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• USB-based AV application that restores compromised Windows files from CD/DVD?

  - by overtherainbow

  Hello I just tried a couple of rescue disks (AVG and Kaspersky), and I was wondering if someone knew of a solution that would work like this: The AV solution boots from a USB key, and works entirely from RAM (where the latest virus DB is downloaded) The user inserts his Windows CD/DVD in the drive If any Windows file is compromised, the AV application fetches a clean version from the CD/DVD and restores it on the hard drive optionally, any compromised drive/user-land application is quarantied, and it is up to the user to reinstall those after he successfully rebooted into a restored Windows setup Have you heard of a solution like this? It seems silly to reinstall a whole Windows computer just because one or a few system files were compromised. Thank you.

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• Installing Ubuntu in EFI mode Cant go beyond GRUB Menu

  - by Vulcan

  I created a LiveUSB of Ubuntu 12.04.3 LTS using Pendrive Linux. -Created a separate 30GB partition using Windows 8 Disk Management -Disabled Secure Boot (Didn't find an option to disable EFI boot) -Disabled Fast Startup The laptop starts the GRUB menu shows up but it doesn't go beyond that no matter what option i choose. After choosing any option the screen goes blank but the power is still on i can see the power light. My laptop is HP-n012tx processor- Intel i5 4200U Video Card- 2GBnVidia 740M The GRUB menu i see http://i.stack.imgur.com/buEAn.png

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• Error : [0.8879153] kernel panic -not syncing VFS unable to mount fs unknow block (8.3)

  - by user43069

  i installed ubuntu using wubit inside the windows and started working on it then i got this error afer updating [0.8879153] kernel panic -not syncing VFS unable to mount fs unknow block (8.3) and i can't user rescue mode and it's give me another error no filesystem could mount root ..... i looked at grub folder and didn' find any file on disks/boot/grub/ so i tryed to user super grub to fix it but it didn' work and it keep giving me. boot/grub/stage1 not found i didn't edit anything from grub folder. any idea plz .

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• Debian virtual server hangs on reboot, need help debugging

  - by BubuIIC

  I'm admin of a Debian 6 virtual server. I've been trying to diagnose this problem for a while but haven't gotten anything. The server hangs every time I want to reboot it. All services seem to be shutting down, I lose ssh connection. Then nothing. I have to restart it through the hoster's web-interface, which just gives me the options "Normal Boot" and "Rescue System". Normal boot then brings the server back to life. Possibly (probably?) related, the server does not boot into a newer kernel version, it's running 2.6.18 right now, but installed is actually 2.6.32. I don't know whether it hangs on shutdown or on startup, but booting through the web-interface works (except the kernel part). Am I missing something obvious? Where should I start looking? I have no idea how to diagnose the problem.

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• install ubuntu with windows 7

  - by Olansile Okanlawon

  i finally decided to clear my hard disk and start over again, i need to install both ubuntu 12.04 and windows 7. I currently have two problems: 1. I have installed ubuntu on the fresh 320 GB drive, but when i restart i can't boot into my ubuntu, except i insert the flash drive i used for the installation into my system during d boot process. 2. What's the best and easiest way to install ubuntu 12.04 on a seperate partition, and how do i go about the partitioning

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• A quick look at: sys.dm_os_buffer_descriptors

  - by fatherjack

  SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id ...(read more)

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• Cant get to install menu, liveCD

  - by user204979

  When I tried to run the Ubuntu install disc i get a purple screen with some little images down the bottom, then a flashing cursor for a second and then the screen goes black like there is no in I have tried changing BIOS settings that supposedly interfere, different disk drives and trying to access the advanced menu all to no avail! All the answers for black screens require you to be able to get the menu which i cant! Help would be much appreciated!

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• Analyzing I/O performance in Linux

  <b>cmdln.org:</b> "Monitoring and analyzing performance is an important task for any sysadmin. Disk I/O bottlenecks can bring applications to a crawl. What is an IOP? Should I use SATA, SAS, or FC? How many spindles do I need?"

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• Getting the Most out of Statistics

  Statistics keep track of our data and will tell SQL Server how to make the best optimization decisions. Knowing how they work can make understanding query and performance problems much easier! Free eBook - Performance Tuning with DMVsThis free eBook provides you with the core techniques and scripts to monitor your query execution, index usage, session and transaction activity, disk IO, and more. Download the free eBook.

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• Unable to access “430 GB Volume”

  - by user170924

  Error mounting /dev/sda3 at /media/fehr/D42CAFD92CAFB4C0: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sda3" "/media/fehr/D42CAFD92CAFB4C0"' exited with non-zero exit status 14: The disk contains an unclean file system (0, 0). Metadata kept in Windows cache, refused to mount. Failed to mount '/dev/sda3': Operation not permitted The NTFS partition is in an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the 'ro' mount option.

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• ??????????

  - by Allen Gao

  ???????RAC??????????????????10gR2?11gR1.??????????????CRS???????1.ocssd : ???????????(Node Monitoring)????(Group Management),??CRS????????????????????????,????????????(network heartbeat)?????(disk heartbeat)???,?????????????????????,????????????,??????????????????,?????node kill escalation(???11gR1????????),??????????????????????????(reboot time,???3?)????????:ocssd.bin??????????????????????????,??????????????????????????????,misscount(???30?,??????????????600?),????????????,???????????????????,?????????????2???,??????,??????????????,?????????????????????:ocssd.bin?????????????(Voting File)??????????,?????????????????????????????,disk timeou(???200?),?????????????????????,CRS???[N/2]+1????????,??N??????,??????2.oclsomon:????????ocssd????,????ocssd.bin??????,???????3.oprocd:??????Linux?Unix??,????????????????????????????????,?????????:????????????init.cssd?????????????????????????1.??????2.<crs???>/log/<????>/cssd/ocssd.log3.oprocd.log(/etc/oracle/oprocd/*.log.* ? /var/opt/oracle/oprocd/*.log.*)4.<crs???>/log/<????>/cssd/oclsomon/oclsomon.log5. Oracle OSWatcher ????????????????????1.?ocssd???????????ocssd.log???????,????????????????????????????????,???????,OSW??(traceroute???),???????(cluster interconnect)??????,?????????[ CSSD]2012-03-02 23:56:18.749 [3086] >WARNING: clssnmPollingThread: node <node_name> at 50% heartbeat fatal, eviction in 14.494 seconds[ CSSD]2012-03-02 23:56:25.749 [3086] >WARNING: clssnmPollingThread: node <node_name> at 75% heartbeat fatal, eviction in 7.494 seconds[ CSSD]2012-03-02 23:56:32.749 [3086] >WARNING: clssnmPollingThread: node <node_name>at 90% heartbeat fatal, eviction in 0.494 seconds[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmPollingThread: Eviction started for node <node_name>, flags 0x040d, state 3, wt4c 0[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmDiscHelper: <node_name>, node(4) connection failed, con (1128a5530), probe(0)[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmDiscHelper: node 4 clean up, con (1128a5530), init state 5, cur state 5[CSSD]2012-03-02 23:56:33.243 [3600] >TRACE:   clssnmDoSyncUpdate: Initiating sync 196446491[CSSD]2012-03-02 23:56:33.243 [3600] >TRACE:   clssnmDoSyncUpdate: diskTimeout set to (27000)ms??:???????ocssd.log?????????????????????,?????????????????????ocssd.log???????,??????????????????????????????,OSWatcher??(iostat???),???i/o????????,?????????2010-08-13 18:34:37.423: [    CSSD][150477728]clssnmvDiskOpen: Opening /dev/sdb82010-08-13 18:34:37.423: [    CLSF][150477728]Opened hdl:0xf4336530 for dev:/dev/sdb8:2010-08-13 18:34:37.429: [   SKGFD][150477728]ERROR: -9(Error 27072, OS Error (Linux Error: 5: Input/output errorAdditional information: 4Additional information: 720913Additional information: -1))2010-08-13 18:34:37.429: [    CSSD][150477728](:CSSNM00060: )clssnmvReadBlocks: read failed at offset 17 of /dev/sdb82010-08-13 18:34:38.205: [    CSSD][4110736288](:CSSNM00058: )clssnmvDiskCheck: No I/O completions for 200880 ms for voting file /dev/sdb8)2010-08-13 18:34:38.206: [    CSSD][4110736288](:CSSNM00018: )clssnmvDiskCheck: Aborting, 0 of 1 configured voting disks available, need 12010-08-13 18:34:38.206: [    CSSD][4110736288]###################################2010-08-13 18:34:38.206: [    CSSD][4110736288]clssscExit: CSSD aborting from thread clssnmvDiskPingMonitorThread 2010-08-13 18:34:38.206: [    CSSD][4110736288]###################################2. ?oclsomon???????????oclsomon.log ?????,??????????ocssd????,??ocssd??????(RT)???,?????????????(?cpu)??,?????????????,OSW??(vmstat,top???),?????????3.?oprocd???????????oprocd?????????,?????????oprocd????? Dec 21 16:15:30.369857 | LASTGASP | AlarmHandler:  timeout(2312 msec) exceeds interval(1000 msec)+margin(500 msec).   Rebooting NOW.??oprocd?????????????????????,?????ntp(?????????),??diagwait=13 ????????,??,?????????????,??????CRS,???????????????,??????????????oprocd????,??,?????OSWatcher??(vmstat,top???),??????????????????????????????,????????????????? ???????,??????MOS ???Note 265769.1 :Troubleshooting 10g and 11.1 Clusterware RebootsNote 1050693.1 :Troubleshooting 11.2 Clusterware Node Evictions (Reboots)

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• "shutting down hyper-v virtual machine management service"

  - by icelava

  I have a Windows 2008 R2 server that is a Hyper-V host (Dell PowerEdge T300). Today for the first time I encountered an odd situation; i lost connection with one of the guest machines but logging on physically it seems the guest OS is still running but no longer contactable via the network. I tried to shut down the guest machine (Windows XP) but it would not shut down, getting stuck in a "Not responding" dialog box that cannot be dismissed. I used the Hyper-V management console to reset the machine and it could not get out of resetting state. I tried to save another Windows 2003 guest machine, and it would be progress with its Saving state (0%). The other running Windows 2003 guest was stuck in the logon dialog. My first suspicion is perhaps one of the Windows update patches this week (10 Nov 2011) may something to do with it, which was still pending a system restart. Well, since I could not do anything with Hyper-V i proceeded with the Windows Update restart, and now it is stuck half an hour at "Shutting down hyper-v virtual machine management service" Prior to restarting I did not observe any hard disk errors reported in the system event log; doubt it is a disk-related condition. Shall I force a hard reboot? UPDATE As per answer report, it eventually restarted itself.

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• Oracle VM repository creation seems contradictory to its server pool?

  - by Michael

  I found something contradictory in Oracle VM. Clustered server pool creation in Oracle VM would format my FC LUN as ocfs2 , and start o2cb & ocfs2 services to build cluster environment. After that, when I wanted to create repository on the serverpool, unexpectedly, it told me that the physical disk I chose which is also my FC LUN, already contains a file system. What a contradictory! So what, delete the file system in serverpool? If so, why created it before?! OVM> list physicaldisk Command: list physicaldisk Status: Success Time: 2012-09-10 06:44:42.660 Data: id:0004fb00001800007765e62381895f61 name:OVM_HDS OVM> create serverpool clusterenable=true virtualip=10.84.21.123 physicaldisk=OVM_HDS name=ovmserverpool Serverpool creation took quite a long time since my FC LUN was big. When the creation completed, my FC LUN was created as ocfs2 and o2cb & ocfs2 services were started on my ovm servers successfully. But then repository creation indeed throws me a big surprise ... OVM> create repository serverpool=ovmserverpool physicaldisk=OVM_HDS name=ovmrepo Command: create repository serverpool=ovmserverpool physicaldisk=OVM_HDS name=ovmrepo Status: Failure Time: 2012-09-10 06:23:44.656 Error Msg: com.oracle.ovm.mgr.api.exception.RuleException: OVMRU_002026E Cannot use or delete physical disk: OVM_HDS, it already contains a file system: [Pool filesystem for ovmserverpool] Mon Sep 10 06:23:44 CST 2012 What should I do now? Delete the filesystem using dd command? That would destroy the serverpool, right? I'm really confused. My OVM Manager version is 3.1.1.399 which is the latest. Any tips are appreciated. Thanks.

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• Adaptec 6405 RAID controller turned on red LED

  - by nn4l

  I have a server with an Adaptec 6405 RAID controller and 4 disks in a RAID 5 configuration. Staff in the data center called me because they noticed a red LED was turned on in one of the drive bays. I have then checked the status using 'arcconf getconfig 1' and I got the status message 'Logical devices/Failed/Degraded: 2/0/1'. The status of the logical devices was listed as 'Rebuilding'. However, I did not get any suspicious status of the affected physical device, the S.M.A.R.T. setting was 'no', the S.M.A.R.T. warnings were '0' and also 'arcconf getsmartstatus 1' returned no problems with any of the disk drives. The 'arcconf getlogs 1 events tabular' command gives lots of output (sorry, can't paste the log file here as I only have remote console access, I could post a screenshot though). Here are some sample entries: eventtype FSA_EM_EXPANDED_EVENT grouptype FSA_EXE_SCSI_GROUP subtype FSA_EXE_SCSI_SENSE_DATA subtypecode 12 cdb 28 00 17 c4 74 00 00 02 00 00 00 00 data 70 00 06 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 0 The 'arcconf getlogs 1 device tabular' command reports mediumErrors 1 for two of the disks. Today, I have checked the status of the controller again. Everything is back to normal, the controller status is now 'Logical devices/Failed/Degraded: 2/0/0', the logical devices are also all back to 'Optimal'. I was not able to check the LED status, my guess is that the red LED is off again. Now I have a lot of questions: what is a possible cause for the medium error, why it is not reported by the SMART log too? Should I replace the disk drives? They were purchased just a month ago. The rebuilding process took one or two days, is that normal? The disks are 2 TByte each and the storage system is mostly idling. the timestamp of the logs seem to show the moment of the log retrieval, not the moment of the incident. Please advise, all help is very appreciated.

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• How to disable the RAID in x3400 M2

  - by BanKtsu

  Hi I just wanna disable the default RAID in my server IBM System X3400 M2 Server(7837-24X),i have 3 disk drives SAS. I want to make them a JBOD "Just a Bunch Of Disks", because I want to install in the drive 0 CentOS, and the other two make them cache files for a squid server. I disable the RAID in the BIOS: System Settings/Adapters and UEFI drivers/LSI Logic Fusion MPT SAS Driver -PciRoot(0x0)/Pci(0x3,0X0)/Pci(0x0,0x0) LSI Logic MPT Setup Utility RAID Properties/Delete Array Later I boot the CentOS live CD and install the OS in the drive 0, and the others 2 mounted like this: *LVM Volume Groups vg_proxyserver 139508 lv_root 51200 / ext4 lv_home 84276 /home ext4 lv_swap 4032 Hard Drive sdb(/dev/sdb) free 140011 sdc(/dev/sdc) free 140011 sdd(/dev/sdd) sdd1 500 /boot ext4 sdd2 139512 vg_proxyserver physical volume(LVM) But when I restart the server give me the error: Boot failed Hard Disk 0 UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15130,0X0)) ........PXE-E18:Server response timeout. UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15132,0X0)) ........PXE-E18:Server response timeout. and the OS not start. The IBM force me to do a RAID?,why?

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• "Dictionary problem." Error with VMPlayer

  - by George Mauer

  I'm pretty new to using vmware virtualization (been a virtualbox user) so I'm hoping you guys can help me out. I recently got an external usb disk containing a vm for a client, downloaded vmplayer, set it up with "Open a Virtual Machine", ran it, easy as pie. After working with it a bit this morning, I shut the VM down and now trying to start it back up again I get this: I tried removing the vm from my library, now it happens whenever I try to add it back in. In the meantime, I can still access other virtual machines so it seems like the problem might be with the virtual disk. So two questions: This is obviously not a very helpful error message. Where can I go to get more information? My Application EventLog doesn't contain anything from VMWare. What steps can I take to fix the problem? Edit: A couple more pieces of information. I did not take any snapshots. I don't think VM Player even has that ability. I have a zip file of (what I assume) is the state of the VM when it was sent to me. I cannot unzip it as it is huge and simply requires more HD space than I have available but I did extract the vmx file and examine it. Other than the UUIDs and the fact that mine reads cleanShutdown = "FALSE" they are identical. The log contains the following lines Jun 23 10:11:18.080: vmx| SNAPSHOT: SnapshotConfigInfoRead: Unable to load dict from 'E:....\MachineName.vmsd'. Jun 23 10:11:18.080: vmx| SNAPSHOT: SnapshotConfigInfoRead failed for file 'E:....\MachineName.vmx': Dictionary problem (6) Jun 23 10:11:18.082: vmx| SNAPSHOT: Snapshot_TimeStampTiers failed: Dictionary problem (6)

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• Performance analytics via DBMS "plugins", or other solution

  - by Polynomial

  I'm working on a systems monitoring product that currently focuses on performance at the system level. We're expanding out to monitoring database systems. Right now we can fetch simple performance information from a selection of DBMS, like connection count, disk IO rates, lock wait times, etc. However, we'd really like a way to measure the execution time of every query going into a DBMS, without requiring the client to implement monitoring in their application code. Some potential solutions might be: Some sort of proxy that sits between client and server. SSL might be an issue here, plus it requires us to reverse engineer and implement the network protocol for each DBMS. Plugin for each DBMS system that automatically records performance information when a query comes in. Other problems include "anonymising" the SQL, i.e. taking something like SELECT * FROM products WHERE price > 20 AND name LIKE "%disk%" and producing SELECT * FROM products WHERE price > ? AND name LIKE "%?%", though this shouldn't be too difficult with some clever parsing and regex. We're mainly focusing on: MySQL MSSQL Oracle Redis mongodb memcached Are there any plugin-style mechanisms we can utilise for any of these? Or is there a simpler solution?

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• Random software/shutdown problems Mac mini

  - by Oliver

  Hello I have a Mac mini using OS X 10.5.8. Recently I've been having problems that are becoming increasingly severe. Particular symptoms: Firefox "quits" but the dot on the dock remains. If I try shutting down at this point I can't and have to use the power button. I can't start Firefox either. Significantly higher than normal crash rate for CS4 Illustrator Photoshop and Dreamweaver. If Firefox remains open when sleeping the Mac, on waking up firefox is completely unresponsive and must be restarted. Can cause problem 1. Today I lost all my FTP settings for Dreamweaver CS4 Bluetooth switches on when booting despite being switched off. Network password retention is somewhat erractic. Tried running Apple Hardware Test as described in the manual. Cannot access install disk by pressing D at startup. My pen tablet (Bamboo) lost my preferences. Tried unstalling software and now cannot re-install. I've never had problems of this level outside warranty before so I don't know much about debugging Macs. Solutions attempted: Disable bluetooth (see problem 5) Disable time machine Run appple harware test (see problem 7) Tried using activity monitor but don't know which processes are normal Tried uninstalling more recent software. I don't have any idea what to do. It seems like a hard disk failure but I don't have the know how to continue.

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• How to shrink Windows 7 boot partition with unmovable files.

  - by Alex Che

  I have just bought HP laptop with Windows 7 (64 bit). It has 500 GB HDD with three partitions: small hidden system partition, 12 GiB HP recovery partition, and 450 GiB C: boot partition. I would like to split this large C: partition into two partitions, leaving only 100 GiB for system, and giving the rest to new data partition. Although Windows built-in Disk Management utility has an option to shrink the bootable partition, it only allows me to shrink it roughly by half, even though only 20 GiB on the partition is used. As far as I understand, system unmovable files lie in the middle of the partition, preventing Disk Management utility to do what I want. And since new HP laptops don't come with OS installation disks (they only allow you to create recovery disks youself), I can't just repartition HDD and then reinstall OS. So, is there any way to shrink C: bootable partition and preserve Windows 7 working? P.S.: I have tried to use 3rd party GParted utility, and after shrinking the partition Windows 7 stopped booting with BSOD. System recovery didn't work, and I had to do factory recover. Since this is a long process, I would like to avoid doing it again :) So, please, suggest only proven solutions.

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• Excel techniques for perfmon csv log file analysis

  - by Aszurom

  I have perfmon running against several servers, where I'm outputting to a .csv file data like CPU %time, memory bytes free, hard disk I/O metrics like s/write and writes/s. The ones graphing the SQL servers are also collecting SQL stats. The web servers are collecting .Net relevant stuff. I am aware of PAL, and used it as a template of what data to capture based on server type actually. I just don't think the output it generates is detailed or flexible enough - but it does a pretty remarkable job of parsing logs and making graphs. I'm borderline incompetent with Excel, so I'm hoping to be directed to some knowledge of how to take a perfmon output .csv and mine it in Excel to produce some numbers that are meaningful to me as a sysadmin. I could of course just pick a range of data and assemble a graph out of that and look for spikes and trends, but I'm convinced there is some technique to this that makes it more manageable than looking at a monsterous spreadsheet of numbers and trying to make graphs of it. Plus, it's pretty time consuming and not something I can do as a "take a glance at the servers" sort of routine. I'm graphing CPU, disk use, network b/sec, etc. in Cacti as well, which is nice for seeing big trends. The problem is that it is 5 minute averages, so a server could have a problem but it's intermittent and washes out in a 5 min average. What do you do with perfmon data that I could learn from?

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• BAD ARCHIVE MIRROR using PXE BOOT method

  - by omkar

  i m trying to automatically install UBUNTU on a client PC by using the method of PXE BOOT method....my Objectives are below:- i m following the steps given in this link installation using PXE BOOT INSTALL 1:-the server will have a KICKSTART config file which contains the parameters for the OS installation and the files which are required for the OS installations. 2:-the client will have to detect this configuration along with the setup files and complete the installation without any input from the user. In my server i have installed DHCP3-server,Apache2 and TFTP for helping me with the installation. i have nearly achieved my first objective,i m able to boot my client using the files stored in the server,but during the installation stage it is asking me to "CHOOSE A MIRROR of UBUNTU ARCHIVE".i gave the server's IP address and the path in the server where the files are located but then too its giving me error "BAD ARCHIVE MIRROR". so is it possible that instead of downloading all the files from the internet and storing them on my disk , can i use the files which comes with the UBUNTU-CD, and how to store this files in what format (should i zip them ) on the disk. secondly i am also generating the ks.cfg which i wanted to give to the client for automatic installation of the OS ,so how should the configuration file be given to the installation process.

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• Have set Expiration time: Still getting "Query string present but no explicit expiration time"

  - by oligofren

  I have one local Apache instance running with mod_cache (+ disk & mem) enabled, and it seems to cache content from my appserver fine. My app server sets Expiration headers and Last-modified. Yet, when deploying on a production server with the same modules enabled, I am getting the following error in my logs: blablabla not cached. Reason: Query string present but no explicit expiration time Any clues on why Apache is not caching content? The only difference is the Apache version. Locally I am running 2.2. This is from my config CacheRoot "/var/cache/apache2/" CacheEnable disk / This is example output < HTTP/1.1 200 OK < Date: Mon, 19 Nov 2012 16:09:13 GMT < Server: Sun GlassFish Enterprise Server v2.1.1 < X-Powered-By: Servlet/2.5 < Expires: Tue Nov 20 05:00:00 CET 2012 < Last-Modified: Mon Nov 19 17:09:13 CET 2012 < Cache-Control: no-transform < Content-Type: application/x-javascript < Transfer-Encoding: chunked

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• VSS Post Backup failures for Virtual Server 2005 R2 SP1 virtual machines

  - by califguy4christ

  We've been seeing strange errors with Volume Shadow Copy services on our Virtual Server 2005 R2 SP1 host. It appears to be failing on a strange mountpoint in the C:\WINDOWS\Temp\ folders, which I believe is used by VSS to mount a writeable image file. To summarize: The Microsoft Virtual Server 2005 Writer continually goes into a failed retryable state The Virtual Server log reports errors during the Post Backup phase VSS reports errors backing up a mount point of unknown origins The mount point causes NTFS and ftdisk errors The host is x86 Windows Server 2003 Standard, SP2. The virtual machine is the same. Both use basic disks. Here is the writer state: Writer name: 'Microsoft Virtual Server 2005 Writer' Writer Id: {76afb926-87ad-4a20-a50f-cdc69412ddfc} Writer Instance Id: {78df98e2-bf19-4804-890b-15865efef3bd} State: [11] Failed Last error: Retryable error From the Virtual Server log: Virtual Server - Vss Writer - Event ID: 1035: The VSS writer for Virtual Server failed during the PostBackup phase. The guest shadow copies did not get exposed on the host machine, after mounting all the virtual hard disks of the virtual machine VMACHINE. From the Application log: VSS - None - Event ID: 12290: Volume Shadow Copy Service warning: GetVolumeInformationW( \\?\Volume{fb84bae7-87f5-11dd-9832-001cc4961ca6}\,NULL,0, NULL,NULL,[0x00000000], , 260) == 0x0000045d. hr = 0x00000000. From the System log: Ntfs - Disk - Event ID: 55: The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:\WINDOWS\Temp\ {fb84bae7-87f5-11dd-9832-001cc49.... My current theory is that VSS creates a mount point for an image file of the VHD, then the software panics for some reason, leaving everything in an inconsistent state. Removing the mount point doesn't resolve the problem. All of the other disks check out fine with CHKDSK. There's no exclusion option for VHDs or to turn off online backups. Has anyone seen this kind of thing before or point me in the right direction for getting more information about the mount point and it's origins? I haven't been able to trace what application is creating that mount point.

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• Scripting an automated SQLServer 2008 DR move

  - by ItsAMystery

  Hi All We use the built in logshipping in SQLServer to logship to our DR site but once in a month do a DR test which requires us to move back and forth between our Live and BAckup servers. We run multiple (30) databases on the system so manually backing up the final logs and disabling the jobs is too much work and takes too long. I though no problem, I will script it but have run into trouble with it always complaninig that the final logship is too early to apply even though I dont export the final log until putting the database into norecovery mode. Firstly, does any one no a simple and reliable way of doing this? I have lokoed at some 3rd party software (redgate sqlbackup I think it was) but that didnt make it easy in this situation either. What I want to be able to do is basically run a script (a series of stored procedures) to get me to DR and run another to get me back with no dataloss. My scripts are very simplistic at the moment but here they are: 2 servers Primary Paris Secondary ParisT The StartAgentJobAndWait is a script written by someone else (ta) and just checks the jobs have finished or quits it if it never ends. At the moment I am just using a test database called BOB2 but if I can get it working will pass in the database and job names. from PARIS: /* Disable backup job */ exec msdb..sp_update_job @job_name = 'LSBackup_BOB2', @enabled = 0 exec PARIST.msdb..sp_update_job @job_name = 'LSCopy_PARIS_BOB2', @enabled = 0 exec PARIST.msdb..sp_update_job @job_name = 'LSRestore_PARIS_BOB2', @enabled = 0 exec PARIST.master.dbo.DRStage2 ParisT DRStage2 DECLARE @RetValue varchar (10) EXEC @RetValue = StartAgentJobAndWait LSCopy_PARIS_BOB2 , 2 SELECT ReturnValue=@RetValue if @RetValue = 1 begin print 'The Copy Task completed Succesffuly' END ELSE print 'The Copy task failed, This may or may not be a problem, check restore state of database' SELECT @RetValue = 0 EXEC @RetValue = StartAgentJobAndWait LSRestore_PARIS_BOB2 , 2 SELECT ReturnValue=@RetValue if @RetValue = 1 begin print 'The Restore Task completed Succesffuly' END ELSE print 'The Copy task failed, This may or may not be a problem, check restore state of database' exec PARIS.master.dbo.DRStage3 /* Do the last logship and move it to Trumpington */ BACKUP log "BOB2" to disk='c:\drlogshipping\BOB2.bak' with compression, norecovery EXEC xp_cmdshell 'copy c:\drlogshipping \\192.168.7.11\drlogshipping' EXEC PARIST.master.dbo.DRTransferFinish AS BEGIN restore database "BOB2" from disk='c:\drlogshipping\bob2.bak' with recovery

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• cPanel web servers mounting home partition to a NAS or SAN

  - by Scott

  Hello, I currently have 2 cPanel web servers that are little 1RU dual cpu quad core xeons. They have a lot of resources for processing and handling web requests, and never exceed more than 10% cpu usage. They also have plenty of RAM. The problem is though that they both have RAID 1 160Gb SAS hard disk drives in them that are 75% full, and growing by the day. I didnt think that the amount of disk usage would be so high, but due to the nature of the sites hosted, this has become an issue. The easy fix would be just to upgrade the hard drives to something bigger (probably not of the SAS variety), but I am thinking of keeping the current machines as "processing servers" and buying a central "storage server" with about 12TB of storage. The /home/ partition on each of the 1RU servers would be mounted to a NAS or SAN point on this central storage server. My questions are: - Has anyone got a cPanel setup where they mount /home/ to a NAS or SAN elsewhere? If so, can you provide details as to what you did and how it went :) - Any recommendations on networking? Is gigabit ethernet enough? Is TCP/IP going to be a noticable performance problem? Anyone used a TOE key? - Anyone benchmarked or had any performance issues with SAN over NAS? Any help greatly appreciated. Scott

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