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• App-V Problems After SCCM 2007 SP2 Upgrade

  - by GAThrawn

  We're running an SCCM (MS System Centre Config Manager, successor to SMS) 2007 environment and delivering a number of applications to clients virtualized using App-V 4.5.1. The App-V apps are delivered by SCCM in Download-and-Execute, not streaming mode. The SCCM environment was recently service packed to SCCM 2007 SP2 (amongst other things this gives Win7 support). We also pushed out the updated SCCM clients to our workstations. This seems to have broken file associations for virtual apps for a large number of our users. The users can still open their App-V apps by finding the specific app on their Start Menu and clicking it's icon, but double-clicking an associated file in Explorer, or opening an email attachment gives the "This action is only valid for installed applications" error. There is a Technet blog entry from the App-V team talking about this issue "Upgrade to ConfigMgr 2007 SP2 may break App-V File Type Associations" but running the script there comes back saying "The User Interface option has been updated" but hasn't seemed to fix the problems for any of our users. Unfortunately the Technet blogs don't seem to have comments switched on so you can't see how this has worked out for other people. Anyone else had this problem, have you found any other way to fix it?

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• SCCM 2012 Clients no longer detecting

  - by user3685428

  Here is the scenario I had a fully functioning SCCM 2012 site server with the DP, MP, SUP, Application catalog, etc. roles configured and working. There is only one server on this site. Everything was great but i was not happy with SUP, so i decided to create a separate WSUS server and configure Windows Updates through GPOs. That setup worked great as well so i went ahead and removed the SUP role from SCCM and removed the WSUS feature from my SCCM server (they were configured on the same SCCM Server). I did not notice any problems right away. A couple days later i noticed that the OSD deployments were giving errors, and after a couple hours of trying suggestions from Google, i was able to uninstall PXE and make a few changes and reinstall with WDS to get it working again. Again, thought everything was fine and continued on. The last couple days i have noticed that any new machine deployed or installing the Client will show in the SCCM console as "No" Client. The client machines will show connected to a site but the software center shows "IT Organization" instead of our site like the previous clients. The existing clients all seem to be functioning normally. they still receive application distributions and configuration baselines, etc. Reinstalling, uninstalling and reinstalling, repairing does not fix the problems and this happens on all new clients. ClientLocation.log shows it connecting to the correct MP. Nothing odd in any of the logs except for the ClientMessaging.log which repeats continuously this line: <![LOG[Raising event: instance of CCM_CcmHttp_Status { ClientID = "GUID:0450fde3-ab82-41bf-9c33-87a18113744b"; DateTime = "20140528214824.993000+000"; HostName = "SOUNDWAVE.domain.org"; HRESULT = "0x00000000"; ProcessID = 4092; StatusCode = 0; ThreadID = 3720; }; ]LOG]!><time="16:48:24.994+300" date="05-28-2014" component="CcmMessaging" context="" type="1" thread="3720" file="event.cpp:706"> thanks

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• Is it worthwhile to block malicious crawlers via iptables?

  - by EarthMind

  I periodically check my server logs and I notice a lot of crawlers search for the location of phpmyadmin, zencart, roundcube, administrator sections and other sensitive data. Then there are also crawlers under the name "Morfeus Fucking Scanner" or "Morfeus Strikes Again" searching for vulnerabilities in my PHP scripts and crawlers that perform strange (XSS?) GET requests such as: GET /static/)self.html(selector?jQuery( GET /static/]||!jQuery.support.htmlSerialize&&[1, GET /static/);display=elem.css( GET /static/.*. GET /static/);jQuery.removeData(elem, Until now I've always been storing these IPs manually to block them using iptables. But as these requests are only performed a maximum number of times from the same IP, I'm having my doubts if it does provide any advantage security related by blocking them. I'd like to know if it does anyone any good to block these crawlers in the firewall, and if so if there's a (not too complex) way of doing this automatically. And if it's wasted effort, maybe because these requests come from from new IPs after a while, if anyone can elaborate on this and maybe provide suggestion for more efficient ways of denying/restricting malicious crawler access. FYI: I'm also already blocking w00tw00t.at.ISC.SANS.DFind:) crawls using these instructions: http://spamcleaner.org/en/misc/w00tw00t.html

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• How to use different scaling for every monitor?

  - by Mikael Koskinen

  One of the new features in Windows 8.1 is the new "Desktop display scaling", which allows user to configure scaling per monitor. I've been trying to get this working in preview but with no success. If I configure the scaling, it always affects all of my monitors. I have two monitors, the main one with a higher resolution and the secondary with "normal" resolution. The secondary monitor is used in portrait mode. I would like to configure the main monitor's scaling as the text is currently too small. Here's how things look at the configuration screen by default: Now if I adjust the scaling, click apply and do relogin, everything is bigger. On both of my monitors. I haven't clicked the "Let me choose one scaling level for all my displays", but still the slider seems to affect both of them. If I check the "Let me choose one scaling level", the UI changes to look similar to what we have in Windows 8: Still the problem persists. The scaling is applied to both of my monitors. So, it doesn't matter if I check the box or not, the scaling is always applied to all the displays. Any idea how I could get this to work in preview? I've read some comments which seem to indicate that this should work in preview, though Paul Thurrott mentioned at his Winsupersite article that he either didn't get this to work.

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• Access Windows Boot Manager selector when timeout is set to 0?

  - by Kyle Cronin

  I've installed Wubi onto a Windows Vista computer. I've also set the boot timeout to 0: bcdedit /timeout 0 However, now I can't figure out how to get the menu to come up at all! I read on the internets that I had to hold F8 or space when starting up, but they doesn't seem to do anything. Is there a different key or setting I've overlooked? The computer itself is a Dell that's a few months old. The keyboard is USB, but I don't think that's the problem as I can get into the BIOS just fine. Maybe I'm doing it wrong? Am I supposed to hold the keys or rapidly tap them (I've tried both)? If it helps, here's the output from bcdedit: C:\Windows\system32>bcdedit Windows Boot Manager -------------------- identifier {bootmgr} device partition=C: description Windows Boot Manager locale en-US inherit {globalsettings} default {current} resumeobject {5460d9d2-d391-11dc-9d9f-aba67a8797c5} displayorder {current} {e2484fe7-5e97-11de-84d4-0024e8074422} toolsdisplayorder {memdiag} timeout 0 resume No Windows Boot Loader ------------------- identifier {current} device partition=C: path \Windows\system32\winload.exe description Windows Vista locale en-US inherit {bootloadersettings} recoverysequence {572bcd55-ffa7-11d9-aae0-0007e994107d} recoveryenabled Yes osdevice partition=C: systemroot \Windows resumeobject {5460d9d2-d391-11dc-9d9f-aba67a8797c5} nx OptIn Real-mode Boot Sector --------------------- identifier {e2484fe7-5e97-11de-84d4-0024e8074422} device partition=C: path \ubuntu\winboot\wubildr.mbr description Ubuntu

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• Using git through cygwin on windows 8

  - by 9point6

  I've got a windows 8 dev preview (not sure if it's relevant, but I never had this hassle on w7) machine and I'm trying to clone a git repo from github. The problem is that my ~/.ssh/id_rsa has 440 permissions and it needs to be 400. I've tried chmodding it but the any changes on the user permissions gets reflected in the group permissions (i.e. chmod 600 results in 660, etc). This appears to be constant throughout any file in the whole filesystem. I've tried messing with the ACLs but to no avail (full control on my user and deny everyone resulted in 000) here's a few outputs to help: $ git clone [removed] Cloning into [removed]... @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0660 for '/home/john/.ssh/id_rsa' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. bad permissions: ignore key: /home/john/.ssh/id_rsa Permission denied (publickey). fatal: The remote end hung up unexpectedly $ ll ~/.ssh total 6 -r--r----- 1 john None 1675 Nov 30 19:15 id_rsa -rw-rw---- 1 john None 411 Nov 30 19:15 id_rsa.pub -rw-rw-r-- 1 john None 407 Nov 30 18:43 known_hosts $ chmod -v 400 ~/.ssh/id_rsa mode of `/home/john/.ssh/id_rsa' changed from 0440 (r--r-----) to 0400 (r--------) $ ll ~/.ssh total 6 -r--r----- 1 john None 1675 Nov 30 19:15 id_rsa -rw-rw---- 1 john None 411 Nov 30 19:15 id_rsa.pub -rw-rw-r-- 1 john None 407 Nov 30 18:43 known_hosts $ set | grep CYGWIN CYGWIN='sbmntsec ntsec server ntea' I realize I could use msysgit or something, but I'd prefer to be able to do everything from a single terminal Edit: Msysgit doesn't work either for the same reasons

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• Strange windows boot problem - My computer won't boot from hard disk

  - by user29779

  Hello, Until yesterday, I had windows XP installed on my computer. After installing the OS, and setting the BIOS to boot from the hard-disk first, I discovered a strange problem - the OS wasn't booted and the only way I could get it to load was to insert a windows installation disk, enter repair mode, do "fixboot" and restart. The problem only occured when the computer was booted after shut-down. If I only restarted it, everything worked fine. Yesterday, I upgraded my XP to win7 and the problem persists. I tried the same "trick" I did with XP to get it to load, by entering repair and doing "bootrec /fixmbr" and "bootrec /fixboot" but that didn't work (and when I run "scanos" it didn't find any windows installations). Eventually, I got it to load by changing the settings in the BIOS to boot from CD first and HD second, removing the installation disk from the drive, letting it fail to boot from CD and then re-insert the disk. Anyone has any idea what may be the cause or how can I investigate this issue? Thanks! Marina

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• User directive in nginx generates error despite running as UID root

  - by Joost Schuur

  I'm running nginx on a MacOS X machine, installed with brew, and when I launch nginx, even with sudo, I get the following warning in my log file over and over again: 4/21/11 2:03:42 AM org.nginx[3788] nginx: [warn] the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /usr/local/etc/nginx/conf/nginx.conf:2 From nginx.conf: user jschuur staff; I'm already launching nginx with sudo, since I want the thing to listen on port 80. Shouldn't that be enough to give it the proper super user privileges? The nginx binary as it's installed: jschuur@Glenna:sbin ? master ls -la total 4544 drwxr-xr-x 3 jschuur staff 102 Apr 12 20:53 . drwxrwxr-x 15 jschuur staff 510 Apr 12 15:25 .. -rwxr-xr-x 1 jschuur staff 2325648 Apr 12 20:39 nginx FWIW, I recompiled the binary to set passenger up and moved it around from it's original location into /usr/local/sbin. Update: As it turns out MacOS X was restarting nginx after I'd stopped it, because the launchd plist in ~/Library/LaunchAgents had set it to 'KeepAlive'. However, because I installed this plist into my local user's LaunchAgents folder as opposed to /Library/LaunchAgents (or better yet /Library/LaunchDaemons, which run before you even log on), it wasn't executed as root. Because of an error about not having permissions to use port 80, it actually exited right away, but still wrote to the same log file as the nginx process I started with sudo. I had thought the errors stemming from the automatic restart were actually coming from my manual restart via sudo. So, bottom line, problem solved. The real problem here was the homebrew instructions specifically asking you to install the plist file into an area that wouldn't allow a local site to use port 80.

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• Repository bugzilla package changed to bugzilla3 in Lenny; upgradable?

  - by Pukku

  This question was asked in debianhelp.org almost half a year ago, but never got an answer. I wasn't the one who posted it, however I was today facing exactly the same question. Not sure if copying it to here as such is considered as inappropriate or something, but there's not really anything that I would even like to paraphrase... So let's just go. (I'm sure you will be happy to close it, if this is not the way to go :) Hello all! We are using a Bugzilla server install on a Debian 4/Etch server and are starting to look at the upgrade to Debian 5/Lenny. I was hoping to upgrade the existing Bugzilla server and database from the oldstable (v2.22) to the newer stable in Lenny (v3) when we get to doing a dist-upgrade. However from testing in a virtual machine it seems that the old package was called "Bugzilla" whereas the Lenny package is called "Bugzilla3" and I could not figure a way to directly upgrade between the two. Is it possible to establish some kind of upgrade path quickly after the dist-upgrade to minimise downtime using apt-get or aptitude? Going on past experiences I would not want to do a fresh install with the Bugzilla3 package and attempt to inject the old database into it (previous attempts failed miserably!) :(

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• Cacti is ignoring hash marks in interface aliases

  - by Matt Simmons

  I'm attempting to set up Cacti to monitor a router's interfaces, and I'm having trouble getting the graph templates to show the information that I'd like. Our interface configuration looks like this: interface GigabitEthernet3/6 description WalljackNumber # Server info no ip address no shutdown switchport switchport access vlan 116 switchport mode access ip dhcp snooping trust spanning-tree portfast The "Server Info" string is really just the machine name, and a short relevant description, such as "PolarSprings vmnic2". The important part appears to be that it follows the hashmark. When I run snmpwalk, I get the proper output: IF-MIB::ifAlias.230 = STRING: WalljackNumber # Server info But in Cacti, when I go into the graph templates and set the title to this: |host_description| - Traffic - |query_ifName| (|query_ifAlias|) All that shows up in the graph is: switchname - Traffic - Gi3/6 (WalljackNumber #) Which strikes me as a little weird. What I suppose MAY be happening is that somewhere in the cacti stream, it's interpreting # as being a comment and stripping everything after, but I'm not sure. I was hoping someone could tell me that this was a known documented behavior, or that I could change it in a setting that I wasn't aware of. The alternative answer is to change the delimiter from # to something else, but I've got over a thousand lit switchports on an old college infrastructure, and I'm not sure what else might be relying on them.

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• Issue with SSL using HAProxy and Nginx

  - by Ben Chiappetta

  I'm building a highly available site using a multiple HAProxy load balancers, Nginx web serves, and MySQL servers. The site needs to be able to survive load balancer or web servers nodes going offline without any interruption of service to visitors. Currently, I have two boxes running HAProxy sharing a virtual IP using keepalived, which forward to two web servers running Nginx, which then tie into two MySQL boxes using MySQL replication and sharing a virtual IP using heartbeat. Everything is working correctly except for SSL traffic over HAProxy. I'm running version 1.5 dev12 with openssl support compiled in. When I try to navigate to the virtual IP for haproxy over https, I get the message: The plain HTTP request was sent to HTTPS port. Here's my haproxy.cfg so far, which was mainly assembled from other posts: global log 127.0.0.1 local0 log 127.0.0.1 local1 notice # log 127.0.0.1 local0 user haproxy group haproxy daemon maxconn 20000 defaults log global option dontlognull balance leastconn clitimeout 60000 srvtimeout 60000 contimeout 5000 retries 3 option redispatch listen front bind :80 bind :443 ssl crt /etc/pki/tls/certs/cert.pem mode http option http-server-close option forwardfor reqadd X-Forwarded-Proto:\ https if { is_ssl } reqadd X-Proto:\ SSL if { is_ssl } server web01 192.168.25.34 check inter 1s server web02 192.168.25.32 check inter 1s stats enable stats uri /stats stats realm HAProxy\ Statistics stats auth admin:********* Any idea why SSL traffic isn't being passed correctly? Also, any other changes you would recommend? I still need to configure logging, so don't worry about that section. Thanks in advance your help.

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• Need to Remove Exchange 2003 Server That Crashed During Transition to 2010

  - by ThaKidd

  As the title stated, we were running an Exchange 2003 server that we knew was going down soon so we purchased a second server and installed Exchange 2010 into the AD. We managed to move all of the mailboxes off of 2003 and also managed to get the Offline Address Book setup on 2010. At this point the 2003 server bit the dust and will no longer boot. Therefore we were unable to properly uninstall Exchange and remove the last 2003 server so it still exists in AD. As far as the clients are concerned, everything is working properly. However, when I run the Microsoft Exchange Profile Analyzer, I still see the old server and its Administrative Group. I am going to guess that since the old server is showing up in AD, I will not be able to raise Exchange or AD functionality (as the 2003 server was also the only AD DC) levels. I have forced the 2003 DC out of AD so that is no longer an issue. Old Setup: Windows 2003 Server Enterprise & Exchange 2003 Standard New Setup: Windows 2010 Server Enterprise & Exchange 2010 Standard Two Questions: How do you go about manually forcing the 2003 server and its administrative group out of AD? When that is finished, where do you raise the Exchange mode (can't find this for the life of me)?

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• Rebuild Apple RAID set

  - by Clinton Blackmore

  We have a Mac Pro tower with an Apple RAID card in it using third party drives. When one drive failed, we replaced it and the RAID 5 set was nearly done rebuilding when the computer was rebooted. It did not come back up. We are now booting up off of a different internal volume, and have three (third-party) drives of identical spec (including revision and firmware) in the box. One of the drives is a global spare; the other two are recognized as belong to a RAID set but are in "Roaming" mode. The intention is to recreate the three-drive RAID set using the data on the two drives that are good. When we tell the system to create a RAID 5 using the three drives, it tells us that it'll create a RAID set but everything will be lost. There are no obvious options to rebuild a RAID using the two good drives and incorporating the third drive in Apple's RAID Utility, and we've looked through the options for the raidutil command. Fortunately, all important data is backed up, and we can rebuild from scratch, but, is there any way to make the RAIDset work again?

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• cron doesn't execute any task, but writes into log as executed

  - by FractalizeR

  I have strange problem on one of my servers. Cron does not execute any task, but it writes to it's log, that task has been executed successfully. Like some simulation mode is activated... Apr 30 03:03:08 nd-10049 crond[13387]: (root) CMD (php /usr/local/frb/backup.php) Apr 30 03:05:01 nd-10049 crond[13397]: (root) CMD (php /home/support/public_html/cron/cron_hourly.php>/home/support/public_html/cron/hourly.log) Apr 30 03:09:01 nd-10049 crond[19108]: (root) CMD (/etc/webmin/cron/tempdelete.pl ) Apr 30 03:10:01 nd-10049 crond[19467]: (root) CMD (php /home/support/public_html/cron/cron_hourly.php>/home/support/public_html/cron/hourly.log) Apr 30 03:14:44 nd-10049 crontab[21154]: (root) BEGIN EDIT (root) Apr 30 03:15:01 nd-10049 crond[21309]: (root) CMD (php /home/support/public_html/cron/cron_hourly.php>/home/support/public_html/cron/hourly.log) Apr 30 03:15:38 nd-10049 crontab[21154]: (root) REPLACE (root) Apr 30 03:15:38 nd-10049 crontab[21154]: (root) END EDIT (root) Apr 30 03:16:01 nd-10049 crond[14961]: (root) RELOAD (cron/root) Apr 30 03:20:02 nd-10049 crond[22620]: (root) CMD (php /home/support/public_html/cron/cron_hourly.php) There are no errors about cron in common log (messages). The OS is CentOS. What can I do to check what is the problem? What can the problem be?

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• Throughput; capacity planning help for C10K like design

  - by z8000

  I am designing a network service in which clients connect and stay connected -- the model is not far off from IRC less the s2s connections. I could use some help understanding how to do capacity planning, in particular with the system resource costs associated with handling messages from/to clients. There's an article that tried to get 1 million clients connected to the same server [1]. Of course, most of these clients were completely idle in the test. If the clients sent a message every 5 seconds or so the system would surely be brought to its knees. But... How do you do less hand-waving and you know, measure such a breaking point? We're talking about messages being sent by a client over a TCP socket, into the kernel, and read by an application. The data is shuffled around in memory from one buffer to another. Do I need to consider memory throughput ("5 GT/s" [2], etc.)? I'm pretty sure I have the ability to measure the basic memory requirements due to TCP/IP buffers, expected bandwidth, and CPU resources required to process messages. I'm a little dim on what I'm calling "thoughput". Help! Also, does anyone really do this? Or, do most people sort of hand-wave and see what the real world offers, and then react appropriately? [1] http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-3/ [2] http://en.wikipedia.org/wiki/GT/s

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• Durability of Websockets Server

  - by smitchell360

  I am starting to experiment with websockets. Does anyone know of a websockets server (open source or paid) that provides a durable store of the websocket "channel"? All of the examples that I have found do not address durability -- if a websockets server goes down, all "channel" data is lost. Services such as Pusher do not really discuss whether they address the durability issue (and I have not received a response from tech support yet). Happy to roll my own, but would rather not reinvent the wheel. EDIT: I'm not looking for websockets 101 information. That is readily available and understood. I'm looking for a server (open source or paid) that supports websockets and has a durable store for the websocket data so that, in the event that a server fails, a new server can take over where the original one left off. Two main purposes: 1. support failover scenarios contemplated by the websockets Network Working Group http://tools.ietf.org/html/draft-ibc-websocket-dns-srv-02#section-5.1 (most importantly so that missed messages are sent when a client connects to a failover server) 2. support scenarios where new subscribers must receive all past messages that were published. Of course this can be handled at the application layer...but that is not what I am looking for.

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• VBScript Capture StdOut from ShellExecute

  - by Joe

  I am trying to run the following code snippet as part of a tool to gather and log some pertinent system diagnostics. The purpose of this snippet is to gather the result of running the command: vssadmin list writers The snippet is as follows: ' Set WshShell = CreateObject("WScript.Shell") ' WScript.Echo sCurPath & "\vsswritercheck.bat" ' Set WshShellExec = WshShell.Exec("elevate.cmd cmd.exe /c " & sCurPath & "\vsswritercheck.bat") Set oShell = CreateObject("Shell.Application") oShell.ShellExecute "cmd.exe", sCurPath & "\vsswritercheck.bat", , "runas", 1 vsswriter = VSSWriterCheck Select Case oShell.Status Case WshFinished strOutput = oShell.StdOut.ReadAll Case WshFailed strOutput = oShell.StdErr.ReadAll End Select WScript.Echo strOutPut vsswriter = strOutPut With the first code snippet (commented out) I can run the command and capture stdout from the batch file. In the second code snipped, I cannot capture stdout. I need to be able to run the batch script with Elevated permissions, so I am looking for a compromise between the functionality of the two. I cannot run the entire calling script in elevated mode due to restrictions from other pieces of functionality. I am looking for any ideas on how to add this output to my log as I am running out of options that are within the scope of basic scripts.

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• Apache: How to redirect OPTIONS request with .htaccess?

  - by Milan Babuškov

  I have Apache 2.2.4 server with a lot of messages like this in the access_log: ::1 - - [15/May/2010:19:55:01 +0200] "OPTIONS * HTTP/1.0" 400 543 ::1 - - [15/May/2010:20:22:17 +0200] "OPTIONS * HTTP/1.0" 400 543 ::1 - - [15/May/2010:20:24:58 +0200] "OPTIONS * HTTP/1.0" 400 543 ::1 - - [15/May/2010:20:25:55 +0200] "OPTIONS * HTTP/1.0" 400 543 ::1 - - [15/May/2010:20:27:14 +0200] "OPTIONS * HTTP/1.0" 400 543 These are the "internal dummy connections" as explained on this page: http://wiki.apache.org/httpd/InternalDummyConnection The page also hits my main problem: "In 2.2.6 and earlier, in certain configurations, these requests may hit a heavy-weight dynamic web page and cause unnecessary load on the server. You can avoid this by using mod_rewrite to respond with a redirect when accessed with that specific User-Agent or IP address." Well, obviously I cannot use UserAgent because I minimized the server signature, but I could use IP address. However, I don't have a clue what should the RewriteCond and RewriteRule look for IPv6 address ::1. The website where this runs is using CodeIgniter, so there is already the following .htaccess in place, I just need to add to it: RewriteEngine on RewriteCond %{REQUEST_URI} ^/system.* RewriteRule ^(.*)$ /index.php?/$1 [G] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /index.php?/$1 [L] Any idea how to write this .htaccess rule?

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• Copy from CDROM is very slow in Ubuntu

  - by ???

  I'm using the command to copy CDROM image: # dd if=/dev/sr0 of=./maverick.iso But it's very slow, at about 350k bytes/sec. I've searched the google, and try the command # hdparm -vi /dev/sr0 /dev/sr0: HDIO_DRIVE_CMD(identify) failed: Bad address IO_support = 1 (32-bit) readonly = 0 (off) readahead = 256 (on) HDIO_GETGEO failed: Inappropriate ioctl for device Model=DVD-ROM UJDA775, FwRev=DA03, SerialNo= Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=unknown, MaxMultSect=0 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 IORDY=yes, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 AdvancedPM=no Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3: ATA/ATAPI-1,2,3,4,5 * signifies the current active mode Seems like DMA is already on. And a device test gives: # hdparm -t /dev/sr0 /dev/sr0: Timing buffered disk reads: 2 MB in 6.58 seconds = 311.10 kB/sec # sudo hdparm -tT /dev/sr0 /dev/sr0: Timing cached reads: 2 MB in 2.69 seconds = 760.96 kB/sec Timing buffered disk reads: m 4 MB in 5.19 seconds = 789.09 kB/sec The CD-ROM device and disc should be okay because I can copy it very fast in Windows, using UltraISO utility. So I guess there is something not configured right in Ubuntu, is it?

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• Linux: How do I remove bootchart from the boot process?

  - by java.is.for.desktop

  Hello, everyone! I have OpenSUSE 11.2. I removed bootchart and forgot to run mkinitrd. Now, right at the start of the boot process, I get boot/93-bootchart.sh: line 17: 462 Terminated stopinitrd 5 I Can't find any 93-bootchart.sh anywhere. Failsafe boot mode doesn't help. Earlier I got an error message about non existing /sbin/bootchartd, but I just copied /bin/cat to /sbin/bootchartd using a GParted boot disk. I tried to use chroot with an OpenSUSE boot disk, but mkinitrd can't find the root device, which is there actually (/dev/sda5). How can I make my system boot again? EDIT Ok, now I managed to re-install the bootchart rpm, using OpenSUSE boot disk and chmod. The system starts again. But that annoying bootchart is still there. I will not try again to remove it. First I will try to figure out, how to disable it during the boot process. Hopefully with your help ;)

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• Long access time for static web page on virtual machine

  - by Karol

  My setup Windows 7 on workstation that I use at work (with domain) and home (no domain) Virtual machine (VMWare) that runs Arch Linux (I will call it just "Linux") with network interface in bridged mode. Linux serves web pages with Nginx. IP address of Linux machine is 192.168.0.16 and is added to C:\windows\system32\drivers\etc\hosts: 192.168.0.16 bridged bri IP address of Windows workstation is added to /etc/hosts: 192.168.0.10 workstation I can add more details to my setup description (I am not sure what is relevant). The question Often (but not always) it takes long time for a web browser (Firefox) to open static web page served by Linux. I am sure it is not a performance issue. To be more specific: it takes about ~20 seconds to resolve(?) the address http://bridged for a web browser. Additionally I have just installed samba service and noticed similar problem, so it is not specific to browser & http. Initial access for samba shares also takes long time.

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• It takes a long time until Windows XP recognize I connected USB drive

  - by Pavol G

  I have a problem with my new USB disk. When I connect it to my laptop with Windows XP SP2 it takes about 4-5min until Windows recognizes it and shows it as a new disk. I can also see (disk's LED is blinking) that something is scanning the disk when I connect it; when this is done Windows immediately recognize it. Also when I'm copying data to this disk the speed is about 3.5MB/sec. It's connected using USB2.0. I tried to check for spyware (using Spybot), also tried running Windows in safe mode. But still have the same problems. Do you have any idea what could help to solve this problem? On Windows Vista (another laptop) everything is ok, disk loads in about 15sec and speed is about 20-30MB/sec. Edit: I tried to update to SP3 - no change Edit2: When this "strange" scanning occurs I can see that DPCs process is taking about 50% of CPU. When the scan ends (after 5min) this process take 0% again. Edit3: About the scan time, currently it's taking about 5min, but this time is growing as I'm adding more data to the disk, currently its about 40GB and I don't want to see how long it will take with 1000GB. Thanks a lot for every advice!

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• VirtualBox problems writing to shared folders (Guest Additions installed)

  - by vincent

  I am trying to setup a shared folder from the host (ubuntu 10.10) to mount on a virtualized CentOS 5.5 with Guest Additions (4.0.0) installed (Guest addition features are working ie. seamless mode etc.). I am able to successfully mount the share with: mount -t vboxsf -o rw,exec,uid=48,gid=48 sf_html /var/www/html/ (uid and guid belong to the apache user/group) the only problem is that once mounted and I try to write/create directories and files I get the following: mkdir: cannot create directory `/var/www/html/test': Protocol error I am using the proprietary version of VirtualBox version 4.0.0 r69151. Has anyone had the same problem and been able to fix it or has any idea how to potentially fix this? Another question, the reason for setting this up is this. Our production servers are on CentOS 5.5 however I am a great fan of Ubuntu and would like to develop on Ubuntu rather than CentOS. However in order to stay as close to the production environment I would like to virtualize CentOS to use a web server and use the shared folder as web root. Anyone know whether this isn't a good idea? Has anyone successfully been able to set this up? Thanks guys, your help is always much appreciated and if you need any more information please let me know.

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• Photoshop CS6 Corrupted File recovery

  - by Ben Franchuk

  Last night I was working on a client application mock-up in photoshop, but was goin to take a break from my work so I saved the .PSD file on my internal HDD and put my computer into stand-by mode once the file had finished saving. Unfortunately my computer crashed while it was entering stand-by and shut itself down (photoshop was still open). I did not boot it again to make sure all my files were ok because they had already been saved, but today once I opened up the file again it was extremely corrupted and also completely un-editable (screenshot bellow). so what im asking is there any way to recover my work, or at least some of it? i have put in a good few days work on this project and would hate to have to restart it. the size of the file is 3070 KB, even though it reads as 712 KB in photoshop. i dont know if these file sizes are larger or either smaller than the original non-corrupted file's size, but considering all the layers in the file i suspect it was larger before it corrupted. im using windows XP professional 32bit SP3. both my OS and said .PSD file are located on the same internal HDD (74.4 GB). i do have an external HDD (1.5 TB) but i primarily only use it for movies music and tv shows. i dont know if it was plugged in t the time of me editing the document last, though, if it means anything. i have tried many image and PSd recovery softwares but none have returned any results that may help recover my work. edit: i tried using a photo reccovery software (odboso Photorecovery) that actually seems to recover the corrupted file in question judging by the size of the file, but i cannot recover it because of the licence fee. knowing that the file is still likely on my HDD, what location might it be located?

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• Software mirroring (RAID1) versus "Fake Raid" for new Windows 7 install

  - by kquinn

  I've just ordered two new hard drives for my main desktop and a copy of Windows 7 Professional 64-bit. I'd like to do a clean install of Win7 onto the new drives (leaving my old XP Pro boot partition around for a while in case something goes disastrously wrong, etc.). I want to have them set up in mirrored (RAID-1) mode. My understanding is that Win7 Pro can do software mirroring, but can I set this up directly at install time? If so, how? Note that I'd like the disk to be split into three partitions (OS/Apps&Data/Bulk data), all of which should be mirrored. Would it be better (more reliable or faster) to use my motherboard's hardware RAID support? My motherboard is an older nVidia nForce 680i SLI, which is not the most stable of motherboards, and I'm not sure how trustworthy its RAID1 configuration might be (or if Win7 could even detect and install onto a hardware-mirrored volume). Also, the performance characteristics of RAID1 are rather different than RAID0 or RAID5, and I'm wondering if Win7's software mirroring might actually be faster than hardware RAID1 (for example, I'm more of a Unix admin when I have to wear the sysadmin hat, and I've had great success deploying ZFS; most hardware RAID1 implementations have to read both disks and compare results to look for data errors, but ZFS can read from only one disk in the mirror and just use the built-in checksum, meaning it can have up to 2x the number of reads in-flight, as long as there's no data corruption). Edit: Okay, my question about whether Windows 7 can do software mirroring has been answered, and it can. I'm still unsure whether Windows software RAID or my motherboard's hardware "fake RAID" function is a better choice, though. Remember, I'm only interested in mirroring -- not the more complicated striping or parity operations that generally show the poor performance of crappy motherboard RAID solutions.

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