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  • XCP Project Kronos syslog error: "irq ... : nobody cared" on Dom0 host

    - by Vlad Fedin
    One of our production clusters driven by XCP suddenly went uresponsive. After restart and some investigation we found such logs in dom0 machine syslog: Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659040] irq 339: nobody cared (try booting with the "irqpoll" option) Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659058] Pid: 0, comm: swapper/3 Tainted: G C O 3.2.0-24-generic #37-Ubuntu Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659060] Call Trace: Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659062] <IRQ> [<ffffffff810db37d>] __report_bad_irq+0x3d/0xe0 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659071] [<ffffffff810db605>] note_interrupt+0x135/0x190 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659074] [<ffffffff810d8e69>] handle_irq_event_percpu+0xa9/0x220 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659078] [<ffffffff8130ff3b>] ? radix_tree_lookup+0xb/0x10 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659081] [<ffffffff810d9031>] handle_irq_event+0x51/0x80 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659084] [<ffffffff810dc187>] handle_edge_irq+0x87/0x140 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659089] [<ffffffff813a8829>] __xen_evtchn_do_upcall+0x199/0x250 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659092] [<ffffffff813aa96f>] xen_evtchn_do_upcall+0x2f/0x50 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659096] [<ffffffff81666d3e>] xen_do_hypervisor_callback+0x1e/0x30 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659097] <EOI> [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659104] [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659107] [<ffffffff8100a1d0>] ? xen_safe_halt+0x10/0x20 Oct 26 20:32:03 hetzner-2-mrx kernel: [1797931.659110] [<fff IRQ 339 in cat /proc/interrupts: 339: ... xen-pirq-msi-x eth0 where eth0 is hardware NIC. While host machine seems to hang, guest machines continue to work, so our tiny internal monitoring on one of the virtual hosts logged something like that: [2012-10-26 20:31:51] [OK......] 200 OK : 113159149 ns [2012-10-26 20:32:40] [DISASTER] 500 Can't connect to [hostname]:80 (No route to host) : 47763284432 ns ... [2012-10-26 20:34:40] [DISASTER] 500 Can't connect to [hostname]:80 (No route to host) : 46894835070 ns [2012-10-26 20:34:57] [DISASTER] 500 Can't connect to [hostname]:80 (Bad hostname) : 16821741955 ns ... [2012-10-26 20:38:18] [DISASTER] 500 Can't connect to [hostname]:80 (Bad hostname) : 20103298289 ns [2012-10-26 20:38:37] [DISASTER] 500 Can't connect to [hostname]:80 (Bad hostname) : 17895754943 ns Host and guest OS: Ubuntu 12.04 LTS, 05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection Subsystem: ASUSTeK Computer Inc. Device 8369 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+ Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 17 Region 0: Memory at fe500000 (32-bit, non-prefetchable) [size=128K] Region 2: I/O ports at e000 [size=32] Region 3: Memory at fe520000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: e1000e Kernel modules: e1000e Any hints how to debug this?

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  • Dell "Remote Access Configuration Utility" keeps prompting

    - by Dan
    One of our servers can never reboot without pausing at the BIOS prompt asking to "F1 to continue, F2 to enter setup utility". I have gone into Setup and there is nothing there to stop it prompting for this; I have gone into the Remote Access Configuration Utility (CTRL+E) and have setup some values hoping that because it was setup it would not keep asking, but nope, nothing obvious like "Disable Remote Access Configuration". This is the screen we see: Does anyone know what we can do to let our machine boot cleanly??

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  • Use-cases for assigning multiple IP addresses to 1 NIC

    - by Harry
    What would be some of major use-cases in which you would want to assign multiple IP addresses to your NIC? Knowing of any standard/well-known 'gotchas' associated with each use-case would also be helpful. For example, I heard someone saying that a user with access to such a machine will automatically get access to both networks, which could be a security issue. You can assume a Linux-based environment.

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  • unix script problem

    - by Darie Nicolae
    Hello everyone, I have a simple script which runs on a FreeBSD machine with the following code: #!/bin/sh `sed -i .bak '\:#start 172.0.0.3:,\:#end 172.0.0.3:d' /usr/local/etc/racoon/racoon.conf` echo $? It should delete a block of text between the two patterns. The problem is that if I run the sed command directly from shell it works, if i run the script the return code is 0. Why's that?

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  • Windows Server 2003 port forwarding

    - by Vitor Braga
    Using the "netsh interface portproxy" I added a port forwarding to a Windows Server 2k3. The command "netsh interface portproxy show all" shows the added forwarding. On the other hand, any client connecting to the incoming port will receive a "connection refused" message. netstat also doesn't show the incoming port as listening. The machine firewall is disabled. There is any other way to setup port forwarding on Windows or debugging tips?

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  • How do VirtualBox Snapshots work?

    - by Edward Tanguay
    I've made three snapshots on VirtualBox virtual machine (winxp). I want to go back to Snapshot 2. If I click on "Snapshot 2" and click Start, it goes back to the current state. I can click on "Current State" and "revert to current snapshot" (unclear: what is the "current snapshot", since I have 3 snapshots), but after it is finished, I can't discern what it did exactly and when I click start, it returns to the current state. How do I go back to Snapshot 2?

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  • Samba server with Virtual Box Guest

    - by Anwar Shah
    I want to setup a samba server on My Ubuntu host for My Windows Guest in Virtual Box. I am using Ubuntu 12.04 and Windows version is Windows XP. VirtualBox 4.1.0.0 The Question is : How can I achieve this or Is it possible? Note: I am not trying to use the shared folder feature of Virtual Box. I used that feature already. Please Remember that I have only a physical machine. The other one is virtual.

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  • How can I read password protected Word files on OS X ?

    - by Ohad
    I receive Word documents by mail and read them using the built-in Gmail reader. Sometimes the documents are password protected and I need to obtain access to a Windows machine with Office installed in order to read them. Is there a quicker / less hassle requiring method ? I don't want to have to install Vmware / Parallels nor Office on my fresh and sterile macbook.

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  • How to enable .NET Framework 3.5 on Windows 8 without downloading it?

    - by Diogo
    Since I installed Windows 8 Preview on my personal computer, during the installation of some programs and drivers(Windows 7 ones) started to pop me a message warning that .Net Framework 3.5 was needed: I could use "Install this feature", start to download some dependencies(300MB) and that's it, but I don't want to have to download it every time I want to enable this feature on every machine that I install Windows 8. There is some way to install .Net 3.5 on Windows 8 without having to download the entire Framework from Microsoft?

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  • How to set up a file server in a restricted corporate environment

    - by Emilio M Bumachar
    I work in a big corporation, and the disk space my team gets in the corporate file server is so low, I am considering turning my work PC into a file server. I ask this community for links to tutorials, software suggestions, and advice in general about how to set it up. My machine is an Intel Core2Duo E7500 @ 3GHz, 3 GB of RAM, Running Windows XP Service Pack 3. Upgrading, formatting or installing another OS is out of the question. But I do have Administrator priviledges on the PC, and I can install programs (at least for now). A lot of security software I don't even know about is and must remain installed. But I only need communication whithin the corporate network, which is not restricted. People have usernames (logins) on the corporate network, and I need to use them to restrict access. Simply put, I have a list of logins of team members, and only people in the list should access the files. I have about 150 GB of free disk space. I'm thinking of allocating 100 GB to the team's shared files. I plan monthly backups on machines of co-workers, same configuration. But automation of backups is a nice, unnecessary feature: it's totally acceptable for me to manually copy the contents to a different machine once a month. Uptime is important, as everyone would use these files in their daily work. I have experience as a python and C programmer, but no experience whatsoever as a sysadmin, and almost nothing of my programming experience is network programming. I'm a complete beginner in this. Thanks in advance for any help. EDIT I honestly appreciate all the warnings, I really do, but what I plan to make available is mostly stuff that now is solely on DVDs just for space reasons. It's 'daily work' to read them, but 'daily work write' files will remain on the corporate server. As for the importance of uptime, I think I overstated it: a few outages are OK, it's already an improvement over getting the DVDs. As for policy, my manager is kind of on my side, I will confirm that before making my move. As for getting more space through the proper channels, well, that was Plan A, and it's still on the table... But I don't have much hope. I'm not as "core businees" as I'd like.

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  • OpenSolaris won't authenticate to OpenLDAP users with md5 passwords

    - by palmer
    I have an OpenSolaris machine here; I'm using it for the first time because I want to try out ZFS. ZFS itself is working great, but I cannot get opensolaris to authenticate against our openldap directory running on Linux with md5 or sha passwords; only crypt passwords work. I'd prefer not to have to use crypt passwords; is there some magic setting I'm missing that will enable md5 passwords to authenticate?

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  • Tomcat maximum threads

    - by Clinton Bosch
    I understand that setting the maximum number of connections available in a connection pool should be the same as your maxThreads configured for your Tomcat server (which correlates to the number of requests that can be handled) For tomcat the default is 200, I assume there is a maximum that you can safely configure for your Tomcat server before things start getting out of control, which I assume is also governed by the resources of the machine it is running on. I am trying to get an understanding of the size of maxThreads that people are using with success, is 1000 too big?

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  • Windows 2008 R2 large file copy causes Hyper-V Manager to stop responding

    - by maryeileen
    I'm using the EXPORT feature in Hyper-V to move a large Virtual Machine (VM) over a 1GB network from a Windows 2008 to a Windows 2008 R2 box (200GB) and its so intense that I get the following icon on my destination Hyper-V manager: Is this expected? Is there another way to get large file across the network and minimize this intense I/O effect? Anyones else ever seen that Do Not Enter sign? The other VMs are functional but slow, but I'm guessing that is expected.

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  • Windows 7 - Virtual PC or Workstation 7.1 - Not working 4 me

    - by George
    I have a Windows 7 Ultimate - 64 bit Operating System When I'm trying to create virtual machine Windows Server 2008 64 bit I'm getting the same error neither with Virtual PC or Workstation 7.1 Error: 64 bit guest operating systems are not supported by this host and will not run and Status: 0xc000035a info: Attempting to load a 64 bit application however this CPU is not compatible with 64 bit mode. Is it any settings I'm missing or can you give me a suggestion about workaround, or what do I need to make it work.

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  • How to copy a windows 7 user profile when changing domains

    - by Kris
    I need to connect my machine to a new domain soon. When I do so a new user profile will be created and I would like to copy all the settings/data from the old profile to the new one. This is a local profile only (no roaming). Running Windows 7 Enterprise 64 bit. I found this previous question on the same topic, it however only seems to address Windows XP and the solutions do not seem to apply to Win7.

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  • Not able to access the server after changing the password?

    - by cyrilsebastian
    While accessing the server, the error comes: Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again. I am logging in from Administrator in XP machine, able to access server from other machines. Is there any problem with administrator profile??

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  • Not able to access the server after changing the password?

    - by cyrilsebastian
    While accessing the server, the error comes: Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again. I am logging in from Administrator in XP machine, able to access server from other machines. Is there any problem with administrator profile??

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  • MS SQL server services not installed - help!

    - by judahgabriel
    Hi guys, I've installed SQL Server 2008 R2, but connecting to my local machine in SQL Management Studio fails: Putting "localhost" or "." as the server name results in the same error. I've narrowed down the problem: there are no SQL services installed: Bringing up the Services control panel applet shows me there are no MS SQL services installed. Things I've tried: Repair install of SQL Complete uninstall and reinstall of all MS SQL products. How can I get SQL Server running?

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  • rsnapshot backup TO remote server

    - by Zulakis
    I just bought 100GB of "Cloud"-Space at Strato's HiDrive for remote server backups. They offer the following services: sftp,webdav,smb/cifs,rsync,scp Now i want to do a remote backup to my Backup-Space using rsnapshot. All the examples I found were only for backing up FROM remote servers to local machine, but not for backing up TO remote servers. How can I do incremental backups using rsnapshot using one of the protocols above?

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  • incorrect password when computer is locked

    - by cyntaxx
    Hi there, I have running a Windows XP SP3 Machine and I can't login after I have locked my Workstation. I changed my password and installed last Updates from Microsoft last Friday. When Windows comes up, there is no problem to login. But after I locked it, it tells me that my password is wrong. I pushed the client again into the domain, but doesn't help. Thanks, cyntaxx

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  • Using SVN on windows without a keypair

    - by Paul Nathan
    Hi, I am trying to set up command-line access for my windows machine to a svn respository on a Unix box. The guides online all have the keypair method of accessing the repository. However, I don't personally like storing my keypairs, so I'm trying to figure out how to do this. Thoughts? Suggestions?

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