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• What happens when the USB key or SD card I've installed VMware ESXi on fails?

  - by ewwhite

  An SD (SDHC) card installed in an HP ProLiant DL380p Gen8 server running VMware ESXi just failed. I encountered some rather ominous looking messages on the vCenter console and in the HP ProLiant ILO event log... Lost connectivity to the device ... backing the boot filesystem. As a result, host configuration changes will not be saved to persistent storage. Embedded Flash/SD-CARD: Error writing media 0, physical block 848880: Stack Exception. VMware advocates the use of USB and SD (SDHC) boot devices for ESXi. It was one of the main reasons the smaller footprint ESXi was developed (versus the older ESX). I've spent much time highlighting the differences between ESXi's installable and embedded modes to coworkers and clients. However, these failures do seem to happen. In this case, this is my third instance. Luckily, this is a vSphere cluster with SAN storage. What steps should be taken to remediate this failure?

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• Linux Kernel Messages: ata1.00: status: { DRDY ERR }

  - by PM

  I am receiving a lot of these messages. Is my HD going to die tomorrow morning? ata1: link is slow to respond, please be patient (ready=0) ata1: device not ready (errno=-16), forcing hardreset ata1: soft resetting link ata1: clearing spurious IRQ ata1: clearing spurious IRQ ata1: clearing spurious IRQ ata1.00: configured for UDMA/33 ata1: EH complete ata1.00: qc timeout (cmd 0xa0) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata1.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x5 (timeout)

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• Setting up Lan within a Lan

  - by nageeb

  How unreasonable would it be to setup a small LAN within an existing LAN? I'm setting up a series of video surveillance servers and a number of IP cameras in a client's location and cannot have my equipment on the same network as their local machines. My network is essentially self-contained and the only device that anyone needs to access is a web-app on one of the machines. Basically I'm thinking of installing a SOHO router which would uplink to their LAN, and then set up some NAT rules on both their router and my router, to allow outside access to the webserver. Is there anything fundamental that i'm missing which would prevent this from working?

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• Booting From VIA VT6421A Based PCI SATA Card

  - by Priyan R

  I bought a VIA VT6421A based SATA card for an 845 chipset based motherboard. The card is working i can access sata hdd from windows/linux. The problem is i can't directly boot from the sata card. My motherboard is award bios 6 based. I tried first boot as SCSI, its not worked. There is no Raid Bios screen appeared from the card. On searching i found , Add VT6421A bios to system bios as pci addon bios. I did it using cbrom6 , successfully added VT6421A bios to the existing bios. But now on booting instead of raid bios system bios showed Warning : something like cannot load add on rom for vendor id xxxx device id xxx . Whats wrong ? As the card is VT6421A based and i added VT6421A bios got from VIA website.

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• Redundancy and Automated failover using Forefront TMG 2010 Standard between Production-DR site ?

  - by Albert Widjaja

  Hi, I'm using MS TMG 2010 Standard as my single firewall to publish my Exchange Server and IIS website to the internet, however it is just one VM in the DMZ network with just one network card (vNIC), what sort of redundancy method that is suitable for making this firewall VM redundant / automatically failover in my DR site ? Because it is very important in the event of disaster recovery all important email through various mobile device will still need to operate and it is impossible if this TMG 2010 VM is offline. is it by using: 1. Multicast NLB 2. Any other clustering 3. VMware HA / FT (one VM in production, the other VM in DR site with different subnet ?) Any suggestion and idea willl be appreciated. Thanks

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• How to permanently add wireless interfaces with iw

  - by walli

  How can I permanently add virtual wireless interfaces to my network configuration with iw? I created the following interfaces: iw phy phy0 interface add vwlan0 type station iw phy phy0 interface add vwlan1 type __ap The first is configured as a wifi client connecting to an existing network (wpa_supplicant) The second is configured as wireless hotspot (hostapd + dnsmasq) The setup works, but now I can't quite figure out what the best strategy is to save this configuration permanently. Have made an init script for wpa_supplicant Have made an init script for the hotspot Virtual adaptor network settings set in /etc/network/interfaces But all this depends on the wireless interfaces being created. What would be the best way to make sure these interfaces are created before the network is set up and the services are run? As a bonus, since this wireless interface is a usb device, would it be possible to have the interfaces created (and the services started) when the interface is hotplugged? I know you can execute code after a network interface is up, but the wlan0 interface that is hotplugged should never be up. Operating system is raspbian

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• how to multi-boot/upgrade linux from LVM-based partition

  - by kenny-bobby

  i currently have FC3 linux which installed itself on the hard disk using LVM partitioning, so it is basically all one big partition. i would like to try some other distributions and upgrade to something newer, but don't want to lose my current capabilities and data files, and i know nothing or less about LVM. Is it possible (and if so an example would be nice) to install a non-LVM-based distribution on the LVM disk and have multi-boot options? Or do i have to start over new and drop the LVM? My guess is that i should save my /home (data files and .rc files) on a backup device first, then somewhere/somehow create a new partion for installing another distribution. Any LVM experts out there that have tried anything like this--well i sure could use some pointers and advice...

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• OpenVPN DNS: VPN DNS stomping local VPN

  - by Eddie Parker

  I've finally noodled with OpenVPN enough to get it working. Even better, I can mount samba drives, ping network machines through the TUN device, etc - it's all great. However, I'm noticing that if I use the following directive, then some of the machines that are normally visible by the client, on the client's side (i.e., not through the VPN) get masked with some other server out on the Internet. push "dhcp-option DNS 10.0.1.1" # Push our local DNS to clients Is there any way to avoid this, besides hacking the 'hosts' file on the client machine? Ideally I'd like to only use my VPN's DNS for machines within that domain.

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• Windows with putty via USB serial cable to Linux serial port - output ok, input isn't

  - by Aharon Robbins

  I am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5). I have /sbin/agetty -L 9600 ttyS0 in /etc/inittab. I am using a generic USB to serial adaptor on Windows (Unitek) and a null modem cable. I have putty configured for 9600 baud, 8 bits, no parity, one stop bit, no flow control. I get the login prompt from agetty in the putty window but input does not work; I see weird characters in the putty screen. I can echo output into the device from windows and see it, but cat < /dev/ttyS0 just prints out weird characters from what I type. Any and all suggestions will be welcome. Thanks!

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• MySql Replication with a star topology

  - by Riotopsys

  My company currently operates in 3 separate locations connected by slow vpn links. Each site hosts a dedicated MySql server. I need to aggregate the data from all three of them onto a single server for corporate reporting. The powers that be have stated I cannot use circular replication or federated tables. Is there a third party tool for MySql that can replicate from multiple masters? Basically the diagram would be a daisy with the reporting server slave at center with multiple replication connections coming in from the master sites on the petals.

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• Turn Windows Event Logs EVT files into Syslog to send to LogLogic

  - by TrevJen

  I have a a requirement to analyze 13gb of Windows logs by feeding it into a LogLogic Log aggregator. LogLogic is essentially Linux Syslog server, it can take a Syslog (Tcp/udp 514) feed or log on to a windows share and pull a flat file log. The only problem is that it cannot read the binary .EVT files from Windows Event logs. Normally, I would use Lasso to end the logs to a loglogic as syslog, but it has to read the logs from WMI and uses the DLLs on the log source host to format them and transmit them as syslog in the formatting that LogLogic expects. Does anyone know: A. Is there some kind of product out there to do this? or - B. Is there some way to import them into a Windows event veiwer in a way that lasso (or snare for that matter) will see them as actual real event logs on that host and forward them to the loglogic device as syslog.

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• Linux partitioning problem

  - by Claudiu

  I am using cfdisk to repartition my hdd as from OS install I only got 1 big partition a swap. I wanted to resize the big partition to 1 GB /boot and use the rest of the space for an extended partition. After I do cfdisk, I recheck the partitions with fdisk -l and I get these: Disk /dev/sda: 320 GB, 320070320640 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda3 1 38455 308881755 f Extended LBA Warning: Partition 3 does not end on cylinder boundary. /dev/sda2 38455 38698 1951897 82 Linux swap /dev/sda1 * 38699 38913 311349654 83 Linux My problem is the Warning message, I think I know the cause, I think its because of sda1 Blocks size. How could that be soo big if Start and End interval is small?

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• Blackberry message text is all white on white cannot read - Outlook 2007

  - by johnny

  Hi, I have a user that has Outlook 2007. When a certain person sends her an email from their blackberry the text is all white. If you copy all the text and place it in Word and change the font color you can see the email. The recipient is the only person that has the trouble with email from the blackberry device from this certain person. Everyone else can see the bb messages fine. Any ideas on what to check? I made sure the theme was set to none and that all fonts selected were installed (changed it to arial.) All other emails sent to the recipient are fine from everyone. The user that sends from the blackberry also has a PC. When he sends emails from the machine it looks fine for the troubled recipient. It is only when sending from the bb to that certain person that we get the white on white "invisible" text. Thank you for any help.

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• Emails getting stuck in "messages with an unreachable destination queue" in Exchange

  - by Jason T.

  There's an exchange server with a problem that I'm trying to solve. There's a couple hundred messages that have been sent out but need journaled. They have been sent out but can't seem to make it to their journaling server. I have verified that the server they need to get to is valid and that the data center hosting the server is not having any problems. What are some other things I should look for to solve this issue? If any more information is needed please feel free to ask.

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• CPU Usage at 100% with "Hardware Interrupts"

  - by eventualEntropy

  After turning on my desktop one day, I found that my CPU usage was maxed out at 100%, with 99% of that going to hardware "Interrupts". I tried to enable/disable all my devices one by one through the device manager, and found that I could get the CPU usage used by the Interrupts down to 50% by disabling all devices labelled "USB Host Controller" (except the ones for the mouse/keyboard). I found that I also got 10-20% more from disabling "High Definition Audio Controller". Following the tutorial at: http://www.msfn.org/board/topic/140263-how-to-get-the-cause-of-high-cpu-usage-by-dpc-interrupt/ Led me to similar conclusions (that is, that the culprit is mostly "USB Host Controller"): I've tried updating my asus motherboard driver and my video card driver. This is on Windows 7 64 bit. I've spent hours trying to figure this out and I'm running out of ideas short of formatting (which might still not fix it!).

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• Remote Desktop, Host: 2008, Client: Windows 7, The remote computer requires Network Level Authentica

  - by deerchao

  Hi, today I accidently changed one option of Teminal Services, I checked "Allow connections only from computers running Remote Desktop with Network Level Authentication". After that, I can't connect to my server any more. The error says: The remote computer requires Network Level Authentication, which your computer does not support. But my client pcs(both home and at office) are running Windows 7, as far as I know, it shoud support NLA; And in About dialog of Remote Desktop Connection there says "Supports Network Level Authentication". My server is running Windows Server 2008, placed in IDC center; I could connect to it before I change the settings. All other sevices(like IIS, SQL Server) are running normally. For clients, I tried two PCs running Windows 7, and two virtual windows XP machine running in Virtual PC and Virtual Box, all of them gives the same error message. Is there a way I can make things right without go to IDC which is far away? Thanks.

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• Check packet vlan tag using Tap virtual interface

  - by ankit

  Hi all, I am trying to learn how to implement virtual interfaces using the Tap driver. So far my understanding is that using the tap driver I can create a virtual interface and then have a userspace program attach to this interface to analyse the data coming into this device. Now what if I attach a cisco switch to my LAN interface using a TRUNK link, forward all the packets coming into the LAN interface to the virtual tap interface and then in my program attached to this interface do some coding to analyze the vlan tag in the packet and only allow certain vlans to be forwarded to the WAN interface ? Does this sound plausible or is there is flaw in my basic understanding ? Thanks for the help! ankit

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• Windows 7 installation reboot loop

  - by Auswoolf

  Upgrading from Vista home premium to win 7 hoe premium from DVD ex Digital river on gigabyte VM900m; core 2 duo 2.13GHz 2GB ram; Western digital 250GB HD. Got as far as "Expanding Windows files ...100% the error message "Computer encountered unexpected error... To install windows press OK to restart computer and reinstall windows" The computer then reboots, loads Windows 7 (new logo) a essage that says "setup is starting services" then the error message comes back. I can get into BIOS to change boot priority but the computer just ignores this and goes through the same sequence. At the point of "to boot from CD/DVD press any key" my keyboard is deactivated and i cannot make a choice and the sae sequence occurs. I cannot break the sequence - I have push every key, disconnected every external device including HDMI screen, but nothing stops the loop. Any ideas? Auswoolf

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• How to block some disks from probes on Linux boot?

  - by Igor Velkov

  My linux host connected to SAN with FC interface. It connect with one path, and see some luns, that can't access, because they need anohter path, not available to host. On boot linux probe all lun he can see, get read error on unaccessible luns, and hangs there for a long-long time. Is there a way to disable any access to some luns at boot time, and later? I found a filters for device ignoration for LVM and MULTIPATH, but it not help during boot process. Generally, lvm still affected too despite of filter, and gives me a IO error on every operation like lvdisplay and vgdisplay, but this is another question.

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• Unix list absolute file name

  - by Matthew Adams

  Given an arbitrary single argument representing a file (or directory, device, etc), how do I get the absolute path of the argument? I've seen many answers to this question involving find/ls/stat/readlink and $PWD, but none that suits my need. It looks like the closest answer is ksh's "whence" command, but I need it to work in sh/bash. Assume a file, foo.txt, is located in my home directory, /Users/matthew/foo.txt. I need the following behavior, despite what my current working directory is (I'm calling the command "abs"): (PWD is ~) $ abs foo.txt /Users/matthew/foo.txt $ abs ~/foo.txt /Users/matthew/foo.txt $ abs ./foo.txt /Users/matthew/foo.txt $ abs /Users/matthew/foo.txt /Users/matthew/foo.txt What would "abs" really be? TIA, Matthew

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• How do I mount a HFS+ dd image in OSX?

  - by Paul McMillan

  I had an HFS+ formatted drive that was going bad and wouldn't mount at all on OSX. I created an image using ddrescue on linux, and was able to save most of it. I can mount the drive and see the data just fine in linux using this: mount -o loop -t hfsplus dd_image mountpoint This doesn't work on my OSX system since hfsplus isn't a valid filesystem type. If I try: mount -t hfs image mountpoint It complains that it needs a block device. What's the fix here?

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• Setup Cisco RVS4000 QOS for VOIP

  - by andyknas

  Just switched from dedicated T1's with analog phone lines to cable modem with 10/2 uplink. We're having some VOIP call quality issues on the outgoing side when bandwidth is stressed and I need to setup QOS or a VLAN on our RVS4000 router. Currently all phone traffic (talkswitch device and ip phones) are on it's own d-link PoE switch, and all workstations are on a LinkSys 1GB switch. Both switches are plugged into ports on the RVS4000. I'd like to set it up so that the dlink port has ~512Mbsp dedicated to it for voice at all times. It's my understanding that with a VLAN or QOS I can set this up. I've got QOS setup already with port 5060 to have high priority but it doesn't seem to make a difference.

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• Using the Juniper EX3300 Switch as a router?

  - by Richard Whitman

  I have a Juniper EX3300 switch in a data center. And I have connected one of the uplink ports (ge-0/1/0) to my ISP's router. I want to configure it so that all the devices connected to ports in the same VLAN as ge-0/1/0 can access the Internet. I have done some research, and I haven't gotten anywhere really. I have configured the interface as follows: ge-0/1/0 { ether-options { no-auto-negotiation; link-mode full-duplex; speed { 1g; } } unit 0 { family inet { address xx.xx.xx.xx/32; } } } where xx.xx.xx.xx is the "Customer Router Port IP" assigned by my ISP. When I try to commit, I get the following error: Interface ge-0/1/0.0 not enabled for switching Can some one tell me what is the right way to configure it?

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• NetApp and SQL Server?

  - by Edinor

  Do you have any good or bad experiences to share running SQL Server OLTP Systems on NetApp appliances? I have been working with a small, relatively low-volume cluster with a lower-end NetApp device, and I have found the environment to be generally unstable, at least compared to my experiences with other SANs, iSCSI arrays, and DAS setups. I struggle to believe that RAID DP and WAFL are more than fairy-dust technologies. A solution has been proposed to me that I just need a bigger, better NetApp, with PAM cards and other cool technology I've not heard of, and I feel like I would be better off spending a quarter of that on good direct-attached drives and a beefy server. At the same time, I feel that an Enterprise-class SAN should be something I can count on to be consistently a more stable, better performer than the less expensive solution I might propose. Are you a SQL Server DBA in an OLTP environment and love your NetApp? If you don't like them, why not?

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• windows 7 no internet access

  - by Kyle

  Just did a fresh install of Windows 7, and the network and sharing center says no internet access. Disabling and enabling the adapter seems to fix the issue temporarily, but the internet stops working shortly after. I have installed the latest NIC drivers and have installed all Windows updates. I have also tried manually setting the ip/gateway/dns and running netsh int ip reset in an elevated command prompt. I am running Windows 7 Home Premium 64bit with a wired connection. I have searched for hours, but have found no working solutions. Does anyone have any ideas?

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