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• Boost::Thread linking error on OSX?

  - by gct

  So I'm going nuts trying to figure this one out. Here's my basic setup: I'm compiling a shared library with a bunch of core functionality that uses a lot of boost stuff. We'll call this library libpf_core.so. It's linked with the boost static libraries, specifically the python, system, filesystem, thread, and program_options libraries. This all goes swimmingly. Now, I have a little test program called test_socketio which is compiled into a shared library (it's loaded as a plugin at runtime). It uses some boost stuff like boost::bind and boost::thread, and it's linked again libpf_core.so (which has the boost libraries included remember). When I go to compile test_socketio though, out of all my plugins it gives me a linking error: [ Building test_socketio ] g++ -c -pg -g -O0 -I/usr/local/include -I../include test_socketio.cc -o test_socketio.o g++ -shared test_socketio.o -lpy_core -o test_socketio.so Undefined symbols: "boost::lock_error::lock_error()", referenced from: boost::unique_lock<boost::mutex>::lock() in test_socketio.o ld: symbol(s) not found collect2: ld returned 1 exit status And I'm going crazy trying to figure out why this is. I've tried explicitly linking boost::thread into the plugin to no avail, tried ensuring that I'm using the boost headers associated with the libraries linked into libpf_core.so in case there was a conflict there. Is there something OSX specific regarding boost that I'm missing? In my searching on google I've seen a number of other people get this error but no one seems to have come up with a satisfactory solution.

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• Copy only files that are newer

  - by ErocM

  I am currently using this code: if (!Directory.Exists(command2)) Directory.CreateDirectory(command2); if (Directory.Exists(vmdaydir)) Directory.Delete(vmdaydir,true); if (!Directory.Exists(vmdaydir)) Directory.CreateDirectory(vmdaydir); var dir = Path.GetDirectoryName(args[0]); sb.AppendLine("Backing Up VM: " + DateTime.Now.ToString(CultureInfo.InvariantCulture)); Microsoft.VisualBasic.FileIO.FileSystem.CopyDirectory(dir, vmdaydir); sb.AppendLine("VM Backed Up: " + DateTime.Now.ToString(CultureInfo.InvariantCulture)); As you can see, I am deleting the directory, then I am copying the folder back. This is taking way to long since the directory is ~80gb in size. I realized that I do not need to copy all the files, only the ones that have changed. How would I copy the files from one folder to another but only copying the files that are newer? Anyone have any suggestions? ==== edit ==== I assume I can just do a file compare of each file and then copy it to the new directory, iterating through each folder/file? Is there a simpler way to do this?

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• Publish Git repository to SVN

  - by Ken Williams

  I and my small team work in Git, and the larger group uses Subversion. I'd like to schedule a cron job to publish our repositories current HEADs every hour into a certain directory in the SVN repo. I thought I had this figured out, but the recipe I wrote down previously doesn't seem to be working now: git clone ssh://me@gitserver/git-repo/Projects/ProjX px2 cd px2 svn mkdir --parents http://me@svnserver/svn/repo/play/me/fromgit/ProjX git svn init -s http://me@svnserver/svn/repo/play/me/fromgit/ProjX git svn fetch git rebase trunk master git svn dcommit Here's what happens when I attempt: % git clone ssh://me@gitserver/git-repo/Projects/ProjX px2 Cloning into 'ProjX'... ... % cd px2 % svn mkdir --parents http://me@svnserver/svn/repo/play/me/fromgit/ProjX Committed revision 123. % git svn init -s http://me@svnserver/svn/repo/play/me/fromgit/ProjX Using higher level of URL: http://me@svnserver/svn/repo/play/me/fromgit/ProjX => http://me@svnserver/svn/repo % git svn fetch W: Ignoring error from SVN, path probably does not exist: (160013): Filesystem has no item: File not found: revision 100, path '/play/me/fromgit/ProjX' W: Do not be alarmed at the above message git-svn is just searching aggressively for old history. This may take a while on large repositories % git rebase trunk master fatal: Needed a single revision invalid upstream trunk I could have sworn this worked previously, anyone have any suggestions? Thanks.

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• MAC : How to check if the file is still being copied in cpp?

  - by Peda Pola

  In my current project, we had a requirement to check if the file is still copying. We have already developed a library which will give us OS notification like file_added , file_removed , file_modified, file_renamed on a particular folder along with the corresponding file path. The problem here is that, lets say if you add 1 GB file, it is giving multiple notification such as file_added , file_modified, file_modified as the file is being copied. Now i decided to surpass these notifications by checking if the file is copying or not. Based on that i will ignore events. I have written below code which tells if the file is being copied or not which takes file path as input parameter. Details:- In Mac, while file is being copied the creation date is set as some date less than 1970. Once it is copied the date is set to current date. Am using this technique. Based on this am deciding that file is being copied. Problem:- when we copy file in the terminal it is failing. Please advice me any approach. bool isBeingCopied(const boost::filesystem::path &filePath) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; bool isBeingCopied = false; if([[[[NSFileManager defaultManager] attributesOfItemAtPath:[NSString stringWithUTF8String:filePath.string().c_str()] error:nil] fileCreationDate] timeIntervalSince1970] < 0) { isBeingCopied = true; } [pool release]; return isBeingCopied; }

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• unbuffered I/O in Linux

  - by stuck

  I'm writing lots and lots of data that will not be read again for weeks - as my program runs the amount of free memory on the machine (displayed with 'free' or 'top') drops very quickly, the amount of memory my app uses does not increase - neither does the amount of memory used by other processes. This leads me to believe the memory is being consumed by the filesystems cache - since I do not intend to read this data for a long time I'm hoping to bypass the systems buffers, such that my data is written directly to disk. I dont have dreams of improving perf or being a super ninja, my hope is to give a hint to the filesystem that I'm not going to be coming back for this memory any time soon, so dont spend time optimizing for those cases. On Windows I've faced similar problems and fixed the problem using FILE_FLAG_NO_BUFFERING|FILE_FLAG_WRITE_THROUGH - the machines memory was not consumed by my app and the machine was more usable in general. I'm hoping to duplicate the improvements I've seen but on Linux. On Windows there is the restriction of writing in sector sized pieces, I'm happy with this restriction for the amount of gain I've measured. is there a similar way to do this in Linux?

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• Exploiting Path Traversal Vulnerability

  - by Maputo

  I have a Java Web App running on Tomcat on which I'm supposed to exploit Path traversal vulnerability. There is a section (in the App) at which I can upload a .zip file, which gets extracted in the server's /tmp directory. The content of the .zip file is not being checked, so basically I could put anything in it. I tried putting a .jsp file in it and it extracts perfectly. My problem is that I don't know how to reach this file as a "normal" user from browser. I tried entering ../../../tmp/somepage.jsp in the address bar, but Tomcat just strips the ../ and gives me http://localhost:8080/tmp/ resource not available. Ideal would be if I could somehow rename the somepage.jsp so that it gets extracted in the web directory of the Web App. But then, the Linux filesystem disallows slashes in filenames (e.g. ../../home/webapp/somepage.jsp). Are there maybe any escape sequences that would translate to / after extracting? Any ideas would be highly appreciated. Note: This is a school project in a Security course where I'm supposed to locate vulnerabilities and correct them. Not trying to harm anyone...

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• Hadoop File Read

  - by user3684584

  Hadoop Distributed Cache Wordcount example in hadoop 2.2.0. Copied file into hdfs filesystem to be used inside setup of mapper class. protected void setup(Context context) throws IOException,InterruptedException { Path[] uris = DistributedCache.getLocalCacheFiles(context.getConfiguration()); cacheData=new HashMap(); for(Path urifile: uris) { try { BufferedReader readBuffer1 = new BufferedReader(new FileReader(urifile.toString())); String line; while ((line=readBuffer1.readLine())!=null) { System.out.println("**************"+line); cacheData.put(line,line); } readBuffer1.close(); } catch (Exception e) { System.out.println(e.toString()); } } } Inside Driver Main class Configuration conf = new Configuration(); String[] otherArgs = new GenericOptionsParser(conf,args).getRemainingArgs(); if (otherArgs.length != 3) { System.err.println("Usage: wordcount <in> <out>"); System.exit(2); } Job job = new Job(conf, "word_count"); job.setJarByClass(WordCount.class); job.setMapperClass(Map.class); job.setReducerClass(Reduce.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(IntWritable.class); FileInputFormat.addInputPath(job, new Path(otherArgs[0])); Path outputpath=new Path(otherArgs[1]); outputpath.getFileSystem(conf).delete(outputpath,true); FileOutputFormat.setOutputPath(job,outputpath); System.out.println("CachePath****************"+otherArgs[2]); DistributedCache.addCacheFile(new URI(otherArgs[2]),job.getConfiguration()); System.exit(job.waitForCompletion(true) ? 0 : 1); But getting exception java.io.FileNotFoundException: file:/home/user12/tmp/mapred/local/1408960542382/cache (No such file or directory) So Cache functionality not working properly. Any Idea ?

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• Another boost error

  - by user1676605

  On this code I get the enourmous error static void ParseTheCommandLine(int argc, char *argv[]) { int count; int seqNumber; namespace po = boost::program_options; std::string appName = boost::filesystem::basename(argv[0]); po::options_description desc("Generic options"); desc.add_options() ("version,v", "print version string") ("help", "produce help message") ("sequence-number", po::value<int>(&seqNumber)->default_value(0), "sequence number") ("pem-file", po::value< vector<string> >(), "pem file") ; po::positional_options_description p; p.add("pem-file", -1); po::variables_map vm; po::store(po::command_line_parser(argc, argv). options(desc).positional(p).run(), vm); po::notify(vm); if (vm.count("pem file")) { cout << "Pem files are: " << vm["pem-file"].as< vector<string> >() << "\n"; } cout << "Sequence number is " << seqNumber << "\n"; exit(1); ../../../FIXMarketDataCommandLineParameters/FIXMarketDataCommandLineParameters.hpp|98|error: no match for ‘operator<<’ in ‘std::operator<< [with _Traits = std::char_traits](((std::basic_ostream &)(& std::cout)), ((const char*)"Pem files are: ")) << ((const boost::program_options::variable_value*)vm.boost::program_options::variables_map::operator[](((const std::string&)(& std::basic_string, std::allocator (((const char*)"pem-file"), ((const std::allocator&)((const std::allocator*)(& std::allocator()))))))))-boost::program_options::variable_value::as with T = std::vector, std::allocator , std::allocator, std::allocator ’|

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• How to check volume is mounted or not using python with a dynamic volume name

  - by SR query

  import subprocess def volumeCheck(volume_name): """This function will check volume name is mounted or not. """ volume_name = raw_input('Enter volume name:') volumeCheck(volume_name) print 'volume_name=',volume_name p = subprocess.Popen(['df', '-h'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) p1, err = p.communicate() pattern = p1 if pattern.find(volume_name): print 'volume found' else: print 'volume not found' While running i always got wrong result "volume found". root@sr-query:/# df -h Filesystem Size Used Avail Use% Mounted on rootfs 938M 473M 418M 54% / /dev/md0 938M 473M 418M 54% / none 250M 4.9M 245M 2% /dev /dev/md2 9.7M 1.2M 8.0M 13% /usr/config /dev/md7 961M 18M 895M 2% /downloads tmpfs 250M 7.9M 242M 4% /var/volatile tmpfs 250M 0 250M 0% /dev/shm tmpfs 250M 0 250M 0% /media/ram **/dev/mapper/vg9-lv9 1016M 65M 901M 7% /VolumeData/sp /dev/mapper/vg10-lv10 1016M 65M 901M 7% /VolumeData/cp** root@sr-query:/# root@sr-query:/# root@sr-query:/# python volume_check.py Enter volume name:raid_10volume volume_name= raid_10volume **volume found** root@sr-query:/# I enterd raid_10volume its not listed here please check the df -h command out put(only 2 volume there sp and cp) , then how it reached else part. what is wrong in my code? Thanks in advance. is there any other way to do this work ! ?

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• What are the first steps in C#/.NET development?

  - by paxdiablo

  Okay, I'm biting the bullet and deciding to get into the whole Microsoft/C#/.NET culture and I'm going to do this by putting together a simple (hah!) application. It will basically be an application in which I want to store images and associate with them other optional things. It must be able to import images from the filesystem (and hopefully camera/scanner) then allow the user to add text, audio and other information. I plan to store the images and auxillary information into a database. What the application will do with said data isn't important (yet). Keep in mind I know absolutely nothing about C# or .NET although, as an old codger, I know a great deal about many other things and will regale you with stories and anecdotes until you quietly slip away :-) What are the first steps to take in developing such an application? I've already set out UI layouts and likely process flows although it may be that the development environment dictates changes. Development environment is currently XP SP3 + VS2008 (though I can upgrade if absolutely necessary). What should I be looking at as the first step? Are there any gotchas I should be looking out for?

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• Loading specific files from arbitrary directories?

  - by Haydn V. Harach

  I want to load foo.txt. foo.txt might exist in the data/bar/ directory, or it might exist in the data/New Folder/ directory. There might be a different foo.txt in both of these directories, in which case I would want to either load one and ignore the other according to some order that I've sorted the directories by (perhaps manually, perhaps by date of creation), or else load them both and combine the results somehow. The latter (combining the results of both/all foo.txt files) is circumstantial and beyond the scope of this question, but something I want to be able to do in the future. I'm using SDL and boost::filesystem. I want to keep my list of dependencies as small as possible, and as cross-platform as possible. I'm guessing that my best bet would be to get a list of every directory (within the data/ folder), sort/filter this list, then when I go to load foo.txt, I search for it in each potential directory? This sounds like it would be very inefficient, if I have dozens of potential directories to search through every time. What's the best way to go about accomplishing this? Bonus: What if I want some of the directories to be archives? ie. considering both data/foo/ and data/bar.zip to both be valid, and pull foobar.txt from either one without caring.

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• How to get the recently viewed pictures on the web browser?

  - by quantity

  I want to retrieve the recently viewed pictures from IE. I know that all the files from IE exist in the internet temporary directory, commonly with the path like "C:\Documents and Settings[account]\Local Settings\Temporary Internet Files". Here something strange for me comes. I wrote a program of C++ to retrieve the directory above, and the result says it contains three subdirectories and one file. These subdirectories are Content.IE5, OIS, and OLK145, each contains lots of pictures, which I think are the ones I browsed recently on the web. The only file is desktop.ini, which is not my concern. However, when I open the directory in the file system, there are no subdirectories at all, but a lot of files, different from the ones in the subdirectories retrieved by the program. I have several questions. Frist of all, why the content of the temorary internet files seems different? Which is the actual situation about the directory? Second, I found that in filesystem explorer, the files in the directory seem like some link to the ones on the web, not physically exist on my computer, is this true? Finally, how can I get the pictures viewed from IE recently with C++, as well as their original url?

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• VB 2008 - Index was outside the bounds of the array

  - by Jan

  Hey guys I'm having a problem while reading a config.cfg file of my program. I can read the 23. char of the file but I can't read the 24. char (last char in file). This is the code: Dim CFGReader2 As System.IO.StreamReader CFGReader2 = _ My.Computer.FileSystem.OpenTextFileReader(CurDir() & "\Config.cfg") Dim Server(2) As String Server(0) = CFGReader2.ReadToEnd.Chars(23)//This part works If Server(0) = 0 Then Server(1) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". ElseIf Server(0) = 1 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 10 + Server(2) ElseIf Server(0) = 2 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 20 + Server(2) ElseIf Server(0) = 3 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 30 + Server(2) End If And this is the file: Language = 2 Server = 11 Thanks for the answer! Frosty

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• BitmapFactory.decodeFile out of memory with images 2400x2400

  - by alasarr

  I need to send an image from a file to a server. The server request the image in a resolution of 2400x2400. What I'm trying to do is: 1) Get a Bitmap using BitmapFactory.decodeFile using the correct inSampleSize. 2) Compress the image in JPEG with a quality of 40% 3) Encode the image in base64 4) Sent to the server I cannot achieve the first step, it throws an out of memory exception. I'm sure the inSampleSize is correct but I suppose even with inSampleSize the Bitmap is huge (around 30 MB in DDMS). Any ideas how can do it? Can I do these steps without created a bitmap object? I mean doing it on filesystem instead of RAM memory. This is the current code: // The following function calculate the correct inSampleSize Bitmap image = Util.decodeSampledBitmapFromFile(imagePath, width,height); // compressing the image ByteArrayOutputStream baos = new ByteArrayOutputStream(); image.compress(Bitmap.CompressFormat.JPEG, 40, baos); // encode image String encodedImage = Base64.encodeToString(baos.toByteArray(),Base64.DEFAULT));

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• Integration testing - can it be done right?

  - by Max

  I used TDD as a development style on some projects in the past two years, but I always get stuck on the same point: how can I test the integration of the various parts of my program? What I am currently doing is writing a testcase per class (this is my rule of thumb: a "unit" is a class, and each class has one or more testcases). I try to resolve dependencies by using mocks and stubs and this works really well as each class can be tested independently. After some coding, all important classes are tested. I then "wire" them together using an IoC container. And here I am stuck: How to test if the wiring was successfull and the objects interact the way I want? An example: Think of a web application. There is a controller class which takes an array of ids, uses a repository to fetch the records based on these ids and then iterates over the records and writes them as a string to an outfile. To make it simple, there would be three classes: Controller, Repository, OutfileWriter. Each of them is tested in isolation. What I would do in order to test the "real" application: making the http request (either manually or automated) with some ids from the database and then look in the filesystem if the file was written. Of course this process could be automated, but still: doesn´t that duplicate the test-logic? Is this what is called an "integration test"? In a book i recently read about Unit Testing it seemed to me that integration testing was more of an anti-pattern?

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• Bash script to find a directory, list it's contents and sub-folders info

  - by lithiumion

  Hi I want to write a script that will: 1- locate folder "store" on a *nix filesystem 2- move into that folder 3- print list of contents with last modification date 4- calculate sub-folders size This folder's absolute path changes from server to server, but the folder name remains the same always. There is a config file that contains the correct path to that folder though, but it doesn't give absolute bath to it. Sample Config: Account ON DIR-Store /hdd1 Scheduled YES ?According to the config file the absolute path would be "/hdd1/backup/store/" I need the script to grep the "/hdd1" or anything beyond the word "Config-Store", add "/backup/store/" to it, move into folder "store", print list of it's contents, and calculate sub-folders size. Until now I manually edit the script on each server to reflect the path to the "store" folder. Here is a sample script: #!/bin/bash echo " " echo " " echo "Moving Into Directory" cd /hdd1/backup/store/ echo "Listing Directory Content" echo " " ls -alh echo "*******************************" sleep 2 echo " " echo "Calculating Backup Size" echo " " du -sh store/* echo "********** Done! **********" I know I could use grep cat /etc/store.conf | grep DIR-Store Just don't know how to get around selecting the path, adding the "/backup/store/" and moving ahead. Any help will be appreciated

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• How can I get sessions to work if I'm using Google App Engine + Django 1.1?

  - by user341642

  Is there a way for me to get sessions working? I know Django has built in session management, and GAE has some tools for it if you're using their watered down version of Django 0.96, but is there a way to get sessions to work if you're trying to use GAE w/ Django 1.1 (i.e. use_library() call). I assume using a db-backed session doesn't work, and a file system backed one won't work b/c we don't have access to the filesystem if we deploy to the Google production servers. This kinda worked (as in didn't crap out) when I used SessionMiddleware backed by a local-memory backed cache and a non-persistent cache (i.e. setting SESSION_ENGINE to django.contrib.sessions.backends.cache). But the session never seems to persist in this case, no matter how I set the timeouts. A new session key is generated on every page reload. Maybe this is b/c the GAE assumes complete statelessness with each request and blows away my local cache? Apologies in advance, I'm pretty new to Python. Any suggestions would be greatly appreciated.

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• 3Ware 9650SE RAID-6, two degraded drives, one ECC, rebuild stuck

  - by cswingle

  This morning I came in the office to discover that two of the drives on a RAID-6, 3ware 9650SE controller were marked as degraded and it was rebuilding the array. After getting to about 4%, it got ECC errors on a third drive (this may have happened when I attempted to access the filesystem on this RAID and got I/O errors from the controller). Now I'm in this state: > /c2/u1 show Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) ------------------------------------------------------------------------ u1 RAID-6 REBUILDING 4%(A) - - 64K 7450.5 u1-0 DISK OK - - p5 - 931.312 u1-1 DISK OK - - p2 - 931.312 u1-2 DISK OK - - p1 - 931.312 u1-3 DISK OK - - p4 - 931.312 u1-4 DISK OK - - p11 - 931.312 u1-5 DISK DEGRADED - - p6 - 931.312 u1-6 DISK OK - - p7 - 931.312 u1-7 DISK DEGRADED - - p3 - 931.312 u1-8 DISK WARNING - - p9 - 931.312 u1-9 DISK OK - - p10 - 931.312 u1/v0 Volume - - - - - 7450.5 Examining the SMART data on the three drives in question, the two that are DEGRADED are in good shape (PASSED without any Current_Pending_Sector or Offline_Uncorrectable errors), but the drive listed as WARNING has 24 uncorrectable sectors. And, the "rebuild" has been stuck at 4% for ten hours now. So: How do I get it to start actually rebuilding? This particular controller doesn't appear to support /c2/u1 resume rebuild, and the only rebuild command that appears to be an option is one that wants to know what disk to add (/c2/u1 start rebuild disk=<p:-p...> [ignoreECC] according to the help). I have two hot spares in the server, and I'm happy to engage them, but I don't understand what it would do with that information in the current state it's in. Can I pull out the drive that is demonstrably failing (the WARNING drive), when I have two DEGRADED drives in a RAID-6? It seems to me that the best scenario would be for me to pull the WARNING drive and tell it to use one of my hot spares in the rebuild. But won't I kill the thing by pulling a "good" drive in a RAID-6 with two DEGRADED drives? Finally, I've seen reference in other posts to a bad bug in this controller that causes good drives to be marked as bad and that upgrading the firmware may help. Is flashing the firmware a risky operation given the situation? Is it likely to help or hurt wrt the rebuilding-but-stuck-at-4% RAID? Am I experiencing this bug in action? Advice outside the spiritual would be much appreciated. Thanks.

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• External USB drive is failing

  - by dma_k

  I have an external USB 2.0 drive WD My Book Mirror Edition, running in RAID 1 (mirroring) mode. A while ago the hard drive started to fail: it stops responding (directories are not listed returning an error after a big timeout). Sometimes it works for weeks before a failure, sometimes – few hours. Small write operations (like removing few files or editing a small file) do not harm, but when copying large files to the drive over the network, or creating the archive locally, the kernel dumps. Also interesting to note that once kernel has failed, Linux does not want to reboot normally (reboot hangs); when Linux box is shutdown with power button, WD drive does not go to sleep mode (as it usually does): leds continue to run, pressing and holding the "shutdown" button on drive's back panel does not do anything; only unplugging the power cord helps. Here goes the boot log: Aug 16 00:32:21 kernel: [ 1.514106] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver Aug 16 00:32:21 kernel: [ 1.657738] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23 Aug 16 00:32:21 kernel: [ 1.673747] ehci_hcd 0000:00:1d.7: setting latency timer to 64 Aug 16 00:32:21 kernel: [ 1.673751] ehci_hcd 0000:00:1d.7: EHCI Host Controller Aug 16 00:32:21 kernel: [ 1.725224] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 Aug 16 00:32:21 kernel: [ 1.741647] ehci_hcd 0000:00:1d.7: using broken periodic workaround Aug 16 00:32:21 kernel: [ 1.761790] ehci_hcd 0000:00:1d.7: cache line size of 32 is not supported Aug 16 00:32:21 kernel: [ 1.761873] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xfdfff000 Aug 16 00:32:21 kernel: [ 1.796043] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00 Aug 16 00:32:21 kernel: [ 1.879069] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 Aug 16 00:32:21 kernel: [ 1.895446] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 16 00:32:21 kernel: [ 1.911796] usb usb1: Product: EHCI Host Controller Aug 16 00:32:21 kernel: [ 1.928015] usb usb1: Manufacturer: Linux 2.6.32-5-686 ehci_hcd Aug 16 00:32:21 kernel: [ 1.944331] usb usb1: SerialNumber: 0000:00:1d.7 Aug 16 00:32:21 kernel: [ 1.961285] usb usb1: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 1.994412] hub 1-0:1.0: USB hub found Aug 16 00:32:21 kernel: [ 2.010864] hub 1-0:1.0: 8 ports detected Aug 16 00:32:21 kernel: [ 2.085939] uhci_hcd: USB Universal Host Controller Interface driver Aug 16 00:32:21 kernel: [ 2.191945] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23 Aug 16 00:32:21 kernel: [ 2.226029] uhci_hcd 0000:00:1d.0: setting latency timer to 64 Aug 16 00:32:21 kernel: [ 2.226034] uhci_hcd 0000:00:1d.0: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.243237] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 Aug 16 00:32:21 kernel: [ 2.260390] uhci_hcd 0000:00:1d.0: irq 23, io base 0x0000fe00 Aug 16 00:32:21 kernel: [ 2.277517] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001 Aug 16 00:32:21 kernel: [ 2.294815] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 16 00:32:21 kernel: [ 2.312173] usb usb2: Product: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.329534] usb usb2: Manufacturer: Linux 2.6.32-5-686 uhci_hcd Aug 16 00:32:21 kernel: [ 2.346828] usb usb2: SerialNumber: 0000:00:1d.0 Aug 16 00:32:21 kernel: [ 2.412989] usb usb2: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 2.430651] usb 1-2: new high speed USB device using ehci_hcd and address 2 Aug 16 00:32:21 kernel: [ 2.449046] hub 2-0:1.0: USB hub found Aug 16 00:32:21 kernel: [ 2.466514] hub 2-0:1.0: 2 ports detected Aug 16 00:32:21 kernel: [ 2.484639] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19 Aug 16 00:32:21 kernel: [ 2.537750] uhci_hcd 0000:00:1d.1: setting latency timer to 64 Aug 16 00:32:21 kernel: [ 2.537756] uhci_hcd 0000:00:1d.1: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.555085] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 Aug 16 00:32:21 kernel: [ 2.572231] uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000fd00 Aug 16 00:32:21 kernel: [ 2.589593] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001 Aug 16 00:32:21 kernel: [ 2.606869] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 16 00:32:21 kernel: [ 2.624134] usb usb3: Product: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.641329] usb usb3: Manufacturer: Linux 2.6.32-5-686 uhci_hcd Aug 16 00:32:21 kernel: [ 2.658505] usb usb3: SerialNumber: 0000:00:1d.1 Aug 16 00:32:21 kernel: [ 2.675843] usb usb3: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 2.692864] hub 3-0:1.0: USB hub found Aug 16 00:32:21 kernel: [ 2.709651] hub 3-0:1.0: 2 ports detected Aug 16 00:32:21 kernel: [ 2.727378] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18 Aug 16 00:32:21 kernel: [ 2.768252] uhci_hcd 0000:00:1d.2: setting latency timer to 64 Aug 16 00:32:21 kernel: [ 2.768258] uhci_hcd 0000:00:1d.2: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.806679] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 Aug 16 00:32:21 kernel: [ 2.824117] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000fc00 Aug 16 00:32:21 kernel: [ 2.841405] usb 1-2: New USB device found, idVendor=1058, idProduct=1104 Aug 16 00:32:21 kernel: [ 2.858448] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Aug 16 00:32:21 kernel: [ 2.875347] usb 1-2: Product: My Book Aug 16 00:32:21 kernel: [ 2.892113] usb 1-2: Manufacturer: Western Digital Aug 16 00:32:21 kernel: [ 2.908915] usb 1-2: SerialNumber: 575532553130303530353538 Aug 16 00:32:21 kernel: [ 2.943242] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001 Aug 16 00:32:21 kernel: [ 2.960405] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 16 00:32:21 kernel: [ 2.977615] usb usb4: Product: UHCI Host Controller Aug 16 00:32:21 kernel: [ 2.994687] usb usb4: Manufacturer: Linux 2.6.32-5-686 uhci_hcd Aug 16 00:32:21 kernel: [ 3.011711] usb usb4: SerialNumber: 0000:00:1d.2 Aug 16 00:32:21 kernel: [ 3.029589] usb usb4: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 3.082027] sd 2:0:0:0: [sda] Attached SCSI disk Aug 16 00:32:21 kernel: [ 3.103953] usb 1-2: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 3.122625] hub 4-0:1.0: USB hub found Aug 16 00:32:21 kernel: [ 3.140484] hub 4-0:1.0: 2 ports detected Aug 16 00:32:21 kernel: [ 3.161680] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) -> IRQ 16 Aug 16 00:32:21 kernel: [ 3.181257] uhci_hcd 0000:00:1d.3: setting latency timer to 64 Aug 16 00:32:21 kernel: [ 3.181263] uhci_hcd 0000:00:1d.3: UHCI Host Controller Aug 16 00:32:21 kernel: [ 3.198614] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5 Aug 16 00:32:21 kernel: [ 3.216012] uhci_hcd 0000:00:1d.3: irq 16, io base 0x0000fb00 Aug 16 00:32:21 kernel: [ 3.249877] Uniform CD-ROM driver Revision: 3.20 Aug 16 00:32:21 kernel: [ 3.267765] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001 Aug 16 00:32:21 kernel: [ 3.284947] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 16 00:32:21 kernel: [ 3.302023] usb usb5: Product: UHCI Host Controller Aug 16 00:32:21 kernel: [ 3.319215] usb usb5: Manufacturer: Linux 2.6.32-5-686 uhci_hcd Aug 16 00:32:21 kernel: [ 3.336298] usb usb5: SerialNumber: 0000:00:1d.3 Aug 16 00:32:21 kernel: [ 3.368377] Initializing USB Mass Storage driver... Aug 16 00:32:21 kernel: [ 3.390652] usbcore: registered new interface driver hiddev Aug 16 00:32:21 kernel: [ 3.408109] scsi4 : SCSI emulation for USB Mass Storage devices Aug 16 00:32:21 kernel: [ 3.425281] sr 0:0:1:0: Attached scsi CD-ROM sr0 Aug 16 00:32:21 kernel: [ 3.438978] sr 0:0:1:0: Attached scsi generic sg0 type 5 Aug 16 00:32:21 kernel: [ 3.456328] usbcore: registered new interface driver usb-storage Aug 16 00:32:21 kernel: [ 3.474564] usb-storage: device found at 2 Aug 16 00:32:21 kernel: [ 3.474567] usb-storage: waiting for device to settle before scanning Aug 16 00:32:21 kernel: [ 3.475320] sd 2:0:0:0: Attached scsi generic sg1 type 0 Aug 16 00:32:21 kernel: [ 3.492587] USB Mass Storage support registered. Aug 16 00:32:21 kernel: [ 3.510930] usb usb5: configuration #1 chosen from 1 choice Aug 16 00:32:21 kernel: [ 3.531076] hub 5-0:1.0: USB hub found Aug 16 00:32:21 kernel: [ 3.548399] hub 5-0:1.0: 2 ports detected Aug 16 00:32:21 kernel: [ 3.591743] input: Western Digital My Book as /devices/pci0000:00/0000:00:1d.7/usb1/1-2/1-2:1.1/input/input2 Aug 16 00:32:21 kernel: [ 3.609515] generic-usb 0003:1058:1104.0001: input,hidraw0: USB HID v1.11 Device [Western Digital My Book] on usb-0000:00:1d.7-2/input1 Aug 16 00:32:21 kernel: [ 3.627466] usbcore: registered new interface driver usbhid Aug 16 00:32:21 kernel: [ 8.581664] usb-storage: device scan complete Aug 16 00:32:21 kernel: [ 8.624270] scsi 4:0:0:0: Direct-Access WD My Book 1008 PQ: 0 ANSI: 4 Aug 16 00:32:21 kernel: [ 8.655135] scsi 4:0:0:1: Enclosure WD My Book Device 1008 PQ: 0 ANSI: 4 Aug 16 00:32:21 kernel: [ 8.675393] sd 4:0:0:0: Attached scsi generic sg2 type 0 Aug 16 00:32:21 kernel: [ 8.698669] scsi 4:0:0:1: Attached scsi generic sg3 type 13 Aug 16 00:32:21 kernel: [ 8.723370] sd 4:0:0:0: [sdb] 1953513472 512-byte logical blocks: (1.00 TB/931 GiB) Aug 16 00:32:21 kernel: [ 8.750477] sd 4:0:0:0: [sdb] Write Protect is off Aug 16 00:32:21 kernel: [ 8.769411] sd 4:0:0:0: [sdb] Mode Sense: 10 00 00 00 Aug 16 00:32:21 kernel: [ 8.769414] sd 4:0:0:0: [sdb] Assuming drive cache: write through Aug 16 00:32:21 kernel: [ 8.822971] sd 4:0:0:0: [sdb] Assuming drive cache: write through Aug 16 00:32:21 kernel: [ 8.841978] sdb: sdb1 Aug 16 00:32:21 kernel: [ 8.905580] sd 4:0:0:0: [sdb] Assuming drive cache: write through Aug 16 00:32:21 kernel: [ 8.924173] sd 4:0:0:0: [sdb] Attached SCSI disk Aug 16 00:32:21 kernel: [ 11.600492] XFS mounting filesystem sdb1 Aug 16 00:32:21 kernel: [ 12.222948] Ending clean XFS mount for filesystem: sdb1 After a while the following appears in a log: Aug 16 09:30:56 kernel: [32359.112029] usb 1-2: reset high speed USB device using ehci_hcd and address 2 Aug 16 09:31:59 kernel: [32422.112035] usb 1-2: reset high speed USB device using ehci_hcd and address 2 Aug 16 09:33:00 kernel: [32483.112029] usb 1-2: reset high speed USB device using ehci_hcd and address 2 And then it is followed by few kernel dumps, which I think, are not good: Aug 16 09:33:40 kernel: [32520.428027] INFO: task xfssyncd:1002 blocked for more than 120 seconds. Aug 16 09:33:40 kernel: [32520.462689] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 16 09:33:40 kernel: [32520.497422] xfssyncd D c3d84a60 0 1002 2 0x00000000 Aug 16 09:33:40 kernel: [32520.532117] f6c9aa80 00000046 c1132742 c3d84a60 00000286 c1418100 c1418100 00000000 Aug 16 09:33:40 kernel: [32520.566867] f6c9ac3c c2808100 00000000 f653b18b 00001d76 00000001 f6c9aa80 c3c3f0e0 Aug 16 09:33:40 kernel: [32520.601343] 08e59242 f6c9ac3c 2e41392b 00000000 08e59242 00000000 c3f7fb48 0067385a Aug 16 09:33:40 kernel: [32520.635533] Call Trace: Aug 16 09:33:40 kernel: [32520.668991] [<c1132742>] ? cfq_set_request+0x0/0x290 Aug 16 09:33:40 kernel: [32520.702804] [<c126b532>] ? io_schedule+0x5f/0x98 Aug 16 09:33:40 kernel: [32520.736555] [<c1128be0>] ? get_request_wait+0xcb/0x146 Aug 16 09:33:40 kernel: [32520.770360] [<c10437ba>] ? autoremove_wake_function+0x0/0x2d Aug 16 09:33:40 kernel: [32520.804110] [<c112907c>] ? __make_request+0x2cc/0x3d9 Aug 16 09:33:40 kernel: [32520.837713] [<c1128230>] ? blk_peek_request+0x135/0x143 Aug 16 09:33:40 kernel: [32520.871265] [<f8582987>] ? scsi_dispatch_cmd+0x185/0x1e5 [scsi_mod] Aug 16 09:33:40 kernel: [32520.904407] [<c1127cf1>] ? generic_make_request+0x266/0x2b4 Aug 16 09:33:40 kernel: [32520.937007] [<c10cf821>] ? bvec_alloc_bs+0x95/0xaf Aug 16 09:33:40 kernel: [32520.969033] [<c1127dfb>] ? submit_bio+0xbc/0xd6 Aug 16 09:33:40 kernel: [32521.000485] [<c10cffd1>] ? bio_add_page+0x28/0x2e Aug 16 09:33:40 kernel: [32521.031403] [<f8918d38>] ? _xfs_buf_ioapply+0x206/0x22b [xfs] Aug 16 09:33:40 kernel: [32521.061888] [<f89197bd>] ? xfs_buf_iorequest+0x38/0x60 [xfs] Aug 16 09:33:40 kernel: [32521.091845] [<f8907230>] ? xlog_bdstrat_cb+0x16/0x3d [xfs] Aug 16 09:33:40 kernel: [32521.121222] [<f8905781>] ? XFS_bwrite+0x32/0x64 [xfs] Aug 16 09:33:40 kernel: [32521.150007] [<f89059be>] ? xlog_sync+0x20b/0x311 [xfs] Aug 16 09:33:40 kernel: [32521.178214] [<f89112fc>] ? xfs_trans_ail_tail+0x12/0x27 [xfs] Aug 16 09:33:40 kernel: [32521.205914] [<f8906261>] ? xlog_state_sync_all+0xa2/0x141 [xfs] Aug 16 09:33:40 kernel: [32521.233074] [<f8906611>] ? _xfs_log_force+0x51/0x68 [xfs] Aug 16 09:33:40 kernel: [32521.259664] [<c103abaf>] ? process_timeout+0x0/0x5 Aug 16 09:33:40 kernel: [32521.285662] [<f8906636>] ? xfs_log_force+0xe/0x27 [xfs] Aug 16 09:33:40 kernel: [32521.311171] [<f89202df>] ? xfs_sync_worker+0x17/0x5c [xfs] Aug 16 09:33:40 kernel: [32521.336117] [<f891fbb7>] ? xfssyncd+0x134/0x17d [xfs] Aug 16 09:33:40 kernel: [32521.360498] [<f891fa83>] ? xfssyncd+0x0/0x17d [xfs] Aug 16 09:33:40 kernel: [32521.384211] [<c1043588>] ? kthread+0x61/0x66 Aug 16 09:33:40 kernel: [32521.407890] [<c1043527>] ? kthread+0x0/0x66 Aug 16 09:33:40 kernel: [32521.430876] [<c1003d47>] ? kernel_thread_helper+0x7/0x10 Aug 16 09:33:40 kernel: [32521.453394] INFO: task flush-8:16:12945 blocked for more than 120 seconds. Aug 16 09:33:40 kernel: [32521.476116] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 16 09:33:40 kernel: [32521.498579] flush-8:16 D 00000000 0 12945 2 0x00000000 Aug 16 09:33:40 kernel: [32521.520649] f4e4d540 00000046 e412e940 00000000 00000002 c1418100 c1418100 c14136ac Aug 16 09:33:40 kernel: [32521.542426] f4e4d6fc c2808100 00000000 00000000 000008b4 00000001 f4e4d540 c3c3f0e0 Aug 16 09:33:40 kernel: [32521.563745] 02e905a8 f4e4d6fc 007a5399 00000000 02e905a8 00000000 f4e2db48 00670b98 Aug 16 09:33:40 kernel: [32521.585077] Call Trace: Aug 16 09:33:40 kernel: [32521.605790] [<c126b532>] ? io_schedule+0x5f/0x98 Aug 16 09:33:40 kernel: [32521.626184] [<c1128be0>] ? get_request_wait+0xcb/0x146 Aug 16 09:33:40 kernel: [32521.646133] [<c10437ba>] ? autoremove_wake_function+0x0/0x2d Aug 16 09:33:40 kernel: [32521.665659] [<c112907c>] ? __make_request+0x2cc/0x3d9 Aug 16 09:33:40 kernel: [32521.684716] [<f891796e>] ? xfs_convert_page+0x30a/0x331 [xfs] Aug 16 09:33:40 kernel: [32521.703366] [<c1127cf1>] ? generic_make_request+0x266/0x2b4 Aug 16 09:33:40 kernel: [32521.721644] [<c10cf821>] ? bvec_alloc_bs+0x95/0xaf Aug 16 09:33:40 kernel: [32521.739465] [<c1127dfb>] ? submit_bio+0xbc/0xd6 Aug 16 09:33:40 kernel: [32521.756896] [<c10cfa45>] ? bio_alloc_bioset+0x7b/0xba Aug 16 09:33:40 kernel: [32521.774046] [<f8917af0>] ? xfs_submit_ioend_bio+0x3b/0x44 [xfs] Aug 16 09:33:40 kernel: [32521.790694] [<f8917ba3>] ? xfs_submit_ioend+0xaa/0xc4 [xfs] Aug 16 09:33:40 kernel: [32521.806736] [<f891817d>] ? xfs_page_state_convert+0x5c0/0x61c [xfs] Aug 16 09:33:40 kernel: [32521.822859] [<c113705b>] ? __lookup_tag+0x8e/0xee Aug 16 09:33:40 kernel: [32521.838958] [<f891840d>] ? xfs_vm_writepage+0x91/0xc4 [xfs] Aug 16 09:33:40 kernel: [32521.855039] [<c108bbcc>] ? __writepage+0x8/0x22 Aug 16 09:33:40 kernel: [32521.871067] [<c108c17b>] ? write_cache_pages+0x1af/0x29f Aug 16 09:33:40 kernel: [32521.886616] [<c108bbc4>] ? __writepage+0x0/0x22 Aug 16 09:33:40 kernel: [32521.901593] [<c108c285>] ? generic_writepages+0x1a/0x21 Aug 16 09:33:40 kernel: [32521.916455] [<f8918338>] ? xfs_vm_writepages+0x0/0x38 [xfs] Aug 16 09:33:40 kernel: [32521.931484] [<c108c2a5>] ? do_writepages+0x19/0x25 Aug 16 09:33:40 kernel: [32521.946648] [<c10c80d9>] ? writeback_single_inode+0xc7/0x273 Aug 16 09:33:40 kernel: [32521.961675] [<c10c8c44>] ? writeback_inodes_wb+0x3dd/0x49c Aug 16 09:33:40 kernel: [32521.976831] [<c10c8e18>] ? wb_writeback+0x115/0x178 Aug 16 09:33:40 kernel: [32521.991778] [<c10c901f>] ? wb_do_writeback+0x121/0x131 Aug 16 09:33:40 kernel: [32522.006538] [<c103abaf>] ? process_timeout+0x0/0x5 Aug 16 09:33:40 kernel: [32522.021091] [<c10c9050>] ? bdi_writeback_task+0x21/0x89 Aug 16 09:33:40 kernel: [32522.035493] [<c10979e5>] ? bdi_start_fn+0x59/0xa4 Aug 16 09:33:40 kernel: [32522.049765] [<c109798c>] ? bdi_start_fn+0x0/0xa4 Aug 16 09:33:40 kernel: [32522.063792] [<c1043588>] ? kthread+0x61/0x66 Aug 16 09:33:40 kernel: [32522.077612] [<c1043527>] ? kthread+0x0/0x66 Aug 16 09:33:40 kernel: [32522.091260] [<c1003d47>] ? kernel_thread_helper+0x7/0x10 Aug 16 09:33:40 kernel: [32522.104966] INFO: task smartctl:13098 blocked for more than 120 seconds. Aug 16 09:33:40 kernel: [32522.118883] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 16 09:33:40 kernel: [32522.133012] smartctl D 00000020 0 13098 13097 0x00000000 Aug 16 09:33:40 kernel: [32522.147221] e50b9540 00000086 c11d28a8 00000020 00000770 c1418100 c1418100 c14136ac Aug 16 09:33:40 kernel: [32522.161720] e50b96fc c2808100 00000000 e53e8800 00000000 00000020 c3cec000 c13886c0 Aug 16 09:33:40 kernel: [32522.176217] f99dab68 e50b96fc 007a4f1e 00000001 c4082f24 c4082ed8 00000001 c3c3f0e0 Aug 16 09:33:40 kernel: [32522.190737] Call Trace: Aug 16 09:33:40 kernel: [32522.205038] [<c11d28a8>] ? __netdev_alloc_skb+0x14/0x2d Aug 16 09:33:40 kernel: [32522.219605] [<c126b799>] ? schedule_timeout+0x20/0xb0 Aug 16 09:33:40 kernel: [32522.234144] [<c112820d>] ? blk_peek_request+0x112/0x143 Aug 16 09:33:40 kernel: [32522.248649] [<f85873b6>] ? scsi_request_fn+0x3c1/0x47a [scsi_mod] Aug 16 09:33:40 kernel: [32522.263233] [<c103aba8>] ? del_timer+0x55/0x5c Aug 16 09:33:40 kernel: [32522.277773] [<c126b6a2>] ? wait_for_common+0xa4/0x100 Aug 16 09:33:40 kernel: [32522.292342] [<c102cd8d>] ? default_wake_function+0x0/0x8 Aug 16 09:33:40 kernel: [32522.306958] [<c112b3d1>] ? blk_execute_rq+0x8b/0xb2 Aug 16 09:33:40 kernel: [32522.321569] [<c112b2ac>] ? blk_end_sync_rq+0x0/0x23 Aug 16 09:33:40 kernel: [32522.336070] [<c112b58b>] ? blk_recount_segments+0x13/0x20 Aug 16 09:33:40 kernel: [32522.350583] [<c1127307>] ? blk_rq_bio_prep+0x44/0x74 Aug 16 09:33:40 kernel: [32522.365059] [<c112b0b2>] ? blk_rq_map_kern+0xc5/0xee Aug 16 09:33:40 kernel: [32522.379439] [<c112e2a5>] ? sg_scsi_ioctl+0x221/0x2aa Aug 16 09:33:40 kernel: [32522.393801] [<c112e672>] ? scsi_cmd_ioctl+0x344/0x39a Aug 16 09:33:40 kernel: [32522.408140] [<c1024c87>] ? update_curr+0x106/0x1b3 Aug 16 09:33:40 kernel: [32522.422566] [<c1024c87>] ? update_curr+0x106/0x1b3 Aug 16 09:33:40 kernel: [32522.436832] [<f87676aa>] ? sd_ioctl+0x90/0xb5 [sd_mod] Aug 16 09:33:40 kernel: [32522.451228] [<c112c35f>] ? __blkdev_driver_ioctl+0x53/0x63 Aug 16 09:33:40 kernel: [32522.465689] [<c112cbbf>] ? blkdev_ioctl+0x850/0x891 Aug 16 09:33:40 kernel: [32522.479982] [<c1020474>] ? __wake_up_common+0x34/0x59 Aug 16 09:33:40 kernel: [32522.494138] [<c10244cd>] ? complete+0x28/0x36 Aug 16 09:33:40 kernel: [32522.507986] [<c1086c64>] ? find_get_page+0x1f/0x81 Aug 16 09:33:40 kernel: [32522.521671] [<c10abed5>] ? add_partial+0xe/0x40 Aug 16 09:33:40 kernel: [32522.535285] [<c1086e68>] ? lock_page+0x8/0x1d Aug 16 09:33:40 kernel: [32522.548797] [<c1087432>] ? filemap_fault+0xb5/0x2e6 Aug 16 09:33:40 kernel: [32522.562141] [<c109941c>] ? __do_fault+0x381/0x3b1 Aug 16 09:33:40 kernel: [32522.575441] [<c10d0c30>] ? block_ioctl+0x27/0x2c Aug 16 09:33:40 kernel: [32522.588708] [<c10d0c09>] ? block_ioctl+0x0/0x2c Aug 16 09:33:40 kernel: [32522.601858] [<c10bcd78>] ? vfs_ioctl+0x1c/0x5f Aug 16 09:33:40 kernel: [32522.614917] [<c10bd30c>] ? do_vfs_ioctl+0x4aa/0x4e5 Aug 16 09:33:40 kernel: [32522.627961] [<c10350db>] ? __do_softirq+0x115/0x151 Aug 16 09:33:40 kernel: [32522.640901] [<c126e270>] ? do_page_fault+0x2f1/0x307 Aug 16 09:33:40 kernel: [32522.653803] [<c10bd388>] ? sys_ioctl+0x41/0x58 Aug 16 09:33:40 kernel: [32522.666674] [<c10030fb>] ? sysenter_do_call+0x12/0x28 Then again few messages reset high speed USB device using ehci_hcd and address 2. I have browsed and read similar error reports here and there and I tried: I have upgraded the kernel from v2.6.26-2 to 2.6.32-5, which has not solved the problem. They say, this might a cable problem. I have tried to replace the USB-to-miniUSB cable (that connects external drive with computer) with another one. No changes. Somebody suggests to try another USB port. I have only 4 external USB ports, tried another one with no success. They say to try uhci_hcd. I have unmounted the device, unloaded ehci_hcd and mounted again. The difference was that now in log I get reset full speed USB device using uhci_hcd and address 2 and similar kernel dumps after a while. They say to echo 128 > /sys/block/sdb/device/max_sectors. I tried it with ehci_hcd with no success (note: I have issued this command after the drive was mounted but before using it actively). I have lauched smartmond and checking periodically the output of smartctl: drive temperature is OK, number of bad sectors and uncorrectable errors is 0. Nothing suspicious is reported by S.M.A.R.T. except maybe the following: Aug 16 12:40:12 kernel: [43715.314566] program smartctl is using a deprecated SCSI ioctl, please convert it to SG_IO Aug 16 12:40:13 kernel: [43715.705622] program smartctl is using a deprecated SCSI ioctl, please convert it to SG_IO Of course, I have not tried all combinations of above. But unfortunately, I am run out of cardinal ideas. If anybody can advice something specific about the problem, you are very welcome.

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• ubuntu bind9 AppArmor read permission denied (chroot jail)

  - by Richard Whitman

  I am trying to run bind9 with chroot jail. I followed the steps mentioned at : http://www.howtoforge.com/debian_bind9_master_slave_system I am getting the following errors in my syslog: Jul 27 16:53:49 conf002 named[3988]: starting BIND 9.7.3 -u bind -t /var/lib/named Jul 27 16:53:49 conf002 named[3988]: built with '--prefix=/usr' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sysconfdir=/etc/bind' '--localstatedir=/var' '--enable-threads' '--enable-largefile' '--with-libtool' '--enable-shared' '--enable-static' '--with-openssl=/usr' '--with-gssapi=/usr' '--with-gnu-ld' '--with-dlz-postgres=no' '--with-dlz-mysql=no' '--with-dlz-bdb=yes' '--with-dlz-filesystem=yes' '--with-dlz-ldap=yes' '--with-dlz-stub=yes' '--with-geoip=/usr' '--enable-ipv6' 'CFLAGS=-fno-strict-aliasing -DDIG_SIGCHASE -O2' 'LDFLAGS=-Wl,-Bsymbolic-functions' 'CPPFLAGS=' Jul 27 16:53:49 conf002 named[3988]: adjusted limit on open files from 4096 to 1048576 Jul 27 16:53:49 conf002 named[3988]: found 4 CPUs, using 4 worker threads Jul 27 16:53:49 conf002 named[3988]: using up to 4096 sockets Jul 27 16:53:49 conf002 named[3988]: loading configuration from '/etc/bind/named.conf' Jul 27 16:53:49 conf002 named[3988]: none:0: open: /etc/bind/named.conf: permission denied Jul 27 16:53:49 conf002 named[3988]: loading configuration: permission denied Jul 27 16:53:49 conf002 named[3988]: exiting (due to fatal error) Jul 27 16:53:49 conf002 kernel: [74323.514875] type=1400 audit(1343433229.352:108): apparmor="DENIED" operation="open" parent=3987 profile="/usr/sbin/named" name="/var/lib/named/etc/bind/named.conf" pid=3992 comm="named" requested_mask="r" denied_mask="r" fsuid=103 ouid=103 Looks like the process can not read the file /var/lib/named/etc/bind/named.conf. I have made sure that the owner of this file is user bind, and it has the read/write access to it: root@test:/var/lib/named/etc/bind# ls -atl total 64 drwxr-xr-x 3 bind bind 4096 2012-07-27 16:35 .. drwxrwsrwx 2 bind bind 4096 2012-07-27 15:26 zones drwxr-sr-x 3 bind bind 4096 2012-07-26 21:36 . -rw-r--r-- 1 bind bind 666 2012-07-26 21:33 named.conf.options -rw-r--r-- 1 bind bind 514 2012-07-26 21:18 named.conf.local -rw-r----- 1 bind bind 77 2012-07-25 00:25 rndc.key -rw-r--r-- 1 bind bind 2544 2011-07-14 06:31 bind.keys -rw-r--r-- 1 bind bind 237 2011-07-14 06:31 db.0 -rw-r--r-- 1 bind bind 271 2011-07-14 06:31 db.127 -rw-r--r-- 1 bind bind 237 2011-07-14 06:31 db.255 -rw-r--r-- 1 bind bind 353 2011-07-14 06:31 db.empty -rw-r--r-- 1 bind bind 270 2011-07-14 06:31 db.local -rw-r--r-- 1 bind bind 2994 2011-07-14 06:31 db.root -rw-r--r-- 1 bind bind 463 2011-07-14 06:31 named.conf -rw-r--r-- 1 bind bind 490 2011-07-14 06:31 named.conf.default-zones -rw-r--r-- 1 bind bind 1317 2011-07-14 06:31 zones.rfc1918 What could be wrong here?

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• Unable to mount XP share using fs-cifs from Linux

  - by MetalSearGolid

  I have a head unit that runs Linux that is connected to my PC via an Ethernet cable. I have a Windows XP share on this PC that the head unit needs to be able to mount, however, when mounting using the following command, it fails. Here is the command that fails, along with the verbose output: # fs-cifs -vvvvvvvvv -l //CUMBRIA-XP:192.168.1.2:/hnet /mnt/net cifs[2158679-1]: starting... cifs[2158679-1]: user is to input both name & passwd. cifs[2158679-1]: server [192.168.1.2] share [hnet] prefix [/mnt/net] user [nu ll] passwd [null] Welcome: 192.168.1.2(:/hnet) -> /mnt/net Username:headunit cifs[2158679-1]: user name: headunit length 8 cifs[2158679-1]: new server Password: cifs[2158679-1]: establishing connection to (192.168.1.2)CUMBRIA-XP cifs[2158679-1]: session request: 192.168.1.2:CUMBRIA-XP -> localhost cifs[2158679-1]: negotiating smb dialect cifs[2158679-1]: skey(idx=2): 00000000, challenge:(8), 6137bfa2 f2d7803b cifs[2158679-1]: negotiation: success with dialect=2 cifs[2158679-1]: logging headunit on 192.168.1.2 cifs[2158679-1]: new packet cifs[2158679-1]: returning: mid 0 status= 0 cifs[2158679-1]: smb_logon successful: dialect 2 enpass 1 cifs[2158679-1]: mounting 192.168.1.2:/hnet cifs[2158679-1]: returning: mid 1 status= 13 cifs[2158679-1]: smb_mount: Bad file descriptor cifs[2158679-1]: try upper case share. cifs[2158679-1]: session request: 192.168.1.2:CUMBRIA-XP -> localhost cifs[2158679-1]: negotiating smb dialect cifs[2158679-1]: skey(idx=2): 00000000, challenge:(8), 2d3e910f e3e148c4 cifs[2158679-1]: negotiation: success with dialect=2 cifs[2158679-1]: logging headunit on 192.168.1.2 cifs[2158679-1]: returning: mid 2 status= 0 cifs[2158679-1]: smb_logon successful: dialect 2 enpass 1 cifs[2158679-1]: mounting 192.168.1.2:/HNET cifs[2158679-1]: returning: mid 3 status= 13 cifs[2158679-1]: smb_mount: Bad file descriptor cifs[2158679-1]: mount failed. cifs[2158679-1]: io_mount: smb_connection failed: Bad file descriptor io_mount: Bad file descriptor cifs[2158679-1]: user is to input both name & passwd. fs-cifs: missing arguments, or all mount attempts failed. run "use fs-cifs" or "fs-cifs -h" for help. Any ideas? It is worthy to note that /mnt does not exist on the filesystem, but I was told by the company who gave us these units that fs-cifs should automatically create the /mnt/net folders if they don't exist.

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• IRP_MJ_WRITE latency up to 15 seconds

  - by racitup

  We have written an application that performs small (22kB) writes to multiple files at once (one thread performing asynchronous queued writes to multiple locations on behalf of other threads) on the same local volume (RAID1). 99.9% of the writes are low-latency but occasionally (maybe every minute or two) we get one or two huge latency writes (I have seen 10 seconds and above) without any real explanation. Platform: Win2003 Server with NTFS. Monitoring: Sysinternals Process Monitor (see link below) and our own application logging. We have tried multiple things to try and solve this that have been gleaned from a few websites, e.g.: Making the first part of file names unique to aid 8.3 name generation Writing files to multiple directories Changing Intel Disk Write Caching Windows File/Printer Sharing Minimize memory used Balance Maximize data throughput for file sharing Maximize data throughput for network applications System-Advanced-Performance-Advanced NtfsDisableLastAccessUpdate - use fsutil behavior set disablelastaccess 1 disable 8.3 name generation - use "fsutil behavior set disable8dot3 1" + restart Enable a large size file system cache Disable paging of the kernel code IO Page Lock Limit Turn Off (or On) the Indexing Service But nothing seems to make much difference. There's a whole host of things we haven't tried yet but we wondered if anyone had come across the same problem, a reason and a solution (programmatic or not)? We can reproduce the problem using IOMeter and a simple setup: Start IOMeter and remove all but the first worker thread in 'Topology' using the disconnect button. Select the Worker thread and put a cross in the box next to the disk you want to use in the Disk Targets tab and put '2000000' in Maximum Disk Size (NOTE: must have at least 1GB free space; sector size is 512 bytes) Next create a new access specification and add it to the worker thread: Transfer Request Size = 22kB 100% Sequential Percent of Access Spec = 100% Percent Read/Write = 100% Write Change Results Display Update Frequency to 5 seconds, Test Setup Run Time to 20 seconds and both 'Number of Workers to Spawn Automatically' settings to zero. Select the Worker Thread in the Topology panel and hit the Duplicate Worker button 59 times to create 60 threads with identical settings. Hit the 'Go' button (green flag) and monitor the Results tab. The 'Maximum I/O Response Time (ms)' always hits at least 3500 on our machine. Our machine isn't exactly slow (Xeon 8 core rack server with 4GB and onboard RAID). I'd be interested to see what other people get. We have a feeling it might be something to do with the NTFS filesystem (ours is currently 75% full of fragmented files) and we are going to try a few things around this principle. But it is also related to disk performance since we don't see it on a RAMDisk and it's not as severe on a RAID10 array. Any help is much appreciated. Richard Right-click and select 'Open Link in New Tab': ProcMon Result

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• Bidirectional real-time sync of large file tree between two distant linux servers

  - by dlo

  By large file tree I mean about 200k files, and growing all the time. A relatively small number of files are being changed in any given hour though. By bidirectional I mean that changes may occur on either server and need to be pushed to the other, so rsync doesn't seem appropriate. By distant I mean that the servers are both in data centers, but geographically remote from each other. Currently there are only 2 servers, but that may expand over time. By real-time, it's ok for there to be a little latency between syncing, but running a cron every 1-2 minutes doesn't seem right, since a very small fraction of files may change in any given hour, let alone minute. EDIT: This is running on VPS's so I might be limited on the kinds of kernel-level stuff I can do. Also, the VPS's are not resource-rich, so I'd shy away from solutions that require lots of ram (like Gluster?). What's the best / most "accepted" approach to get this done? This seems like it would be a common need, but I haven't been able to find a generally accepted approach yet, which was surprising. (I'm seeking the safety of the masses. :) I've come across lsyncd to trigger a sync at the filesystem change level. That seems clever though not super common, and I'm a bit confused by the various lsyncd approaches. There's just using lsyncd with rsync, but it seems this could be fragile for bidirectionality since rsync doesn't have a notion of memory (eg- to know whether a deleted file on A should be deleted on B or whether it's a new file on B that should be copied to A). lipsync appears to be just a lsyncd+rsync implementation, right? Then there's using lsyncd with csync2, like this: http://www.axivo.com/community/threads/lightning-fast-synchronization-with-csync2-and-lsyncd.121/ ... I'm leaning towards this approach, but csync2 is a little quirky, though I did do a successful test of it. I'm mostly concerned that I haven't been able to find a lot of community confirmation of this method. People on here seem to like Unison a lot, but it seems that it is no longer under active development and it's not clear that it has an automatic trigger like lsyncd. I've seen Gluster mentioned, but maybe overkill for what I need? UPDATE: fyi- I ended up going with the original solution I mentioned: lsyncd+csync2. It seems to work quite well, and I like the architectural approach of having the servers be very loosely joined, so that each server can operate indefinitely on its own regardless of the link quality between them.

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• How to create a Windows 7 installation usb media from linux ? (to install Windows 7) - Help need to know better method

  - by Abel Coto

  I have been reading some web pages and posts here and in other forums about how to create a Windows 7 installation Usb media (to install windows 7 using a usb) from linux. I asked in technet about this , and they give me general ideas about how to do it I personally am not very familiar with linux, but basicaly all that you need to do... in whatever way you do it is the following: Format a usb flash drive, either fat32 or ntfs create a partition that is large enough to host the windows installation (give or take 3GB for 64bit, aroudn 2.5gb for 32bit) and mark that partition as active/bootable. Since this can be done with windows, but just as well with a tool like gparted, you should be able to do the same in debian. Once you have created that partition, mount the iso that you download, and copy all files starting from the root, into the root of the usb flash drive. That's all there's to it. There is a method that i found in various places,that is almost the same that the man of technet has said. But,there is a step,that in that method is done,that i don't know if it is really necessary,or not. Not allways dd works.Basically, the missing step was to write a proper boot sector to the usb stick, which can be done from linux with ms-sys. This works with the Win7 retail version. Here is the complete rundown again: Install ms-sys Check what device your usb media is asigned - here we will assume it is /dev/sdb. Delete all partitions, create a new one taking up all the space, set type to NTFS, and set it bootable: *# cfdisk /dev/sdb* Create NTFS filesystem: *# mkfs.ntfs -f /dev/sdb1* Mount iso and usb media: *# mount -o loop win7.iso /mnt/iso # mount /dev/sdb1 /mnt/usb* Copy over all files: *# cp -r /mnt/iso/* /mnt/usb/* Write Windows 7 MBR on usb stick: *# ms-sys -7 /dev/sdb* ...and you're done. Shouldn't the usb work without doing the last step "# ms-sys -7 /dev/sdb" or to make the usb bootable , is a must , not only to mark the partition as bootable ? Would be better use rsync instead of cp -r ? All this steps should be done as root, i suppose , or if not , chmod to 664 and chown the directories where are mounted the usb and the iso, no ? But i suppose that the easier thing is to copy the data as root , and that this will not affect to the data. Has anyone tried this method or some similar like copying the iso with dd ?

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• Autoloading Development or Production configs (best practices)

  - by Xeoncross

  When programming sites you usually have one set of config files for the development environment and another set for the production server (or one file with both settings). I am assuming all projects should be handled by version control like git or svn. Manual file transfers (like FTP) is wrong on so many levels. How you enable/disable the correct settings (so that your system knows which ones to use) is a problem for me. Each system I work on just kind of jimmy-rigs a solution. Below are the 3 methods I know of and I am hoping that someone can submit a more elegant solutions. 1) File Based The system loads a folder structure based on the URL requested. /site.com /site.fakeTLD /lib index.php For example, if the url is http://site.com then the system loads the production config files located in the site.com folder. However, if I'm working on the site locally I visit http://site.fakeTLD to work on the local copy of the site. To setup this I edit my hosts file and add site.fakeTLD to point to my own computer (127.0.0.1/localhost) and then create a vhost in apache. So now I can work on the codebase locally and then push to the server without any trouble. The problem is that this is susceptible to a "host" injection attack. So someone loading site.com could set the host to site.fakeTLD and then the system would load my development config files instead of production. 2) Config Based The config files contain on section for development - and one for production. The problem is that each time you go to push your changes to the repo you have to edit the file to specify which set of config options should be used. $use = 'production'; //'development'; This leaves the repo open to human error should one of the developers forget to enable the right setting. 3) File System Check Based All the development machines have an extra empty file called "development.txt" or something. Each time the system loads it checks for this file - if found then it knows it is in development mode - if missing then it knows it is in production mode. Since the file is NEVER ADDED to the repo then it will never be pushed (and checked out) on the production machine. However, this just doesn't feel right and causes a slight slow down since all filesystem checks are slow.

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