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GlusterFS is failing to mount on boot

- by J. Pablo Fernández

I'm running the official GlusterFS 3.5 packages on Ubuntu 12.04 and everything seems to be working fine, except mounting the GlusterFS volumes at boot time. This is what I see in the log files: [2014-06-13 08:52:28.139382] I [glusterfsd.c:1959:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.5.0 (/usr/sbin/glusterfs --volfile-server=koraga --volfile-id=/private_uploads /var/www/shared/private/uploads) [2014-06-13 08:52:28.147186] I [socket.c:3561:socket_init] 0-glusterfs: SSL support is NOT enabled [2014-06-13 08:52:28.147237] I [socket.c:3576:socket_init] 0-glusterfs: using system polling thread [2014-06-13 08:52:28.148183] E [socket.c:2161:socket_connect_finish] 0-glusterfs: connection to 176.58.113.205:24007 failed (Connection refused) [2014-06-13 08:52:28.148236] E [glusterfsd-mgmt.c:1601:mgmt_rpc_notify] 0-glusterfsd-mgmt: failed to connect with remote-host: koraga (No data available) [2014-06-13 08:52:28.148251] I [glusterfsd-mgmt.c:1607:mgmt_rpc_notify] 0-glusterfsd-mgmt: Exhausted all volfile servers [2014-06-13 08:52:28.148477] W [glusterfsd.c:1095:cleanup_and_exit] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_transport_notify+0x27) [0x7fe077f8e0f7] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_notify+0x1a4) [0x7fe077f91cc4] (-->/usr/sbin/glusterfs(+0xcada) [0x7fe078655ada]))) 0-: received signum (1), shutting down [2014-06-13 08:52:28.148513] I [fuse-bridge.c:5444:fini] 0-fuse: Unmounting '/var/www/shared/private/uploads'. My fstab contains: proc /proc proc defaults 0 0 /dev/xvda / ext4 noatime,errors=remount-ro 0 1 /dev/xvdb none swap sw 0 0 /dev/xvdc /var/lib/glusterfs/brick01 ext4 defaults 1 2 koraga:/private_uploads /var/www/shared/private/uploads glusterfs defaults,_netdev 0 0 Any ideas what's going on and/or how to fix it?

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Chipset fan on the frtiz - compressed air hasn't fixed anything - is there anything I can do?

- by Anthony

Yesterday, my computer started to make an annoying whining noise. Knowing that this is likely a fan issue, I opened the case and proceeded to determine which fan was causing the issue. I got some compressed air and tried cleaning out the dust around it (and the rest of the computer while I was at it). This hasn't seemed to fix the issue. Now, if it were just any fan, I would probably just replace the fan - they're relatively cheap after all. However, this is a special fan. Aside: For what its worth, I feel bad that the graphics card blocks part of the fan, but it is the only slot the graphics card fits, so I had no choice. After pulling out my motherboard user guide, it looks like this is a fan placed directly on top of the chipset. To be perfectly honest, I have no clue what the purpose of the chipset is - but it sounds important. After some quick research, I see that it is responsible for providing the bridge between my CPU, RAM and graphics, among other things. Just a quick search at Newegg tells me that chipset fans can be purchased at pretty reasonable prices (< 20 dollars). Is it practical to replace this fan? It is an old computer as computers go and I wouldn't be terribly upset to upgrade the motherboard and processor, so perhaps this is a sign. Hardware Specs: Motherboard: Asus A8N-E Chipset: NVIDIA nForce4 Ultra

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Can OpenVPN invoke DHCP Client?

- by Ency

I have got working VPN connection through openvpn, but I would like to use also my DHCP server and not openvpn's push feature. Currently everything works fine, but I have to manually start dhcp client, eg. dhclient tap0 and I get IP and other important stuff from my DHCP, is there any directive which start DHCP Client when connection is established? There is my client's config: remote there.is.server.com float dev tap tls-client #pull port 1194 proto tcp-client persist-tun dev tap0 #ifconfig 192.168.69.201 255.255.255.0 #route-up "dhclient tap0" #dhcp-renew ifconfig 0.0.0.0 255.255.255.0 ifconfig-noexec ifconfig-nowarn ca /etc/openvpn/ca.crt cert /etc/openvpn/encyNtb_openvpn_client.crt key /etc/openvpn/encyNtb_openvpn_client.key dh /etc/openvpn/dh-openvpn.dh ping 10 ping-restart 120 comp-lzo verb 5 log-append /var/log/openvpn.log Here comes server's config: mode server tls-server dev tap0 local servers.ip.here port 1194 proto tcp-server server-bridge # Allow comunication between clients client-to-client # Allowing duplicate users per one certificate duplicate-cn # CA Certificate, VPN Server Certificate, key, DH and Revocation list ca /etc/ssl/CA/certs/ca.crt cert /etc/ssl/CA/certs/openvpn_server.crt key /etc/ssl/CA/private/openvpn_server.key dh /etc/ssl/CA/dh/dh-openvpn.dh crl-verify /etc/ssl/CA/crl.pem # When no response is recieved within 120seconds, client is disconected keepalive 10 60 persist-tun persist-key user openvpn group openvpn # Log and Connected clients file log-append /var/log/openvpn verb 3 status /var/run/openvpn/vpn.status 10 # Compression comp-lzo #Push data to client push "route-gateway 192.168.69.1" push "redirect-gateway def1"

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Set up WLAN in 3-level house

- by Balint Erdi

I'm having a hard time setting up the network in our house. It has three levels (basement, ground floor, first level). The WLAN is set up by an ASUS RT-N12 router which provides perfect coverage for the ground floor and the basement. However, I set up my "home office" in the basement where the signal barely arrived. So I purchased a TP-Link TL-WA901ND (300 Mbps) Access Point which I set up in the other corner of the ground floor to expand the ASUS router's range. I used the AP's Repeater mode for that. The distance between my computer and the TP-Link AP is 6-7 meters. There is a staircase going down from the ground floor to the basement so there are no solid walls between the computer and the AP. This setup mostly works (I am writing this from the basement) but it is not reliable (the signal strength sometimes goes down to ~40% of the max) sometimes so I wonder if I am doing it correctly or if there is a better way. Screenshot of the router's and the AP's dashboard screen follow: Any comments on what I am doing wrong or hints for improvement are appreciated. Thank you. UPDATE Tried one more thing, setting up the TP-LINK AP in Access Point mode. That way, I can make it use a different SSID. I enabled WDS/Bridge so that it expands the range of the ASUS router (see screenshot). That does not work, either, if I connect to the network set up by the TP-LINK device (PELSTER-2), I can't reach the external network (the Internet). It seems the problem always comes back to this, the TP-LINK does not have access to the external network, whatever its mode of operation.

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OpenVPN: ifup tap0 drops all connections

- by raspi

I'm trying to create star shaped "virtual" LAN with OpenVPN which is not connected to physical network. ie. tap0 packets should not go to eth0. Packet should only go through OpenVPN to connected clients. This setup works with my OpenVPN testing machine which runs Virtual Box but not on my actual server which is running on top of Xen. Both servers are running Ubuntu Intrepid. /etc/network/interfaces: iface tap0 inet manual address 10.10.10.1 netmask 255.255.255.0 gateway 10.10.10.1 /etc/openvpn/server.conf mode server tls-server port 1194 proto udp dev tap client-to-client ca /etc/openvpn/easy-rsa/keys/ca.crt cert /etc/openvpn/easy-rsa/keys/servername.crt key /etc/openvpn/easy-rsa/keys/servername.key dh /etc/openvpn/easy-rsa/keys/dh384.pem ifconfig-pool-persist ipp.txt server-bridge 10.10.10.1 255.255.255.0 10.10.10.128 10.10.10.250 push .route 10.10.10.1 255.255.255.0 keepalive 5 60 comp-lzo persist-key persist-tun status /var/log/openvpn-status.log log-append /var/log/openvpn.log verb 3 user nobody group nogroup ifup tap0 on Virtual Box: everything ok, SSH keeps running. But on Xen SSH connection drops and I have to reboot whole machine. What I'm missing?

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Windows Bluescreen - atikmpag.sys

- by Mochan

Information Name: atikmpag.sys bluescreen (BSOD or BlueScreen of Death) Error code: 0x00000116 Appears when: Playing games, watching videos Can be reproduced: Yes Cause: Graphics Card is the main assumption System Specifications Before we begin - I will inform you of my specifications. OS: Windows 7 x64 Home Edition Model: Dell Inspiron 15R Special Edition (aka Inspiron 7520) (Add 2GB of RAM to the model linked) Hard Drive: 1TB CPU: Intel Quad-Core i7 Sandy Bridge (I think) Processor at 2.10GHz (I think it can be clocked to 3GHz?) RAM: 6GB (I think 1 x 4GB and 1 x 2GB) Display: 15.6" HD (1366x768) Graphics: AMD Radeon HD 7500M 2GB Details So now that you know some basics about my computer, I'll get to the problem. Being an Ubuntu user I hardly use Windows, but occasionally I do. Like to run Skyrim and other games incompatible with Linux and WINE. The new Sims 3 Seasons patch is also now not supported. When playing these two games and other ones, theoretically. I have also heard others saying that while watching HD movies and video series it also happens. While watching the bluescreen as it happens, I see it is the 'atikmpag.sys' error. I have not installed much and nothing significant. I think I have downloaded Skyrim, Firefox and The Sims 3. I haven't done much more... since Ubuntu is definitely the best in comparison! (No hate, just a joke :P). I can reproduce it easily (just by running a game for less than a minute). It is always there each time, but it's never at a specific time or anything. So far I have found that it may be caused by lack of power to the graphics card, or it may be damaged or fried. Since I've had the computer for a mere 4 months (and have had other problems with it also). I have contacted Dell but they are useless beyond belief. Anyone with any information, solutions or details are encouraged to share your knowledge, as it would be immensely appreciated.

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VNC failure on Xen

- by BCable

The following config works and creates a good VM in Xen: # Kernel Setup kernel = "/boot/vmlinuz-2.6.18.8-xenU" # Memory memory = "256" # Disk disk = [ "file:/opt/xen/domains/110/sda1.img,sda1,w", "file:/opt/xen/domains/110/swap.img,sda2,w" ] # container name name = "110" hostname = "boo" # Networking vif = ["type=ieomu, bridge=xenbr0"] # VNC vnc = 1 #vfb = [ 'type=vnc,vncdisplay=2,vnclisten=0.0.0.0,vncpasswd=110' ] # Behavior Settings root = "/dev/sda1" extra = "fastboot" But when I uncomment the VFB line, I get the following error after it hangs for at least 30 seconds: [root@customer 110]# xm create boo.cfg Using config file "./boo.cfg". Error: Device 0 (vkbd) could not be connected. Hotplug scripts not working. Any ideas? Part two of this question: Sometimes it actually works, and a port is opened. When this happens, nmap shows the VNC ports open and I can connect via the VNC client, but it just hangs at "Connection established." and no VNC display shows up. I've tried multiple VNC clients (TightVNC, TightVNC Java Console, RealVNC), but they all fail to connect. Does VNC through Xen require X to be started in order to function? I was under the impression that it would show the console screen, so I'm confused as to why all these issues are occurring. Thanks!

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Networking - intermittent, slow speeds

- by jack

Hi all I'm a novice when it comes to networking. I live in a large two storey building that used to be a school and we have an internet connection with BT (british telecoms provider), the connection speed is 12Mb.. Basically our connection is slow and very intermittent and I was wondering if anybody here could provide some help or ideas. There are about 11 people in the building who could be online at any time. We have a router on the ground floor which is bog standard supplied by BT. To provide Broadband access to the 1st and 2nd floors, we used an old switch that the school left, we have a cable running from the router on the first floor to the switch which connects to a wireless router which is configured as a bridge on the 2nd floor supplying broadband access to the 1st and 2nd floors. Additionally we have 3 computers that are connected via the switch through the ethernet sockets left by the school on the ground floor. The router we use on the 2nd floor came in a pack of 2 and cost about £15 (bought by another person). Sometimes the connection is perfectly fine, i.e. early hours of the morning or when everybody is out, we have rang BT who say that the connection cannot cope with the numbers of people online, plus I'm not sure whether each person is streaming etc. Can anybody offer any advice?

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Virtual machines interconnection inside Proxmox 2.1 Cluster

- by Anton

We have 3 physical servers (each with 1 NIC) in different datacentres, all of them are interconnected by openvpn bridged private network (10.x.x.x). Inside this network we have fully functional 3 nodes Proxmox 2.1 cluster. So, actually question is: Is there any "proper" way to make "global" local network (172.16.x.x) for all VMs inside cluster, so even if we move VM from one node to other we could reach it by static IP regardless of it's physical location? BTW, we can't add dedicated NIC to each server. Thanks in advance. EDIT: I have tried to make a separate openvpn bridge for 172.16.x.x, now I have at each server two interfaces: SRV1: openvpnbr1 - 172.16.13.1 vmbr0 - 172.16.1.1 SRV2: openvpnbr1 - 172.16.13.2 vmbr0 - 172.16.2.1 But now there is no connection between those ifaces: SRV1: ping 172.16.13.2 From 172.16.1.1 icmp_seq=2 Destination Host Unreachable SRV2: ping 172.16.13.1 From 172.16.2.1 icmp_seq=2 Destination Host Unreachable If I shut down vmbr0 interfaces, so there is connection between servers over openvpn, but vmbr0 is used by Proxmox... Where I am wrong?

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VNC on Xen failure

- by BCable

The following config works and creates a good VM in Xen: # Kernel Setup kernel = "/boot/vmlinuz-2.6.18.8-xenU" # Memory memory = "256" # Disk disk = [ "file:/opt/xen/domains/110/sda1.img,sda1,w", "file:/opt/xen/domains/110/swap.img,sda2,w" ] # container name name = "110" hostname = "boo" # Networking vif = ["type=ieomu, bridge=xenbr0"] # VNC vnc = 1 #vfb = [ 'type=vnc,vncdisplay=2,vnclisten=0.0.0.0,vncpasswd=110' ] # Behavior Settings root = "/dev/sda1" extra = "fastboot" But when I uncomment the VFB line, I get the following error after it hangs for at least 30 seconds: [root@customer 110]# xm create boo.cfg Using config file "./boo.cfg". Error: Device 0 (vkbd) could not be connected. Hotplug scripts not working. Any ideas? Part two of this question: Sometimes it actually works, and a port is opened. When this happens, nmap shows the VNC ports open and I can connect via the VNC client, but it just hangs at "Connection established." and no VNC display shows up. I've tried multiple VNC clients (TightVNC, TightVNC Java Console, RealVNC), but they all fail to connect. Does VNC through Xen require X to be started in order to function? I was under the impression that it would show the console screen, so I'm confused as to why all these issues are occurring. Thanks!

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Windows XP corrupts registry every several hours

- by Ilya Kazakevich

There is a Dell XPS 400 with Windows Media Center installer. It is installed on RAID (Intel Matrix Storage) which is built-in chipset south bridge. Raid has two 150 Gb WDC drivers connected as mirror. All drivers and updates are installed( sp3 and so on). A week ago PC changed its video mode to 256 colors (like VESA mode) and after several moments I got BSOD: c000021a: 0xc0000005 Doctor watson did not create dump although it is installed as default debugger. After reboot it said that config file is missing or corrupted. So, I boot to recovery console and found that registry file (config) is so small. I've replaced it with one from recovery point and windows booted sucessfully. But after about 3 hrs -- it has crashed again in the same wat! I look in event viewer: is said that Explorer.exe failed to open \global??\DLIAFS. I look in winobj, and found that it is a device. I made "deny from everyone" for this device ACL, and after several hours my windows crashed. I restored registry, boot again and there was no error about DLIAFS. I did full chkdsk and it did not found anything bad. But I found event about error paging to \Harddrive1\D. I do not have pagefile there, but I thought I should check my disk again. Unfortunatelly I cannt use smart tools for RAID, but I downloaded latest software from Intel (it can do the same things like RAID bios can but from windows). It verified my disks, found some errors, fix them, than I rebooted. And it crashed again. I am lost. What (except kernel debugging) could be done here? Thanks

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Windows XP corrupts registry every several hours

- by Ilya Kazakevich

There is a Dell XPS 400 with Windows Media Center installer. It is installed on RAID (Intel Matrix Storage) which is built-in chipset south bridge. Raid has two 150 Gb WDC drivers connected as mirror. All drivers and updates are installed( sp3 and so on). A week ago PC changed its video mode to 256 colors (like VESA mode) and after several moments I got BSOD: c000021a: 0xc0000005 Doctor watson did not create dump although it is installed as default debugger. After reboot it said that config file is missing or corrupted. So, I boot to recovery console and found that registry file (config) is so small. I've replaced it with one from recovery point and windows booted sucessfully. But after about 3 hrs -- it has crashed again in the same wat! I look in event viewer: is said that Explorer.exe failed to open \global??\DLIAFS. I look in winobj, and found that it is a device. I made "deny from everyone" for this device ACL, and after several hours my windows crashed. I restored registry, boot again and there was no error about DLIAFS. I did full chkdsk and it did not found anything bad. But I found event about error paging to \Harddrive1\D. I do not have pagefile there, but I thought I should check my disk again. Unfortunatelly I cannt use smart tools for RAID, but I downloaded latest software from Intel (it can do the same things like RAID bios can but from windows). It verified my disks, found some errors, fix them, than I rebooted. And it crashed again. I am lost. What (except kernel debugging) could be done here? Thanks

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Using radvd to advertise ipv6 over VPN connection using DD-wrt

- by Sean Madden

My ultimate goal is to allow VPN users to have access to my internal IPv6 network from across the intertubes. I've got a linksys WRT54GSv2 running DD-WRTv24SP1 and have configured the little guy as specified here http://www.dd-wrt.com/wiki/index.php/IPv6 and it works wonderfully over the br0 interface (LAN/WLAN bridge). Here's the issue though, when I add an additional interface to the radvd config file on the router (specifically ppp0, for the VPN traffic), radvd refuses to start. The kicker is that on DDWRT, it doesn't give an error message, it just fails outright. Any suggestions on where to proceed from here? /jffs/radvd.conf: interface br0 { AdvSendAdvert on; prefix 0:0:0:1::/64 { AdvOnLink on; AdvAutonomous on; }; }; interface ppp0 { AdvSendAdvert on; prefix 0:0:0:1::/64 { AdvOnLink on; AdvAutonomous on; }; }; The documentation I've found for radvd is slim, but if anyone has a decent idea on how to proceed I'd love to hear it.

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Sharing files between 2 different routers

- by Chris

I realize this has been asked before and I have read as much as I could find on the topic but I still need help with this because there are so many different approaches and the ones I am trying aren't working. So I have 2 routers, lets call them A and B. Both have a wireless feature and are active. A is in the basement and receives the internet. There is a TV on the ground floor that is connected to A through an ethernet wire. B is upstairs and gets the internet from A through an ethernet wire. Connected to B, is a desktop running Plex Media Server. What I want to do is make sure devices connected to both routes can access the Plex Media Server. So what I have read is that I should plug in the ethernet wire connecting B to a into a LAN port instead of the WAN port. After that I should turn off DHCP. I have tried this and B stops receiving internet. What am I doing wrong? Another thing I have read is to use Router B in bridge mode but Router B is running openwrt and I have QoS on it so gaming/VoIP/browsing is unaffected by heavy downloading/uploading. I would prefer to keep this active. I realize it might be ineffective if a device in Router A is doing some hardcore downloading but all that stuff is done on Router B anyway so it doesn't matter. Router A can't get openwrt because it is a shitty one provided by Bell. So, how do I proceed with this?

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Is it possible to provide a wired ethernet connection to external devices with an extra LAN card?

- by Ben McCormack

I'm trying to provide a wired ethernet connection (wireless is not an option for this device) to a device (Samsung blu-ray player) without running Cat5 cable all over the home. I have a PC sitting next to this device and the PC is connected to the network via a wireless USB adapter. Is it possible to provide a wired connection from the PC to the wired device using the (currently unused) ethernet port in the back of the computer? Here's how I envision the device getting connected to the internet via my network: Linksys WRT54G v8 Wireless Router | ``--> Windows 7 PC connected via wireless | ``--> Blu-ray player connected via wired connection to the ethernet port on the PC. If so, how is this done? Will I need a crossover cable? What settings will I need to change in Windows 7 so that the device can connect? NOTE: I'm trying to avoid having to buy a wireless bridge and/or hacking a router with an open-source firmware to get this to work. See my previous question for more details.

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Cisco Catalyst 3550 + Alteon 184 Load-Balancing Issues...

- by upkels

I have just deployed a couple Cisco Catalyst 3550 switches, and a couple Alteon 184 Web Switches for load-balancing. I can ping all RIPs and VIPs to/from the Alteon. Topology Before: (server) <- (Alteon) <- (Internet) Topology Now: (server) <- (3550) <- Alteon <- (Internet) Cisco Port Configuration (Alteon Uplink Port): description LB_1_PORT_9_PRIMARY switchport access vlan 10 switchport mode access switchport nonegotiate speed 100 duplex full Alteon Port 9 Configuration (VLAN 10 WAN): >> Main# /c/port 9/cur Current Port 9 configuration: enabled pref fast, backup gig, PVID 10, BW Contract 1024 name UPLINK >> Main# /c/port 9/fast/cur Current Port 9 Fast link configuration: speed 100, mode full duplex, fctl none, auto off Cisco Configuration (Load-Balanced Servers Port): description LB_1_PORT_1_PRIMARY switchport access vlan 30 switchport mode access switchport nonegotiate speed 100 duplex full Alteon Port 1 Configuration (VLAN 30 LOAD-BALANCED LAN): >> Main# /c/port 1/cur Current Port 1 configuration: enabled pref fast, backup gig, PVID 30, BW Contract 1024 name LB_PORT_1 >> Main# /c/port 1/fast/cur Current Port 1 Fast link configuration: speed 100, mode full duplex, fctl both, auto on Each of my servers are on vlan 10 and 30, properly communicating. I have tried to turn on VLAN tagging on the Alteon, however it seems to cause all communications to stop working. When I tcpdump -i vlan30 on any of the webservers, I see normal ARP communications, and some STP communications, which may or may not be part of the problem: ... 15:00:51.035882 STP 802.1d, Config, Flags [none], bridge-id 801e.00:11:5c:62:fe:80.8041, length 42 15:00:51.493154 IP 10.1.1.254.33923 > 10.1.1.1.http: Flags [S], seq 707324510, win 8760, options [mss 1460], length 0 15:00:51.493336 IP 10.1.1.1.http > 10.1.1.254.33923: Flags [S.], seq 3981707623, ack 707324511, win 65535, options [mss 1460], len gth 0 15:00:51.493778 ARP, Request who-has 10.1.3.1 tell 10.1.3.254, length 46 etc... I'm not sure if I've provided enough information, so please let me know if any more is necessary. Thank you!

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USB 3.0 hard disk not detected on a particular host controller?

- by Alvin Wong

I have a USB 3.0 hard disk which has always been working on my desktop with an XHCI. Now I just bought a notebook with an XHCI (something with Intel's Ivy Bridge setup). The first time I plug the hard disk in its 3.0 port it is detected and working. A few hours later I try to connect it again, but seems that the notebook just ignored it! The light on the hard disk didn't blink as usual (instead it is hold at on). I then tested it with my desktop again and it is working perfectly. It gets trickier when I plug it in the USB 2.0 port of that notebook it is detected and working perfectly (despite the slower speed). Then I try to plug in an USB 2.0 USB flash drive to that USB 3.0 port, and it is detected (of course as USB 2.0). So, there are two USB 3.0 ports on my notebook's XHCI. Both of them are not working with my hard disk but working perfectly fine with my USB 2.0 UFD. What's wrong with it? When I plug in the hard disk, device manager doesn't change. I've tried re-installing the driver for the XHCI, but it changes nothing. Had I broke the USB 3.0-specific pins of both USB 3.0 ports?

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Tcpreplaying using VMware

- by Methos

This is more like a testbed setup question. I want to use VMware to debug some networking code in the linux kernel in the VM. My VM has two network interfaces. What I want to do is replay the capture file in the host and receive the packets in the VM. My problem is I do not see replayed packets in the VM. I am running VMware and tcpreplay on the host as sudo. Hence I think there should not be any problem access devices files. I am running VMware workstation 7.0 a. I first began with Custom networking as that provides option of creating your own virtual network name. I wrote /dev/vmnet3 and /dev/vmnet4 for the two interfaces respectively. However, after booting the guest, I did not see any of these interfaces or devices files (in /dev) created on the host. b. Then I tried 'Host Only', but that does not show what bridge/device file is associated with the interface. c. Finally I tried bridged networking mode. I see vmnet1, vmnet8 and vboxnet0 on the host. I have tcpreplayed the capture file on each of these interfaces, for all the above three cases. I tried to capture packets in the VM using "tcpdump -i any". However, I do not see any packets. Any ideas/pointers?

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Quad channel memory and compatibility

- by balteo

My motherboard has quad channel memory compatibility. There are 8 memory slots in all: 4 slots are black the other 4 slots are white. I currently have 4 memory modules of 1 GB each in the 4 white slots. That leaves me with 4 free memory slots. My question is: can I put 4 memory modules of 2 GB each in the 4 remaining slots or do I have to use modules of 1 GB all over? FYI here is the output of lshw: alpha description: Ordinateur Tour produit: Precision WorkStation 690 *-cpu:0 description: CPU produit: Intel(R) Xeon(R) CPU X5355 @ 2.66GHz *-memory description: Mémoire Système identifiant matériel: 1000 emplacement: Carte mère taille: 4GiB *-bank:0 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) produit: HYMP512F72CP8N3-Y5 fabriquant: Hynix Semiconductor (Hyundai Electronics) identifiant matériel: 0 numéro de série: 56737501 emplacement: DIMM 1 taille: 1GiB bits: 64 bits horloge: 667MHz (1.5ns) *-bank:1 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) produit: HYMP512F72CP8N3-Y5 fabriquant: Hynix Semiconductor (Hyundai Electronics) identifiant matériel: 1 numéro de série: 48115124 emplacement: DIMM 2 taille: 1GiB bits: 64 bits horloge: 667MHz (1.5ns) *-bank:2 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) produit: HYMP512F72CP8N3-Y5 fabriquant: Hynix Semiconductor (Hyundai Electronics) identifiant matériel: 2 numéro de série: 48115523 emplacement: DIMM 3 taille: 1GiB bits: 64 bits horloge: 667MHz (1.5ns) *-bank:3 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) produit: HYMP512F72CP8N3-Y5 fabriquant: Hynix Semiconductor (Hyundai Electronics) identifiant matériel: 3 numéro de série: 48115424 emplacement: DIMM 4 taille: 1GiB bits: 64 bits horloge: 667MHz (1.5ns) *-bank:4 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide] fabriquant: FFFFFFFFFFFF identifiant matériel: 4 numéro de série: FFFFFFFF emplacement: DIMM 5 bits: 64 bits horloge: 667MHz (1.5ns) *-bank:5 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide] fabriquant: FFFFFFFFFFFF identifiant matériel: 5 numéro de série: FFFFFFFF emplacement: DIMM 6 bits: 64 bits horloge: 667MHz (1.5ns) *-bank:6 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide] fabriquant: FFFFFFFFFFFF identifiant matériel: 6 numéro de série: FFFFFFFF emplacement: DIMM 7 bits: 64 bits horloge: 667MHz (1.5ns) *-bank:7 description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide] fabriquant: FFFFFFFFFFFF identifiant matériel: 7 numéro de série: FFFFFFFF emplacement: DIMM 8 bits: 64 bits horloge: 667MHz (1.5ns) *-pci:0 description: Host bridge produit: 5000X Chipset Memory Controller Hub fabriquant: Intel Corporation identifiant matériel: 100 information bus: pci@0000:00:00.0 version: 12 bits: 32 bits horloge: 33MHz

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Kickstart CentOS 6 prompting for TCP/IP with network set to DHCP

- by Andy Shinn

I am trying to stop my kickstart CentOS install prompting me for TCP/IP information. After I click through this prompt (keeping IPv4 and IPv6 to their defaults) the installation continues and completes just fine. Below is my kickstart file: # Andy's super awesome VM kickstart file install url --url=http://mirrors.kernel.org/centos/6/os/x86_64 lang en_US.UTF-8 keyboard us text %include /tmp/network.ks rootpw --iscrypted $6$RA8DyrNTsVJkGIgY$ohZ62HHiOjNnn1yDMZlIu3lQ63D3plGPcbVZtPKE8Oq6Z.IGUgN.kNLkxs/ZymZuluRDWsW2eey5zLOl2G3mp. firewall --service=ssh authconfig --enableshadow --passalgo=sha512 selinux --disabled timezone America/Los_Angeles bootloader --location=mbr --driveorder=vda --append="crashkernel=auto rhgb quiet" # The following is the partition information you requested # Note that any partitions you deleted are not expressed # here so unless you clear all partitions first, this is # not guaranteed to work zerombr clearpart --all --drives=vda --initlabel part /boot --fstype=ext4 --size=500 part pv.253002 --grow --size=1 volgroup vg1 --pesize=4096 pv.253002 logvol / --fstype=ext4 --name=lv_root --vgname=vg1 --grow --size=1024 --maxsize=51200 logvol swap --name=lv_swap --vgname=vg1 --grow --size=4032 --maxsize=4032 repo --name="CentOS" --baseurl=http://mirrors.kernel.org/centos/6/os/x86_64 --cost=100 repo --name="Puppet Labs Products" --baseurl=http://yum.puppetlabs.com/el/6/products/x86_64 repo --name="Puppet Labs Dependencies" --baseurl=http://yum.puppetlabs.com/el/6/dependencies/x86_64 repo --name="EyeFi" --baseurl=http://flexo.eye.fi/6/eye-fi-api %packages @core @server-policy puppet facter %end %pre --erroronfail #!/bin/bash for x in `cat /proc/cmdline`; do case $x in SERVERNAME*) eval $x echo "network --onboot yes --device eth0 --bootproto dhcp --hostname ${SERVERNAME}.eye.fi" /tmp/network.ks ;; esac; done %end %post puppet agent --waitforcert 10 --onetime --no-daemon --pluginsync --server puppet.eye.fi %end reboot My kernel arguments are in this following virt-install command that I use to start the install: virt-install -n zabbix -r 2048 --vcpus=2 -l http://mirrors.kernel.org/centos/6/os/x86_64 --disk /dev/vg_inf1/zabbix --network bridge=br85 --initrd-inject=/home/ashinn/vm_kickstart --extra-args "ks=file:/vm_kickstart SERVERNAME=zabbix" --autostart During the install, I can pull up a console on the second terminal and verify the contents of /tmp/network.ks are: network --onboot=yes --bootproto=dhcp --ipv6=auto --hostname=jenkins2.mydomain.com Why might Anaconda be prompting for the TCP/IP settings when they are already set to DHCP?

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Looking to replace Ghost with FSArchiver or Clonezilla, few questions about capabilities

- by Daniel Wright

I work for a PC Repair company and we are looking into setting up a dedicated machine with externally accessible SATA bays to clone harddrives as a safety net incase something goes wrong during a repair. We currently use a SATA/PATA to USB bridge called MagicBridge and Norton Ghost on any workstation, but we're looking to move away from Ghost. We have a computer with a large RAID5 array with Windows Server 2008 Standard currently installed, but this can be replaced with a flavour of *nix. I have some experience with Clonezilla, but FSArchiver also seems like a suitable replacment too. My Head Technician wants to know if my chosen solution (probably Clonezilla or FSArchiver, but I'm open to free suggestions) is capable of: Cloning a degraded RAID, such as a single drive from a RAID1 mirror without complaining Producing images that are easily mountable (he'd prefer them to be mountable in Windows, but if there is no other easy way, *nix should be fine) akin to Ghost Explorer so individual files can be restored as well as being able to do bare metal restores. My apologies for wordiness but I wanted to be thorough in my explaination. Thanks for any suggestions or tips :) EDIT: I've just found out that Clonezilla has a workaround for cloning RADI1 drives EDIT2: Found the answer to both of my questions, aparently I wasn't phrasing my searches right, could this question be deleted please?

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XMLReader mysteriously fails when parsing document

- by Valrus

I have a php script that takes in some XML data and parses it, displaying various bits of information I pull out of it. This has been working fine for over 6 months, until recently it now fails mysteriously on a certain tag. The XML is generated from an outside source(a conferencing bridge), so I have no control over how it is built. I have put the xml through an online validator and it returned no errors. The code also works fine when I connect to another conferencing bridge and get the same output. I have been using XMLReader class so far and tried switching to SmipleXML, but it fails when I create the SimpleXML object using the data. Here is the snippet of where it fails while parsing: <CDR_SUMMARY> <FILE_VERSION>1001</FILE_VERSION> <NAME>Conference Title Hidden</NAME> <ID>10227</ID> <STATUS_STR>Auto_termination,_everybody_quit</STATUS_STR> <STATUS>4</STATUS> <GMT_OFFSET>-4</GMT_OFFSET> <START_TIME>2010-04-14T15:00:33</START_TIME> <DURATION> <HOUR>0</HOUR> <MINUTE>39</MINUTE> <SECOND>37</SECOND> </DURATION> <RESERVE_START_TIME>2010-04-14T15:00:33</RESERVE_START_TIME> <RESERVE_DURATION> <HOUR>12</HOUR> <MINUTE>0</MINUTE> <SECOND>0</SECOND> </RESERVE_DURATION> <MCU_FILE_NAME>c11</MCU_FILE_NAME> <FILE_SAVED>0</FILE_SAVED> <GMT_OFFSET_MINUTE>0</GMT_OFFSET_MINUTE> </CDR_SUMMARY> The <SOUND> opening tag is the last one read before failing. And this is my code: `public function processResponse($xml) { print "Processing List..."; $reader = new XMLReader($xml); try { $reader->setSchema("./schemas/response_trans_cdr_list.xsd"); } catch(Exception $e) { print "Exception:".$e->getMessage(); } //verify xml if($reader->xml($xml)) { while($reader->read()) { //$currentstring = $reader->readstring(); if($reader->name === "ACTION") { //into meat of resposnse while($reader->read()) { //print "Looping..."; //$currentstring = $reader->readInnerXML(); //print $currentstring; if($reader->nodeType == XMLReader::ELEMENT) { if($reader->name === "ID") { $this->conferenceIDs[$this->counter] = $reader->readString(); print "<BR>Conf ID found: ".$this->counter." ID: ".$this->conferenceIDs[$this->counter]; $this->counter += 1; } else if($reader->name === "START_TIME") { //conference start time. print "<BR>Start Time Found! "; $this->conferenceStarts[$this->counter-1] = $reader->readString(); } else if($reader->name === "NAME") { print "<BR> Name Found!"; $this->conferenceNames[$this->counter] = $reader->readString(); } else if($reader->name === "MCU_FILE_NAME") { print "<BR> MCU_FILE_NAME Found!"; //print $this->counter." File Name: ".$reader->readstring()."<BR>"; } else if($reader->name === "RESERVE_START_TIME") { print "<BR> RESERVE_START_TIME Found!"; } else if($reader->name === "FILE_VERSION") { print "<BR> FILE_VERSION Found!"; } else if($reader->name === "STATUS_STR") { print "<BR> STATUS_STR Found!"; } else if($reader->name === "STATUS") { print "<BR> STATUS Found!"; } else if($reader->name === "GMT_OFFSET") { print "<BR> GMT_OFFSET Found!"; } else if($reader->name === "DURATION") { print "<BR> DURATION Found!"; } else if($reader->name === "RESERVE_START_TIME") { print "<BR> RESERVE_START_TIME Found!"; } else if($reader->name === "RESERVE_DURATION") { print "<BR> RESERVE_DURATION Found!"; } else if($reader->name === "FILE_SAVED") { print "<BR> FILE_SAVED Found!"; } else if($reader->name === "GMT_OFFSET_MINUTE") { print "<BR> GMT_OFFSET_MINUTE Found!"; } else if($reader->name === "HOUR") { print "<BR> HOUR Found!"; } else if($reader->name === "MINUTE") { print "<BR> MINUTE Found!"; } else if($reader->name === "SECOND") { print "<BR> SECOND Found!"; } }else if($reader->nodeType == XMLReader::END_ELEMENT) { print "Close Element".$reader->name; } } print "End Action Loop"; } } } else { print "Error reading response: Bad XML returned"; } }` Anyone have any ideas what could be causing this failure? the code exits gracefully and I see the "End Action Loop" message in my output. It's like it just spontaneously exits the loop.

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Installing and running a guest OS on KVM-qemu with only serial console access

- by nixnotwin

I am trying to installing a bsd distro with virt-installer. With a Linux distro I used this: virt-install -n debian -r 1024 --vcpus=1 --accelerate -v --disk /var/kvm/installation-disks/debian.img,size=6--nographics --network=bridge:br0,model=ne2k_pci,mac=52:54:00:66:68:09 -l http://ftp.de.debian.org/debian/dists/squeeze/main/installer-amd64/current/images/ -x console=ttyS0,115200 This loads the installer directly from the online mirror. With Fedora I used this mirror: http://www.nic.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/16/Fedora/x86_64/os/ Are there such mirrors for freebsd or openbsd? The reason I want direct installable ftp/http mirrors is because I can access my physical server only via ssh, and it doesn't have a X server or a window manager to give me a VNC GUI. When I tried installing centos 6 with an online mirror I was able to finish the installation via serial console, but after I rebooted it, the serial console never worked for me. I tried everything possible---editing menu.lst, inttab and securtty files. Fedora 16 booted fine from serial console, but got stuck when it loaded anaconda installer. I tried editing freebsd iso installation media by adding serial console option to boot option. And installation was successful. But couldn't boot into it becuase it wasn't giving console acess. I couldn't edit any files as ufs partition cannot be loaded with write access on my Ubuntu server 10.04. Only debian squeeze worked well, it worked for me even without editing a single configuration file. I want to have CLI versions of fedora/centos and freebsd/openbsd. But, looks like there isn't any hope for me to have them, as I have to depend on a serial console to do everything.

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RRAS Problem routing to central site from RRAS server only?

- by TomTom

Given is an office connected to headquarters using a RRAS bridge (2 virtual machines using RRAS to route between the two networks). Naming: The office is A, the RRAS on A is a-lnk. THe headquartters is B, b-lnk the RRAS machine there. The VPN works perfectly - machines can ping and work between the sites. Domain controllers on both ends replicating, DFS working, remote desktop working. All in all... everything is fine. EXCEPT: a-lnk itself can not reach any machine in B. This would normally not be troublesome (noone ever does anything on a-lnk), but there are two exceptions: * a-lnk is supposed to get it's license from a KMS in B, so not being able to reach B means it is not prolonging. * a-lnk is supposed to pull updates from a WSUS in B - and not being able to reach B means - no updates. Given that thigns work (and security is a minor issue - A-lnk is not reachable from the internet as it is behing a NAT hardware anyway) this got not handled for months. I just wan to get this item ticked off now. Anyone an idea what this is? It definitely is not a "dns does not work" or "routing in general is bad" item, as any computer in A can connect to any computer in B, and the other way arount - only the RRAS computer itself seems to do something really awkward. Platform for both: 2008 R2 standard.

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How to debug a kernel created using ubuntu-vm-builder?

- by user265592

Aim: Trying to perform a code walkthrough of what functions are getting called for sending and receiving packets over the network. I am building a kernel and using gdb for debugging/ tracing purposes. I have build a vm using the following command : time sudo ubuntu-vm-builder qemu precise --arch 'amd64' --mem '1024' --rootsize '4096' --swapsize '1024' --kernel-flavour 'generic' --hostname 'ubuntu' --components 'main' --name 'Bob' --user 'ubuntu' --pass 'ubuntu' --bridge 'br0' --libvirt 'qemu:///system' And I can run the VM successfully in qemu using the following command: qemu-system-x86_64 -smp 1 -drive file=tmpGgEOzK.qcow2 "$@" -net nic -net user -serial stdio -redir tcp:2222::22 Now, I want to debug the kernel using gdb. For this I need an executable with debug symbols(vmlinux), which apparently I don't have, as the vm-builder never asked for any such options and simply created a .qcow2 file. Question 1: Am I taking the correct approach to solve the problem and is there an easier way to do it? Question 2: Is there a way to debug this kernel using GDB? P.S: I don't have hardware support for KVM. Please correct me if I am wrong. Thanks.

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