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  • Debian: Should I add vlan interface into bridge for KVM?

    - by javano
    I am setting up a Debian Squeeze box as a KVM host. I want to add multiple interfaces to each KVM guest so I want them to be on different VLANs. After reading about this, I believe the best method is to add multiple logical VLAN (sub)-interfaces to the physical NICs and then create a bridge adapter for each VLAN interace, and assign each bridge as a NIC for KVM guests. Does this make good sense, or madness? Do I have to use bridged interfaces with KVM like this? Can't I just add eth1.xx and eth1.yy to my interfaces config below and then configure those directly as bridged KVM guest NICs? If so, how should this look in the interfaces config file below? user@host:~$ cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # Management Interface auto eth0 iface eth0 inet static address 172.22.0.31 netmask 255.255.255.0 gateway 172.22.0.1 # Interface for guest VMs auto eth1 # Guest1 : Use VLAN 117 auto eth1.117 iface eth1.117 inet manual # Set up br1 for guest 1, bridging with vlan 117 auto br1.117 iface br1.117 inet manual bridge_ports eth1.117 bridge_stp off user@host:~$ uname -a Linux hostname 3.4.9 #1 SMP Wed Aug 22 19:08:46 BST 2012 x86_64 GNU/Linux UPDATE I would really like it if someone could clarify the config for me, as I have also seen the above configured with this syntax, so I don't see why one would be preferred over the other; # Interface for guest VMs auto eth1 allow-hotplug eth1 iface eth1 inet static # Vlan 117 for guest 1 auto vlan 117 iface vlan111 inet static vlan_raw_device eth1 # Guest 1 : NIC 1 auto br1.117 iface br1.117 inet manual bridge_ports vlan117 bridge_stp off

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  • Best way to attach 96 tb to workstation

    - by user994179
    I'm running a workstation with dual xeon 5690's (12 physical/24 logical cores), 192 gb of ram (ie, maxed-out), Windows 7 64bit, 5 slots for adapter cards, and 1 tb of internal storage, with 5 more internal bays available. I have an app that creates data files totaling about 88 tbs. These are written once every 14 months, and the rest of the time the app only needs to read them; and 95% of the reads are sequential reads of huge chunks of data. I have some control over how big the individual files are, but ideally they would be between 5 and 8 tbs. The app will be reading from only one drive at a time, and the nature of the data is such that if (when) a drive dies I can restore the data to a new disk from tape. While it would be nice to be able to use the fastest drive/controllers available, at this point size matters more than speed. After doing lots of reading, I am leaning toward buying a bunch of cheap 2tb drives and putting them into a bunch of cheap enclosures. All this stuff is going into my home office, so I need to avoid the raised floor/refrigerated approach. My questions: Is the cheap drive/enclosure solution the best one for this situation? Given the nature of the app and the way the data is used, does RAID make sense? If so, which one? For huge sequential reads, would Usb 3.0 and eSata be a wash performance-wise? For each slot available on the workstation, can I hook up an enclosure that can hold multiple drives? Or is it one controller per drive? If I can have multiple drives on one controller, am I essentially splitting the bandwidth (throughput)? For example, if I have a 12 bay enclosure, is the throughput of the controller reduced by a factor of 12? Are there any Windows 7 volume/drive/capacity limits I should be aware of? Thanks

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  • Windows Server task manager displays much higher memory use than sum of all processes' working set s

    - by Sleepless
    I have a 16 GB Windows Server 2008 x64 machine mostly running SQL Server 2008. The free memory as seen in Task Manager is very low (128 MB at the moment), i.e. about 15.7 GB are used. So far, so good. Now when I try to narrow down the process(es) using the most memory I get confused: None of the processes have more than 200MB Working Set Size as displayed in the 'Processes' tab of Task Manager. Well, maybe the Working Set Size isn't the relevant counter? To figure that out I used a PowerShell command [1] to sum up each individual property of the process object in sort of a brute force approach - surely one of them must add up to the 15.7 GB, right? Turns out none of them does, with the closest being VirtualMemorySize (around 12.7 GB) and PeakVirtualMemorySize (around 14.7 GB). WTF? To put it another way: Which of the numerous memory related process information is the "correct" one, i.e. counts towards the server's physical memory as displayed in the Task Manager's 'Performance' tab? Thank you all! [1] $erroractionpreference="silentlycontinue"; get-process | gm | where-object {$.membertype -eq "Property"} | foreach-object {$.name; (get-process | measure-object -sum $_.name ).sum / 1MB}

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  • Broken filesystem on Windows XP / 7 virtual machine

    - by Pekka
    I created a virtual machine with Windows XP as the guest system in Microsoft's Virtual PC that ships along with Windows 7. I then installed Virtualbox and began running the MS machine in it. It worked fine. Then, I accidentally started the machine in Microsoft's Virtual PC again. The screen stayed blank, so after a while, realizing my mistake, I closed the Machine. Since then, the VM won't start any more, claiming massive file system problems. Starting Windows in normal mode results in a SOMETHING_FILESYSTEM blue screen; I can start in protected mode and run a checkdisk. That will fix something on every run, but every time I restart, it will start again. I tried re-booting the VM with the Windows CD and doing a repair install. I didn't watch whether that worked out, but I'm caught in the reset / check disk / reset cycle again. Is there anything VM specific that can still be done? On a physical machine, I would say reformat. Is there any way to get hold of the data on the virtual machine through either Virtual PC or Virtualbox? It was an experimental machine, but I had started entering some data on it that would be nice to recover.

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  • Debian - Secure system from current administrator

    - by netadmin
    Hello, I am the Network and Systems Administrator in an organization of just under 500 users. We have a number of Windows Servers, and that is certainly my area of expertise. We also have a very small handful of Debian servers. We are about to terminate the sysadmin of these Debian systems. Short of powering down the systems, I would like to know how I can ensure that the previous admin does not have control of these systems in the future, at least until we hire a replacement linux sysadmin. I have physical/virtual-console access to each of the systems, so I can reboot them in various user-modes. I just don't know what to do. Please assume that I do not currently have root access to all of these systems (an oversight on my part that I now recognize.) I have some experience in Linux, and use it on my desktop on a daily basis, but I must admit that I am a competent user of linux, not a systems admin. I have no fear of the command line however.... Is there a list of steps that one should take to "secure" a system from somebody else? Again, I assure you that this is legit, I am re-taking control of my employer's systems, at the request of my employer. I hope to not have to shut the systems down permanently and still be reasonably certain that they are secure. Thanks for your time.

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  • Converting An Older VMWare Image to ESXi

    - by Bart Silverstrim
    I have just installed VMWare ESXi and imported one physical machine without issue and one virtual machine, from an older version of VMWare Server on a Linux system, to it without issue. But I have another machine (Windows XP), virtual running on the VMWare Server, that I can't get the Converter to work with. Converter runs, says everything is fine, but when I go to the ESXi VSphere manager and hit the button to power up that vm, the console stays black with a blinking cursor and the processor for that VM spikes 100% and stays there. An event log item in VSphere warns something about activation issues with Windows. Has anyone else run into this issue before? Is it something with the disk controller? I copied the folder with the VM directly to the storage drive on ESXi hoping to create a new machine and point the data store to that folder or at least that drive image; nope, something about not using an IDE controller (must be something with the older format). In short, converter is doing something that particular machine doesn't like, and I can't find a way to simply open that hard disk image or convert it unless someone else has seen this. I try attaching a bootable CD image for disk repair to see if it can check the hard drive but I can't seem to get the console to boot from it...either too slow on the button or it just isn't able to easily boot from a virtual drive image (.iso). Any suggestions or help?

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  • How to fix display on external Samsung Syncmaster shifted to the right when connected to Macbook Pro?

    - by joe larson
    Is there something special I need to do to be able to use external LCD displays with my new MacBook Pro? Do I need extra software, or do I possibly need a different cable? I'm attempting to use an external display with my MBP. I've got a "Mini DisplayPort to VGA Female Adapter for Mac", plugged into the thunderbolt port on my MBP, which I understood should be compatible with thunderbolt. I've tried this with three different SyncMaster models: a B2330 (21.5"), a EX2220 (22"), and a third (also 22" ish) which I don't have the model # for -- but all are 1920x1080 resolution; plus an additional HP monitor of similar size and resolution. In all four cases, the MBP recognizes the screen and choses the correct resolution. However, the display is shifted over about 1 inch. This is true no matter if I change screen resolutions also. The controls on the monitor for horizontal position don't help. Also, sometimes (especially if I drag an app over into the second screen), the screen starts skipping left to right and having bands of fuzz. Additionally, the monitor will periodically blink off for a moment, trying to switch from Digital to Analog and back (the Syncmaster shows text on the screen to tell you it's trying to do this). Often when it comes back from one of these blank-outs, it will show OK (no skipping or fuzz) but still shifted right; then after a few seconds it will go wrong again skipping and fuzzy. This photo shows the worst of it. I've added red rectangles to show the physical edge of the screen, and a yellow rectangle to show the empty space on the left of the screen. (Sorry for the awful quality and lighting!) Also, it's worth noting I am on Mac OS X 10.6.7, and yes I have this update 1.4 installed.

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  • Expand disk space on Ubuntu 10.04 (VMWare Guest)

    - by Jason Clawson
    I need to resize the disk space of an ubuntu guest in VMWare Workstation. After using the expand disk utility in vmware workstation, I need to do some linux magic to resize the parition. I have searched and found a lot of posts about resizing it. Unfortunately I don't really understand it all that well. Can anyone help me out with this? df -h gives me: Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu-root 19G 2.6G 16G 15% / none 496M 172K 495M 1% /dev none 500M 0 500M 0% /dev/shm none 500M 64K 500M 1% /var/run none 500M 0 500M 0% /var/lock none 500M 0 500M 0% /lib/init/rw none 19G 2.6G 16G 15% /var/lib/ureadahead/debugfs /dev/sda1 228M 36M 181M 17% /boot lvs says: LV VG Attr LSize Origin Snap% Move Log Copy% Convert root ubuntu -wi-ao 18.88g swap_1 ubuntu -wi-ao 884.00m fdisk -l says: Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00033718 Device Boot Start End Blocks Id System /dev/sda1 * 1 32 248832 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 32 2611 20719617 5 Extended /dev/sda5 32 2611 20719616 8e Linux LVM I really appreciate the help.

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  • tap interfaces always disabled in linux bridge

    - by Dani Camps
    I have a physical interface eth0, and I want to create two virtual interfaces and bridge them with eth0. For this purpose I do: #Create the virtual interfaces tunctl -t tap0 tunctl -t tap1 ifconfig tap0 up ifconfig tap1 up #Create the bridge brctl addbr br0 brctl stp br0 off brctl addif br0 eth0 brctl addif br0 tap0 brctl addif br0 tap1 #Turning up the bridge ifconfig br0 up However my problem if that the tap interfaces always appear disabled in the bridge, and no traffic flows to them. $brctl show br0 bridge name bridge id STP enabled interfaces br0 8000.080027cabeba no eth2 tap0 tap1 $brctl showstp br0 br0 bridge id 8000.080027cabeba designated root 8000.080027cabeba root port 0 path cost 0 max age 20.00 bridge max age 20.00 hello time 2.00 bridge hello time 2.00 forward delay 15.00 bridge forward delay 15.00 ageing time 300.01 hello timer 0.00 tcn timer 0.00 topology change timer 0.00 gc timer 298.42 flags eth2 (1) port id 8001 state forwarding designated root 8000.080027cabeba path cost 4 designated bridge 8000.080027cabeba message age timer 0.00 designated port 8001 forward delay timer 12.97 designated cost 0 hold timer 1.24 flags tap0 (2) port id 8002 state disabled designated root 8000.080027cabeba path cost 100 designated bridge 8000.080027cabeba message age timer 0.00 designated port 8002 forward delay timer 0.00 designated cost 0 hold timer 0.00 flags tap1 (3) port id 8003 state disabled designated root 8000.080027cabeba path cost 100 designated bridge 8000.080027cabeba message age timer 0.00 designated port 8003 forward delay timer 0.00 designated cost 0 hold timer 0.00 flags Is there any way to set the tap interfaces in forwarding state? I do not understand why they are not because STP is disabled. Cheers Daniel

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  • Windows Server 2008 R2 - Cannot Change DNS Domain Context on Some Machines

    - by Richie086
    So I have a small Windows Server 2008 R2 network consisting of a domain controller, a file server, sql server, etc. All machines are joined to a windows domain (CPUSHIELD.COM) and show up in Active Directory Users and Computers under the Computers OU. Each computer has a DNS record as well that was populated when I joined each computer to the domain. However, when I go to my SQL server VM (which is joined to CPUSHIELD.COM) and try to add domain users or groups to the local users or groups on my file server (which is a physical machine) or my sql server (which is a virtual machine), for some reason I cannot change the context to the CPUSHIELD.COM domain.. For example: Here is the really strange thing, I have two other servers on my network that do show CPUSHIELD.COM in the From This Location field (as I would expect with any machine joined to a domain) and I am able to search the local machine and/or domain for users/groups to add. I have done hundreds of Windows Server 2008 installs and this is the first time I have run into this issue. Any ideas? Let me know if you need more info

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  • IIS 7.5 stops serving requests for no apparent reason

    - by Steffen
    We're running a site on 4 virtual Win 2008 R2 64 bit servers. This is the only site on the IIS, and we use Windows Network Load Balancing to share the load between our 4 virtual servers. We've used these virtual servers for approximately a week, and we're starting to see some issues. For no apparent reason the IIS stops serving pages, and doesn't even respond with an error. So upon requesting a page from the server, the browser just waits infinitely (or until it decides to give up clientside) Sometimes an iisreset fixes the issue, other times we have to reboot the entire virtual server. There are no traces in the eventlog of why this happens, and there's no traces in our applications exception log neither. Furthermore this happens even when there's a very small load on the server, so it doesn't seem to be because it's flooded with requests. So frankly I'm at a loss here - I have no idea where to start debugging this issue :-( I'm quite certain we never had these issues on our physical servers, however they were running Win 2003 32bit, so there are quite a few differences between them and the virtual ones. (Which obviously makes it difficult to tell what exactly causes this)

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  • Monitor reset itself and now I can't set the resolution/settings back to how it was before

    - by verve
    I've had my LG 24" widescreen monitor since 2009 and 2 weeks ago I noticed the monitor turned itself off (never had it done this before) so I switched it back on to find all the settings like gamma, resolution etc. different = looked like it had been reset. Everyone in the house swears they never unplugged and plugged it back in. When I opened a webpage the fonts and zoom on the pages were different and my desktop was strange too; fonts of the icons were different etc. The screen seems blurry and when I watch movies the faces look distorted so I thought I would try to first figure out the resolution it used to be but when I go under "Adjust screen resolution" none of the options work and there is no recommended resolution marked; all the options stretch out the screen and looks terrible so right now I have it set to the least distorted one. Then since the resolution wasn't working I set the other manual settings(done by physical buttons on the monitor) back to how it used to be (luckily, I had written these down). The monitor looks better but the resolution makes it a strain to use. I thought maybe some Windows update caused this crap so I tried to System Restore: didn't work. What went wrong? A few questions: 1) What was the likely cause of the monitor shutting down itself and screwing up the settings I have been using since the day I bought the monitor? 2) Why have the fonts changed everywhere unless this is a HDD/video card problem? 3) How do I find the perfect resolution it used to be? The monitor wants me to set it to 1920 x 1080 but that isn't one of the options although I don't remember what resolution I used before. I use the 16:9 setting while I try the available resolution options but nothing looks good! How do I find what it used to be? Manual available in PDF under Support: http://www.lg.com/ca_en/computer-products/monitors/LG-lcd-monitor-W2442PA-BF.jsp Win 7. IE 9.

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  • How does Windows 7 DNS client work?

    - by Mark Allison
    I am using a local DHCP and DNS server on my home network on a linux machine. It is running CentOS 6.3 with dnsmasq 2.48. It's all working fine except for local DNS lookups for Windows machines only. I have a mix of Ubuntu, CentOS and Windows machines on the network, some virtual, some physical. I have a machine called boron and the domain is called localdomain If I ping boron from any linux machine, I get [root@lithium lists]# ping -c3 boron PING boron.localdomain (10.0.0.5) 56(84) bytes of data. 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=1 ttl=64 time=0.740 ms 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=2 ttl=64 time=0.478 ms 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=3 ttl=64 time=0.458 ms --- boron.localdomain ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2000ms rtt min/avg/max/mdev = 0.458/0.558/0.740/0.131 ms If I do it from my Windows 7 machine, I get: Ping request could not find host boron. Please check the name and try again. If I try ping boron.localdomain I get: Pinging boron.localdomain [67.215.65.132] with 32 bytes of data: Reply from 67.215.65.132: bytes=32 time=16ms TTL=57 Reply from 67.215.65.132: bytes=32 time=188ms TTL=57 Reply from 67.215.65.132: bytes=32 time=15ms TTL=57 Reply from 67.215.65.132: bytes=32 time=14ms TTL=57 Ping statistics for 67.215.65.132: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 14ms, Maximum = 188ms, Average = 58ms which is clearly wrong. Why is it going out to the internet? Why can't my windows machine resolve the boron hostname to a FQDN? My Windows machines and linux machines get their network config from DHCP. UPDATE If I do ipconfig /all in Windows, it looks as I would expect: Windows IP Configuration Host Name . . . . . . . . . . . . : lanthanum Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : .localdomain Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : .localdomain Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : 50-E5-49-38-FC-A2 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 10.0.0.57(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 23 August 2012 13:58:45 Lease Expires . . . . . . . . . . : 24 August 2012 07:58:48 Default Gateway . . . . . . . . . : 10.0.0.6 DHCP Server . . . . . . . . . . . : 10.0.0.6 DNS Servers . . . . . . . . . . . : 10.0.0.6 208.67.222.222 208.67.220.220 NetBIOS over Tcpip. . . . . . . . : Enabled When I do an nslookup I get: Server: carbon.localdomain Address: 10.0.0.6 *** carbon.localdomain can't find boron: Unspecified error However if I do ifconfig -a in Linux I get: [root@nitrogen ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0C:29:AF:EC:2A inet addr:10.0.0.7 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:187687 errors:0 dropped:0 overruns:0 frame:0 TX packets:5857 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:23910700 (22.8 MiB) TX bytes:712964 (696.2 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:329894 errors:0 dropped:0 overruns:0 frame:0 TX packets:329894 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:67153143 (64.0 MiB) TX bytes:67153143 (64.0 MiB) and nslookup: [root@nitrogen ~]# nslookup boron Server: 10.0.0.6 Address: 10.0.0.6#53 Name: boron Address: 10.0.0.5 Both machines are on the same network using the same DHCP server. UPDATE 2 I thought the issue was resolved but I am getting intermittent DNS resolving issues but only on my Windows 7 machine. All my linux boxes are fine. This is what happens when I ping and nslookup from Windows to a Windows 2008 Server: C:\Users\mark>nslookup magnesium Server: carbon.localdomain Address: 10.0.0.6 Name: magnesium.localdomain Address: 10.0.0.12 C:\Users\mark>ping magnesium Pinging magnesium.localdomain [67.215.65.132] with 32 bytes of data: Reply from 67.215.65.132: bytes=32 time=267ms TTL=57 Reply from 67.215.65.132: bytes=32 time=162ms TTL=57 Reply from 67.215.65.132: bytes=32 time=510ms TTL=57 Reply from 67.215.65.132: bytes=32 time=146ms TTL=57 Ping statistics for 67.215.65.132: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 146ms, Maximum = 510ms, Average = 271ms And from Linux: [root@beryllium ~]# ping -c4 magnesium PING magnesium.localdomain (10.0.0.12) 56(84) bytes of data. 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=1 ttl=128 time=0.176 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=2 ttl=128 time=0.634 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=3 ttl=128 time=0.685 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=4 ttl=128 time=0.263 ms --- magnesium.localdomain ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3002ms rtt min/avg/max/mdev = 0.176/0.439/0.685/0.223 ms [root@beryllium ~]# nslookup magnesium Server: 10.0.0.6 Address: 10.0.0.6#53 Name: magnesium.localdomain Address: 10.0.0.12 UPDATE 3 I stopped the Windows DNS client on my Windows 7 machine with net stop dnscache and it is now working fine. It would be nice to get DNS working with the DNS client on, but I might be OK without it, what do you think?

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  • What is the difference between the Linux and Linux LVM partition type?

    - by ujjain
    Fdisk shows multiple partition types. What is the difference between choosing 83) Linux and 8e) Linux LVM? Choosing 83) Linux also works fine for using LVM, even creating a physical volume on /dev/sdb without a partition table works. Does picking a partition type in fdisk really matter? What is the difference in picking Linux or Linux LVM as partition type? [root@tst-01 ~]# fdisk /dev/sdb WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): l 0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT- 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT- 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT- 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx 5 Extended 42 SFS 86 NTFS volume set da Non-FS data 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / . 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/ 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT 1e Hidden W95 FAT1 Command (m for help):

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  • Oracle logical standby fails with ORA-01919

    - by DCookie
    I have an Oracle logical standby database being managed via data guard. Just this morning the redo apply process began failing with an ORA-01919 error, indicating one of our application roles did not exist. However, I can see the role on both primary and standby databases. We also have a physical standby that has long since applied the redo where this is happening on the logical, without issue. I have opened an SR with Oracle. I was wondering if anyone out there has seen this before. I guess I should mention: Oracle 10.2.0.4, Win2003 Server SP2. UPDATE: So far, Oracle Support has not provided an answer. I thought I'd post here what I have learned so far. It appears that a grant of DBA on the primary host to a role works fine for users granted the role. It does not work on the logical standby. IOW: create role TEST; grant dba to TEST; grant TEST to auser; connect auser set role TEST; grant <existing role> to <existing user>; This works on the primary instance but fails on the logical. A workaround appears to be to grant each role on the primary to the role TEST with admin option in the logical: grant <existing role> to TEST with admin option; <== do this on the logical standby Then the command works on the logical standby.

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  • Free tiered storage automation in linux?

    - by NginUS
    I have a couple virtualized fileservers running in QEMU/KVM on ProxmoxVE. The physical host has 4 storage tiers with significant performance variances. They're attached both locally and via NFS. These will be provided to the fileserver(s) as local disks, abstracted into pools, and handling multiple streams of data for the network. My aim is for this abstraction layer to intelligently pool the tiers. There's a similar post on the site here: Home-brew automatic tiered storage solutions with Linux? (Memory - SSD - HDD - remote storage) in which the accepted answer was a suggestion to abandon a linux solution for NexentaStor. I like the idea of running NexentaStor. It almost fits the bill. NexentaStor provides Hybrid Storage Pools, and I love the idea of checksumming. 16TB without incurring licensing fees is a huge plus as well. After the expense of the hardware, free is about all my budget can handle. I don't know if zfs pools are adaptive or dynamically allocated based on load, but it becomes irrelevant since NexentaStor doesn't support virtio network or block drivers, which is a must in my environment. Then I saw a commercial solution called SmartMove: http://www.enigmadata.com/smartmove.html And it looks like a step in the right direction, but I'm so broke I'd be wasting their time to even ask for a quote, so I'm looking for another option. I'm after a linux implementation that supports virtio drivers, and I'm at a loss as to which software is up to it.

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  • RAID administration in Debian Lenny

    - by Siim K
    I've got an old box that I don't want to scrap yet because it's got a nice working 5-disk RAID assembly. I want to create 2 arrays: RAID 1 with 2 disks and RAID 5 with the other 3 disks. The RAID card is Intel SRCU31L. I can create the RAID 1 volume in the console that you access with Ctrl+C at startup. But it only allows for creation of one volume so I can't do anything with the 3 remaining disks. I installed Debian Lenny on the RAID 1 volume and it worked out nicely. What utilites could I now use to create/manage the RAID volumes in Debian Linux? I installed the raidutils package but get an error when trying to fetch a list: #raidutil -L controller or #raidutil -L physical # raidutil -L controller osdOpenEngine : 11/08/110-18:16:08 Fatal error, no active controller device files found. Engine connect failed: Open What could I try to get this thing working? Can you suggest any other tools? Command #lspci -vv gives me this about the controller: 00:06.1 I2O: Intel Corporation Integrated RAID (rev 02) (prog-if 01) Subsystem: Intel Corporation Device 0001 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Step ping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR- INTx- Latency: 64, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 26 Region 0: Memory at f9800000 (32-bit, prefetchable) [size=8M] [virtual] Expansion ROM at 30020000 [disabled] [size=64K] Capabilities: <access denied> Kernel driver in use: PCI_I2O Kernel modules: i2o_core

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  • HP G61 Laptop wont boot- display stays off, caps and num lock indicators blink repeatedly

    - by Benguy12
    I had my HP G61 laptop running in sleep for a while. When I came back to it about a half-hour later, it was no longer in sleep mode - the power light and the Wi-Fi indicator light were on (I keep Wi-Fi off becuase I use a wired connection) - but nothing was showing on screen. In fact, the display wasn't even turned on. So I let it sit for about 10 minutes but nothing happened. I did a force shut down and rebooted. Instead of a normal boot, the display didnt turn on, the Wi-Fi indicator was off, and the Caps Lock and Num Lock lights just blinked repeatedly. On the external keyboard i use, none of the light indicators were blinking or even on. I tried force shut-down again 10 times, then unplugged all connections except for the power cable (my laptop battery dosent hold a charge for more than 2 minutes, so I always must have a wall connection) and tried to boot again but still nothing happened. I unplugged the battery and even then nothing happened. I also tried booting with the disk drive open, and then with it closed again. On the time it was closed, I was able to successfully boot into Windows, but recieved a "Windows did not shut-down sucessfully" notice. Does anybody know why this may have happened? My PC's specs: Windows 7 Home Premium, 64-bit 4GB of physical RAM, 8GB of vRAM (on a flash drive) AMD Vision x64 processor (don't know any other specs about it) ATI Radeon graphics card, 392 MB DVD-R/W lightscribe drive 2 External hard-disks (first one is 1.5TB, second one is 1TB) custom boot-screen and boot-annimation Standard BIOS apps running before sleep: firefox 10.4 itunes 10.6 adobe photoshop extended CS5.1 rockstar games social club (running in background) microsoft powerpoint 2010 professional edition google chrome I was NOT running Aero or any fancy themes - I was using the normal windows classic theme. I have a desktop icon manager application called Stardock Fences that was also running (it runs as a service/process).

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  • Find the IP of the router between me and main router/gateway?

    - by Crash893
    I have a Netgear router that is the main router/gateway in and out of the network. Then I have a Linksys 54g router with WiFi that we use as are main WiFi access point The Cat5 runs from the router to the WiFi routers LAN port (not WAN). And then if you connect to that WAP you are basically on the network. I want to be able to find out what the IP address of that WAP is but so far I can't figure out how to: I've tried doing a tracert to the gateway IP but I get nothing. I've scanned all the IP addressed in the network. I've gone to the Netgear main router and looked under attached devices but it doesn't say anything. Any ideas on how I can figure out how to administer it? (I do have limited physical access but my attempt to plug into it came back with a faulty IP (in the 169 range where the rest of the office is 192.168...). I never set this router up to begin with so I'm reluctant to just kill it with the reset button because I can't get into see what the settings are set to.

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  • Production monitoring for EC2 instances

    - by Janine
    I'm setting up my first production instance on EC2 and want to make sure I have all necessary monitoring in place. There are three different types of things I want to monitor: Is the instance running? EC2 instances can be terminated without warning if the underlying hardware fails, and as far as I know they aren't automatically restarted. So if not, start it back up. Is UNIX running properly? This is the usual stuff about CPU load, disk space, etc. Is the website responding? If not, restart it. I initially set up Nagios on a physical server outside the cloud, but it is really only helpful for item 2. It can tell me if the instance is gone or if the website is not responding, but as far as I can tell it can't execute any commands to fix the situation. My Googling on this subject has yielded a plethora of options - Cacti, Monit, God, Ganglia, and probably more I'm forgetting now. I don't have time to research them all. I am aware of Amazon's Cloudwatch but it doesn't seem to do anything that my Nagios installation doesn't already do. If you already have something like this in place, can you please share what has worked well for you?

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  • Degraded RAID-5 array with lvm2 lost superblock and partition table

    - by Fred Phillips
    I have a RAID-5 array of 4x1TB hard disks with one lvm2 partition on Ubuntu Linux 10.04 LTS. One of the disks has failed. I have re-assembled the array without this failed disk but now mdadm --examine claims the array has no superblock and fdisk says it has no partition table. What can I do to recover the data? # mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Mar 5 14:43:49 2011 Raid Level : raid5 Array Size : 2930276352 (2794.53 GiB 3000.60 GB) Used Dev Size : 976758784 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Sat Mar 5 15:06:49 2011 State : clean, degraded Active Devices : 3 Working Devices : 3 Failed Devices : 1 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : boba:1 (local to host boba) UUID : 52eb4bc9:c3d8aab5:e0699505:e0e1aa05 Events : 18 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 65 1 active sync /dev/sde1 2 8 49 2 active sync /dev/sdd1 3 0 0 3 removed 4 8 17 - faulty spare /dev/sdb1 # mdadm --examine /dev/md0 mdadm: No md superblock detected on /dev/md0. # fdisk -l /dev/md0 Disk /dev/md0: 3000.6 GB, 3000602984448 bytes 2 heads, 4 sectors/track, 732569088 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 524288 bytes / 1572864 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table # cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] md0 : active raid5 sdb1[4](F) sda1[0] sdd1[2] sde1[1] 2930276352 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UUU_] unused devices: <none>

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  • iptables forwarding to a dummy interface

    - by madinc
    Hi, I'm trying to accomplish the following: I have a box with a service listening on a dummy interface (say 172.16.0.1), udp port 5555. Now what I'd like to do is to take packets that arrive on interfaces eth0 (1.1.1.1:5555) and eth1 (2.2.2.2:5555) and forward them to the service on the dummy interface, and have replies go back to clients out the same physical interface they came in. Clients must think they're talking to 1.1.1.1:5555 or 2.2.2.2:5555. I think I need a mix of iptables rules and packet marking, plus some iproute rules (if it's possible at all). What I tried is to catch packets coming in from eth0 and eth1, udp port 5555, and mark them with 1 and 2 respectively, and --save-mark in the connmark. Then I used a DNAT to 172.16.0.1. The service seems to be getting the packets. Now I'm not sure how to do the reverse. It seems that for packets originating from the box, you can't do anything before the routing decision, but that would be the place to restore the marks, and thus make a routing decision based on those. Here's what I have so far: iptables -t mangle -A PREROUTING -d 1.1.1.1 -p udp --port 5555 -j MARK --set-mark 1 iptables -t mangle -A PREROUTING -d 2.2.2.2 -p udp --port 5555 -j MARK --set-mark 2 iptables -t mangle -A PREROUTING -d 1.1.1.1 -p udp --port 5555 -j CONNMARK --save-mark iptables -t mangle -A PREROUTING -d 2.2.2.2 -p udp --port 5555 -j CONNMARK --save-mark iptables -t nat -A PREROUTING -m mark --mark 1 -j DNAT --to-destination 172.16.0.1 iptables -t nat -A PREROUTING -m mark --mark 2 -j DNAT --to-destination 172.16.0.1 # What next? As I said, I'm not even sure it can be done. To give a bit of background, it's an old OpenVPN installation that cannot be upgraded (otherwise I'd install a recent version that supports multihoming natively). Thanks for any help.

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  • How to set up the jdbc driver to connect to hsqldb from libreoffice?

    - by rumtscho
    I am trying to "split" a LibreOffice .odb file into a HSQL database and an OpenOffice document containing forms and macros. I am trying to follow the instructions from this thread: Within a few minutes you can convert your embedded HSQLDB to a stand-alone HSQLDB which is just a very fine database engine. 1) Download and extract the current version from http://hsqldb.org/ and point the Java class path in ToolsOptionsJava to the new hsqldb.jar 2) Extract the database folder from your embedded database and rename the files data, properties, script to name.data name.properties, name.script where "name." is an arbitrary name prefix. 3) Connect a Base document to an existing JDBC database such as jdbc:hsqldb:file:/home/chenier/hsqldb/name;default_schema=true;shutdown=true;hsqldb.default_table_type=cached;get_column_name=false (again, "name" refers to your own file name prefix). This local single-user connection gives you much more than the embedded HSQLDB. 4) Copy queries, forms and reports from the old database over to the new one. The wizard presents me with a window expecting two inputs: a "Datasource URL" and a "JDBC driver class". As far as I can tell, the tutorial above only tells me what to put into the Datasource URL. As for the JDBC driver class, I have no idea what to write into this field. I tried the fully-qualified name of the Java class, org.hsqldb.jdbc.JDBCDriver as given in the HSQLDB documentation. When that failed, I tried the physical path /var/lib/hsqldb/lib/hsqldb.jar (although that should have been unnecessary, because first I pointed to this path as described under 1 and then restarted LibreOffice). In both cases, "Test class" failed with the message "The JDBC driver could not be loaded". OpenOffice's documentation doesn't say anything sensible about the field, it was something like "enter the JDBC driver in this box". Any ideas what I should enter there to get the connection working?

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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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  • FastCGI Error when installing PHP on IIS7.5

    - by ytoledano
    I'm trying to install MediaWiki on a Win2008r2 server, but can't manage to install PHP. Here's what I did: Grabbed a Zip archive of PHP and unzipped it into C:\PHP. Created two subdirs: c:\PHP\sessiondata and c:\PHP\uploadtemp. Granted modify rights to the IUSR account for the subdirs. Copied php.ini-production as php.ini Edited php.ini and made the following changes: fastcgi.impersonate = 1 cgi.fix_pathinfo = 1 cgi.force_redirect = 0 open_basedir = "c:\inetpub\wwwroot;c:\PHP\uploadtemp;C:\PHP\sessiondata" extension = php_mysql.dll extension_dir = "./ext" upload_tmp_dir = C:\PHP\uploadtemp session.save_path = C:\php\sessiondata Install Web server role, selected CGI and HTTP Redirection options. In the Handler Mappings: Added Module Mapping. Entered the following values: Path = *.php, Module = FastCgiModule, Executable = c:\php\php-cgi.exe, Name = PHP via FastCGI. Created a test page into wwwroot directory: phpinfo.php and set the contents like this: < ?php phpinfo(); ? Browsed to http://localhost/phpinfo.php But then I get: HTTP Error 500.0 - Internal Server Error An unknown FastCGI error occured Detailed Error Information Module: FastCgiModule Notification: ExecuteRequestHandler Handler: PHP via FastCGI Error Code: 0x800736b1 Requested URL: http://localhost:80/phpinfo.php Physical Path: C:\inetpub\wwwroot\phpinfo.php Logon Method: Anonymous Logon User: Anonymous Does anyone know what I'm doing wrong here? Thanks.

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