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  • Can Linux report IP conflicts?

    - by James
    If a Red Hat or other Linux host has a conflict with an IP address, is there a way to have it display a warning message on the console or in a log, like Windows and MacOS do? i.e. my computer has an IP address configured (or received from a DHCP server) but finds another device on the network using the assigned address. Will it log the conflict?

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  • perf tuning for ESX vmfs3 on RAID

    - by maruti
    looking for recommendations on ESX4 OS - VMFS version3: RAID-5 : matching the stripe size with VMFS block size? (64K, 128K etc) RAID controller options: "adaptive read ahead, write-back" on PERC 6i 90% VMs on server are Windows (2008, 2003, Vista etc, SQL 2005 etc) i have read that smaller stipes are good for writes and larger for reads. Since this is virtual env, not sure whats good.

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  • How to scan local network (LAN) for connected devices (MacOS)

    - by smotchkkiss
    I'm basically looking for something like this but available on Mac. I am trying to connect a new workstation to our wireless multifunction printer and I'm having a hell of a time getting the device to spit out an IP for me to connect to. Is there a way I can scan the network somehow? If it makes a difference, the new workstation is using MacOS X 10.6 Thanks in advance :)

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  • Updated Win XP to 7: network adapter driver problem

    - by jiri
    I updated Windows XP on my old laptop to Windows 7. After installing I tried to open internet connection but Win 7 says that it cannot find network adapter because of a missing driver. I tried to find network adapter from device manager but could not find one. My network connection was working fine on Win XP. What has happened, how to update my network adapter driver for Windows 7?

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  • Windows Setup could not configure Windows to run on this computer's hardware

    - by Hello71
    The whole installation goes smoothly up to the point of "Completing installation ...". The monitor changes resolution, after which a standard dialog box pops up saying Windows Setup could not configure Windows to run on this computer's hardware Then, in a few seconds, the whole machine powers down. Trying to restart produces the message: STOP: c000021a {Fatal System Error} 0x00000000 (0xc0000001 0x00100448) OR it boots into Setup and comes up with the message: Windows Setup encountered an unexpected error... (This is not the actual error, just paraphrasing) I tried using the OEM restore instead of a regular install, but it fails with the same error. (Even though it worked before...) General specs: HP Pavilion Elite e9262f Intel Core i5-750 Processor ATI Radeon HD 4650 Hitachi HDT721010SLA360 ATA Device 6GB DDR3 RAM SuperMulti DVD Burner with LightScribe Some built-in Wi-Fi module http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01916917 I've tried disconnecting the wireless card and disabling the built-in Ethernet and Firewire via the BIOS, and replacing the wireless keyboard and mouse with wired USB ones. Didn't work. I've also tried changing the SATA controller settings in the BIOS to RAID, AHCI, and IDE, reinstalling each time I changed. Still not working. I think the reason why it is showing the Fatal System Error is because it didn't finish installing before it errored out and shut down, so the system is left in an inconsistent state. I've tried 3 different copies (including the OEM restore) of Windows 7 now, and they're all failing at the same point, with the same error message. I've tried to install Windows 7 maybe 10 times already, with the exact same error message at the exact same location. Hm... Interestingly, the 32-bit version of Windows 7 works, but the 64-bit version doesn't. Perhaps it was a badly burned disk? Reburning the 64-bit version still comes up with the same error. Here's a picture of the side of the case that clearly says it came with Windows 7 64-bit, along with the model number and CPU. sudo fdisk -l: Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 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: 0x0009896f Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 7 HPFS/NTFS /dev/sda2 14 94119 755906445 7 HPFS/NTFS /dev/sda3 119922 121602 13492224 7 HPFS/NTFS /dev/sda4 94120 119922 207257740+ 5 Extended /dev/sda5 119527 119922 3170769 82 Linux swap / Solaris /dev/sda6 107174 119526 99225441 83 Linux /dev/sda7 94120 107173 104856192 7 HPFS/NTFS Partition table entries are not in disk order

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  • recommendations for efficient offsite remote backup solution of vm's

    - by senorsmile
    I am looking for recommendations for backing up my current 6 vm's(and soon to grow to up to 20). Currently I am running a two node proxmox cluster(which is a debian base using kvm for virtualization with a custom web front end to administer). I have two nearly identical boxes with amd phenom II x4's and asus motherboards. Each has 4 500 GB sata2 hdd's, 1 for the os and other data for the proxmox install, and 3 using mdadm+drbd+lvm to share the 1.5 TB's of storage between the two machines. I mount lvm images to kvm for all of the virtual machines. I currently have the ability to do live transfer from one machine to the other, typically within seconds(it takes about 2 minutes on the largest vm running win2008 with m$ sql server). I am using proxmox's built-in vzdump utility to take snapshots of the vm's and store those on an external harddrive on the network. I then have jungledisk service (using rackspace) to sync the vzdump folder for remote offsite backup. This is all fine and dandy, but it's not very scalable. For one, the backups themselves can take up to a few hours every night. With jungledisk's block level incremental transfers, the sync only transfers a small portion of the data offsite, but that still takes at least a half an hour. The much better solution would of course be something that allows me to instantly take the difference of two time points (say what was written from 6am to 7am), zip it, then send that difference file to the backup server which would instantly transfer to the remote storage on rackspace. I have looked a little into zfs and it's ability to do send/receive. That coupled with a pipe of the data in bzip or something would seem perfect. However, it seems that implementing a nexenta server with zfs would essentially require at least one or two more dedicated storage servers to serve iSCSI block volumes (via zvol's???) to the proxmox servers. I would prefer to keep the setup as minimal as possible (i.e. NOT having separate storage servers) if at all possible. I have also briefly read about zumastor. It looks like it could also do what I want, but it appears to have halted development in 2008. So, zfs, zumastor or other?

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  • Software to measure power draw of HP Server

    - by tombull89
    I'm after some software to measure the power draw of a HP Server, namely a DL360 series. I know Nagios is used for logging and monitering but I'm not sure if it logs power usage as well. I've also tried to find the HP Server Management package but am not sure if this shows power usage either. I'm thinking my best bet would to buy some sort of device that goes inbetween the wall and the servers plug. Can anybody suggest what would do for me?

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  • OS X wants to back up Macintosh HD to itself

    - by slhck
    From time to time, OS X (10.6) will ask me if I want to perform a backup of my Macintosh HD, but the backup destination is obviously the HD itself. I have not plugged in any external device, nor is there a Time Capsule network share. A message like this will appear: Moreover, the Macintosh HD will suddenly have a Time Machine icon in Finder. Has somebody experienced the same and could help me identify how to stop OS X from using its own disk as the backup destination?

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  • Configure LAN Router To Prevent Illegal Torrenting?!

    - by Goober
    Scenario I have a typical broadband setup at home (It's a flatshare I have no control over who uses the house) and I want to prevent anyone using it from illegally downloading via torrents etc. Question Is there a way in which I can configure the router to block all forms of illegal downloads?

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  • NAS box discs sharing in domain

    - by Murdock
    I got problem with data sharing of my QNAP NAS Box TS-409 Series with 3 x 750 GB disk (in RAID 5) into domain via File server service. This device is designed mainly to be mapped as a network drive and through its own interface are configured users and policies. I'd like to have it bound with domain user accounts a there to set up security and other policies. Thanks for any suggestion.

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  • How to copy-paste in good quality from Adobe Illustrator to MS One Note?

    - by Suzan Cioc
    When I copy some drawing in Illustrator, it stores it in clipboard in 3 formats: bitmap, device independent bitmap and enhanced meta-file. If drawing contains text, then meta-file version has no anti-aliasing. Below are examples in MS Word OneNote has no "Paste Special" so it always paste in EMF. Is it possible either to tell OneNote to paste not in EMF, or tell Illustrator to use anti-aliasing while storing picture with letters?

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  • Accidentally moved FUSE mounted mount point, not cannot unmount. Any option besides reboot?

    - by Catskul
    I mounted a disk image using a few different FUSE modules and then subsequently renamed the parent directory. The mounts have disappeared from the mtab and now the OS refuses to unmount them. fusermount -u mnt returns: fusermount: entry for /home/catskul/foo/mnt not found in /etc/mtab sudo fusermount -u mnt returns: fusermount: failed to unmount /home/catskul/foo/mnt: Device or resource busy sudo fuser -a mnt returns: Cannot stat file /proc/986/fd/55: Permission denied mnt:

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  • DVD ROM is not working

    - by Cyril N.
    (note: I don't know in which StackExchange site to put this question, I'll thank the moderator that will move it to a more appropriate place, if there is a S.E. available for my question). I have a DVD RW drive that is well listed in the bios, and if no CD is in, it is also present in the "My Computer" of my Fedora 16. But when I put a disc on it, the icon disapear from "My Computer", and I can not do anything with this ! (Like erasing a RW disc). I'd like to boot a Fedora 17 Live CD image. I burned it on an other computer but when I try to run it in bios, nothing is done and I'm redirected to Grub of my HD. The command cdrecord -scanbus shows this : wodim: Warning: controller returns wrong size for CD capabilities page. wodim: Cannot get CD capabilities data. 6,1,0 601) 'HD-DT%ST' 'DVD%RAM G@22NP20' '1&04' Removable CD-ROM And when I try to mount manually the disc, I got this error : mount: block device /dev/sr0 is write-protected, mounting read-only mount: /dev/sr0: can't read superblock Here's a paste of dmesg | grep sr0 : [ 5.161265] sr0: scsi-1 drive [ 5.161621] sr 6:0:1:0: Attached scsi CD-ROM sr0 [ 834.545978] sr0: Hmm, seems the drive doesn't support multisession CD's [ 841.731194] sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 [ 842.021640] sr 6:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 842.021652] sr 6:0:1:0: [sr0] Sense Key : Aborted Command [current] [ 842.021662] sr 6:0:1:0: [sr0] Add. Sense: No additional sense information [ 842.021672] sr 6:0:1:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 [ 842.021688] end_request: I/O error, dev sr0, sector 0 [ 842.021697] Buffer I/O error on device sr0, logical block 0 [ 842.023715] sr 6:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 843.048203] sr 6:0:1:0: [sr0] Sense Key : Aborted Command [current] [ 843.048211] sr 6:0:1:0: [sr0] Add. Sense: No additional sense information [ 843.048219] sr 6:0:1:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00 [ 843.048234] end_request: I/O error, dev sr0, sector 0 [ 843.048274] EXT4-fs (sr0): unable to read superblock [ 843.063155] sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 [ 843.075904] sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 [ 843.220512] sr 6:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 843.220522] sr 6:0:1:0: [sr0] Sense Key : Aborted Command [current] [ 843.220530] sr 6:0:1:0: [sr0] Add. Sense: No additional sense information [ 843.220538] sr 6:0:1:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00 [ 843.220553] end_request: I/O error, dev sr0, sector 0 [ 843.220609] FAT-fs (sr0): unable to read boot sector The lines from Sense Key .. (line 6) to DRIVER_SENSE (line 11) are repeating a lot. I then changed my DVD player with an other spare one I had, and the disc didn't boot neither. I then changed the IDE cable, but still no success. What can I do to make it work? Thanks for your help.

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  • Configuring HP Proliant iLO using hponcfg

    - by Abhay Kumar
    I am configuring an iLO using hponcfg by logging into the machine remotely and running hponcfg with scripts Mod_Directory.xml and then with Mod_Network.xml. I am enabling the DHCP on the device. But after the above scripts are executed successfully and upon rebooting the iLO, it shows the IP address to be 0.0.0.0. What is missing here, so that the iLO gets an IP from DHCP automatically after configuration?

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  • What exactly does ssh send when performing key negotiation?

    - by Checkers
    When explicitly specifying identity file to ssh: ssh -i ./id_rsa ... I have these lines in ssh debug trace: debug1: Offering public key: ./id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply Does it mean ssh-generated id_rsa contains public RSA exponent as well, or ssh is sending out my private key? (which, of course, does not make sense). id_rsa format seems to be rather explicit that it contains private key with its "BEGIN PRIVATE KEY" block.

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  • Windows 2008 running as KVM guest networking issue

    - by Evolver
    I have a strange networking problem with Windows 2008 server R2, running as guest under KVM-Qemu host. Host is CentOS 6.3 x86_64. It's network settings: # cat /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 BOOTPROTO=static BROADCAST=xx.xx.xx.63 IPADDR=xx.xx.xx.4 NETMASK=255.255.255.192 NETWORK=xx.xx.xx.0 ONBOOT=yes TYPE=Bridge # cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br0 IPV6INIT=yes IPV6_AUTOCONF=yes # cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=my.hostname GATEWAY=xx.xx.xx.1 # cat /etc/sysctl net.ipv4.ip_forward = 1 # tried to set it to 0 without any changes net.ipv4.conf.default.rp_filter = 1 # tried to set it to 0 without any changes net.ipv4.conf.default.accept_source_route = 0 # tried to set it to 1 without any changes kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface xx.xx.xx.0 0.0.0.0 255.255.255.192 U 0 0 0 br0 169.254.0.0 0.0.0.0 255.255.0.0 U 1004 0 0 br0 0.0.0.0 xx.xx.xx.1 0.0.0.0 UG 0 0 0 br0 Node IP is xx.xx.xx.4, guest IP is xx.xx.xx.24, both host and guest is in the same network (/26). There are several linux guest running fine on the node (centos, debian, ubuntu, arch), and even Windows 2003 x86 also running fine. But Win2008 does not. I wonder, what's the difference. From Win2008 guest I can ping nothing: neither gateway, nor any other IP, even they are in the same subnet. From outside I also cannot ping guest. Almost. If I ping it from another server in same subnet, it's barely pinging, losing more than 90% packets. Firewall on the guest is completely off. Tried to set up network manually as well as via DHCP without success (BTW, DHCP set up network settings correctly). I suspect that is a kind of routing problem, but I spent whole day and still cannot figure it out. I would be appreciate for any help.

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  • How do I correct a directory incorrectly copied into itself?

    - by Peter Boughton
    Given the following situation... <path>/mydir1/mydir2 ...where mydir2 should have overwritten mydir1, but was instead placed inside, and both directories actually have the same filename. How is that fixed? Attempting to do mv <path>/mydir/mydir/* <path>/mydir/ or mv <path>/mydir <path>/ results in: mv: cannot move `<path>/mydir/mydir` to a subdirectory of itself, `<path>/mydir` This seems stupidly simple, but it's late here and I can't figure it out. There are seventeen such directories to fix (path differs for each, but same mydir name). To confirm, the error message can be caused with this: # cd /path/to/directory # mv mydir/mydir ./ mv: cannot move `mydir/mydir' to a subdirectory of itself, `./mydir' Also tried: # mv mydir/mydir/* mydir/ mv: cannot move `mydir/mydir/otherdir1' to a subdirectory of itself, `mydir/otherdir1' mv: cannot move `mydir/mydir/otherdir2' to a subdirectory of itself, `mydir/otherdir2' and... # mv /path/to/directory/mydir/mydir/otherdir1 /path/to/directory/mydir/ mv: cannot move `/path/to/directory/mydir/mydir/otherdir1' to a subdirectory of itself, `/path/to/directory/mydir/otherdir1' and using a temporary directory: # mv mydir/mydir ./mydir-temp # mv mydir-temp/* mydir/ mv: cannot move `mydir-temp/otherdir1' to a subdirectory of itself, `mydir/otherdir1' mv: cannot move `mydir-temp/otherdir2' to a subdirectory of itself, `mydir/otherdir2' I found a similar question "How to recursively move all files (including hidden) in a subfolder into a parent folder in *nix?" which suggested that mv bar/{,.}* . would do this. But this also gives the same errors, as well as confusingly picking up . and .. from somewhere. # cd mydir # mv mydir/{,.}* . mv: cannot move `mydir/otherdir1' to a subdirectory of itself, `./otherdir1' mv: cannot move `mydir/otherdir2' to a subdirectory of itself, `./otherdir2' mv: cannot move `mydir/.' to `./.': Device or resource busy mv: cannot move `mydir/..' to `./..': Device or resource busy mv: overwrite `./.file'? y Another similar question "linux mv command weirdness" suggests that mv doesn't overwrite and a copy is required. # cd mydir # cp -rf ./mydir/* ./ cp: overwrite `./otherdir1/file1'? y cp: overwrite `./otherdir1/file2'? y cp: overwrite `./otherdir1/file3'? This appears to be working... except there's a lot of files (and dirs) - I don't want to confirm every one! Isn't the f there supposed to prevent this? Ok, so cp was aliased to cp -i (which I found out with type cp), and bypassed by using \cp -rf ./mydir/* ./ which seems to have worked. Although I've solved the problem of getting dirs/files from one place to another, I'm still curious as to what's going on with the mv stuff - is this really a deliberate feature as suggested by Warner?

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  • Fix/Bypass "Cannot connect to the real website-blocked" error in Google Chrome with OpenDNS blocking

    - by George H
    I have a large problem with Chrome in my organisation. I use DNS to manage web site blocking, for sites which are not appropriate and are potentially a risk to the organisation where I do this. I only want to use Chrome over the network, as Internet Explorer has compatibility problems with some sites that we use (We cannot change this either or use different sites). Therefore using internet explorer is not a solution. I do not want to install a different browser, for multiple reasons. Mainly because of the difficulty of rewriting the customised add-ons that we use. However, recently, I have had lots of problems with Chrome SSL Errors. I cannot use my custom OpenDNS block pages, which uses the contact form to request an unblocking. Chrome often blocks OpenDNS for sites (a good example is Facebook) that request HTTPS. Some sites like https://internetbadguys.com (OpenDNS example) This means that chrome refuses to load the blocking page, explaining that the site is blocked. Instead they often call IT support, but they want a solution, as they are sick of getting lots of SSL errors. I have tried looking into ways to turning this off. I have tried: Typing "proceed". That didn't work. Typing "proceed", pressing enter. Didn't work I cannot find phishing and anti-malware any more in Chrome, from the internet guides. Not using HTTPS. However there is an automatic redirect to HTTPS on most sites. Therefore the error keeps coming up. Checking my clocks. They were correct. Does anyone have an idea on how to disabling, bypassing or working around this "feature"? EDIT: This is an example what I am talking about - I found that on google images. I do not block google. EDIT 2: My clocks are correct. I cannot stop using OpenDNS either. EDIT 3: My question is: How do I stop chrome from refusing to load pages that are blocked by OpenDNS, where the server has explicitly requested HTTPS.

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  • Windows 7 - wireless connection sharing

    - by Chris Ballance
    I am trying to share my mobile broadband internet connection with other machines via wifi and am running windows 7. Users are able to connect to my machine, but not able to obtain an internet connection once they connect to me. Any ideas would be very helpful. Does Windows firewall block this?

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  • Is exFAT safe to unplug without unmounting first?

    - by romkyns
    I'm hitting the 4GB limit of FAT32 on USB drives more and more often. However, being able to unplug the device without unmounting it first is a must have for me. I've noticed exFAT recently, however I couldn't find any info on whether drives formatted with exFAT can be unplugged safely without unmounting. Can they?

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