Search Results

Search found 27800 results on 1112 pages for 'state machine'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 128/1112 | < Previous Page | 124 125 126 127 128 129 130 131 132 133 134 135  | Next Page >

  • HTG Explains: Why Does Rebooting a Computer Fix So Many Problems?

    - by Chris Hoffman
    Ask a geek how to fix a problem you’ve having with your Windows computer and they’ll likely ask “Have you tried rebooting it?” This seems like a flippant response, but rebooting a computer can actually solve many problems. So what’s going on here? Why does resetting a device or restarting a program fix so many problems? And why don’t geeks try to identify and fix problems rather than use the blunt hammer of “reset it”? This Isn’t Just About Windows Bear in mind that this soltion isn’t just limited to Windows computers, but applies to all types of computing devices. You’ll find the advice “try resetting it” applied to wireless routers, iPads, Android phones, and more. This same advice even applies to software — is Firefox acting slow and consuming a lot of memory? Try closing it and reopening it! Some Problems Require a Restart To illustrate why rebooting can fix so many problems, let’s take a look at the ultimate software problem a Windows computer can face: Windows halts, showing a blue screen of death. The blue screen was caused by a low-level error, likely a problem with a hardware driver or a hardware malfunction. Windows reaches a state where it doesn’t know how to recover, so it halts, shows a blue-screen of death, gathers information about the problem, and automatically restarts the computer for you . This restart fixes the blue screen of death. Windows has gotten better at dealing with errors — for example, if your graphics driver crashes, Windows XP would have frozen. In Windows Vista and newer versions of Windows, the Windows desktop will lose its fancy graphical effects for a few moments before regaining them. Behind the scenes, Windows is restarting the malfunctioning graphics driver. But why doesn’t Windows simply fix the problem rather than restarting the driver or the computer itself?  Well, because it can’t — the code has encountered a problem and stopped working completely, so there’s no way for it to continue. By restarting, the code can start from square one and hopefully it won’t encounter the same problem again. Examples of Restarting Fixing Problems While certain problems require a complete restart because the operating system or a hardware driver has stopped working, not every problem does. Some problems may be fixable without a restart, though a restart may be the easiest option. Windows is Slow: Let’s say Windows is running very slowly. It’s possible that a misbehaving program is using 99% CPU and draining the computer’s resources. A geek could head to the task manager and look around, hoping to locate the misbehaving process an end it. If an average user encountered this same problem, they could simply reboot their computer to fix it rather than dig through their running processes. Firefox or Another Program is Using Too Much Memory: In the past, Firefox has been the poster child for memory leaks on average PCs. Over time, Firefox would often consume more and more memory, getting larger and larger and slowing down. Closing Firefox will cause it to relinquish all of its memory. When it starts again, it will start from a clean state without any leaked memory. This doesn’t just apply to Firefox, but applies to any software with memory leaks. Internet or Wi-Fi Network Problems: If you have a problem with your Wi-Fi or Internet connection, the software on your router or modem may have encountered a problem. Resetting the router — just by unplugging it from its power socket and then plugging it back in — is a common solution for connection problems. In all cases, a restart wipes away the current state of the software . Any code that’s stuck in a misbehaving state will be swept away, too. When you restart, the computer or device will bring the system up from scratch, restarting all the software from square one so it will work just as well as it was working before. “Soft Resets” vs. “Hard Resets” In the mobile device world, there are two types of “resets” you can perform. A “soft reset” is simply restarting a device normally — turning it off and then on again. A “hard reset” is resetting its software state back to its factory default state. When you think about it, both types of resets fix problems for a similar reason. For example, let’s say your Windows computer refuses to boot or becomes completely infected with malware. Simply restarting the computer won’t fix the problem, as the problem is with the files on the computer’s hard drive — it has corrupted files or malware that loads at startup on its hard drive. However, reinstalling Windows (performing a “Refresh or Reset your PC” operation in Windows 8 terms) will wipe away everything on the computer’s hard drive, restoring it to its formerly clean state. This is simpler than looking through the computer’s hard drive, trying to identify the exact reason for the problems or trying to ensure you’ve obliterated every last trace of malware. It’s much faster to simply start over from a known-good, clean state instead of trying to locate every possible problem and fix it. Ultimately, the answer is that “resetting a computer wipes away the current state of the software, including any problems that have developed, and allows it to start over from square one.” It’s easier and faster to start from a clean state than identify and fix any problems that may be occurring — in fact, in some cases, it may be impossible to fix problems without beginning from that clean state. Image Credit: Arria Belli on Flickr, DeclanTM on Flickr     

    Read the article

  • debian lenny xen bridge networking problem

    - by Sasha
    DomU isn't talking to the world, but it talks to Dom0. Here are the tests that I made: Dom0 (external networking is working): ping 188.40.96.238 #Which is Domu's ip PING 188.40.96.238 (188.40.96.238) 56(84) bytes of data. 64 bytes from 188.40.96.238: icmp_seq=1 ttl=64 time=0.092 ms DomU: ping 188.40.96.215 #Which is Dom0's ip PING 188.40.96.215 (188.40.96.215) 56(84) bytes of data. 64 bytes from 188.40.96.215: icmp_seq=1 ttl=64 time=0.045 ms ping 188.40.96.193 #Which is the gateway - fail PING 188.40.96.193 (188.40.96.193) 56(84) bytes of data. ^C --- 188.40.96.193 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1013ms The system is debian lenny with a normal setup. Here is my configs: uname -a Linux green0 2.6.26-2-xen-686 #1 SMP Wed Aug 19 08:47:57 UTC 2009 i686 GNU/Linux cat /etc/xen/green1.cfg |grep -v '#' kernel = '/boot/vmlinuz-2.6.26-2-xen-686' ramdisk = '/boot/initrd.img-2.6.26-2-xen-686' memory = '2000' root = '/dev/xvda2 ro' disk = [ 'file:/home/xen/domains/green1/swap.img,xvda1,w', 'file:/home/xen/domains/green1/disk.img,xvda2,w', ] name = 'green1' vif = [ 'ip=188.40.96.238,mac=00:16:3E:1F:C4:CC' ] on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' ifconfig eth0 Link encap:Ethernet HWaddr 00:24:21:ef:2f:86 inet addr:188.40.96.215 Bcast:188.40.96.255 Mask:255.255.255.192 inet6 addr: fe80::224:21ff:feef:2f86/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3296 errors:0 dropped:0 overruns:0 frame:0 TX packets:2204 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:262717 (256.5 KiB) TX bytes:330465 (322.7 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) peth0 Link encap:Ethernet HWaddr 00:24:21:ef:2f:86 inet6 addr: fe80::224:21ff:feef:2f86/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:3407 errors:0 dropped:657431448 overruns:0 frame:0 TX packets:2291 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:319941 (312.4 KiB) TX bytes:338423 (330.4 KiB) Interrupt:16 Base address:0x8000 vif2.0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:27 errors:0 dropped:0 overruns:0 frame:0 TX packets:151 errors:0 dropped:33 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:1164 (1.1 KiB) TX bytes:20974 (20.4 KiB) ip a s 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: peth0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:24:21:ef:2f:86 brd ff:ff:ff:ff:ff:ff inet6 fe80::224:21ff:feef:2f86/64 scope link valid_lft forever preferred_lft forever 4: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 5: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 6: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 7: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 8: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 9: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 10: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 11: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 12: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:24:21:ef:2f:86 brd ff:ff:ff:ff:ff:ff inet 188.40.96.215/26 brd 188.40.96.255 scope global eth0 inet6 fe80::224:21ff:feef:2f86/64 scope link valid_lft forever preferred_lft forever 14: vif2.0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 32 link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff inet6 fe80::fcff:ffff:feff:ffff/64 scope link valid_lft forever preferred_lft forever brctl show bridge name bridge id STP enabled interfaces eth0 8000.002421ef2f86 no peth0 vif2.0 ip r l Dom0: 188.40.96.192/26 dev eth0 proto kernel scope link src 188.40.96.215 default via 188.40.96.193 dev eth0 DomU: 188.40.96.192/26 dev eth0 proto kernel scope link src 188.40.96.238 default via 188.40.96.193 dev eth0

    Read the article

  • How can I use Linksys WPSM54G print server as a bridge for another machine AND also share the printe

    - by user26453
    I have a Linksys WPMS54G currently sharing a printer via the USB port with the rest of my network via the wireless. Is there any way to set it up so that the ethernet port is bridged over the wireless adapter portion? i.e., be able to uplink another machine or switch into the network via the WPMS54G's ethernet port? Update: The network architecture is as follows: (1) Linksys WRT54G router that serves as a router, DHCP server, and wireless access point for the network. Fairly standard configuration (3) Laptops that are used throughout the house via wifi (1) Linksys WPSM54G printer server that connects via wireless to the router, in a separate room with a printer attached to print seerver's USB port along with (1) Un-networked desktop in the same room Since the printer is plugged into the USB port of the WPSM54G, I am wondering if I can connect the desktop to the ethernet port of the WPSM54G and have it bridged over the wifi to the router. The twist here is that the ethernet is initially used to connect the wireless print server to the router (for configuration, can't configure it wirelessly if you are initially on a encrypted network). Now instead of using that ethernet port as a way to connect the print server to the network (via the router), I want to use the ethernet port as a way to connect another computer to the network, in effect bridging into the router via the print server, while still sharing the printer (attached via USB) through the print server. If this is not clear, please comment. To be clear, the computer I want to connect/bridge into the network does not have a wireless card, is far from the router, and I do not want to lay ethernet cable to connect it. While I could certainly buy a legitimate wireless bridge to accomplish this, I figured since the print server already has an ethernet port, see if I can't use that.

    Read the article

  • PortForwarding to IIS in Linux

    - by Simon
    Hi, I am trying to set up port forwarding on a linux box to a IIS webserver on my internal network. The web server sits on Windows 2003 Server. My linux box has eth0 - Internet connection eth1 - internal subnet (10.10.10.x) eth2 - 2nd internal subnet (129.168.0.x) dhcp interface my webserver is on the eth2 interface (192.168.0.6) I am doing port forwarding for port 80 with no avail. I use the same set of rules to port forward to a different webserver and it works. The webapplication is available on the internal network but not for external users. iptables -t nat -A PREROUTING -p tcp -i eth0 -d $PUBLIC_IP --dport 80 -j DNAT --to 192.168.0.6:80 iptables -A FORWARD -p tcp -i eth0 -o eth2 -d 192.168.0.6 --dport 80 -m state --state NEW -j ACCEPT iptables -A FORWARD -t filter -o eth0 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -t filter -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE Any Ideas?

    Read the article

  • Gre Tunnel Cisco Linux traffic forwarding

    - by mezgani
    I setup a gre tunnel a cisco router and a Linux machine, the tunnel interface in the Linux box named pic. Well i have to forward traffic coming from cisco through the Linux box. the rules i've set in the Linux box is described as follow: echo "1" /proc/sys/net/ipv4/ip_forward iptables -A INPUT -p 47 -j ACCEPT iptables -A FORWARD -i ppp0 -j ACCEPT iptables -A FORWARD -i pic -o ppp0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -i ppp0 -o pic -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE I see the traffic coming from tunnel and forwarded to internet but no reply from sent packet. May i miss something like a routing rule.

    Read the article

  • What are the advantages and disadvantages of the various virtual machine image formats?

    - by Matt
    Xen and Virtualbox etc both support a range of different virtual machine image formats. These are: vmdk, vdi, qcow & qcow2, hdd & vhd. Without any bias toward a particular product, I'm wanting to know what are the advantages and disadvantages of the various formats both from a features perspective, robustness and speed? One piece of info I discovered in a forum post was this: "The major difference is that VDI uses relatively large blocks (1MB) when growing an image, and thus has less overhead for block pointers etc. but isn't ultimately space efficient in the sense that if a single byte is non-zero in such a 1MB block the entire space is used. VMDK in contrast uses 64K blocks, and thus has more management overhead and generally a bit less disk space consumption What offsets this is that VDI is more efficient when it comes to snapshots." You might be thinking, I want to know this because I want to know which format to choose? Not exactly, I'm developing some software which utilises these formats and want to support one or more of them. Simplicity, large disks and ease of development are my main drivers.

    Read the article

  • Problem linking two Cisco routers with a static route

    - by Chris Kaczor
    I'm trying to link two Cisco routers with a static route and I haven't been able to get it working as expected. Here is the basic setup: Router 1 - WRV210 - 192.168.1.1 - connected to cable modem Router 2 - RV120W - 192.168.2.1 I already have several machines on Router 1 that are working and I want to setup Router 2 with a few other machines on the different subnet. Here is what I've configured: Connected the WAN port on Router 2 to a LAN port on Router 1 Configured Router 1 to give 192.168.1.2 to Router 2 via DHCP Configured Router 1 with a static route (192.168.2.0 mask 255.255.255.0) to 192.168.1.2 using the LAN & Wireless interface Disabled the firewall on Router 2 (since it is covered by Router 1) Configured Router 2 to "Router" mode instead of "NAT" mode Configured Router 2 with a static route (192.168.1.0 mask 255.255.255.0) to 192.168.1.1 using the WAN interface From the research I've done I think that should be enough but things aren't working exactly as expected: Router 2 can ping 192.168.1.1 and 192.168.1.101 (a machine on router 1) A machine on Router 2 can ping 192.168.1.1 and 192.168.1.101 (a machine on router 1) ping 192.168.1.1 and 192.168.1.101 (a machine on router 1) Router 1 can NOT ping 192.168.2.1 or 192.168.2.101 (a machine on router 2) A machine on Router 1 can NOT ping 192.168.2.1 or 192.168.2.101 (a machine on router 2) can NOT ping 192.168.2.1 or 192.168.2.101 (a machine on router 2) Router 1 and a machine on Router 1 can ping 192.168.1.2 (Router 2 itself) I'm confused as to why Router 1 cannot talk to the 192.168.2.0/255.255.255.0 subnet. Any help would be greatly appreciated.

    Read the article

  • With WebMatrix, How do I Connect to a MySQL Database on a Colleague's Machine?

    - by Ash Clarke
    I have scoured Google trying to discover how to do this, but essentially I want to connect to a colleague's MySQL database for working together on a Wordpress installation. I am having no luck and keep getting an error about the connection not being possible: Unable to connect to any of the specified MySQL hosts. MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts. at MySql.Data.MySqlClient.NativeDriver.Open() at MySql.Data.MySqlClient.Driver.Open() at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings) at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection() at MySql.Data.MySqlClient.MySqlPool.TryToGetDriver() at MySql.Data.MySqlClient.MySqlPool.GetConnection() at MySql.Data.MySqlClient.MySqlConnection.Open() at Microsoft.WebMatrix.DatabaseManager.MySqlDatabase.MySqlDatabaseProvider.TestConnection(String connectionString) at Microsoft.WebMatrix.DatabaseManager.IisDbManagerModuleService.TestConnection(DatabaseConnection databaseConnection, String configPathState) at Microsoft.WebMatrix.DatabaseManager.Client.ClientConnection.Test(ManagementConfigurationPath configPath) at Microsoft.WebMatrix.DatabaseManager.Client.DatabaseHierarchyInfo.EnsureLoaded() The connection details are copied from my colleague's connection string, with the exception of the server being modified to match the IP address of his machine. I'm not sure if there is a firewall port I have to open or a configuration file I have to modify, but I'm not having much luck so far. (There is a strong chance that, by default, web matrix / iis express doesn't set the mysql database it creates to accept remote connections. If anyone knows how to change this, that would be grand!) Anyone have any ideas?

    Read the article

  • Copy a harddrive from a failed desktop machine using a second working one. [closed]

    - by MrEyes
    Heres the scenario: I have PC-A, an old PC that runs Windows XP but now refuses to boot due to a failed motherboard (or maybe PSU). This PC has a single 80gb IDE drive. I also have PC-B, running Windows Vista, this is working fine. I want to copy all the data off PC-As HDD onto PC-B. To do this I have taken the HDD out of PC-A and connected it as a slave to PC-B. PC-B now boots and sees the additional drive. However, when I attempt to access/copy user folders (i.e. Documents and Settings/[username]/*) I am told that I cannot access the folders due to user permissions. I am doing this under an adminstrator account on PC-B. So the question is, how can I "backup" the data? Preferably without making any changes to the drive contents. The reason for this is that it is possible that PC-A is failing due to a bad PSU, so I intend to replace it before writing off the machine. However I would feel much happier if I had a backup of the data on the HDD.

    Read the article

  • What's the state of the art in image upscaling?

    - by monov
    I like to collect cool pics and use them as wallpapers or for other things. Often, artists publish only low-res versions, probably for fear of theft. Example: Gabriel Pulecio's BIRDS Now, if I want to use that as a wallpaper, I'd have to upscale it, and obviously that'd make it look blurry because of the bicubic interpolation. I realize there's no real way to get a high-res version from a low-res pic, because the information is not simply there. That said, I'm wondering if heuristics have been developed for upscaling with less apparent loss of quality. Those would probably be optimized for specific image types. For photorealistic pictures, for cartoons with large flat areas, for pixel art... One algorithm I'm aware of is Seam Carving. It works for some kinds of pics, especially ones with a plain, undetailed or uninteresting background, and a subject that strongly stands out. But it's far from being general-purpose. Applying it to the above pic produces this. It looks quite sharp, but the proportions are horribly distorted because the algorithm is not designed for this kind of pic. Another is Pixel art scaling algorithms. Those are completely unfit for anything other than actual pixel art that's pixelized to begin with. For example, I tried the scale2x windows binary on my pic, but its output was nearly indistinguishable from nearest-neighbour scaling because the algorithm didn't detect any isolated pixely fragments to work from. Something else I tried was: I enlarged the image in Photoshop with bicubic interpolation, then I applied unsharp mask. The result looks pretty bad. The red blotch is actually resized reasonably well, but the dove is far from it. What I'm looking for is some app that makes a best-effort attempt at upscaling any input image while minimizing blurriness. If you know of any, I'll be thankful. Note that the subjective prettiness and sharpness of the result is what matters... the result doesn't need to be completely faithful to the original small image.

    Read the article

  • How to drop all subnets outside of the US using iptables

    - by Jim
    I want to block all subnets outside the US. I've made a script that has all of the US subnets in it. I want to disallow or DROP all but my list. Can someone give me an example of how I can start by denying everything? This is the output from -L Chain INPUT (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT tcp -- anywhere anywhere tcp dpt:ftp state NEW DROP icmp -- anywhere anywhere Chain FORWARD (policy DROP) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination And these are the rules iptables --F iptables --policy INPUT DROP iptables --policy FORWARD DROP iptables --policy OUTPUT ACCEPT iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p tcp -i eth0 --dport 21 -m state --state NEW -j ACCEPT iptables -A INPUT -p icmp -j DROP Just for clarity, with these rules, I can still connect to port 21 without my subnet list. I want to block ALL subnets and just open those inside the US.

    Read the article

  • ssh over a tunnel in order to configure auto login

    - by Vihaan Verma
    I m trying to copy the id_rsa.pub key to the server. The server in my case also has a virutal machine called dev which runs on the host machine. I copied the id_rsa.pub key to the host for auto log in using this command. ssh-copy-id -i ~/.ssh/id_rsa.pub vickey@host which worked fine and I can auto log in to host. I also wanted to auto log in to the dev machine. I know I can just copy the contents of authorized_keys from the host machine to the dev machine but I m looking for a command line of doing things. Creating a tunnel seemed like the solution ssh vickey@host -L 2000:dev:22 -N now when I tried ssh-copy-id -i ~/.ssh/id_rsa.pub vickey@localhost -P 2000 the password that worked here was of my local machine , I expected it to ask me password of my dev machine. The above command adds the pub key to the local machine and not to the dev machine. However this commands asks me for the dev password and copies the files. scp -P 2000 vickey@localhost:/home/vickey/trash/vim . vickey@localhost's password: vim 100% 111 0.1KB/s 00:00 How do I do the same with ssh-copy-id ?

    Read the article

  • Restoring the exact state of a linux install to a different laptop with different sized drives and other hardware

    - by user259774
    I have an IBM running a Manjaro install that has already been used and settled into, with packages installed, browser profiles, etc, etc. The drive is 60gb, and it has a swap partition and an ext4 root partition. I need to move this profile to a Toshiba computer with a 320gb drive. How should I go about this? My inclination would be to shut down the toshiba, boot a live linux system, dd the whole 60gb drive to a file, boot the toshiba to a live system, then dd the file to its 320gb drive. Would this work? I know that it wouldn't with windows, but I believe this is an artificially imposed limitation from Microsoft. Is this correct, or is Linux similarly limited? If not, how could I go about this? Would clonezilla work, or would the hardware disparities prevent it from working?

    Read the article

  • Can I tell if crashplan has backed up a particular file in a particular state?

    - by Chris Cogdon
    I would like to be able to tell, programmatically, if CrashPlan has backed-up a particular file, including the current updates to that file. I.e., that the current contents of a file are backed up. It's relatively easy to tell when CrashPlan last backed up a file: its file name appears in /usr/local/crashplan/log/backup_files.log.0, and with some accuracy, I could compare the backup time with the last modification time to the file, but that method appears to be somewhat dubious. A couple of methods I could think of, but I don't know how: Compare the current file to CrashPlan's metadata about that file. This needs knowledge about the format of CrashPlan's "cache" files as well as the hashing system used. This might be achievable through the CLI, but the CLI is just a portal into the GUI, and I need something that's scriptable. Restore the file to a temporary directory, and compare it. Unfortunately, there is no CLI to do restores; the GUI is the only way. I'll describe what I'm trying to achieve. It would be nice to know how to do the above, even if there are alternative methods for the following: I'm using CrashPlan for continuous backups to my PostgreSQL database, using WAL archives. In the current configuration, the archive command copies the files to an archive directory, which is backed up by CrashPlan. Every so often I manually confirm (or just trust) a group of WALs are backed up, and remove them from the archive directory, and occasionally do a restore through the GUI to ensure I can retrieve current and "deleted" WALs. The xlog directory is backed-up, too, so I have a good chance of doing a near-full restore even if a particular xlog hasn't been archived by PostgreSQL yet. I'd like to be able to automate this process, which necessitates either confirming the backup status and recency, or automating a restore for comparison purposes. (As a bonus, if the method is trustworthy, I could turn the "archive_command" from "copy to archive directory" into "confirm CrashPlan has backed up the current version", and do away with the archive directory completely). (And, yes, I'm doing regular pg_dumpall's, in addition to the above.)

    Read the article

  • Is it a good idea to have the operating system on a solid state drive?

    - by Kenji Kina
    There is something I don't quite understand. I know a SSD helps with OS load times, but I'm not sure if all this boost is only noticeable/interesting when booting, or gives an all around considerably better experience thereafter. I am interested in having a quick and responsive environment after booting, which leads me to think that it'd be better to spend the SSD capacity in my most used apps (and the page file? Another inside question) and not the OS itself. This, of course, means that I don't know just how much the OS reads/writes its files during normal usage. So, how good an idea is it to dump the whole 20GB+ of Windows 7 OS into the SSD (considering the hefty price per GB of SSD capacity) if I can put up with the usual hard disk boot times? Would I be missing on a lot if I didn't?

    Read the article

  • How to best convert a fully encrypted drive into a Virtual Machine?

    - by SiegeX
    I have a Windows XP laptop that uses GuardianEdge's Encryption Plus to fully encrypt the drive from bootup. What I would like to do is install a much larger (unencrypted) hard drive with Windows 7 on it and turn this fully encrypted drive into a Virtual Machine that can be ran in either Virtualbox or VMWare on the Windows 7 host. I've read many howto's that talk about using an imaging tool like Acronis True Image to image the drive then passing that through VMWare's VCenter Converter to turn it into a format that VMWare can understand. Unfortunately this seems to all far apart when you are dealing with a fully encrypted drive because Acronis cannot recognize the file system and attempts to do a sector-by-sector copy of the entire hard drive. This is extremely wasteful since the drive is 120GB but the file system is only using 10GB of that. Even if I were OK with going with an inefficient 120GB sector-by-sector copy, I'm not sure that this would even work under VMWare or Virtualbox. Unfortunately, the Guardian Edge boot-time login comes up only after the hard drive has been selected as the boot device; preventing me from being able to decrypt the drive prior to booting an Acronis True Image CD so that it can recognize the underlying file system. I'm sure I'm not the first person to want to do this but I am having a heck of a time finding solutions to this problem. All suggested/answers welcomed. Thanks

    Read the article

  • Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most

    - by Henno
    Problem Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most. Topology Facts ESXi5 version is 5.0.0.504890 VM has the latest Vmware Tools installed VM is using E1000 network driver Physical box has Win Srv 2008 R2 as the OS CrystalDiskMark says the drive on physical box can read/write 100MB/s vCenter is another vm on esx both vm and physical box are showing 1Gbps link speed Configuration Networking shows vmnic0 as 1000 Full NTttcp is a client/server tool from Microsoft for measuring pure network throughput Here's what I've done so far: Test1: VM is running Filezilla FTP Server (default settings, one user account made) Physical box is running Filezilla FTP Client (default settings) Physical box is uploading a big file to FTP server Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Physical box is downloading that file from FTP server Transfer speed (as observed by Windows Task Manager on both machines): still ~11MB/s (bad) Could it be disk performance issue? Test2: Physical box is running ntttcpr.exe -a 6 -m 6,0,VM_IP_ADDRESS VM is running ntttcps.exe -a 6 -m 6,0,PHY_BOX_IP_ADDRESS Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Could it be switch performance issue? Test3: physical box is running vSphere Client I open Summary Storage datastore Browse Datastore... from physical box and upload a file to datastore Transfer speed (as observed by Windows Task Manager on physical box): ~26-36MB/s (good) Could it be a vm specific issue? Test4: Installed ntttcp to another vm on the same esx server Measured network performance between vms on the same esx server with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~90-120MB/s (excellent :) Test5: I have another esx server on the same site, connecting to the same datastore and same switch. Those two ESX servers have both 2 NICs. One NIC goes to switch while the other goes directly to the other ESX server. vMotioned one of the testing vms off to the other ESX host Measured network performance between vms on different esx servers with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~11MB/s (bad) While I'm aware of these: ESXi 4.1 slow file transfer ESXi 5 network performance is slow Debian Etch and ESXi slow network speeds VMWare ESXi slow file copy to guest they did not help (or I must have been missed something)

    Read the article

  • Can't install mysql 5.1 on a windows machine because the last install left artifacts.

    - by Zombies
    After uninstalling mysql 5.1 (64 bit version) I cannot install the win32 version! Apparently the devs felt it neccasery to leave helpful artifacts behind? I have rebooted my machine but no effect.. Running this: C:\Users\User1>net start mysql The MySQL service is starting. The MySQL service could not be started. A system error has occurred. System error 1067 has occurred. The process terminated unexpectedly. And ran this: C:\Program Files (x86)\MySQL\MySQL Server 5.1\bin>mysqld --console 100213 10:52:58 [Note] Plugin 'FEDERATED' is disabled. InnoDB: Error: log file .\ib_logfile0 is of different size 0 10485760 bytes InnoDB: than specified in the .cnf file 0 25165824 bytes! 100213 10:52:59 [ERROR] Plugin 'InnoDB' init function returned error. 100213 10:52:59 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 100213 10:52:59 [ERROR] Unknown/unsupported table type: INNODB 100213 10:52:59 [ERROR] Aborting 100213 10:52:59 [Note] mysqld: Shutdown complete Update: For some reason it looks like it is installing the 32bit DB into the old 64bit directoy.... will look into this... (the bin directory is going into the 32 bit program files directory).

    Read the article

  • What is the state of ext3 support in Mac OS X 10.6? [closed]

    - by gzuki
    Possible Duplicate: Mount ext2/ext3 in Mac OS X Snow Leopard I have a 1tb hard drive, I want it to have one partition that can serve as an interchange between linux (ubuntu) and mac (snow leopard). HFS+ scares me a bit, and I can't seem to get a clear picture on whether or not something like fuse can reliably write ext3 partitions in mac. Any good advice on this topic? Should I just pick HFS+ or ext3 and hope for the best (or just deal with only getting read-only on one OS)?

    Read the article

  • How do I trouble shoot a program which regularlly falls into a not responding state?

    - by Dave
    Lately I've been using Visual Studio 2008 and about once a day, sometimes more it will lock up. What advanced techniques can I use to determine what is causing the problem? I believe that it's one of the plug-ins I'm using *cough*Resharper*cough* but I'd like to be sure. I've been losing work and I'd like to file a bug report somewhere but I'm not seeing anything in any of my event logs which looks suspect to me. Working on a Windows XP box.

    Read the article

  • Clarification On Write-Caching Policy, Its Underlying Options And How It Applies To Hard Drives And Solid-State Drives

    - by Boris_yo
    In last week after doing more research on subject matter, I have been wondering about what I have been neglecting all those years to understand write-caching policy, always leaving it on default setting. Write-caching policy improves writing performance and consists of write-back caching and write-cache buffer flushing. This is how I understand all the above, but correct me if I erred somewhere: Write-through cache / Write-through caching itself is not a part of write caching policy per se and it's when data is written to both cache and storage device so if Windows will need that data later again, it is retrieved from cache and not from storage device which means only improved read performance as there is no need for waiting for storage device to read required data again. Since data is still written to storage device, write performance isn't improved and represents no risk of data loss or corruption in case of power failure or system crash while only data in cache gets lost. This option seems to be enabled by default and is recommended for removable devices with no need to use function of "Safely Remove Hardware" on user's part. Write-back caching is similar to above but without writing data to storage device, periodically releasing data from cache and writing to storage device when it is idle. In my opinion this option improves both read and write performance but represents risk if power failure or system crash occurs with the outcome of not only losing data eventually to be written to storage device, but causing file inconsistencies or corrupted file system. Write-back caching cannot be enabled together with write-through caching and it is not recommended to be enabled if no backup power supply is availabe. Write-cache buffer flushing I reckon is similar to write-back caching but enables immediate release and writing of data from cache to storage device right before power outage occurs but I don't know if it applies also to occasional system crash. This option seem to be complementary to write-back cache reducing or potentially eliminating risk of data loss or corruption of file system. I have questions about relevance of last 2 options to today's modern SSDs in order to get best performance and with less wear on SSDs: I know that traditional hard drives come with onboard cache (I wonder what type of cache that is), but do SSDs also come with cache? Assuming they do, is this cache faster than their NAND flash and system RAM and worth taking the risk of utilizing it by enabling write-back cache? I read somewhere that generally storage device's cache is faster than RAM, but I want to be sure. Additionally I read that write-caching should be enabled since current data that is to be written later to NAND flash is kept for a while in cache and provided there is data that gets modified a lot before finally being written, holding of this data and its periodic release reduces its write times to SSD thereby reducing its wearing. Now regarding to write-cache buffer flushing, I heard that SSD controllers are so fast by themselves that enabling this option is not required, because they manage flushing. However, once again, I don't know if SSDs have their own onboard cache and whether or not it is faster than their NAND flash and system RAM because if it is, keeping this option enabled would make sense. Recently I have posted question about issue with my Intel 330 SSD 120GB which was main reason to do deeper research having suspicion of write-caching policy being the culprit of SSD's freezing issue assuming data being released is what causes freezes. Currently I have write-cache enabled and write-cache buffer flushing disabled because I believe SSD controller's management of write-cache flushing and Windows write-cache buffer flushing are conflicting with each other: Since I want to troubleshoot in small steps to finally determine the source of issue, I have decided to start with write-caching policy and the move to drivers, switching to AHCI later on and finally disabling DIPM (device initiated power management) through registry modification thanks to @TomWijsman

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 124 125 126 127 128 129 130 131 132 133 134 135  | Next Page >