Studio..., maybe I'll split it 100/50 or something like that) - simple NTFS - 850 GB = LVM - disk for Linux (Ubuntu) and other stuff virtual machines, etc. I'm mostly interested in how and what tools should I use to get easy in maintain partitions for both systems.

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• Why do I see different TCP behaviour between IIS and FTP server applications on Windows 2003?

  - by rupello

  I am comparing Wireshark traces of a 10MB file download file from: the FileZilla FTP server and IIS (using HTTP) on the same Windows 2003 server. The FTP download performs faster and the trace shows the server behaving as expected, sending more data to the client with every ACK received: Link to full-size image The HTTP server trace shows a more bursty pattern. The timing of the send bursts are sometimes unrelated to any ACKs received from the client (circled in red): Link to full-size image Anyone have a suggestion as to why IIS traffic is having like this? Update: We have tried modifying the http.sys registry settings (setting MaxBytesPerSend to 256k and MaxBufferedSendBytes to 64k as recommended). Changing MaxBytesPerSend does seem to improve performance by increasing the amount of in-flight data , but we still see the same bursty pattern.

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• Download web server structure with empty files

  - by golimar

  I want to make a mirror of a Web server, but downloading the actual files will take too long. So I thought of having just the directory and file structure, and when I need the actual contents of the file, I can download just that file. I have tried wget --spider URL and in a short time it has created in my local disk the directory structure with no files. But I've checked all of wget's or curl's switches and there is nothing like what I need. Can this be done with wget, curl or any other tool?

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• Fastest security check of file tree on NFS

  - by fungs

  I am currently experiencing very bad performance using the following on an NFS network folder: time find . | while read f; do test -L "$f" && f=$(readlink -m $f); grp="$(stat -c %G $f)"; perm="$(stat -c %A $f)"; done Question 1) Within the loop permissions are checked using the variables grp and perm. Is there a way to lower the amount of disc I/O for these kind of checks over the network (e.g. read all meta data at once using find)? Question 2) It seems like the NFS isn't tuned very well, the same operation on a similar network link via SSHFS take only one third of the time. All parameters are auto-negotiated. Any suggestions?

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• How can I disable write protection in my USB flash drive?

  - by 97847658

  My USB flash drive is currently unusable because it somehow (quite suddenly!) became write protected. I have googled around and tried many solutions to this problem, but none of them have worked so far. Here are some of the solutions I've tried: The drive has no tangible switch or button. Formatting the drive won't work, even in command line, even "low level formatting", because the drive is (after all) write protected. Changing certain registry keys to 0 doesn't seem to work. Repair_Neo2.9.exe says "USB Flash Disk not found!" One factor that may make it more difficult to find a solution: I have no idea what the make or model is, because I received the USB flash drive from my university as a gift. So if anyone knows how to find the make and model, that alone might be helpful. Any ideas? Thanks.

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• Why would an ext3 filsystem be rolled back on a Debian VM running in VirtualBox after loss of power to the host

  - by Sevas

  A Debian Virtual machine runs as a Guest VirtualBox VM. It's filesystem is EXT3. The host system loses power and after booting up the host system and guest VM, I find that the VM's filesystem has been rolled back to a previous state, losing changes made to the filesystem some time before losing power. The operations that were rolled back had been fully completed before the loss of power (files fully copied, file handles closed, etc.), but it's possible and even likely that other write operations were occuring on the VM at the point of the crash. So I am trying to figure out if it's the filesystem recovery process that rolls back filesystem operations after encountering corruption post power loss, or is it possibly related to VirtualBox and the way it ignores flush requests for performance gains by default (discussed here) Are there any other factors that would result in the filesystem being rolled back after losing power?

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• How does storage spaces decide where to put my files?

  - by George Duckett

  With Windows 8 Storage Spaces, you can lump many hard disks of varying types, speeds and sizes together to use as a single storage space / logical drive. How does Windows decide what to place where? For example will it move files about depending on frequency of access? Maybe splitting files frequently accessed together between hard disks etc. What does it optimize for? Speed, reliability, etc? If the above is asking too much, can I easily see where the files are physically (on which physical disk)?

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• Turning a running Linux system into a KVM instance on another machine

  - by Charles

  I have two physical machines that I wish to virtualize. I can not (physically) plug the hard drives from either machine into the new machine that will act as their VM host, so I think that copying the entire structure of the system over using dd is out of the question. How can I best go about migrating these machines from their hardware to the KVM environment? I've set up empty, unformatted LVM logical volumes to host their filesystems, with the understanding that giving the VMs a real partition to work with achieves higher performance than sticking an image on the filesystem. Would I be better off creating new OS installs and rsyncing the differences over? FWIW, the two machines to be VM'd are running CentOS 5, and the host machine is running Ubuntu Server 10.04 for no particularly important reason. I doubt this matters too much, as it's still going to be KVM and libvert that matter.

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• How to fix a folder content glitch in a FAT32 filesystem?

  - by kagali-san

  at my 450gb fat32 partition, a directory has a wrong content after improper usb drive disconnect; was: /files (total 250gb) /files/folder/ /files/folder2/ /files/somethn.gs Now: /files/weir?d?name, 5 mb Windows and Linux are saying that most (400 of 450gb) disk space is occupied, but sum of all files/dirs is about 130gb, so it seems that files are still there?. No write attempts since discovery; Rejected tools/methods: chkdsk(Windows7): checking completed, but no changes. fsck.vfat: attempted to ruin drive even more (there is a lot of LFN and unicode names). EasyRecovery. Didn't see the target folder (maybe wrong scan options? tried best match, but not raw scan - it would take days since the drive is usb 5200 rpm..).

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• Recommendations for SSD for server and database use?

  - by Tony_Henrich

  SSDs are a new technology and they are constantly improving. A lot of the posts here were posted in 2009 when SSDs where less mature and not as fast. What was recommend back then is probably out of date today because of better options. The SSD is used to hold SQL Server databases. Size is probably 128G. The database is used with a CMS and web server so web pages need to get their data and render as fast as possible. Which modern SSD is recommended for such a use? Is there an SSD better than Intel X-25 E/M in terms of performance/cost? (I am also evaluating cost between : RAM + UPS (semi persistent) vs SSD for same amount of gigabytes. No RAID is involved)

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• PHP CPU utilization limit

  - by knightrider

  I have done some research on the net regarding the problem. My questions is NOT how to reduce cpu utilization by improving algorithm or improving the performance by using multitasking or limiting CPU per system user. I have a website where user logs in does some processing and logout. The site uses linux server, php and apache. The problem is that I cant control the amount of CPU allocated to each user. ie I want give a guarantee that a user will get say atleast 5% of CPU (assume total number of users is less than 20). How can I do this? Any solution (A php code, apache server settings, or any out of box soln) is welcomed. Thankyou very much for reading this :)

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• Good Choice of Memory for Asus K52F-BBR5

  - by Christopher Painter

  I recently purchased an Asus K52F-BBR5 notebook. It's a basic laptop with an Intel P6100 CPU and Mobile Intel® HM55 Express Chipset. It came with 3GB of DDR3 SODIMM memory and I'd like to expand it to 8GB. I'm a little confused by DDR3 nomenclature and not up to date on my knowledge of chipsets. I'd like to make a good choice when selecting memory for it. Crucial's database suggests using either a PC3-8500 with CAS 7 or a PC3-10600 with a CAS of 9. Is the 8500 better because of it's CAS 7 or will my chipset run the memory async at a higher speed and get better performance? Which would be a better choice for my chipset and CPU? Price difference is negligble.

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• Resize a new database to predicted maximum size

  - by John Oxley

  Currently I have a SQL Server database which is about 2 Gb. I know over the next year it's going to grow to a maximum of about 10Gb. Hard drive space is not an issue in the slightest. Is there a down side to resizing the datafile to 20Gb now, then defragmenting the hard drive? Should I resize the log file to 1Gb as well? Something ridiculously large so that fragmentation doesn't happen there either. With this question I would like to avoid the datafile becoming fragmented on the disk itself, but I don't want to negatively impact performance.

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