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• Trouble connecting to a secured samba share with Ubuntu Server 10.04

  - by PoppySeeds

  I'm following these guidelines: https://help.ubuntu.com/10.04/serverguide/C/samba-fileprint-security.html But it's quite vague on how to connect from Windows. I can browse the share, but I can't write to it. The section on adding acl to your fstab file is also vague. What should my file look like if my share is part of my /home directory?

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• What is the safest way to create a boot sector on an existing system drive?

  - by zespri

  I have 2 drives in my PC one is primary master and used to be the system drive with windows XP installed. The second one is secondary and has Windows 7 installed that I'm using as the operating system. I want to decommission the old hard drive with XP and re-plug the Windows 7 one as the primary master so I could boot from it. What is the safest way for me to write the correct boot sector on the Windows 7 hard drive so I don't ruin my Windows 7 installation?

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• svn path in google apps script

  - by deepasun

  Hi, I want to write a google apps script in google docs spreadsheet, such that it should update the svn revision of particular component automatically (which is in one cell of that spreadsheet) when i run that script

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• SLES AutoYaST Script Validity Verification

  - by Xerxes

  Does anyone here write their own customized AutoYaST scripts for building SLES servers? I'm not talking about generating them with yast2 autoyast. If so, have you found a way to verify the syntax? xmllint is good as far as telling you that the XML syntax is valid, but with an upto date DTD, it can't tell you anything more, and the shipped DTDs are out-of-date. I've opened a ticket with Novell on this, but who knows when and what I'll hear back.

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• Map FTP server as a (local) drive in Finer

  - by arik-so

  Hello, I am using Mac OS X 10.6 Snow Leopard. What I need is to map my FTP server as a local drive - or anything I have write access to - in Finder. Thanks - A LOT!!! - in advance.

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• How can I prevent cron from filling up my syslog?

  - by user7321

  I have a script which needs to be executed each minute. The problem is that cron is logging to /var/log/syslog each time it executes. I end up seeing something like this repeated over and over in /var/log/syslog- Jun 25 00:56:01 myhostname /USR/SBIN/CRON[1144]: (root) CMD (php /path/to/script.php /dev/null) btw- i'm using debian My questions is- Is there any way I can tell cron not write this information to syslog every time?

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• stat command filesize reporting on busybox

  - by datadevil

  I'm trying to write a shell script in busybox to check the filesize of a file. Having read that stat is more reliable then ls, I decided to use that, but somehow when using the following command: stat -c %s filename I get the following output: 559795. This goes for the following 2 files (shown using ls -la): 0 Jan 20 16:32 foo_empty 4 Jan 20 16:32 foo_not_empty Anyone know what's happening there? I can just go back to using ls, but I'm not understanding what's happening here, and that's bothering me..

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• Mounting GlusterFS share under www-data user

  - by Roman Newaza

  Problem: After directory is auto-mounted, Web Server has no write permissions to it. Question: How to auto-mount GlusterFS endpoint via /etc/fstab so that mount point belongs to www-data after it's mounted? For now, the mount point belongs to www-data, but after mounting it turns to root. # /etc/fstab foo.com:/st /st glusterfs defaults 0 0 Seams like I cannot define user / group as mount options for GlusterFS, at least I don't see it when man glusterfs. Thanks!

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• IIS 7.5 (Windows 7) - HTTP Error 401.3 - Unauthorized

  - by Nathan Ridley

  I'm trying to test my ASP.Net website on localhost and I'm getting this error: HTTP Error 401.3 - Unauthorized You do not have permission to view this directory or page because of the access control list (ACL) configuration or encryption settings for this resource on the Web server. I have the following users on the website application folder, with full read/write permissions: NETWORK SERVICE IIS_IUSRS SYSTEM Administrators Nathan (me) What can I try to fix this?

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• how to access tomcat user directories through php

  - by Elamurugan

  I have to access/write directories through php that are created by tomcat by upload process. php apache:apache cant able to access tomcat:tomcat directories. Please tell me what i should change to work it out.

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• how to change OS X Trackpad handwriting size?

  - by Nano8Blazex

  Is there any way to change the size of the window of the "trackpad handwriting" input method? (I'm using it to write Traditional Chinese). The gray box is rather small for me, and I'd like to make it a bit bigger for ease of seeing. Is this possible? Thanks.

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• Possible to direct naked domain to external IP

  - by Luke

  So I found this post: configure Bind to have a custom domain on tumblr and I was trying to ask a related question: Would it be possible to set up an A record pointing traffic to domain.com to Tumblr and feed.domain.com to the IP address of my choice? In other words, by setting up a naked domain A record to Tumblr's IP, will I inherently lose traffic to feed.domain.com? Can I write another A record for the specific subdomains I want to point to my server? I hope this makes sense.

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• Share Truecrypt container

  - by uwe

  Hello, is it possible to put a truecrypt container on a net share and access/mount it form multiple machines (windows) at the same time? I fear that if both would write the file could be corrupted.

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• Slow solid state drive on laptop running Linux

  - by wcyang

  I installed a solid state drive on my laptop, but I don't get the blazing speeds which people write about. My system: Laptop: Acer Aspire 7552G-6061 Solid state drive: Crucial 256GB M4 CT256M4SSD2 Operating system: Linux (Trisquel 5.5, a derivative of Ubuntu) I am using AHCI. I installed the operating system onto the solid state drive (as opposed to copying it). How can I make the solid state drive faster? Could the problem be with the block or sector alignment?

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• How I can make sudo session an hour and not few minutes in Ubuntu 10.04?

  - by meyosef

  How I can make sudo ubuntu 10.04 session an hour and not few minutes? Now I have to write my password for sudo commands every few minutes. Thanks

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• Deleting huge chunks of data from mysql innodb

  - by mingyeow

  I need to delete a huge chunk of my data in my production database, which runs about 100GB in size. If possible, i would like to minimize my downtime. My selection criteria for deleting is likely to be DELETE * FROM POSTING WHERE USER.ID=5 AND UPDATED_AT<100 What is the best way to delete it? Build an index? Write a sequential script that deletes via paginating through the rows 1000 at a time?

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• How do I find all files and directories writable by a specific user?

  - by Pistos

  Under Linux, how can I find all the files and directories that are writable (or, actually, not writable) by a particular user? Edit: To clarify, I meant under a particular subdir, not systemwide. And yes, that means all the permutations and combinations of user, group and world writability that would allow that user to write. I know what the question entails semantically, I was hoping for a one- or few-liner to execute to get a list of these files.

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• i dont see the option to save the partition table

  - by Bipin Neupane

  the issue is this Undo the CLEAN command on the portable hdd : DISKPART unfortunately at step no 10, i dont see the option to save the partition table.but there are options for: deeper search quit write a partition. wat should i do?plz help(i run testdrive 6.14) here is how this happened... I ran cmd then diskpart then selected the volume used 'CLEAN' command to clear the configuration (accidentally) does reinstalling my windows solve this ? will my hard drive work on other computers?

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• excel pivot table : is it possible to display details on single click of cell in same sheet

  - by bala

  I have an excel pivot table the pivot table contains rows like Status-count open-10 closed-100 in progress-50 Now, on click of the count cells, is it possible to display the relevant details in teh same sheet? or is it possible to write a macro to popup a messagebox with the row information?

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• can I make firefox remember what spellcheck dictionary to use for particular web sites?

  - by Radek

  I read and write on the web in two different languages and it would be really handy to teach firefox to use this spellcheck dictionary for that and that website while the default one would be english. Is anything like that possible? ( win XP + ff 3.6 )

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• RabbitMQ and persistence (blocking writes?)

  - by daharon

  I want to create a RabbitMQ server on a virtual machine (VMware) to be used in production. It will contain persistent queues. I'm wondering if it is a bad idea to store the server on a NAS that's accessed over NFS. Basically my questions are: Will RabbitMQ's writes be blocking? Will the entire queue's operation halt on a write? How much performance degradation should I expect when persisting over NFS?

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• any good networking book recommended? [closed]

  - by Jian Lin

  i have wanted to learn about networking and how they work. Are there books or websites that are good for them? Some things I wanted to learn about: how to write a program that works like traceroute / tracert how subnet masks work how http://192.168.1.105 works how http://127.0.0.1 works how http://localhost works how http://room3pc works how smb://room3pc works how a LAN works with or without DHCP how to connect to a mac using a URL

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• Linux RAID-0 performance doesn't scale up over 1 GB/s

  - by wazoox

  I have trouble getting the max throughput out of my setup. The hardware is as follow : dual Quad-Core AMD Opteron(tm) Processor 2376 16 GB DDR2 ECC RAM dual Adaptec 52245 RAID controllers 48 1 TB SATA drives set up as 2 RAID-6 arrays (256KB stripe) + spares. Software : Plain vanilla 2.6.32.25 kernel, compiled for AMD-64, optimized for NUMA; Debian Lenny userland. benchmarks run : disktest, bonnie++, dd, etc. All give the same results. No discrepancy here. io scheduler used : noop. Yeah, no trick here. Up until now I basically assumed that striping (RAID 0) several physical devices should augment performance roughly linearly. However this is not the case here : each RAID array achieves about 780 MB/s write, sustained, and 1 GB/s read, sustained. writing to both RAID arrays simultaneously with two different processes gives 750 + 750 MB/s, and reading from both gives 1 + 1 GB/s. however when I stripe both arrays together, using either mdadm or lvm, the performance is about 850 MB/s writing and 1.4 GB/s reading. at least 30% less than expected! running two parallel writer or reader processes against the striped arrays doesn't enhance the figures, in fact it degrades performance even further. So what's happening here? Basically I ruled out bus or memory contention, because when I run dd on both drives simultaneously, aggregate write speed actually reach 1.5 GB/s and reading speed tops 2 GB/s. So it's not the PCIe bus. I suppose it's not the RAM. It's not the filesystem, because I get exactly the same numbers benchmarking against the raw device or using XFS. And I also get exactly the same performance using either LVM striping and md striping. What's wrong? What's preventing a process from going up to the max possible throughput? Is Linux striping defective? What other tests could I run?

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• Ofice for Mac 2011 does not start, how do I repair the database?

  - by RomanT

  After a TimeMachine restore; Office 2011 is having kittens over permissions it would seem. Having attempted a 'repair' out of Disk Utility, am still seeing: there is a problem with the Office database upon startup, after which Word/Excel work without issues. Outlook on the other hand won't even start. Given the obvious message here "You do not have write access to the Outlook application folder" – where is the DB located to check?

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• NFS issue brings down entire vSphere ESX estate

  - by growse

  I experienced an odd issue this morning where an NFS issue appeared to have taken down the majority of my VMs hosted on a small vSphere 5.0 estate. The infrastructure itself is 4x IBM HS21 blades running around 20 VMs. The storage is provided by a single HP X1600 array with attached D2700 chassis running Solaris 11. There's a couple of storage pools on this which are exposed over NFS for the storage of the VM files, and some iSCSI LUNs for things like MSCS shared disks. Normally, this is pretty stable, but I appreciate the lack of resiliancy in having a single X1600 doing all the storage. This morning, in the logs of each ESX host, at around 0521 GMT I saw a lot of entries like this: 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4cf9a8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4dc9e8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4d3fa8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4de0a8 3 [....] 2011-11-30T06:16:07.042Z cpu0:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:17:01.459Z cpu2:4011)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:25:17.887Z cpu3:2051)NFSLock: 608: Stop accessing fd 0x41000a4c2b28 3 2011-11-30T06:27:16.063Z cpu3:4011)NFSLock: 568: Start accessing fd 0x41000a4d8928 again 2011-11-30T06:35:30.827Z cpu1:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /tank/ISO, mounted as 5acdbb3e-410e56e3-0000-000000000000 ("ISO (1)") 2011-11-30T06:36:37.953Z cpu6:2054)NFS: 292: Restored connection to the server 10.13.111.197 mount point /tank/ISO, mounted as 5acdbb3e-410e56e3-0000-000000000000 ("ISO (1)") 2011-11-30T06:40:08.242Z cpu6:2054)NFSLock: 608: Stop accessing fd 0x41000a4c3e68 3 2011-11-30T06:40:34.647Z cpu3:2051)NFSLock: 568: Start accessing fd 0x41000a4d8928 again 2011-11-30T06:44:42.663Z cpu1:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:44:53.973Z cpu0:4011)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:51:28.296Z cpu5:2058)NFSLock: 608: Stop accessing fd 0x41000ae3c528 3 2011-11-30T06:51:44.024Z cpu4:2052)NFSLock: 568: Start accessing fd 0x41000ae3b8e8 again 2011-11-30T06:56:30.758Z cpu4:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:56:53.389Z cpu7:2055)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T07:01:50.350Z cpu6:2054)ScsiDeviceIO: 2316: Cmd(0x41240072bc80) 0x12, CmdSN 0x9803 to dev "naa.600508e000000000505c16815a36c50d" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x24 0x0. 2011-11-30T07:03:48.449Z cpu3:2051)NFSLock: 608: Stop accessing fd 0x41000ae46b68 3 2011-11-30T07:03:57.318Z cpu4:4009)NFSLock: 568: Start accessing fd 0x41000ae48228 again (I've put a complete dump from one of the hosts on pastebin: http://pastebin.com/Vn60wgTt) When I got in the office at 9am, I saw various failures and alarms and troubleshooted the issue. It turned out that pretty much all of the VMs were inaccessible, and that the ESX hosts either were describing each VM as 'powered off', 'powered on', or 'unavailable'. The VMs described as 'powered on' where not in any way reachable or responding to pings, so this may be lies. There's absolutely no indication on the X1600 that anything was awry, and nothing on the switches to indicate any loss of connectivity. I only managed to resolve the issue by rebooting the ESX hosts in turn. I have a number of questions: What the hell happened? If this was a temporary NFS failure, why did it put the ESX hosts into a state from which a reboot was the only recovery? In the future, when the NFS server goes a little off-piste, what would be the best approach to add some resilience? I've been looking at budgeting for next year and potentially have budget to purchase another X1600/D2700/disks, would an identical mirrored disk setup help to mitigate these sorts of failures automatically? Edit (Added requested details) To expand with some details as requested: The X1600 has 12x 1TB disks lumped together in mirrored pairs as tank, and the D2700 (connected with a mini SAS cable) has 12x 300GB 10k SAS disks lumped together in mirrored pairs as sastank zpool status pool: rpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 c7t0d0s0 ONLINE 0 0 0 errors: No known data errors pool: sastank state: ONLINE scan: scrub repaired 0 in 74h21m with 0 errors on Wed Nov 30 02:51:58 2011 config: NAME STATE READ WRITE CKSUM sastank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c7t14d0 ONLINE 0 0 0 c7t15d0 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 c7t16d0 ONLINE 0 0 0 c7t17d0 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 c7t18d0 ONLINE 0 0 0 c7t19d0 ONLINE 0 0 0 mirror-3 ONLINE 0 0 0 c7t20d0 ONLINE 0 0 0 c7t21d0 ONLINE 0 0 0 mirror-4 ONLINE 0 0 0 c7t22d0 ONLINE 0 0 0 c7t23d0 ONLINE 0 0 0 mirror-5 ONLINE 0 0 0 c7t24d0 ONLINE 0 0 0 c7t25d0 ONLINE 0 0 0 errors: No known data errors pool: tank state: ONLINE scan: scrub repaired 0 in 17h28m with 0 errors on Mon Nov 28 17:58:19 2011 config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c7t1d0 ONLINE 0 0 0 c7t2d0 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 c7t3d0 ONLINE 0 0 0 c7t4d0 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 c7t5d0 ONLINE 0 0 0 c7t6d0 ONLINE 0 0 0 mirror-3 ONLINE 0 0 0 c7t8d0 ONLINE 0 0 0 c7t9d0 ONLINE 0 0 0 mirror-4 ONLINE 0 0 0 c7t10d0 ONLINE 0 0 0 c7t11d0 ONLINE 0 0 0 mirror-5 ONLINE 0 0 0 c7t12d0 ONLINE 0 0 0 c7t13d0 ONLINE 0 0 0 errors: No known data errors The filesystem exposed over NFS for the primary datastore is sastank/VMStorage zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 45.1G 13.4G 92.5K /rpool rpool/ROOT 2.28G 13.4G 31K legacy rpool/ROOT/solaris 2.28G 13.4G 2.19G / rpool/dump 15.0G 13.4G 15.0G - rpool/export 11.9G 13.4G 32K /export rpool/export/home 11.9G 13.4G 32K /export/home rpool/export/home/andrew 11.9G 13.4G 11.9G /export/home/andrew rpool/swap 15.9G 29.2G 123M - sastank 1.08T 536G 33K /sastank sastank/VMStorage 1.01T 536G 1.01T /sastank/VMStorage sastank/comstar 71.7G 536G 31K /sastank/comstar sastank/comstar/sql_tempdb 6.31G 536G 6.31G - sastank/comstar/sql_tx_data 65.4G 536G 65.4G - tank 4.79T 578G 42K /tank tank/FTP 269G 578G 269G /tank/FTP tank/ISO 28.8G 578G 25.9G /tank/ISO tank/backupstage 2.64T 578G 2.49T /tank/backupstage tank/cifs 301G 578G 297G /tank/cifs tank/comstar 1.54T 578G 31K /tank/comstar tank/comstar/msdtc 1.07G 579G 32.8M - tank/comstar/quorum 577M 578G 47.9M - tank/comstar/sqldata 1.54T 886G 304G - tank/comstar/vsphere_lun 2.09G 580G 22.2M - tank/mcs-asset-repository 7.01M 578G 6.99M /tank/mcs-asset-repository tank/mscs-quorum 55K 578G 36K /tank/mscs-quorum tank/sccm 16.1G 578G 12.8G /tank/sccm As for the networking, all connections between the X1600, the Blades and the switch are either LACP or Etherchannel bonded 2x 1Gbit links. Switch is a single Cisco 3750. Storage traffic sits on its own VLAN segregated from VM machine traffic.

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