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• Xen won't start after it had been working

  - by Paul Tomblin

  I've been setting up this Debian Stable system with a dom0 and 3 domUs. It was working fine for several days, and I'm almost ready to deploy it to the rack. But last night I shut it down with all three domUs still running for the first time, and today when I started it up, xend won't start. In /var/log/messages, I have: Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: blktapctrl: v1.0.0 Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [raw image (aio)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [raw image (sync)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [vmware image (vmdk)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [ramdisk image (ram)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [qcow disk (qcow)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: couldn't find device number for 'blktap0' Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Unable to start blktapctrl and in /var/log/xen/xend.log, I have this: [2010-04-18 12:46:32 3523] INFO (SrvDaemon:219) Xend exited with status 1. [2010-04-18 13:01:34 4255] INFO (SrvDaemon:331) Xend Daemon started [2010-04-18 13:01:34 4255] INFO (SrvDaemon:335) Xend changeset: unavailable. [2010-04-18 13:01:34 4255] INFO (SrvDaemon:342) Xend version: Unknown. [2010-04-18 13:01:34 4255] ERROR (SrvDaemon:353) Exception starting xend (no element found: line 1, column 0) Traceback (most recent call last): File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvDaemon.py", line 345, in run servers = SrvServer.create() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvServer.py", line 251, in create root.putChild('xend', SrvRoot()) File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvRoot.py", line 40, in __init__ self.get(name) File "/usr/lib/xen-3.2-1/lib/python/xen/web/SrvDir.py", line 82, in get val = val.getobj() File "/usr/lib/xen-3.2-1/lib/python/xen/web/SrvDir.py", line 52, in getobj File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvNode.py", line 30, in _ _init__ self.xn = XendNode.instance() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendNode.py", line 709, in instance inst = XendNode() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendNode.py", line 164, in __init__ saved_pifs = self.state_store.load_state('pif') File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendStateStore.py", line 104, in load_state dom = minidom.parse(xml_path) File "/usr/lib/python2.5/xml/dom/minidom.py", line 1915, in parse return expatbuilder.parse(file) File "/usr/lib/python2.5/xml/dom/expatbuilder.py", line 924, in parse result = builder.parseFile(fp) File "/usr/lib/python2.5/xml/dom/expatbuilder.py", line 211, in parseFile parser.Parse("", True) ExpatError: no element found: line 1, column 0 [2010-04-18 13:01:34 4253] INFO (SrvDaemon:219) Xend exited with status 1. Any clues as to what might be going wrong?

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• ESXi 5.5 on unlisted AMD A10 6800K possible?

  - by Erik

  I've done some initial googling.. and found AMD's A10 6800K supports virtualization via AMD-V. I'd like to install ESXI 5.5 on a USB thumbdrive to drive two+ VM's running Lubuntu. Has anyone seen the AMD A10 APU line used for baremetal hosting? AMD A10 APU 6800K 8GB DDR3 non ECC RAM 350GB HDD old spin drive (Sata I?III? unknown) I want to get started but afraid I'll wipe my current linux instance if it goes bad.

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• What's the best way to remotely admin MS ADAM?

  - by Peter

  I am setting up a new MS ADAM instance on a Win 2003 server. I want to be able to manager users and groups from my own Win Xp/7 workstations. What's the best tool for doing this? Is there a way to get just the ADAM ADSIEdit tool on my PC? Thanks!

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• UAC consent.exe doesn't render when remoting

  - by chief7

  Im using remoted desktop to access a Win7 machine. when I ctrl+shift click an icon or right click to run it as administrator nothing happens. I see that a new instance of consent.exe is added to the processes in windows task manager but nothing is rendered to approve the execution.

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• How do the Virtual machine network works ?

  - by Arpit

  I wish to know If I am using 2 VM instance on the same setup and I wish to use heavy data flow between the VMs is there any possibility that I get the Timeout (let say I having one timer on the sending end which stops on getting the ack.) I vague question is How network works in VM . I hope I am clear with the question.

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• How to UNIX sort by one column only?

  - by ssn

  I know that the -k option for the Unix sort allow us to sort by a specific column and all of the following. For instance, given the input file: 2 3 2 2 1 2 2 1 1 1 Using sort -n -k 1, I get an output sorted by the 1st column and then by the 2nd: 1 1 1 2 2 1 2 2 2 3 However, I want to keep the 2nd column ordering, like this: 1 2 1 1 2 3 2 2 2 1 Is this possible with the sort command?

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• Where do I start with a S60 phone?

  - by Yuval

  I just got a used Nokia E65. I'm not familiar with its OS, and the phone came with nothing but the data cable and charger. I really need some tutorials for the basic stuff (for instance, how do I install apps? How do I run them?). Can anyone point me in the right direction?

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• Use hard disk image like a regular hard disk on Linux

  - by jobnoorman

  If you have a hard disk image (including partition table, multiple partitions,...), is it possible to let Linux treat it as a regular hard disk? By "regular hard disk" I mean I would like to have the image show up as, for instance, /dev/hdx and its partitions as /dev/hdx1,... (I know I can mount one of the partitions in the image using "mount -o loop,offset=x ..." but I don't really like this option.)

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• PAE, 60 GB of Memory, 32 bit Windows Server OS vs 64 bit OS

  - by dynback.com

  I have 60 Gb of RAM on server. Windows 2008, 32bit with PAE. One Sql Server 2008 Express Instance can use 1 Gb of RAM. So if I install 60 instances, each can use 1 Gb of RAM, right? And the second question, what will be if I install 64bit system and use many Express instances?

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• Easy Oracle Log-Shipping

  - by ItsAMystery

  Hi All I am looking for a decent way of keeping a secondary Oracle database up to date without exporting and importing the database each time. There are 3 users on the instance that I would essentially like to 'log ship' if thats what it is called on Oracle! Can anyone suggest anything? The database is well under a GB total and we are running 10g express (although I have thought about using 10g standard as we have a spare license). Cheers Chris

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• mysql_upgrade on multiple instances of mysql

  - by Ian

  I'm running 5 instances of mysql (backup replication server), and I need to run mysql_upgrade on server id=3 (port 3303). When i try doing # mysql_upgrade -P3303 The script runs on the #0 (id=0) instance and not #3. Anyone know how I can do this?

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• Why sometimes Windows cannot kill a process?

  - by Néstor Sánchez A.

  Right now I'm trying to Run/Debung my app on VisualStudio, but it cannot create it because the las instance of the app.vshost.exe is still running. Then, by using the Task Manager i'm trying to kill it, but it just remains there with no signal of activity. Beyond that particular case (maybe a VS bug), i'm very curious about the technical reasons why sometimes Windows cannot kill a process??? Can, an enlighted OS related developer, please try to explain? (And please don't start a Unix/Linux/Mac battle against Windows)

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• Looking for a webhost to support SSRS Hosting with SQL Azure

  - by Adrian Grigore

  Since SQL Azure does not currently support SSRS, the only possible workaround is to host my own SSRS server and have it point to my SQL Azure instance for data retrieval. Now, for me it would be total overkill to rent a dedicated server with SQL server on it just for hosting SSRS. Are there any (shared) web hosters that offer SSRS hosting with third party SQL servers? I've already asked discountasp.net, but they don't allow this. Thanks, Adrian

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• Advantages of Ubuntu LTS versions over regular Ubuntu?

  - by Adam Matan

  Do the LTS versions of Ubuntu have any advantages for the non-paying customers (who don't get any support?) From the tech spec only, these versions seem outdated in many aspects - mainly drivers and installed software versions. For instance, My previous (bounty!) problem regarding the AGN 5100 drivers would have been solved under Ubuntu 9.04.

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• inetmgr crashes after adding IIS6 MetabaseCompatibility Role

  - by Josef

  I added the IIS6 MetabaseCompatibility Role to my Server 2008 but can no longer launch inetmgr: IISMANAGER_CRASH IIS Manager terminated unexpectedly. Exception:System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.Web.Management.Host.Shell.ShellApplication.Initialize(Boolean localDevelopmentMode, Boolean resetPreferences) at Microsoft.Web.Management.Host.Shell.ShellApplication.Execute(Boolean localDevelopmentMode, Boolean resetPreferences, Boolean resetPreferencesNoLaunch) Process:InetMgr any ideas? In the meantime, I uninstalled that role but I still don't have an inetmgr (mmc snapin doesn't work either).

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• extension-base file associations

  - by Maurice Perry

  Hi there, I am using ubuntu 9.10, and I would like to associate thunderbird to all the files with the extension .eml. The problem is that is seems that ubuntu is attributing the mime type text/plain to these files, based on their content, which meens that if I set thunderbird as the default application for .eml files, all the other text files (.txt for instance) will be opened with thunderbird. Is it possible to add a rule to impose a mime type based on the file extension, regardless of its content?

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• backup and restoration of a freeipa infrastructure

  - by Sirex

  I'm finding the documentation on ipa server backup and restoration sadly lacking, and being so centrally critical it's not something i'm really happy about shooting in the dark with - could some kind soul more knowledable in the matter please attempt to provide an idiot-proof guide to backing up and restoring of IPA server(s) ? Particularly the main server (the cert signing one). ...We're looking towards rolling out ipa in a two server setup (1 master, 1 replica). I'm using dns srv records to handle failover, hence a loss of the replica isn't a big deal as i could make a new one and force a resync to happen - it's losing the master that bothered me. The thing that i'm really struggling with is locating a step-by-step procedure for backing up and restoring the master server. I'm aware that whole-VM snapshot is the recommended way of doing IPA server backup, but that isn't an option at this time for us. I'm also aware that freeipa 3.2.0 includes some sort of backup command build in, but that isn't in the ipa version of centos, and i don't expect it will be for some time yet. I've been trying many different methods, but none of them seem to restore cleanly, amongst others, i've tried; a command similar to db2ldif.pl -D "cn=directory manager" -w - -n userroot -a /root/userroot.ldif the script from here to produce three ldif files -- one for the domain ({domain}-userroot), and two for the ipa server (ipa-ipaca and ipa-userroot): Most of the restores i've tried have been similar to the form of: ldif2db.pl -D "cn=directory manager" -w - -n userroot -i userroot.ldif which seems to work and reports no errors, but totally borks the ipa install on the machine and i can no longer login with either the admin password on the backed up server, or the one i set it to on installation before attempting the ldif2db command (i'm installing ipa-server and running ipa-server-install, then attempting the restore). I'm not overly bothered about losing the CA, having to rejoin the domain, losing replication etc etc (although it'd be awesome if that could be avoided) but in the instance of the main server dropping i'd really like to avoid having to re-enter all the user/group information. I guess in the instance of losing the main server i could promote the other one and replicate in the other direction, but i've not tried that, either. Has anyone done that ? tl;dr: Can someone provide an idiots guide to backing up and restoring an IPA server (preferably on CentOS 6) in a clear enough way that'd make me feel confident it'll actually work when the dreaded time comes ? Crayons are optional, but appreciated ;-) I can't be the only person struggling with this, seeing how widely used IPA is, surely ?

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• ssh timeout when connecting to ec2 instances

  - by Johnny Wong

  After there has been a timeout on my ssh connection (e.g., left the ssh session running and closed my laptop), it is very difficult to re-login with ssh. I keep getting an ssh timeout error. I tried removing the hostname from the known_host file (per a friend's suggestion) which sometimes helps, but other times doesn't -- and I dont know why This is in connection to accessing my EC2 instance on Amazon. This is driving me nuts -- any help, much appreciated.

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• How to run a Turnkey Linux virtual machine on XenServer?

  - by Jader Dias

  Turnkey Linux distributes Linux virtual machines in a Xen compatible format. I have a XenServer instance running and I would like to run a recently downloaded Turnkey Linux virtual machine on it. But I have never used XenServer before. Can you point me a tutorial specific for this case, since the manual doens't seem to cover it very well?

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• Add the current admin user to SQL Server Express 2008.

  - by BradyKelly

  I have managed (in 'eksperiments') to remove both my Windows users from my SQL Express instance. I am now logged in as windows admin, and have re-created the corresponding SQL login, but I cannot assign sysadmin rights. I get the error: User does not have permission to perform this action. (Microsoft SQL Server, Error: 15247) If admin can't do this, should I start looking for a small animal to sacrifice?

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• How do I use the awesome window manager?

  - by Jason Baker

  I've installed awesome on my Ubuntu laptop, and I like it. But I feel kind of lost. I don't know any keyboard shortcuts and the man pages aren't really any help (for instance, what does Mod4 mean?). Is there any kind of brief introduction to awesome I can read?

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• Shoucast/ICECast stream conversion from MP3 to HE-AAC Stream

  - by Cy

  I have a stream that's being received in MP3 and I'd like to convert it to another stream that will feed another instance of Shoutcast/ICEcast in audio/aacp format. Does anybody knows how to do this?

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• Repair OS From Within VMWare

  - by Zurahn

  I've got a Debian installation in an installation of ESXi that won't boot due to the deletion of a few system files that need to be restored. It would be preferable to at least access the files on the instance, if a repair is impossible. To complicate matters, there isn't enough room on the drive to upload a full distribution to boot from with VMWare disk utility. Any ideas on how to accomplish this?

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• Execute a shell script when growl notification is shown

  - by Mr. Man

  How do you execute a shell script whenever a Growl notification is shown? And make it application specific. For instance, run a the shell script say "You have new mail" whenever a growlMail notification is shown?

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• Set up DNS or F5 VIP to send traffic to a specific port

  - by Sam

  I have a clustered SQL instance set up at SERVER01\dev08 It's assigned to a static port of 1466. Can I set up something which will let users connect to SERVER01 and hit that port? If this is possible, what problems might it create (all traffic coming to this name hitting only one port)? It seems that DNS has nothing to do with ports - nor does the F5 big IP.

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