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• Exchange 2010 DAG + VMWare HA = no support?

  - by Dan

  We currently have an Exchange 2003 clustered environment (two machine cluster) that we're looking to upgrade to 2010. We recently purchased a VMWare virtualization environment (three Dell R710's with an EMC NS-120 serving up NFS datastores - iSCSI is available) that we wish to use for this new environment. I'm seeing that Microsoft does not support Exchange 2010 DAGs with a virtualization high availability solution (see links below). I would like to utilize the DAG to ensure the data stays available if one host goes down, and HA to ensure that if the physical host goes down, the VM will come back up on the other available host. Does anybody know why MS does not support this? VMWare HA will only restart the VM if it is hung/down - I don't see any difference between this and restarting the physical box if someone pulled the power... Will we only run into issues with support if it has something to do with HA/DAG failover or will they see we have HA and tell us to put it on a physical box even if it has nothing to do with HA? If we disable HA for these VM's will that satisfy them on a support case? Has anybody set up an Exchange 2010 DAG on VMware with HA enabled? Will they have any issues with using an NFS datastore? We have much greater flexibility on the EMC with NFS vs iSCSI, so I would prefer to continue utilizing that. Thanks for any input! http://www.vmwareinfo.com/2010/01/verifying-microsoft-exchange-2010.html Take a look at the second image under "Not Supported" http://technet.microsoft.com/en-us/library/aa996719.aspx "Microsoft doesn't support combining Exchange high availability solutions (database availability groups (DAGs)) with hypervisor-based clustering, high availability, or migration solutions. DAGs are supported in hardware virtualization environments provided that the virtualization environment doesn't employ clustered root servers."

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• how to back up data from a machine that keeps hanging

  - by Amit Phatarphekar

  Hello - I have a storage server running opensolaris. But lately its been acting up - it hangs at random times due to some SCSI/ATA related error messages. I've tried to fix it without any progress, so I'm giving up now. The machine keeps hanging every 30 minutes or 1 hr ...sometimes after 4 hrs. Its very unpredictable. So I've decided to just reformat the storage server and start from scratch...maybe I'll just not use solaris and install something else, since the errors are related to solaris running on ATA HDD or something. Question - Before I reformat it, I want to back up some of the important data on it. Like it has a VM with 200 GB disk files, it has a whole bunch of ISOs stored on it etc etc. I'm using a simple scp to copy the files over to a different machine. My issue is that, because the machine hangs....sometimes my file copy is incomplete and I have to start all over again. Lets say I'm trying to copy a 200GB file which takes like 4 hrs....IF the machine hangs before the whole file i copied over...I have to recopy the file from scratch. Is there a solution to copy the files over such that if the machine hangs or network goes down..the copying can resume from where it left off? - like if 50 GB of a 200GB file was copied and machine hung....next time, it'll just continue to copy rest of the amount, instead of starting all over again. Thanks Amit

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• Grub hangs at "Starting up ..." when USB flash card reader is plugged in (on Ubuntu Hardy)

  - by Laurence Gonsalves

  I have a PC with Ubuntu Hardy installed. The machine boots fine unless my USB flash card reader (one of those N-in-1 readers by MediaGear) is plugged in at startup. If the reader is plugged in, the boot process proceeds as normal until it gets to the screen that says "Starting up ...". At that point it just hangs forever. To work around this I currently leave the reader unplugged when booting, and then plug it back in after I see that Ubuntu is actually starting. This is annoying though, especially when I reboot the machine (typically for updates), forget to unplug the reader, and walk away only to come back hours later to find the machine hung. My guess is that the presence of the reader is confusing Grub about where to find the kernel. The weird thing is that Grub is on the same drive as the kernel I want it to boot so clearly the drive is still readable even when the flash card reader is plugged in. Is there some way I can tell Grub to never go looking on the flash card reader?

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• Sharepoint Central Administration stuck / high CPU usage

  - by johnnyb10

  I'm using WSS 3 and I recently added a new web application to my SharePoint Server. After adding it, I wasn't able to open the Central Administration site. I also noticed that there was a w3wp.exe error (Event ID 1000) in the Event Viewer. The situation now is that the w3wp.exe process is hovering around 50% CPU usage continuously. I installed a program called IIS Peek, and it shows continuous GET requests on the Central Administration site; this happens even if I stop the Central Administration site in IIS. The IP addresses identified in the GET request is my workstation, which is what I used to attempt to access Central Administration after I created the new web application. Can someone explain what's going on and how I might fix it? It seems as if my computer tried to access Central Administration and then it hung, but the page requests that were happening at the time are somehow continuing over and over again. So my two problems are the inability to access Central Administration, and the CPU Usage of w3wp.exe, which I'm assuming are two symptoms of the same problem. I'd like to know if there's anything I can do besides restarting IIS, because we have clients accessing other sites on this server. Thanks.

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• Reconfiguring PHP with OpenSSL Extension on CentOS

  - by Evan

  Hi Guys - Long time browser, first time poster! I have a CentOS Dedicated server running just fine. I'm trying to reconfigure PHP to include the OpenSSL extensions so I can use some of the Youtube API's. I installed OpenSSL with yum, so it's in place on the server. I'm just now having trouble getting PHP to use it as an extension. I got the latest PHP tarball, untarred, set my configure string (./configure) using the proper parameter for openssl (--with-openssl=/usr) and it checked out just fine. I ran Make, then Make Install. I am getting hung up here. After it makes the PEAR config file it seems to quit. I guess I'm not sure, but it seems like there is a LOT more that should be happening. Here is a screenshot: http://www.evanfell.com/screencaps/6iamks.png Restarting apache shows no change to the PHP running on the server. Is there are PEAR issue killing the Install process? Or is there an other issue? Thanks In Advance. Happy to clarify and provide more info.

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• SVN hangs on commit - any suggestions for troubleshooting?

  - by Richard Beier

  We're having a problem with SVN... Subversion clients such as TortoiseSVN hang when we commit any more than a few files at a time to our server. Everything appears to actually be committed successfully to the repository; but the client hangs after all the data has been transmitted. We're using version 1.4.4 of the SVN server. We use the svn:// protocol rather than http to connect. We've reproduced this problem with several clients: TortoiseSVN (1.6.10), AnkhSVN (2.1), and the Silk command-line client (1.6.12). This is happening for everyone on the team, though some people seem to be more affected than others. If someone commits only a few files, it often works; but with more than half a dozen files, it usually hangs. Does anyone have troubleshooting suggestions? This has been happening sporadically for a while, but it's become pretty consistent lately. We've been working around the issue by killing the hung SVN client, doing "svn cleanup", and then doing "svn up"; but sometimes that causes tree conflicts. Another workaround is to blow away the workspace and check it out again after every commit; but of course that's pretty annoying. Are there any diagnostics that could help us troubleshoot this? We're considering upgrading to SVN 1.6 server, and installing the server on a new machine; but we're wondering if there's an easier solution. Thanks for your help, Richard

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• Windows 7 Won't Boot

  - by Vie

  I recently built a new computer, my fifth one. ASUS Maximus III Formula LGA 1156 Intel P55 ATX Motherboard EVGA 01G-P3-1452-TR GeForce GTS 450 Superclocked 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Video Card COOLMAX RM-1000B 1000W ATX psu Intel Core i7-875K lynnfield 2.93GHz LGA 1156 95w Quad-Core unlocked processor G.SKILL Ripjaws Series 16 (4x4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) memory WD VelociRaptor WD3000GLFS 300gb 10000 RPM SATA 3.0Gb/s Hard Drive Sony Optiarc CD/DVD Burner model AD-7261S-0B LightScribe Windows 7 Home Premium 64-bit It gets hung up on the starting windows screen. When I went to install the OS it did the same thing wouldn't go past the windows logo, so I put the new HDD into my old computer and installed windows 7 thinking it was just an installer error. Put the fully installed HDD back into my new machine and it still gets stuck on the starting windows screen. I've tried most everything I've looked up. Disabled USB, Disabled Turbo Boost, Disabled everything that wasn't essential(just about every configuration I can think of), took it apart and put it back together, took all the ram out save one 4g stick(wouldn't even boot when I did this), did a memory scan which came back successful, I don't know what could be wrong. Only thing I can think of is a compatibility issue somewhere, but I've ran over it again and again and I don't know where there would be an issue like that. Need Backup! .<

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• SSH session becomes unresponsive when logged into Ubuntu Server virtual machine using VirtualBox

  - by nickbart

  Hi everyone, I'm really at my wits end here, so I'm hoping someone here can help me. I have a virtual machine running Ubuntu Server 9.10. It's just a small development environment so I can keep my code separate from the test and production environments. I am running it through VirtualBox 3.1.6 on a laptop running Ubuntu Desktop 9.10. I have it set up with a bridged network connection and it is bridged to my laptop's wireless adapter. We have no wired connections in this office. I boot up the VM and everything is fine. I can SSH into it using gnome-terminal and for a while everything is Kosher. Then seemingly randomly, the SSH terminal session with hang. No error message, nothing; it just becomes unresponsive. If I go to the VirtualBox terminal I find the VM itself is perfectly fine. It can ping and I can SSH out with it. If I restart the networking on the VM the SSH session in my gnome-terminal will most of the time become responsive again. Here's an interesting point, the SSH session will sometimes die right in the middle of me typing something (this points to it not being an idle session issue) and if I go to the VirtualBox terminal and restart the networking and then return to my gnome-terminal SSH session I find that it will come back to life and what I typed when the session hung originally will magically type itself in to the buffer. So, my input is getting stored somewhere and just can't make its way to the VM until the networking on the VM is restarted. I've tried different versions of VirtualBox and used vmdk images and vdi images and nothing seems to work. I can't tell if the problem is with my laptop, VirtualBox, or the Ubuntu Server VDI. Is there anyway to debug this issue? Or has anyone out there seen anything similar? Your help is much appreciated. Nick

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• Oracle: Getting ORA-01195 and ORA-01110 when attempting resetlogs

  - by MacAnthony

  I am trying to get our database to startup. When I login to sqlplus and do a startup, I get the message: Total System Global Area 534462464 bytes Fixed Size 2215064 bytes Variable Size 331350888 bytes Database Buffers 192937984 bytes Redo Buffers 7958528 bytes Database mounted. ORA-01589: must use RESETLOGS or NORESETLOGS option for database open So I do a shutdown, startup mount (which works fine) and then run: SQL> alter database recover using backup controlfile until cancel; alter database recover using backup controlfile until cancel * ERROR at line 1: ORA-00283: recovery session canceled due to errors ORA-19909: datafile 1 belongs to an orphan incarnation ORA-01110: data file 1: '/<path>/system01.dbf' SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01195: online backup of file 1 needs more recovery to be consistent ORA-01110: data file 1: '/<path>/system01.dbf' I know I've used instructions to get me past this error before, but I seem to be having trouble tracking it down. A bit of history: We wanted to refresh the data in this from another db so we attempted to do a expdb/impdb into this instance. The impdb did not complete correctly and got an end of file error message in it and hung (I still have the message in a log if it's important). Since the instance would start at this point, we decided to use the hotbackup process we have to restore the db. The hotbackups are from another server/instance. We went through the same process 2 weeks ago. At the point of recreating the control file is where we got to the issue above.

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• SVN hangs on commit - any suggestions for troubleshooting?

  - by Richard Beier

  We're having a problem with SVN... Subversion clients such as TortoiseSVN hang when we commit any more than a few files at a time to our server. Everything appears to actually be committed successfully to the repository; but the client hangs after all the data has been transmitted. We're using version 1.4.4 of the SVN server. We use the svn:// protocol rather than http to connect. We've reproduced this problem with several clients: TortoiseSVN (1.6.10), AnkhSVN (2.1), and the Silk command-line client (1.6.12). This is happening for everyone on the team, though some people seem to be more affected than others. If someone commits only a few files, it often works; but with more than half a dozen files, it usually hangs. Does anyone have troubleshooting suggestions? This has been happening sporadically for a while, but it's become pretty consistent lately. We've been working around the issue by killing the hung SVN client, doing "svn cleanup", and then doing "svn up"; but sometimes that causes tree conflicts. Another workaround is to blow away the workspace and check it out again after every commit; but of course that's pretty annoying. Are there any diagnostics that could help us troubleshoot this? We're considering upgrading to SVN 1.6 server, and installing the server on a new machine; but we're wondering if there's an easier solution. Thanks for your help, Richard

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• Git clone/pull across local network

  - by Tom Sarduy

  I'm trying to clone/pull a repository in another PC using Ubuntu Quantal. I have done this on Windows before but I don't know what is the problem on ubuntu. I tried these: git clone file:////pc-name/repo/repository.git git clone file:////192.168.100.18/repo/repository.git git clone file:////user:pass@pc-name/repo/repository.git git clone smb://c-pc/repo/repository.git git clone //192.168.100.18/repo/repository.git Always I got: Cloning into 'intranet'... fatal: '//c-pc/repo/repository.git' does not appear to be a git repository fatal: The remote end hung up unexpectedly or fatal: repository '//192.168.100.18/repo/repository.git' does not exist More: The other PC has username and password Is not networking issue, I can access and ping it. I just installed git doing apt-get install git (dependencies installed) I'm running git from the terminal (I'm not using git-shell) What is causing this and how to fix this? Any help would be great! UPDATE I have cloned the repo on Windows using git clone //192.168.100.18/repo/intranet.git without problems. So, the repo is accessible and exist! Maybe the problem is due user credentials?

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• setting up tracd behind mod_proxy?

  - by FilmJ

  I'm having trouble setting up mod_proxy and tracd. Seems almost all the search results for this problem take me to the built-in trac documentation page that mentions it as an option. I have several VirtualServers already running on the box in question, so running tracd on port 80 or 443 is not an option, but I do want to make my trac server accessible on this machine without exposing an additional port via the firewall. Making things even more complicated is that I have multiple trac repositories being served by the same instance of tracd, and so I want to set it up so: http://trac.abc.com is proxy'd to localhost:8000/projects/abcproject, and http://trac.def.com is proxy'd to localhost:8000/projects/defproject. Currently, the setup I have below results in 100% 403 errors. The server is running as www-data and the directory where all trac files are stored is owned by www-data, AND tracd (as show below) is running as www-data, so not sure where it's getting hung up. The relevant configuration on /var/apache2/sites-enabled/trac.abc.com: ProxyPass / http://localhost:8000/abcproject ProxyPassReverse / http://localhost:8000/abcproject The relevant configuration on /var/apache2/sites-enabled/trac.def.com: ProxyPass / http://localhost:8000/defproject ProxyPassReverse / http://localhost:8000/defproject The command used to instantiate tracd: tracd -a defproject,/var/www/vhosts/trac-common/users.htdigest,DEFProject -a abcproject,/var/www/vhosts/trac-common/users.htdigest,ABCProject -p 8000 -b localhost -e /var/www/vhosts/trac-common/projects If I access the site at http://localhost:8000/ everything works fine, but if I try to access via any of the proxy'd hosts I end up with 403 at every turn. I've used mod_proxy successfully as described above for other servers, such as couchdb, so maybe this has to do with the headers sent by tracd??

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• Sharepoint Central Administration stuck / high CPU usage

  - by johnnyb10

  I'm using WSS 3 and I recently added a new web application to my SharePoint Server. After adding it, I wasn't able to open the Central Administration site. I also noticed that there was a w3wp.exe error (Event ID 1000) in the Event Viewer. The situation now is that the w3wp.exe process is hovering around 50% CPU usage continuously. I installed a program called IIS Peek, and it shows continuous GET requests on the Central Administration site; this happens even if I stop the Central Administration site in IIS. The IP addresses identified in the GET request is my workstation, which is what I used to attempt to access Central Administration after I created the new web application. Can someone explain what's going on and how I might fix it? It seems as if my computer tried to access Central Administration and then it hung, but the page requests that were happening at the time are somehow continuing over and over again. So my two problems are the inability to access Central Administration, and the CPU Usage of w3wp.exe, which I'm assuming are two symptoms of the same problem. I'd like to know if there's anything I can do besides restarting IIS, because we have clients accessing other sites on this server. Thanks.

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• Crond offset five minute schedule

  - by sam

  Is it possible to offset a cron script set to run every 5 minutes? I have two scripts, script 1 collects some data from one database and inserts it into another, script 2 pulls out this data and a lot of other data and creates some pretty reports from it. Both scripts need to run every 5 minutes. I want to offset script 2 by one minute so that it can create a report from the new data. E.G. I want script one to run at :00, :05, :10, :15 [...] and script two to run at :01, :06, :11, :16 [...] every hour. The scripts are not dependent on each other, and script 2 must run regardless of whether script one was successful or not. But it would be useful if the reports could have hte latest data. Is this possible with cron? Post; I have thought about using both commands in a shell script so they run immediately after each other but this wouldn't work, sometimes script 1 can get hung up on waiting for external APIs etc. so might take up to 15 mins to run, but script 2 must run every 5 minutes so doing it this way would stop/delay the execution of script 2. If I could set this in Cron it would mean script 2 would run regardless of what script 1 was doing

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• Microsoft Office 2003 applications crash on 'Save As' to a network mapped drive

  - by Archit Baweja

  Hey guys, so I'm not sure if it belongs on ServerFault forums so figured I'd ask here first because its a workstation/client side issue. I have a client where we have windows server 2003 setup, with windows xp professional setup on all the workstations. We've setup a 'domain' and all workstations logon to the domain (authenticated by the Windows Domain Controller), and in the logon script we map drives on to each workstation. Everything is working peachy except for one workstation, where when I open a file in excel from a mapped drive, it opens fine, but when I go to hit Save As, the Save As dialog pops and hangs up. I cannot perform any other action in excel. When I try cancel the Save As dialog, excel crashes. The mapped drive opens up fine in Windows Explorer. To further investigate this issue, I created a new blank text document on the network drive in Windows Explorer. I then opened it. Then hit save as, and the Save As dialog opened up fine and it would let me save the document. I repeated the above steps for a word document. However this time the Save As dialog hung/froze again. So I'd imagine its a Microsoft Office Issue. Any ideas?

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• Windows XP hanging on login screen

  - by Nathan W

  I have been given two Eee PC 100HA to manage for some people, they are both running the same hardware and XP home but one is having some strange problems with logging on. The main problem is that it hangs at the login screen for ages and sometimes never gets to the desktop. The strange thing is it only seems to do it after the computer has been cold started, but it won't do it if the computer has been restarted. I have made two logs of the start up with process monitor but every time the logger is attached the computer will log in fine. I have also set the computer to blue screen and create a crash dump when you press ctrl scroll twice but when I do it at the hung login it just sits at a black screen and I don't get a crash dump, I have turned off the auto system restart on failure option also. I can usually fix most computer start up and shutdown problems but this one has got me stuffed. Has anyone had the same problems before, or can recommend something that I can try? Cheers.

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• SQL Server 2000, large transaction log, almost empty, performance issue?

  - by Mafu Josh

  For a company that I have been helping troubleshoot their database. In SQL Server 2000, database is about 120 gig. Something caused the transaction log to grow MUCH larger than normal to over 100 gig, some hung transaction that didn't commit or roll back for a few days. That has been resolved and it now stays around 1% full or less, due to its hourly transaction log backups. It IS my understanding that a GROWING transaction log file size can cause performance issues. But what I am a little paranoid about is the size. Although mainly empty, MIGHT it be having a negative effect on performance? But I haven't found any documentation that suggests this is true. I did find this link: http://www.bigresource.com/MS_SQL-Large-Transaction-Log-dramatically-Slows-down-processing-any-idea-why--2ahzP5wK.html but in this post I can't tell if their log was full or empty, and there is not any replies to the post in this link. So I am guessing it is not a problem, anyone know for sure?

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• Explorer.exe hangup during move large file into external drive

  - by PiotrK

  During move large files (700mb+) to external drive formated NTFS via USB 3.0 I've noticed strange things about explorer.exe (I am using Windows 7 up to date) Sometimes after move file the explorer get stuck (ie. it can happen after few files during move of several large files) - moving window freeze and I am unable to kill explorer (via taskmgr, or cmdline TASKKILL). In command line I've got something like this (taskmgr shows that explorer.exe is still running - I've got the same PID every time I try to kill it and no diagnostic message): C:\Windows\system32TASKKILL /F /IM explorer.exe SUKCES: proces "explorer.exe" o identyfikatorze PID 6296 zostal zakonczony. C:\Windows\system32TASKKILL /F /IM explorer.exe SUKCES: proces "explorer.exe" o identyfikatorze PID 6296 zostal zakonczony. If I try to run another explorer.exe process at this point, I got desktop icon and start bar back but I cannot open any explorer window After few minutes explorer.exe finally dies and I am able to rerun it without rebooting File that I moved have two copies - one local and one on the external drive (the original file wasn't delete after move); Both copies seems to contain the same data (same length and CRC info) If this happen during move of multiply files, only some files are moved and one of them have two copies (both locally and on the external drive) What can I do to fix those explorer hangs? Added: The same problem exist when copying files, it hangsup between large files Similar problem exist when I tried to use TotalCommander (x64): copying paused at 80% of one of files, TC didn't hung up (but clicking cancel in copying dialog box doesn't have any effect). During this pause I can't kill TotalCmd.exe just like Explorer.exe Added (2): This problem seems to disappear when I use 32 bit applications (like TotalCommander (x86) ), but I need to do more testing to be sure of this Added (3): There are several errors in event log, source: disk, id: 11, qualifiers: 49156, task: 0, level: 2, keywords: 0x80000000000000 (This may be important, and I forgot to mention this): Main disk is encrypted via Truecrypt (boot-in password)

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• What can I do to determine the root cause of a Windows server hanging/freezing?

  - by Aaronaught

  We set up a new server here a few weeks ago that I am informally responsible for managing. Almost everything works perfectly except for one thing: Every so often it hangs without warning. To clarify: When I say hangs, I mean completely. None of the services respond and I'm unable to even get onto a local console - the display acts as though there's no VGA signal. One time, the server actually responded to pings, another time I got the "destination host unreachable" response, but most of the time the pings just time out, as one would expect for a hung server. Event logs don't show anything after a reboot. I don't mean that they don't show anything interesting, I mean that they don't show anything at all from before the failure occurs to after the reboot. And there are never any performance problems, strange errors, or other obvious signs of impending doom before it happens. I don't expect any easy answers here. What I'd like to know his I can methodically determine the root cause of this problem, be it a misbehaving service, defective hardware, or something else. Is there any kind of logging I can set up that will help me get to the bottom of this? Any hardware diagnostics or remote monitoring? Anything else I can do to help me discover what's actually happening, or at least be able to eliminate what isn't wrong? Just to reiterate, I really don't want to start speculating about possible causes and take a trial-and-error approach, because it's going to be at least several days at a time before I would have conclusive results. I'm looking for solutions to reliably trace the problem to its source.

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• High data on recv-q buffer and thread lock on java.io.BufferedInputStream in linux

  - by Sagar Patel

  We have a java application running on linux (ubuntu server). We have been facing high recv-q problem since quite some time. Application gets hang and does not read data from socket every few hours. In thread dump, we have found below stack trace. "Receiver-146" daemon prio=10 tid=0x00007fb3fc010000 nid=0x7642 runnable [0x00007fb5906c5000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream. socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:150) at java.net.SocketInputStream.read(SocketInputStream.java:121) at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) at java.io.BufferedInputStream.read1(BufferedInputStream.java:275) at java.io.BufferedInputStream.read(BufferedInputStream.java:334) - locked <0x00000007688f1ff0> (a java.io.BufferedInputStream) at org.smpp.TCPIPConnection.receive(TCPIPConnection.java:413) at org.smpp.ReceiverBase.receivePDUFromConnection(ReceiverBase.java:197) at org.smpp.Receiver.receiveAsync(Receiver.java:351) at org.smpp.ReceiverBase.process(ReceiverBase.java:96) at org.smpp.util.ProcessingThread.run(ProcessingThread.java:199) at java.lang.Thread.run(Thread.java:722) We are not able to trace the exact reason behind this? Kindly help. We are using 16 core machine and load on the system is around 30-40 at the time of issue. We use command ss dst <ip> to find out recv-q. Recently we have been facing issues with recv-q size getting hung, were in receive buffer gets stuck at some point of time. But recvQ size is not decreasing and as a result we are losing a lot of hits from the other side, our application is not accepting any data.

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• Ubuntu 10.04 on virtualbox gives error: Target filesystem doesn't have /sbin/init \ No init found. Try passing init= bootarg

  - by Philip

  I'm a linux newbie and the only reason I have it installed is so I can stop having Windows incompatibility issues with Ruby on Rails. Having said that, it sure has been nice, and much faster, and I don't think I'll be doing any Winrails stuff anytime soon. So I created a virtualmachine using virtualbox and have had ubuntu on it for the last 3 weeks. Recently ubuntu asked if it could update a few things, I clicked 'ok'. Now it won't boot and I get this error: *mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /sys on /root/sys failed: No such file or directory ... Target filesystem doesn't have /sbin/init. No init found. Try passing init= bootarg BusyBox v1.13.3... (initramfs) _ * So I cruised the forums and there are a variety of solutions, but they all have to do with booting from the live cd. (which I assume is the ISO image I used to install ubuntu in the first place). But when I boot from that CD, it just hangs on the ubuntu screen, and the little dots keep cycling white to red, but it hung there for an hour so I think it was stuck. Not sure what I can do; can I do anything from the busybox shell (or whatever that is) to fix things? The thing is, it took about 10 hours to get everything the way I needed with all the gems and whatnot. And I didn't really write down what I tweaked, and I'm middle aged, so all that information has leaked out by now and I don't want to do it again. I'd really like to repair my existing install. One question you might have is, is there something wrong with the ISO? I don't think so, because I made a new virtual machine and used that same iso file to install a fresh ubuntu. Any help much appreciated. Phil

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• Master does not appear to be a git repository error

  - by EmmyS

  I've inherited a position and instructions for creating a new git repository. Unfortunately I've run into problems and no one here knows what to do. Hoping someone can help me out. Here are the instructions I was left: Create a new repository: For these steps you need to be in the gitosis-admin repository, if you don't have it, in a suitable parent folder do: git clone [email protected]:gitosis-admin.git Edit gitosis.conf file - in gitosis-admin root, under [group base-repo] section, add the name of the new repo to the end of the "writable =" section. Commit change and push back to gitosis-admin master. For the next commands, my_new_project represents the name of your project mkdir my_new_project cd my_new_project git init Copy in any files you want to use to start the repo git commit -a -m "Initializing new repository" git remote add origin [email protected]:my_new_project.git git push master git push master:qa So I did 1 and 2, with no problem. It created a local folder on my machine called gitosis-admin. I edited the gitosis.conf file as indicated. But when I try to do step 3 (which I assume is git push gitosis-admin master) bash tells me that fatal: 'master' does not appear to be a git repository fatal: The remote end hung up unexpectedly What am I doing wrong?

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• EMERGENCY! Update Statement for critical mysql production database now running for 18 hours, need help.

  - by Tim

  We have a table with 500 million rows. Unfortunately, one of the columns was int(11), which is a signed int, and it was an incrementing value that just rolled over the 2.1 billion magic number. This immediately caused downtime for about 10.000 users. We discussed many solutions, and decided that we could just roll back this value safely, by say, a billion. But we had to roll it back for every row. Here is what we did: update Table1 Set MessageId = case when MessageId < 1073741824 then 0 else MessageId - 1073741824 end; I tested this on a table with 10 million rows and it took 11 minutes. So I assumed the larger table would take 550 minutes, or 9 hours. This was going to be our biggest downtime in 3 years. (We're a startup). It's now going on 18 hours. What should we do? Please don't say what we should have done. I think we should have updated a few million rows at a time. Is there a way we can see progress? Could Mysql have hung? Using mysql 5.0.22. Thanks!

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• Using screen to monitor non-interactive scripts (or some other solution)

  - by Michael

  I have some autonomous scripts that run commands on remote machines over ssh. These scripts rely on getting stdout, stderr, and the return code of each command run. I want to be able to monitor the progress of the scripts on each target machine so that I can see if something has hung and possibly intervene if necessary. My initial idea was to have the scripts run commands in a screen session, so that the person monitoring could simply attach to the session with screen -x. However, it was hard to do that from a script since screen is an interactive program. I can send a command to the screen session with screen -S session -X stuff "command^M", but then I don't get the output and return code that I need back. My second idea was to put script /path/to/log in ~/.bash_profile and log the entire session to a file. Then the monitoring person could simply tail the log file. However, this doesn't provide the interactivity that I was looking for. Any ideas on how to solve this problem?

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• Fans still running after shutdown after upgrade to Windows 8

  - by docaholic

  I'm running into a really annoying issue after upgrading from Windows 7 to Windows 8. I first noticed it during the initial (clean) install; when the installer tried to reboot, my machine (an acer aspire 4755G) just hung after the initial shutdown. That is, after the screen turns off, the power lights and fans are still running, and the machine itself doesn't restart. (I let it sit for a good 15 minutes, and it still didn't change) I managed to do a hard reset (power button for 5 seconds) and the install finished, but every shutdown/restart has been like that. Interestingly enough, hibernate works just fine. I've looked at other solutions where it said to use the bcdedit /set disabledynamictick yes and that didn't work. I also turned off the "Fast Boot" option in the power settings menu. That didn't work either. So far, the only option is to do the hard shut down by holding down the power button, but that proves to be horribly inconvenient. Any ideas on what's going on here?

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