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  • Permissions restoring from Time Machine - Finder copy vs "cp" copy

    - by Ben Challenor
    Note: this question was starting to sprawl so I rewrote it. I have a folder that I'm trying to restore from a Time Machine backup. Using cp -R works fine, but certain folders cannot be restored with either the Time Machine UI or Finder. Other users have reported similar errors and the cp -R workaround was suggested (e.g. Restoring from Time Machine - Permissions Error). But I wanted to understand: Why cp -R works when the Finder and the Time Machine UI do not. Whether I could prevent the errors by changing file permissions before the backup. There do indeed seem to be some permissions that Finder works with and some that it does not. I've narrowed the errors down to folders with the user ben (that's me) and the group wheel. Here's a simplified reproduction. I have four folders with the owner/group combinations I've seen so far: ben ~/Desktop/test $ ls -lea total 16 drwxr-xr-x 7 ben staff 238 27 Nov 14:31 . drwx------+ 17 ben staff 578 27 Nov 14:29 .. 0: group:everyone deny delete -rw-r--r--@ 1 ben staff 6148 27 Nov 14:31 .DS_Store drwxr-xr-x 3 ben staff 102 27 Nov 14:30 ben-staff drwxr-xr-x 3 ben wheel 102 27 Nov 14:30 ben-wheel drwxr-xr-x 3 root admin 102 27 Nov 14:31 root-admin drwxr-xr-x 3 root wheel 102 27 Nov 14:31 root-wheel Each contains a single file called file with the same owner/group: ben ~/Desktop/test $ cd ben-staff ben ~/Desktop/test/ben-staff $ ls -lea total 0 drwxr-xr-x 3 ben staff 102 27 Nov 14:30 . drwxr-xr-x 7 ben staff 238 27 Nov 14:31 .. -rw-r--r-- 1 ben staff 0 27 Nov 14:30 file In the backup, they look like this: ben /Volumes/Deimos/Backups.backupdb/Ben’s MacBook Air/Latest/Macintosh HD/Users/ben/Desktop/test $ ls -leA total 16 -rw-r--r--@ 1 ben staff 6148 27 Nov 14:34 .DS_Store 0: group:everyone deny write,delete,append,writeattr,writeextattr,chown drwxr-xr-x@ 3 ben staff 102 27 Nov 14:51 ben-staff 0: group:everyone deny add_file,delete,add_subdirectory,delete_child,writeattr,writeextattr,chown drwxr-xr-x@ 3 ben wheel 102 27 Nov 14:51 ben-wheel 0: group:everyone deny add_file,delete,add_subdirectory,delete_child,writeattr,writeextattr,chown drwxr-xr-x@ 3 root admin 102 27 Nov 14:52 root-admin 0: group:everyone deny add_file,delete,add_subdirectory,delete_child,writeattr,writeextattr,chown drwxr-xr-x@ 3 root wheel 102 27 Nov 14:52 root-wheel 0: group:everyone deny add_file,delete,add_subdirectory,delete_child,writeattr,writeextattr,chown Of these, ben-staff can be restored with Finder without errors. root-wheel and root-admin ask for my password and then restore without errors. But ben-wheel does not prompt for my password and gives the error: The operation can’t be completed because you don’t have permission to access “file”. Interestingly, I can restore the file from this folder by dragging it directly to my local drive (instead of dragging its parent folder), but when I do so its permissions are changed to ben/staff. Here are the permissions after the restore for the three folders that worked correctly, and the file from ben-wheel that was changed to ben/staff. ben ~/Desktop/test-restore $ ls -leA total 16 -rw-r--r--@ 1 ben staff 6148 27 Nov 14:46 .DS_Store drwxr-xr-x 3 ben staff 102 27 Nov 14:30 ben-staff -rw-r--r-- 1 ben staff 0 27 Nov 14:30 file drwxr-xr-x 3 root admin 102 27 Nov 14:31 root-admin drwxr-xr-x 3 root wheel 102 27 Nov 14:31 root-wheel Can anyone explain this behaviour? Why do Finder and the Time Machine UI break with the ben / wheel permissions? And why does cp -R work (even without sudo)?

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  • Best-selling Author on Servlets and JSP, Marty Hall, to Keynote at GIDS 2010

    Hey Guys,Author of More Servlets and JSP, Marty Hall is coming to Bangalore this April to speak on Choosing an Ajax/JavaScript Toolkit: A Comparison of the Most Popular JavaScript Libraries, Pure Java Ajax: An Overview of GWT 2.0, Integrated Ajax Support in JSF 2.0 and Ajax Support in the Prototype JavaScript Library. You can get more information on developersummit dot com...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Book Review: Getting Started With Window 8 Apps By Ben Dewey

    - by Tim Murphy
    When O’Reilly gave me an opportunity to review this book I was excited.  It gave me a reason to finally put some time into this new platform and what developers will need to learn in order to be successful. This book by Ben Dewey is only 92 pages long, so if you were looking for an in-depth treatment of Windows 8 development you will need supplemental materials.  It is also due for an update from the perspective of recent changes made by Microsoft prior to the final release of the OS and tools.  This causes a few issues if you try to run the code samples because of namespace changes. I was encouraged by the fact that the author didn’t do the typical “hello world” app.  He uses a lot of pattern based development techniques and hits many of the main topics including: Application lifecycle Charms integration Tiles Sensors The lifecycle is critical for anyone who hasn’t done mobile development before.  Limited resources on these devices mean that the OS can suspend or kill your app altogether if it decides it needs to.  He covers tombstoning which is the key to Windows 8 and Windows Phone lifecycle management. He also dedicates a chapter to marketing and distributing the application you build.  From my experience with Windows Phone development this is crucial information.  You need to know how to test your application so that it is going to pass certification and present your app so that it is going to get noticed amongst thousands of other apps. The main things that I wish had been in the book explanations of more of the common controls and more complete explanation of patterns that were implemented. In the end this book is a good foundation getting exposure to the concepts that underlie this new version of the Windows platform and how it effects developers.  It isn’t a book that I would suggest for someone just getting into development with no understanding of pattern based development. del.icio.us Tags: Windows 8,O'Reilly,Ben Dewey,Book Review,Review

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  • Itzik Ben-Gan is in town

    - by Dave Ballantyne
    Not that you would know it from the page below,  but Itzik Ben-Gan is back in London to do a 5 day training course, start 03october.  http://www.qa.com/training-courses/technical-it-training/microsoft/microsoft-sql-server/microsoft-sql-server-2008-and-r2/advanced-t-sql-querying,-programming-and-tuning-for-sql-server-2005--2008Why QA are not screaming this from the rafters, I will never be able to fathom.  Its kind of like going for a physics course and finding that Steven Hawking is taking the class. Training budgets are tight at the moment and £2500+ is a fair amount to pay but ,as the saying goes,  but if you pay peanuts you get monkeys. Looks like you will need to be quick , the site is saying "Fewer than 5 places available".

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  • The Oracle VM Hall of Fame

    - by Kristin Rose
    “Take me out to the ball game, take me out to the crowd. Buy me a new Oracle VM, I want my competition to be history!”...Yes, baseball is in full swing, and as we make our way to the closing of the quarter, Oracle is ready to “knock it out of the park” with its newly updated release of Oracle VM 3.1. This home run of a server virtualization solution will let you deploy software faster, as it intelligently manages your entire infrastructure, from application to disk. As if that wasn’t enough, the competition can’t even get on base! Have a look at the final score below: Partners will be hitting grand slams left and right because management tools, application templates and single source support, have all teamed up to create one heck of a curve ball for the competition, but more importantly, an absolute first draft pick for our partners. With no license cost and an affordable enterprise support cost, crowds have gathered to see this ‘All Star’ play some hard ball. Watch as Jeff Doolan, Sr. Director of Linux and Virtualization Channel Sales at Oracle, goes into more depth on how Oracle VM is a real game changer and eliminates the competition.Adding to the line-up are two key components of Oracle VM 3.1: Enhanced Ease-of-use: The new GUI design is engineered for faster execution of workflow and to maximize ease of use and reduce deployment time. Administrators have more time to spend at the ball park or focus on the business.New Oracle VM Templates: such as the Oracle E-Business Suite 12.1.3; Oracle PeopleSoft FSCM 9.1; Oracle Enterprise Manager 12c; Oracle Linux 5.8; Oracle Linux 6.1; Oracle Solaris 11 – which add to the existing 100+ existing templates that are ready for download. Oracle VM Templates are pre-configured as an entire stack including OS and application fully tested, production ready and certified from Oracle.For more information on Oracle newest player, Oracle VM 3.1, read this press release or visit our technology information page. Batter Up,The OPN Communications Team

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  • Responsive Web design d'Ethan Marcotte, critique par Ihèb BEN ROMDHANE

    Bonjour, Je vous propose la critique du Livre Responsive Web design de Ethan Marcotte. Citation: Encore un très bon ouvrage dans l'excellente collection A book Apart, dans lequel Ethan Marcotte aborde, de manière très claire et argumentée, les différents aspects qui mènent à la création d'une mise en page fluide et responsive. Les exemples présentés s'appuient sur le principe des grilles de m...

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  • Introducing Ben Barreth, Community Builder & Software Developer at GWB

    - by Staff of Geeks
    Please extend a warm welcome to Ben Barreth as the new community builder and full-time software developer at Geeks With Blogs. We've been wanting to add some cool features to the site but haven't had the opportunity until now. Adding Ben to the team should give us a big kick in the right direction. Ben has several years of .Net development experience and is heavily involved in the startup community in Kansas City, including the KC Startup Village as well as his own startup initiatives: Homes for Hackers and FreeIdeas.co. He loves working with people even more than coding and is excited to serve the GWB community in any way possible. Ben originally met Matt Watson as a beta tester for Stackify, the software company that gives developers the safe & secure access to troubleshoot in production. Jeff Julian and Matt are old friends and recently decided the site needed new ownership to carry it forward and build the enhancements it deserves. The site management transferred in October and Matt quickly began looking for a full-time community builder to lead the charge. Ben bumped into Matt once again at a Tech Cocktail event at the Boulevard Brewery where Stackify was presenting and an alliance was forged. Yes, the beer really IS that good! Which brings us to the biggest question of all: Where do you want Geeks with Blogs to go next? As a contributor to the GWB community, now is your chance to be heard! What are we missing? Features on our radar: New templates Add a code "formatter" to posts Add categories to blog feeds Re-skin the site and redesign the logo Feel free to contact Ben with further questions and ideas below. We need your help! @BenBarreth [email protected] Cell: 816-332-9770 www.linkedin.com/in/benbarreth

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  • hall.dll errors

    - by Robert Elliott
    I am getting frequent BSoDs, mostly with hall.dll errors. I have Dell Inspiron laptop running Windows 7 SP1. The following file, werfault, is shown below. Can anyone help me work out what is wrong? Version=1 EventType=BlueScreen EventTime=129987824768810026 ReportType=4 Consent=1 ReportIdentifier=1c3e1c58-3b30-11e2-9074-002219f61870 IntegratorReportIdentifier=113012-32557-01 Response.type=4 DynamicSig[1].Name=OS Version DynamicSig[1].Value=6.1.7601.2.1.0.768.3 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 UI[2]=C:\Windows\system32\wer.dll UI[3]=Windows has recovered from an unexpected shutdown UI[4]=Windows can check online for a solution to the problem. UI[5]=&Check for solution UI[6]=&Check later UI[7]=Cancel UI[8]=Windows has recovered from an unexpected shutdown UI[9]=A problem caused Windows to stop working correctly. Windows will notify you if a solution is available. UI[10]=Close Sec[0].Key=BCCode Sec[0].Value=a Sec[1].Key=BCP1 Sec[1].Value=0000000000000000 Sec[2].Key=BCP2 Sec[2].Value=0000000000000002 Sec[3].Key=BCP3 Sec[3].Value=0000000000000000 Sec[4].Key=BCP4 Sec[4].Value=FFFFF80002C0E477 Sec[5].Key=OS Version Sec[5].Value=6_1_7601 Sec[6].Key=Service Pack Sec[6].Value=1_0 Sec[7].Key=Product Sec[7].Value=768_1 File[0].CabName=113012-32557-01.dmp File[0].Path=113012-32557-01.dmp File[0].Flags=589826 File[0].Type=2 File[0].Original.Path=C:\Windows\Minidump\113012-32557-01.dmp File[1].CabName=sysdata.xml File[1].Path=WER-75941-0.sysdata.xml File[1].Flags=589826 File[1].Type=5 File[1].Original.Path=C:\Users\Robert\AppData\Local\Temp\WER-75941-0.sysdata.xml File[2].CabName=Report.cab File[2].Path=Report.cab File[2].Flags=196608 File[2].Type=7 File[2].Original.Path=Report.cab FriendlyEventName=Shut down unexpectedly ConsentKey=BlueScreen AppName=Windows AppPath=C:\Windows\System32\WerFault.exe *********From the minidump file**** RAX = fffff88002f22150 RBX = fffffa80074141f0 RCX = 000000000000000a RDX = 0000000000000000 RSI = fffffa8007278180 RDI = 0000000000000001 R9 = 0000000000000000 R10 = fffff80002c0e477 R11 = 0000000000000000 R12 = fffffa800523e7a0 R13 = 0000000000001000 R14 = 0000000000000028 R15 = fffffa80074141f0 RBP = fffff88002f22210 RIP = fffff80002cd3fc0 RSP = fffff88002f22048 SS = 0000 GS = 002b FS = 0053 ES = 002b DS = 002b CS = 0010 Flags = 00200286 fffff800`02e99ac0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ad0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ae0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99af0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b30 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00 00 ................ fffff800`02e99b40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b50 00 00 00 00 00 00 00 00 00 00 00 00 ............ fffff800`02e81928 00 00 00 00 .... fffff800`02e81924 00 00 00 00 .... fffff800`02e0a880 37 36 30 31 2E 31 37 39 34 34 2E 61 6D 64 36 34 7601.17944.amd64 fffff800`02e0a890 66 72 65 2E 77 69 6E 37 73 70 31 5F 67 64 72 2E fre.win7sp1_gdr. fffff800`02e0a8a0 31 32 30 38 33 30 2D 30 33 33 33 00 00 00 00 00 120830-0333..... fffff800`02e0a8b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a900 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a910 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a920 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a930 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a940 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a950 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a960 35 36 65 38 62 61 31 33 2D 37 30 32 39 2D 34 37 56e8ba13-7029-47 fffff800`02e0a970 32 38 2D 61 35 30 36 2D 32 64 64 62 34 61 30 63 28-a506-2ddb4a0c fffff800`02c0e000 C5 0F 85 79 02 00 00 8B 9C 24 90 00 00 00 E9 A5 ...y.....$...... fffff800`02c0e010 00 00 00 44 2B C3 45 33 C9 E8 5E 14 00 00 49 3B ...D+.E3..^...I; fffff800`02c0e020 C5 74 2B 44 8B 8C 24 90 00 00 00 48 8B C8 41 8D .t+D..$....H..A. fffff800`02c0e030 51 FF 41 3B D5 76 0D 44 8B C2 49 83 E8 01 48 8B Q.A;.v.D..I...H. fffff800`02c0e040 49 08 75 F6 48 89 79 08 41 03 D9 48 8B F8 3B DD I.u.H.y.A..H..;. fffff800`02c0e050 75 08 48 8B C7 E9 26 02 00 00 48 8B 96 98 00 00 u.H...&...H..... fffff800`02c0e060 00 48 8D 84 24 90 00 00 00 44 8B C5 48 89 44 24 .H..$....D..H.D$ fffff800`02c0e070 28 44 2B C3 45 33 C9 48 8B CE 44 88 6C 24 20 E8 (D+.E3.H..D.l$ . fffff800`02c0e080 CC 14 00 00 49 3B C5 74 2B 44 8B 8C 24 90 00 00 ....I;.t+D..$... fffff800`02c0e090 00 48 8B C8 41 8D 51 FF 41 3B D5 76 0D 44 8B C2 .H..A.Q.A;.v.D.. fffff800`02c0e0a0 49 83 E8 01 48 8B 49 08 75 F6 48 89 79 08 41 03 I...H.I.u.H.y.A. fffff800`02c0e0b0 D9 48 8B F8 3B DD 74 9A 44 38 AE 28 01 00 00 0F .H..;.t.D8.(.... fffff800`02c0e0c0 85 DF 00 00 00 48 8D 44 24 30 4C 8D 8C 24 A0 00 .....H.D$0L..$.. fffff800`02c0e0d0 00 00 4C 8D 84 24 A8 00 00 00 8B D5 48 8B CE 48 ..L..$......H..H fffff800`02c0e0e0 89 44 24 20 E8 F7 1F 00 00 8B F8 89 84 24 90 00 .D$ .........$.. fffff800`02c0e0f0 00 00 41 3B C5 0F 84 83 01 00 00 4C 8B A4 24 A8 ..A;.......L..$. fffff800`02c0e100 00 00 00 44 8B 84 24 A0 00 00 00 48 8B 8E 98 00 ...D..$....H.... fffff800`02c0e110 00 00 49 8B D4 44 8B C8 E8 DB 1B 00 00 49 3B C5 ..I..D.......I;. fffff800`02c0e120 74 35 48 8B 96 98 00 00 00 48 8D 84 24 90 00 00 t5H......H..$... fffff800`02c0e130 00 41 B1 01 48 89 44 24 28 44 8B C5 48 8B CE 44 .A..H.D$(D..H..D fffff800`02c0e140 88 6C 24 20 E8 43 12 00 00 49 3B C5 0F 84 2C 01 .l$ .C...I;...,. fffff800`02c0e150 00 00 E9 29 01 00 00 48 8B 5C 24 30 49 3B DD 74 ...)...H.\$0I;.t fffff800`02c0e160 2A 4D 3B E5 74 0C 48 8B D3 49 8B CC FF 15 AE CE *M;.t.H..I...... fffff800`02c0e170 01 00 48 8B CB FF 15 95 CF 01 00 33 D2 48 8B CB ..H........3.H.. fffff800`02c0e180 FF 15 AA CE 01 00 E9 F3 00 00 00 C1 E7 0C 41 B8 ..............A. fffff800`02c0e190 01 00 00 00 49 8B CC 8B D7 FF 15 99 CE 01 00 E9 ....I........... fffff800`02c0e1a0 DA 00 00 00 2B EB 33 C9 41 B8 48 61 6C 20 8B D5 ....+.3.A.Hal .. fffff800`02c0e1b0 44 8B FD 48 C1 E2 03 FF 15 33 D4 01 00 4C 8B F0 D..H.....3...L.. fffff800`02c0e1c0 49 3B C5 0F 84 8F 00 00 00 45 8B E5 41 3B ED 76 I;.......E..A;.v fffff800`02c0e1d0 3F 4C 8B E8 BA 00 10 00 00 B9 04 00 00 00 41 B8 ?L............A. fffff800`02c0e1e0 48 61 6C 20 FF 15 06 D4 01 00 49 89 45 00 48 85 Hal ......I.E.H. fffff800`02c0e1f0 C0 74 39 48 8B C8 FF 15 BC CE 01 00 48 C1 E8 20 .t9H........H.. fffff800`02c0e200 85 C0 75 28 41 FF C4 49 83 C5 08 44 3B E5 72 C4 ..u(A..I...D;.r. fffff800`02c0e210 48 8B 8E 98 00 00 00 44 8B C5 BA 01 00 00 00 E8 H......D........ fffff800`02c0e220 58 19 00 00 4C 8B E8 48 85 C0 75 6C 45 33 ED 45 X...L..H..ulE3.E fffff800`02c0e230 3B E5 76 19 49 8B EE 48 8B 4D 00 33 D2 FF 15 ED ;.v.I..H.M.3.... fffff800`02c0e240 CD 01 00 48 83 C5 08 49 83 EC 01 75 EA 33 D2 49 ...H...I...u.3.I fffff800`02c0e250 8B CE FF 15 D8 CD 01 00 41 3B DD 76 21 8B EB 48 ........A;.v!..H fffff800`02c0e260 8B 96 98 00 00 00 48 8B 5F 08 4C 8B C7 48 8B CE ......H._.L..H.. fffff800`02c0e270 E8 2B 15 00 00 48 83 ED 01 48 8B FB 75 E1 33 C0 .+...H...H..u.3. fffff800`02c0e280 48 8B 9C 24 98 00 00 00 48 83 C4 50 41 5F 41 5E H..$....H..PA_A^ fffff800`02c0e290 41 5D 41 5C 5F 5E 5D C3 8D 4D FF 85 C9 74 0C 8B A]A\_^]..M...t.. fffff800`02c0e2a0 D1 48 83 EA 01 48 8B 40 08 75 F6 48 89 78 08 49 [email protected] fffff800`02c0e2b0 8B FD 85 ED 74 29 49 8B DE 48 8B 0B FF 15 F6 CD ....t)I..H...... fffff800`02c0e2c0 01 00 41 89 45 00 48 8B 03 48 83 C3 08 48 83 C8 ..A.E.H..H...H.. fffff800`02c0e2d0 0F 49 83 EF 01 49 89 45 10 4D 8B 6D 08 75 DA 48 .I...I.E.M.m.u.H fffff800`02c0e2e0 8B 8E 98 00 00 00 48 8D 54 24 38 48 83 C1 78 FF ......H.T$8H..x. fffff800`02c0e2f0 15 83 CD 01 00 4C 8B 9E 98 00 00 00 48 8D 4C 24 .....L......H.L$ fffff800`02c0e300 38 41 01 AB D0 00 00 00 FF 15 3A CD 01 00 33 D2 8A........:...3. fffff800`02c0e310 49 8B CE FF 15 17 CD 01 00 E9 34 FD FF FF 90 90 I.........4..... fffff800`02c0e320 90 90 90 90 45 85 C0 74 43 48 89 5C 24 08 48 89 ....E..tCH.\$.H. fffff800`02c0e330 74 24 10 57 48 83 EC 20 48 8B F1 41 8B F8 48 8B t$.WH.. H..A..H. fffff800`02c0e340 5A 08 4C 8B C2 48 8B 96 98 00 00 00 48 8B CE E8 Z.L..H......H... fffff800`02c0e350 4C 14 00 00 48 83 EF 01 48 8B D3 75 E1 48 8B 5C L...H...H..u.H.\ fffff800`02c0e360 24 30 48 8B 74 24 38 48 83 C4 20 5F C3 90 90 90 $0H.t$8H.. _.... fffff800`02c0e370 90 90 90 90 48 8B C4 48 89 58 08 48 89 68 10 48 ....H..H.X.H.h.H fffff800`02c0e380 89 70 18 48 89 78 20 41 54 41 55 4C 8B D9 4D 8B .p.H.x ATAUL..M. fffff800`02c0e390 E0 48 8B F2 B9 FF 0F 00 00 4D 85 DB 75 08 4C 8B .H.......M..u.L. fffff800`02c0e3a0 D1 40 32 FF EB 12 4D 8B 93 88 00 00 00 41 8A BB [email protected].. fffff800`02c0e3b0 91 00 00 00 49 C1 EA 0C 44 8B 44 24 38 41 8B C1 ....I...D.D$8A.. fffff800`02c0e3c0 4C 2B 4E 20 23 C1 49 C1 E9 0C 41 BD 00 10 00 00 L+N #.I...A..... fffff800`02c0e3d0 41 8B D5 41 8B E9 2B D0 8B CA 4C 39 54 EE 30 76 A..A..+...L9T.0v fffff800`02c0e3e0 04 33 C9 EB 4F 41 3B D0 73 43 4C 8D 4C EE 38 4D .3..OA;.sCL.L.8M fffff800`02c0e3f0 39 11 77 39 49 8B 59 F8 48 8D 43 01 49 3B 01 75 9.w9I.Y.H.C.I;.u fffff800`02c0e400 2C 48 8B C3 49 33 01 48 A9 00 00 F0 FF 75 1E 40 ,H..I3.H.....u.@ fffff800`02c0e410 80 FF 01 74 0C 49 33 19 48 F7 C3 F0 FF FF FF 75 ...t.I3.H......u fffff800`02c0e420 0C 41 03 CD 49 83 C1 08 41 3B C8 72 C2 41 3B C8 .A..I...A;.r.A;. fffff800`02c0e430 41 0F 47 C8 4D 85 DB 0F 84 92 00 00 00 41 80 BB A.G.M........A.. fffff800`02c0e440 28 01 00 00 00 0F 84 84 00 00 00 4C 39 54 EE 30 (..........L9T.0 fffff800`02c0e450 76 7D 8B CA 48 8D 44 EE 38 41 3B D0 73 11 4C 39 v}..H.D.8A;.s.L9 fffff800`02c0e460 10 76 0C 41 03 CD 48 83 C0 08 41 3B C8 72 EF 49 .v.A..H...A;.r.I fffff800`02c0e470 8B 44 24 18 41 3B C8 44 8B 08 4C 8B 50 08 41 0F .D$.A;.D..L.P.A. fffff800`02c0e480 47 C8 41 C1 E9 0C EB 3A 45 8B 02 41 8D 41 01 41 G.A....:E..A.A.A fffff800`02c0e490 C1 E8 0C 44 3B C0 75 2E 41 8B C0 41 33 C1 A9 00 ...D;.u.A..A3... fffff800`02c0e4a0 00 F0 FF 75 21 40 80 FF 01 74 0D 41 8B C0 41 33 [email protected] fffff800`02c0e4b0 C1 A9 F0 FF FF FF 75 0E 4D 8B 52 08 45 8B C8 41 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  • Increase efficiency for an R simulator of the Monty Hall Puzzle

    - by jahan_m
    The Monty Hall Problem is a simple puzzle involving probability that even stumps professionals in careers dealing with some heavy-duty math. Here's the basic problem: Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice? You can find numerous explanations of the solution here: http://en.wikipedia.org/wiki/Monty_Hall_problem Goal of my simulation: Prove that a switching strategy will win you the car 2/3 of the time. I got curious and wanted to write a little function that simulates the problem many times and returns the proportion of wins if you switched and the proportion of wins if you stayed with your first choice. The function then plots the cumulative wins. First and foremost, I'm interested in hearing if my simulation is indeed replicating the Monty Problem, or if some aspect of the code got it wrong. Secondly, this function takes a long time to run once I get to about 10,000 simulations. I know I don't need this many simulations to prove this but I'd love to hear some ideas on how to make it more efficient. Thanks for your feedback! Monty_Hall=function(repetitions){ doors=c('A','B','C') stay_wins=0 switch_wins=0 series=data.frame(sim_num=seq(repetitions),cum_sum_stay=replicate(repetitions,0),cum_sum_switch=replicate(repetitions,0)) for(i in seq(repetitions)){ winning_door=sample(doors,1) contestant_chooses=sample(doors,1) if(contestant_chooses==winning_door) stay_wins=stay_wins+1 else switch_wins=switch_wins+1 series[i,'cum_sum_stay']=stay_wins series[i,'cum_sum_switch']=switch_wins } plot(series$sim_num,series$cum_sum_switch,col=2,ylab='Cumulative # of wins', xlab='Simulation #',main=sprintf('%d Simulations of the Monty Hall Paradox',repetitions),type='l') lines(series$sim_num,series$cum_sum_stay,col=4) legend('topleft',legend=c('Cumulative wins from switching', 'Cumulative wins from staying'),col=c(2,4),lty=1) result=list(series=series,stay_wins=stay_wins,switch_wins=switch_wins, proportion_stay_wins=stay_wins/repetitions, proportion_switch_wins=switch_wins/repetitions) return(result) } #Theory predicts that it is to the contestant's advantage if he #switches his choice to the other door. This function simulates the game #many times, and shows you the proportion of games in which staying or #switching would win the car. It also plots the cumulative wins for each strategy. Monty_Hall(100)

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  • A training world nugget for being taught by the best

    - by Testas
    June represents an exciting time for the SQL Server community with events all over the country in the next few months and there is plenty of knowledge to be gained from willing speakers enthusiastically sharing their knowledge. Furthermore, Paul Randall and Kimberley Trip will be conducting their highly recommended immersion events at London Heathrow in June.There are other big names within SQL Server that will be teaching this year. The company I used to work for, QA, has excellent trainers teaching SQL Server who I would always recommend. Occasionally a big name speaker will be take a course, unknowingly to the community. Solid Quality Mentors is such a company where their staff will teach at QA offices from time to time. And I know from conversation with Itzik Ben-Gan that he will be teaching Advanced TSQL within QA offices in London during the week of Oct 3-7. A link to the course details can be found here.http://www.qa.com/training-courses/technical-it-training/microsoft/microsoft-sql-server/microsoft-sql-server-2008-and-r2/advanced-t-sql-querying,-programming-and-tuning-for-sql-server-2005--2008So if you want to be taught by the best experts, consider checking www.QA.com for their advanced SQL courses, you could find yourself being taught by the best in the business in their field.Chris  

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  • Disable button until tabs have ben read...

    - by jimbo
    I have some tabs which have been created using Javascript and Mootools, my client wants the 'next button' at the bottom of the page to be disabled, until the tabs have been read(clicked). The page is dynamic (created with PHP and MySQL) and there could be two tabs or three, depending on the set-up. I am struggling today to think of the best solution. Any help more than welcome...

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  • Makeadder example from Ben alman

    - by Matrym
    In the below, where does b come from? I don't see it being passed in, so how could it be returned? function lockInFirstArg( fn, a ) {   return function( b ) {     return fn( a, b );   }; } Link: http://msdn.microsoft.com/en-us/scriptjunkie/gg575560 More complete excerpt (sorry for iPad formatting... No tabs): // More-general functions.   function add( a, b ) {   return a + b; }   function multiply( a, b ) {   return a * b; }   // Relatively flexible more-specific function generator.   function lockInFirstArg( fn, a ) {   return function( b ) {     return fn( a, b );   }; }   var add1 = lockInFirstArg( add, 1 ); add1( 2 );    // 3 add1( 3 );    // 4 add1( 10 );   // 11

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  • Java Spotlight Episode 57: Live From #Devoxx - Ben Evans and Martijn Verburg of the London JUG with Yara Senger of SouJava

    - by Roger Brinkley
    Tweet Live from Devoxx 11,  an interview with Ben Evans and Martijn Verburg from the London JUG along with  Yara Senger from the SouJava JUG on the JCP Executive Committee Elections, JSR 248, and Adopt-a-JSR program. Both the London JUG and SouJava JUG are JCP Standard Edition Executive Committee Members. Joining us this week on the Java All Star Developer Panel are Geertjan Wielenga, Principal Product Manger in Oracle Developer Tools; Stephen Chin, Java Champion and Java FX expert; and Antonio Goncalves, Paris JUG leader. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link: Java Spotlight Podcast in iTunes. Show Notes News Netbeans 7.1 JDK 7 upgrade tools Netbeans First Patch Program OpenJFX approved as an OpenJDK project Devoxx France April 18-20, 2012 Events Nov 22-25, OTN Developer Days in the Nordics Nov 22-23, Goto Conference, Prague Dec 6-8, Java One Brazil, Sao Paulo Feature interview Ben Evans has lived in "Interesting Times" in technology - he was the lead performance testing engineer for the Google IPO, worked on the initial UK trials of 3G networks with BT, built award-winning websites for some of Hollywood's biggest hits of the 90s, rearchitected and reimagined technology helping some of the most vulnerable people in the UK and has worked on everything from some of the UKs very first ecommerce sites, through to multi-billion dollar currency trading systems. He helps to run the London Java Community, and represents the JUG on the Java SE/EE Executive Committee. His first book "The Well-Grounded Java Developer" (with Martijn Verburg) has just been published by Manning. Martijn Verburg (aka 'the Diabolical Developer') herds Cats in the Java/open source communities and is constantly humbled by the creative power to be found there. Currently he resides in London where he co-leads the London JUG (a JCP EC member), runs a couple of open source projects & drinks too much beer at his local pub. You can find him online moderating at the Javaranch or discussing (ranting?) subjects on the Prgorammers Stack Exchange site. Most recently he's become a regular speaker at conferences on Java, open source and software development and has recently wrapped up his first Manning title - "The Well-Grounded Java Developer" with his co-author Ben Evans. Yara Senger is the partner and director of teacher education and Globalcode, graduated from the University of Sao Paulo, Sao Carlos, has significant experience in Brazil and abroad in developing solutions to critical Java. She is the co-creator of Java programs Academy and Academy of Web Developer, accumulating over 1000 hours in the classroom teaching Java. She currently serves as the President of Sou Java. In this interview Ben, Martijn, and Yara talk about the JCP Executive Committee Elections, JSR 348, and the Adopt-a-JSR program. Mail Bag What's Cool Show Transcripts Transcript for this show is available here when available.

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  • Internet Hall of Fame : les pionniers d'Internet récompensés, Richard Stallman et Robert Meltcafe reconnus à leur juste valeur

    L'internet society place dans son hall of fame les hommes et les femmes qui ont façonné Internet de ses débuts à aujourd'hui Richard Stallman et Robert Meltcafe reconnus à leur juste valeurInternet. Le réseau des réseaux par excellence. Aujourd'hui, faire ses achats en ligne, jouer à des jeux en réseaux, « tchatcher » avec ses amis sur les réseaux sociaux sont des acquis. Cependant, beaucoup ne se doutent même pas que pour en arriver là, des étapes ont été franchies, des hommes et des femmes ont du donner de leur temps, de leur énergie et même de leur personne pour qu'internet soit ce réseau qui rend service à plus d'un aujourd'hui.Beaucoup ? Mais pas tous. Le 3 août, Berlin sera le siège d'un événement ...

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  • Adding additional users to Ubuntu server and configuring Samba

    - by Ben
    I have installed Ubuntu Server 12.10 and during the install created a user for myself ben, I now wish to add a second user bill. I have an external drive that I have mounted to /media/storage and created a shared folder called Share, the owner of the folder is ben:ben, how do I grant bill access to the folder? I don't want to put him in the group ben. Once setup, I need to configure Samba & NFS, here is my Samba configuration [Share] path = /media/storage/Share read only = no public = yes writeable = yes force user = ben How do I give both bill and ben access to the share via Samba? Thank you.

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  • Book Review: &ldquo;Inside Microsoft SQL Server 2008: T-SQL Querying&rdquo; by Itzik Ben-Gan et al

    - by Sam Abraham
    In the past few weeks, I have been reading “Inside Microsoft SQL Server 2008: T-SQL Querying” by Itzik Ben-Gan et al. In the next few lines, I will be providing a quick book review having finished reading this valuable resource on SQL Server 2008. In this book, the authors have targeted most of the common as well as advanced T-SQL Querying scenarios that one would use for development on a SQL Server database. Book content covered sufficient theory and practice to empower its readers to systematically write better performance-tuned queries. Chapter one introduced a quick refresher of the basics of query processing. Chapters 2 and 3 followed with a thorough coverage of applicable relational algebra concepts which set a good stage for chapter 4 to dive deep into query tuning. Chapter 4 has been my favorite chapter of the book as it provided nice illustrations of the internals of indexes, waits, statistics and query plans. I particularly appreciated the thorough explanation of execution plans which helped clarify some areas I may have not paid particular attention to in the past. The book continues to focus on SQL operators tackling a few in each chapter and covering their internal workings and the best practices to follow when used. Figures and illustrations have been particularly helpful in grasping advanced concepts covered therein. In conclusion, Inside Microsoft SQL Server 2008: T-SQL Querying provided me with 750+ pages of focused, advanced and practical knowledge that has added a few tips and tricks to my arsenal of query tuning strategies. Many thanks to the O’Reilly User Group Program and its support of our West Palm Beach Developers’ Group. --Sam Abraham

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  • Trying to run Compiz but it won't work!

    - by Ben Deslauriers
    ben@ben-ThinkCentre-XXXX:~$ compiz --replace Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...yes [LOG]: Moving Internal Files [LOG]: Copying subdirectory from /home/ben/.compiz/session to /home/ben/.compiz-1/session [LOG]: Copied file /home/ben/.compiz/session/10cd9233ce225949613394716379921200000016160046 to /home/ben/.compiz-1/session/10cd9233ce225949613394716379921200000016160046 [LOG]: Successfully moved internal files Backend : gconf Integration : true Profile : default Adding plugins Initializing core options...done Initializing composite options...done nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 55 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 56 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 59 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 58 nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30 Initializing opengl options...done Initializing decor options...done Initializing grid options...done Initializing gnomecompat options...done Initializing place options...done Initializing session options...done Initializing move options...done Initializing mousepoll options...done Initializing resize options...done Initializing snap options...done Initializing vpswitch options...done Initializing animation options...done Initializing workarounds options...done Initializing fade options...done Initializing cube options...done Initializing scale options...done compiz (expo) - Warn: failed to bind image to texture Initializing expo options...done Initializing rotate options...done Initializing ezoom options...done Setting Update "main_menu_key" Setting Update "run_key" Starting gtk-window-decorator compiz (decor) - Warn: No default decoration found, placement will not be correct compiz (decor) - Warn: No default decoration found, placement will not be correct I have NO CLUE what I am doing wrong :( Please help. All I did was type in compiz --replace and it made my screen flicker and it showed this message in the terminal. I HAVE NO CLUE :(

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  • Pointing non-www to a spcific sub-directory

    - by Ben Sinclair
    I might be going about this all wrong so let me know if I am. I am creating software that allows people to sign up and have their own sub-domain on my website. So say my website is ben.com, they could have their own sub-domain called juice.ben.com. When they type their sub-domain juice.ben.com in their address bar, it will load the contents in a root directory. I have also set-up a .htaccess redirect to redirect www.ben.com to ben.com. Not sure if this matters with my question but I thought I'd mention it. Ok, so basically what I think I need to do is put the software they they've signed up to in the root directory. So when someone goes to juice.ben.com, they will be pointed to the root directory (I beleive I cans et-up wild card sub-domains with my host) and the software will then analyse their sub-domain and then display their account. Now, if someone just types in ben.com into their browser, I want it to show the contents of the ben.com/_website/ folder but still show in the address bar that they are still in the root directory. Hopefully I am making sense :) Is this possible with htaccess? If so, what do I need to do?

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  • How do I get GNU screen not to start in my home directory in OS X?

    - by Benjamin Oakes
    GNU Screen (screen) behaves differently on OS X 10.5 (Leopard) and 10.6 (Snow Leopard) compared to Linux (at least Ubuntu, Red Hat, and Gentoo) and OS X 10.4 (Tiger). In 10.5 and 10.6, new screens (made with screen or ^A c) always places me in my home directory ~. In Linux and OS X Tiger, new screens have a pwd of wherever the screen was created originally. Made up examples to illustrate what I mean: Tiger: $ cd ~/foo $ pwd /Users/ben/foo $ screen $ pwd /Users/ben/foo $ screen # or ^A c $ pwd /Users/ben/foo Leopard, Snow Leopard: $ cd ~/foo $ pwd /Users/ben/foo $ screen $ pwd /Users/ben $ screen # or ^A c $ pwd /Users/ben How do I get Leopard and Snow Leopard to behave like Tiger used to?

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  • JavaOne Latin America Schedule Changes For Thursday

    - by Tori Wieldt
    tweetmeme_url = 'http://blogs.oracle.com/javaone/2010/12/javaone_latin_america_schedule_changes_for_thursday.html'; Share .FBConnectButton_Small{background-position:-5px -232px !important;border-left:1px solid #1A356E;} .FBConnectButton_Text{margin-left:12px !important ;padding:2px 3px 3px !important;} The good news: we've got LOTS of developers at JavaOne Latin America.The bad news: the rooms are too small to hold everyone! (we've heard you)The good news: selected sessions for Thursday have been moved larger rooms (the keynote halls) More good news: some sessions that were full from Wednesday will be repeated on Thursday. SCHEDULE CHANGES FOR THURSDAY, DECEMBER 9THNote: Be sure to check the schedule on site, there still may be some last minute changes. Session Name Speaker New Time/Room Ginga, LWUIT, JavaDTV and You 2.0 Dimas Oliveria Thursday, December 9, 11:15am - 12:00pm Auditorio 4 JavaFX do seu jeito: criando aplicativos JavaFX com linguagens alternativas Stephen Chin Thursday, December 9, 3:00pm - 3:45pm Auditorio 4 Automatizando sua casa usando Java; JavaME, JavaFX, e Open Source Hardware Vinicius Senger Thursday, December 9, 9:00am - 9:45am Auditorio 3 Construindo uma arquitetura RESTful para aplicacoes ricas com HTML 5 e JSF2 Raphael Helmonth Adrien Caetano Thursday, December 9, 5:15pm - 6:00pm Auditorio 2 Dicas eTruquies sobre performance em Java EE JPA e JSF Alberto Lemos e Danival Taffarel Calegari Thursday, December 9, 2:00pm - 2:45pm Auditorio 2 Escrevendo Aplicativos Multipatforma Incriveis Usando LWUIT Roger Brinkley Cancelled Platforma NetBeans: sem slide - apenas codigo Mauricio Leal Cancelled Escalando o seu AJAX Push com Servlet 3.0 Paulo Silveria Keynote Hall 9:00am - 9:45am Cobetura Completa de Ferramentas para a Platforma Java EE 6 Ludovic Champenois Keynote Hall 10:00am - 10:45am Servlet 3.0 - Expansivel, Assincrono e Facil de Usar Arun Gupta Keynote Hall 4:00pm - 4:45pm Transforme seu processo em REST com JAX-RS Guilherme Silveria Keynote Hall 5:00pm - 5:45pm The Future of Java Fabiane Nardon e Bruno Souza Keynote Hall 6:00pm - 6:45pm Thanks for your understanding, we are tuning the conference to make it the best JavaOne possible.

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  • 50 Years of LEDs: An Interview with Inventor Nick Holonyak [Video]

    - by Jason Fitzpatrick
    The man who powered on the first LED half a century ago is still around to talk about it; read on to watch an interview with LED inventor Nick Holonyak. The most fascinating thing about Holonyak’s journey to the invention of the LED was that he started off trying to build a laser and ended up inventing a super efficient light source: Holonyak got his PhD in 1954. In 1957, after a year at Bell Labs and a two year stint in the Army, he joined GE’s research lab in Syracuse, New York. GE was already exploring semiconductor applications and building the forerunners of modern diodes called thyristors and rectifiers. At a GE lab in Schenectady, the scientist Robert Hall was trying to build the first diode laser. Hall, Holonyak and others noticed that semiconductors emit radiation, including visible light, when electricity flows through them. Holonyak and Hall were trying to “turn them on,” and channel, focus and multiply the light. Hall was the first to succeed. He built the world’s first semiconductor laser. Without it, there would be no CD and DVD players today. “Nobody knew how to turn the semiconductor into the laser,” Holonyak says. “We arrived at the answer before anyone else.” But Hall’s laser emitted only invisible, infrared light. Holonyak spent more time in his lab, testing, cutting and polishing his hand-made semiconducting alloys. In the fall of 1962, he got first light. “People thought that alloys were rough and turgid and lumpy,” he says. “We knew damn well what happened and that we had a very powerful way of converting electrical current directly into light. We had the ultimate lamp.” How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems 7 Ways To Free Up Hard Disk Space On Windows

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  • How do I stop and repair a RAID 5 array that has failed and has I/O pending?

    - by Ben Hymers
    The short version: I have a failed RAID 5 array which has a bunch of processes hung waiting on I/O operations on it; how can I recover from this? The long version: Yesterday I noticed Samba access was being very sporadic; accessing the server's shares from Windows would randomly lock up explorer completely after clicking on one or two directories. I assumed it was Windows being a pain and left it. Today the problem is the same, so I did a little digging; the first thing I noticed was that running ps aux | grep smbd gives a lot of lines like this: ben 969 0.0 0.2 96088 4128 ? D 18:21 0:00 smbd -F root 1708 0.0 0.2 93468 4748 ? Ss 18:44 0:00 smbd -F root 1711 0.0 0.0 93468 1364 ? S 18:44 0:00 smbd -F ben 3148 0.0 0.2 96052 4160 ? D Mar07 0:00 smbd -F ... There are a lot of processes stuck in the "D" state. Running ps aux | grep " D" shows up some other processes including my nightly backup script, all of which need to access the volume mounted on my RAID array at some point. After some googling, I found that it might be down to the RAID array failing, so I checked /proc/mdstat, which shows this: ben@jack:~$ cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sdb1[3](F) sdc1[1] sdd1[2] 2930271872 blocks level 5, 64k chunk, algorithm 2 [3/2] [_UU] unused devices: <none> And running mdadm --detail /dev/md0 gives this: ben@jack:~$ sudo mdadm --detail /dev/md0 /dev/md0: Version : 00.90 Creation Time : Sat Oct 31 20:53:10 2009 Raid Level : raid5 Array Size : 2930271872 (2794.53 GiB 3000.60 GB) Used Dev Size : 1465135936 (1397.26 GiB 1500.30 GB) Raid Devices : 3 Total Devices : 3 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Mon Mar 7 03:06:35 2011 State : active, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 1 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K UUID : f114711a:c770de54:c8276759:b34deaa0 Events : 0.208245 Number Major Minor RaidDevice State 3 8 17 0 faulty spare rebuilding /dev/sdb1 1 8 33 1 active sync /dev/sdc1 2 8 49 2 active sync /dev/sdd1 I believe this says that sdb1 has failed, and so the array is running with two drives out of three 'up'. Some advice I found said to check /var/log/messages for notices of failures, and sure enough there are plenty: ben@jack:~$ grep sdb /var/log/messages ... Mar 7 03:06:35 jack kernel: [4525155.384937] md/raid:md0: read error NOT corrected!! (sector 400644912 on sdb1). Mar 7 03:06:35 jack kernel: [4525155.389686] md/raid:md0: read error not correctable (sector 400644920 on sdb1). Mar 7 03:06:35 jack kernel: [4525155.389686] md/raid:md0: read error not correctable (sector 400644928 on sdb1). Mar 7 03:06:35 jack kernel: [4525155.389688] md/raid:md0: read error not correctable (sector 400644936 on sdb1). Mar 7 03:06:56 jack kernel: [4525176.231603] sd 0:0:1:0: [sdb] Unhandled sense code Mar 7 03:06:56 jack kernel: [4525176.231605] sd 0:0:1:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Mar 7 03:06:56 jack kernel: [4525176.231608] sd 0:0:1:0: [sdb] Sense Key : Medium Error [current] [descriptor] Mar 7 03:06:56 jack kernel: [4525176.231623] sd 0:0:1:0: [sdb] Add. Sense: Unrecovered read error - auto reallocate failed Mar 7 03:06:56 jack kernel: [4525176.231627] sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 17 e1 5f bf 00 01 00 00 To me it is clear that device sdb has failed, and I need to stop the array, shutdown, replace it, reboot, then repair the array, bring it back up and mount the filesystem. I cannot hot-swap a replacement drive in, and don't want to leave the array running in a degraded state. I believe I am supposed to unmount the filesystem before stopping the array, but that is failing, and that is where I'm stuck now: ben@jack:~$ sudo umount /storage umount: /storage: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1)) It is indeed busy; there are some 30 or 40 processes waiting on I/O. What should I do? Should I kill all these processes and try again? Is that a wise move when they are 'uninterruptable'? What would happen if I tried to reboot? Please let me know what you think I should do. And please ask if you need any extra information to diagnose the problem or to help!

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