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• How can we recover/restore lost/overwritten data in our MSSQL 2008 table?

  - by TeTe

  I am in serious trouble and I am seeking professional advices here. We are using MSSQL server 2008. We removed primary key, replaced exiting data with new data resulted losing our critical business data in its child tables on MSSQL Server. It was completely human mistake and we didn't have disk failure. 1) The last backup file was a month ago which means it is useless. 2) We created Maintenance Plans to backup our database at 12AM everyday but those files are nohwere to be found 3) A friend of mine said we can recover from Transaction Logs. When I go to TaskRestore Transaction log is dimmed/disabled. 4) I checked ManagementMaintenance Plans. I can't find any restored point there. It seems that our maintenance plan hasn't been working. Is there any third party tool to recover lost/overwritten data from MSSQL table? Thanks a lot.

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• Does "I securely erased my drive" really work with Truecrypt partitions?

  - by TheLQ

  When you look at Truecrypt's Plausible Deniability page it says that one of the reasons for partition with solely random data is that you securely erased your drive. But what about the partition table with full disk encryption? How can you explain why the partition table says there's a partition of unknown type (With my limited knowledge of partition tables I think that they store all the partition filesystem types) and with solely random data? It seems that if your going to securely erase the drive you would destroy everything, including the partition table. And even if you just wiped the partition, the partition table would still say that the partition was originally NTFS, which it isn't anymore. Does the "I securely erased my drive" excuse still work here? (Note: I know that there's hidden truecrypt volumes, but I'm avoiding them due to the high risk of data loss)

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• When NOT to use virtualisation? [closed]

  - by Nils

  When virtualisation was new, we tried to virtualized everything. Then came the cases where the virtual machine was very much slower than a physical one. It boils down to the following ruleset (with us) when not to virtualize: Network-io-intesive applications (i.e. with many interrupts/packets) Disk-io-intensive (if not on SAN storage) RAM-intensive (this is the most precious resource) Now this is true for a combination of XEN using local DRBD storage. The same seems to be true for Hyper-V using DAS. I wonder - is it true for all combinations - and what are your limits on these combinations?

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• Snapshots are disappearing from Time Machine. Why?

  - by AntonAL

  I have TimeMachine enabled for my external HDD. I'm triggering backups manually 2 times per week. I have noticed, that some snapshots, that i made, are gone. I noticed this behaviour several weeks later, but i had doubts. To make it sure, i've recorded screen video with listing snapshots in TimeMachine. After watching my screen recording today, I'm sure, that for Augusut i had 9 snapshots. Now, i have only 3 of them. What's happening ? I had no crash disk reports, errors etc

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• mongodb replication: no primary elected

  - by Max

  I have three servers with mongod installed on it running as a replication set. Suddenly the two secondories became unavailable (the mongod process died) - I think because they were too stale. The problem is that the original PRIMARY is now the SECONDARY and my application doesn't work because it can't connect to a PRIMARY. I mean, in which way does that help me? If the replica set can't do failover?! Am I missing something? Furhtermore I am asking myself why did the SECONDARIES die / why are they too stale? What can I do about it? FYI: My database is quite big (40GB on disk).

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• Manual vmware image creation

  - by Gzorg

  A laptop hard disk is being defective, but I managed to be lucky enough to get access to it, using an Ubuntu live cd. Now, I think it would be nice to dump the whole thing, using, for instance, a combination of gzip and split. But that would make the resulting files unusable. I could make a VMware image of it instead. I'm currently looking for the answer, which involves finding how vmware manages fixed size virtual partitions, but maybe you already did this before. Thanks.

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• Windows 8.1 reset

  - by CreeperInATardis

  I recently had a massive crash on my Windows 8.1 partition, which has rendered it (practically) unusable. I tried to do a refresh, but the problem is, I have a Windows 8 install disk, not 8.1, and thus it didn't work. I also do not have any system restore points/backups of any sort, but I have managed to move my files off. Also, I do not know where my product key is (and cannot find it online), so a clean reinstall would not work. My question is, is there any way to change my Windows 8 disc into an 8.1 disc to allow me to refresh/reset my PC, or is there any other way to do this (aside from repurchasing?) Thanks!

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• KDE Device Notifier and mounted volumes ownership and permissions

  - by nunomaltez

  Hi, When I plug an USB pen to my PC and mount the device using KDE's Device Notifier, the mounted device is owned by my user, who has write permissions. However, when I connect a USB harddisk and mount a partition in the same way, the mounted device is owned by root, and since the owner is the only one with write permissions I can't write to the disk. How do I configure the device notifier's actions to mount the HD with my user as owner, just like it mounts the USB pen? I'm using Fedora 9.

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• ISCSI sessions appear from nowhere

  - by Maraca

  Hi, I am using Win2008 32bit Ent. running in Hyper-V with 2 LUNs over ISCSI connection (this is a MS cluster with one LUN being quorum and second as a storage). In ISCSI - target - details I see multiple sessions from same target (currently 7), however I am not sure where they are coming from as I have only one virtual NIC on this server. Sure enough 2 LUNs appear 7 times each in device manager or in disk manager. On the cluster partner however, I do not see that problem. There is only one session per target. Installing MPIO makes only difference - I am getting 8 sessions instead of 7 once I reboot. Does any one know what can cause this behavior?

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• Restoring raid 5 array after bios flash

  - by cogergo

  I have just flashed my BIOS and now my machine does not detect my raid5 array! It has three 2TB drives in it so that is a LOT of data that will be lost! I have NOT deleted the array and it does not offer me to reboot I'm using Nvidia MediaShield! and Windows 7. Any ideas guys? Thanks! Update: here is the GUI raid configuration. As you see it shows one disk in the array but for some reason not the other two! Click for image of raid configuration error

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• Preparing a hyper-v VM image

  - by Anteru

  We have a Hyper-V Windows Server 2k3, and we're hosting multiple VMs on it. However, right now, we always start the VM creation right on the server, i.e. when preparing a new Ubuntu image, I just install it into a new VM and set it up and when I'm happy we store the disk image. I wonder if there is a way to prepare a hyper-v image locally on my desktop machine instead? I'm running Windows 7, and I would love to be able to set up a VM so that we can copy the image over to the server and be done with it. This is for linux images only, and we definitely need the hyperv network integration. Is there a recommended way how to prepare hyperv images without running a hyperv instance somewhere?

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• Running nph-script.cgi keeps outputting Server details at the end

  - by wgewweg

  I am running a nph-script.cgi on my server. The server keeps adding HTTP/1.1 200 OK Date: Thu, 05 Nov 2009 02:28:53 GMT Server: Apache/2.2.8 (Ubuntu) PHP/5.2.8-1hardy~ppa1 with Suhosin-Patch mod_perl/2.0.3 Perl/v5.8.8 Content-Length: 0 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/plain X-Pad: avoid browser bug At the bottom of each page loaded via the .cgi script. why is this the case? How do I remove this annoying message that is appended to all pages ?

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• Trying to mount an NFS directory from a Mac with another user

  - by Yair

  I have a username on an ubuntu server, lets call it user a. I want to mount a directory from that server to my Mac, on which I have another username, lets call it user b. My problem is that, after I mount the directory (using the disk utility app) I can view files on the server but can't modify or create new files on it. I checked, and if I change the permissions of the server directory so that its open to everyone (chmod 777), I can write to it. So what I need to know, is how can I specify the username and password in the NFS client when setting up the mount? That is, I want to specify that I'm trying to log in as user a to the server.

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• Friend wants to return an iMac with Lion in it. How does he remove his personal info / do clean install?

  - by fakaff

  I have a Mac, but not Lion, and it seems like a lot has changed with Lion. He wants to return the computer. I told him doing a clean install will make it like new, but he says you can't download a bootable disk image from the appstore to do this. He doesn't want to torrent it because he thinks the store will know it's a ripped version. Is there a way for him to remove his Admin account so that none of his personal info remians on the machine?

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• We want to setup low cost private cloud [closed]

  - by Virtual Jasper

  We are a small company with very limit funds. In order to improve our server reliability, we are studying to migrate to CLOUD. We seen some CLOUD provider, they would charge by resources such as, CPU, RAM.....Disk space....High Availability....etc. We have server team, so we also consider to built the private CLOUD, we seen the Windows 8 server, it does need license fee. So we looking at Linux side, we look at Ubuntu and OpenStack. What is the different between Ubuntu and OpenStack solutions? Is it both free on software license? and only to pay the technical support.

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• Saving backup files automatically in (g)Vim after saving a file.

  - by Somebody still uses you MS-DOS

  I had a problem with my gVim. I lost some important modifications after I plugged on my machine after a hibernating process. To avoid this kind of problem, I would like to know if it's possible to add something in my .vimrc (or a plugin) that automatically backups all saving made to my files. Disk space is not an issue, I can delete these files after. I'm already using set backup set backupdir=~/.backup/vim set directory=~/.swap/vim This creates a myfile.extension~ in my .backup/vim. ...but I would like this configuration to add ~ to first save, ~0 to second, ~1 to third, ~2 to fourth, and so on - something that keeps copies from all modifications I made to a file. Is this possible? Do you know if there's a plugin for this?

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• Weird noise coming out on Windows 7 when harddisk activity at peak?

  - by Curious Apprentice

  I'm having a very strange problem. I'm hearing a "choooooooooo kkkrrr" sound (Its not like the normal sound speakers make when powered on) all the time. When there is more Hard Disk r/w activity the sound increases and as HDD r/w activity slows down so the sound. I have two other OS installed on my system. I have tested, it only happens when I'm on Windows 7. I have no clue what the hell is happening !? Any help would be greatly appreciated. Here's the sample of noise: http://www.ziddu.com/download/20852917/noise.mp3.html

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• Windows XP occasionally hangs for 2-3 minutes as the splash screen fades in.

  - by marcusw

  This is a bit of a rare problem, I have not been able to debug or fix it or find anyone else with the issue. I hope someone here can help me out. Once in a while, I boot up Windows XP from the first partition of the first disk (using grub, the computer dual-boots ubuntu) and it hangs as the Windows XP splash image fades in, leaving the screen with a dim image of the splash screen. After 2-3 minutes, it continues to boot as normal, no error messages or strange behavior. I have noticed that this happens about 75% of the time when the last time the computer was shut down it was from Ubuntu, and maybe 5-10% of the time otherwise. I have looked at system logs as far as I was able, and did not find anything the miss. What is causing this and how can I fix it?

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• Does multi-platter hard-drive use all of their heads to read simultaneously?

  - by WiSaGaN

  Suppose we have a harddisk with 2 platters with characteristics below: Rotational rate: 10, 000 RPM Avg sectors/track: 1000 Surfaces: 4 Sector size: 512 bytes I was reading "Computer Systems: A Programmer's Perspective 2ed" when I found that it calculates transfer time as if it only uses ONE head to read a sector. If that's the case, why not use 4 heads to write(read) on 4 surfaces? So when I write a 2K bytes file, each head should only need to wait for the platters to rotate just one sector length instead of 4, thus reducing the transfer time by a factor of 4. Or even redesign sector to make each sector on one cylinder but on 4 tracks residing same position respectively on 4 surfaces. Each one of (512/4) bytes. So when the hd needs to read a sector of 512 bytes, we only need the disk to rotate roughly 1/4 compare to original time. The idea looks like RAID 0.

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• Apache logging: rotating logs on Win32?

  - by Jason S

  I was noticing my disk space disappearing faster than expected, and finally narrowed it down to a rewrite.log file that was 4 GB in size! Is there a way to rotate the various Apache logs (rewrite, error, access, etc.) on a Win32 PC so that only the most recent entries are there and I can limit the data size that results? I found the bit about log rotation on Apache's website but it's Unix-centric. Edit: I got rotatelogs.exe to work, and it's great except that it slows the server response down noticably so I rejected the idea of using it.

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• What is and what is not replicated in a glassfish cluster with a mod_jk load balancer?

  - by Navigateur

  I have a Glassfish (3.1.2) cluster over 2 computers as nodes, with a mod_jk load balancer. Are servlet instance variables replicated perfectly? If not, how do I make sure it is? Are all actions, including method calls and disk writes, replicated perfectly? If not, how do I make sure they are? These may seem like stupid questions, but I'm not seeking "load balancing" as much as I am seeking exact replication to enable future upgrading without any service interruption. How do I achieve this if it is not already the case?

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• Is it possible to analyze the size of a SubVersion repository?

  - by BrianH

  Is it possible to know how much disk space each project in a SubVersion repository is using? I can check out a working copy of each project and look at the size each project takes up, but I don't think that encompasses the total size of the project (all revisions). I can look under the "db" directory of the repository, but none of the files in there make sense - I don't think it is possible to use them to figure out how much space each project occupies. I tried the svn ls --verbose command, but the size that it gives me is just the size of the actual files in the head revision, I don't think it includes all revisions. Maybe this isn't possible, but I thought I would ask. Thanks in advance!

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• Install Windows 8 (clean) on Hybrid Drive

  - by Ananthakrishnan Ravi

  I have a Sony Vaio T series (UEFI) that consists of a Hybrid Drive (SSD + HDD). I would like to install Windows 8 on the SSD and keep the Program files and other applications on the hard disk. What I could perceive was to keep the SSD as the System Drive. I'm able to install the OS on the SSD, but I run into some issues where I don't see the Microsoft Store App on my system and there are no apps on Windows 8. I tried using this blog post but doesn't seem to fit for Windows 8. Any help in this regard would be great. I would like the Windows 8 alone on the SSD, I don't care about the space wasted on the SSD and install other programs on my HDD. Thanks

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• “BAD” partition showing up in Partition Manager

  - by Quintin Par

  I tried to partition my primary hard disk (NTFS partitions) with qtparted and got stuck in the process. Consequently I had to kill the process and exit my knoppix live CD boot up. Even though I was expecting XP to get corrupted, it booted fine and showed up all the drives accessible. But when I opened this with partition manager 8, it shows up as “BAD”. I ran chkdsk /f without any success. My objective with qparted and partition magic was to resize my existing partitions and add some space to c: How do I fix this problem and resize my partitions? Edit: Here's how my primary drive as per Windows is:

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• Restricting server.log file size (minecraft) in CentOS

  - by MisdartedPenguin

  I'm currently running a bukkit (minecraft) server which generates a server.log file with all the console messages / errors. Every now and then I have a plugin (which i need) that crashes and can cause the server.log file size to increase dramatically. I've had it hit 32GB before which used all my disk space. Is there a way to make it a rolling log (deletes old errors) or be able to limit the file size so it can't go above say 10MB. But the solution needs to not affect how the server runs so it doesn't throw an error when it can't write anymore. Anyway of doing this with CentOS?

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