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• Linux: Can't overwrite files on samba store

  - by jonescb

  I'm using CentOS 5.5 with smbclient 3.0.33-3.28-el5 (latest version in repo), and I can't overwrite files in my Samba store. I am not the admin for the Samba server, so there isn't anything I can do server side. But I do have write permission to the server. I know the server runs Windows XP or Server 2003; I don't know. I can delete the file, and then copy the new version over, but I can't overwrite it. Using the cp command I'll get this error: [jonescb@localhost ~]$ cp foo.txt /mnt/si_storage/foo.txt cp: cannot create regular file `/mnt/si_storage/foo.txt': No such file or directory` And if I edit a file on the server using vim, I can save it once, but if I save it again I get this: "/mnt/si_storage/foo.txt" E212: Can't open file for writing This is my /etc/fstab entry for the samba server: //192.168.1.2/SI_STORAGE /mnt/si_storage cifs username=myuser,password=mypass 0 0 Edit: I can overwrite files just fine on my XP machine. The CentOS box is the only one having problems.

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• Error when mount the database in exchange 2010 SP1

  - by user64060

  Hi, My company have two exchange 2010 SP1 servers with DAG configuration with OS widows server 2008 R2 in testing entironment. Today i want to test my backup possibility, so i restore the backup data to another location not original location. I dismount the database and then delete the all files under the database location. last I copy back the files from back up location to database location. When i want to mount the database. It will come out the below error! -------------------------------------------------------- Microsoft Exchange Error -------------------------------------------------------- Failed to mount database 'mail2'. mail2FailedError: Couldn't mount the database that you specified. Specified database: mail2; Error code: An Active Manager operation failed. Error: The database action failed. Error: Operation failed with message: MapiExceptionCallFailed: Unable to mount database. (hr=0x80004005, ec=1011) [Database: mail2, Server: mail2.e0594.cn]. An Active Manager operation failed. Error: The database action failed. Error: Operation failed with message: MapiExceptionCallFailed: Unable to mount database. (hr=0x80004005, ec=1011) [Database: mail2, Server: mail2.e0594.cn] An Active Manager operation failed. Error: Operation failed with message: MapiExceptionCallFailed: Unable to mount database. (hr=0x80004005, ec=1011) [Server: mail2.e0594.cn] MapiExceptionCallFailed: Unable to mount database. (hr=0x80004005, ec=1011) Any suggestion? Thanks!

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• Large, high performance object or key/value store for HTTP serving on Linux

  - by Tommy

  I have a service that serves images to end users at a very high rate using plain HTTP. The images vary between 4 and 64kbytes, and there are 1.300.000.000 of them in total. The dataset is about 30TiB in size and changes (new objects, updates, deletes) make out less than 1% of the requests. The number of requests pr. second vary from 240 to 9000 and is dispersed pretty much all over, with few objects being especially "hot". As of now, these images are files on a ext3 filesystem distributed read only across a large amount of mid range servers. This poses several problems: Using a fileysystem is very inefficient since the metadata size is large, the inode/dentry cache is volatile on linux and some daemons tend to stat()/readdir() it's way through the directory structure, which in my case becomes very expensive. Updating the dataset is very time consuming and requires remounting between set A and B. The only reasonable handling is operating on the block device for backup, copying, etc. What I would like is a deamon that: speaks HTTP (get, put, delete and perhaps update) stores data it in an efficient structure. The index should remain in memory, and considering the amount of objects, the overhead must be small. The software should be able to handle massive connections with slow (if any) time needed to ramp up. Index should be read in memory at startup. Statistics would be nice, but not mandatory. I have experimented a bit with riak, redis, mongodb, kyoto and varnish with persistent storage, but I haven't had the chance to dig in really deep yet.

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• CIFS Mounting Permissions

  - by malco

  I have an issue that I;m going round in circles with, I hope you can help. The Set up: Server 1 (CIFS Client) - CentOS 6.3 AD integrated uing Samba/Winbind & idmap_ad Server 2 (CIFS Server) - CentOS 6.3 AD integrated uing Samba/Winbind & idmap_ad All users (apart from root) are AD authenticated and this, including groups, etc works happily. What's working: I have created a share on Server 2: [share2] path = /srv/samba/share2 writeable = yes Permissions on the share: drwxrwx---. 2 root domain users 4096 Oct 12 09:21 share2 I can log into a Windows machine as user5 (member of domain users) and everything works as it should, for example: If I create a file it shows the correct permissions and attributes on both the MS and the Linux sides. Where I Fall Down: I mount the share on Server 1 using: # mount //server2/share2 /mnt/share2/ -o username=cifsmount,password=blah,domain=blah Or using fstab: //server2/share2 /mnt/share2 cifs credentials=/blah/.creds 0 0 This mounts fine, but.... If I log su, or log onto server 1 as a normal user (say user5) and try to create a file I get: #touch test touch test touch: cannot touch `test': Permission denied Then if I check the folder the file was created but as the cifsmount user: -rw-r--r--. 1 cifsmount domain users 0 Oct 12 09:21 test I can rename, delete, move or copy stuff around as user5, I just can't create anything, what am I doing wrong? I'm guessing it's something to do with the mount action as when I log onto server2 as user5 and access the folder locally it all works as it should. Can anyone point me in the right direction?

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• Power Outage Interrupted Upgrade from Windows Vista Ultimate to 7 Ultimate, Reverted to Vista, Now Vista is failing... What Next?

  - by tednewk

  I was in the midst of what seemed to be a successful upgrade from Vista Ultimate to 7 Ultimate when there was a brief blackout. The upgrade failed and Windows reverted back to Vista. Now Vista is very slow to boot, has problems waking back-up from inactivity and quickly loses it's wireless connection. The wake-up problem manifests itself as the mouse is clearly shown on a black screen but I have no access to the Desktop or Taskbar or Explorer. Even Alt-Ctrl-Delete doesn't seem to work. No task menu, no reboot. Hitting the reset button reboots the machine with the usual Black Screen warnings offering Safe Mode. I tried to do a system restore to a point before the upgrade. That didn't seem to work. My guess is that my system is a mutant with parts of Vista and parts of 7 crashing each other. I would like avoid a clean install if at all possible to avoid reinstalling other software. What should I try now? My thoughts are: My a system back-up to lock the computer in place Trying a second 7 upgrade If that appears to be working make another back-up If not reload back-up and try a repairing Vista from DVD. If that appears to work make another back-up, let system stablize about a week then try 7 install again If that doesn't work are there any other options to try before settling for a clean install? Another complication, I am doing this by "remote control". I'm traveling with my job and I'll be talking my son through it over the phone. (Kind of like the landing the 747 cliche from all the 70's adventure shows!) So is there a way of simplifying the steps? Thanks Ted

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• Check for unique rows, but ignore one particular column

  - by user269148

  I have an XML document, that looks like this: Column A to S with headers, and there are 1922 rows. This is an backup of some SMS, and I want to get rid of duplicates. The problem is, that the Time in the readable_date header has been messed up. There is nothing wrong with the date, but the clock time is wrong, so I have split that column in three, with Year, day and clock. I know I can use a standard filter, but it only looks for unique rows in a single column. What I want to perform, is to make a row check similar to this: F(x)=Check if Column 2A to (infinate) is equal to Column 3A to (infinate), but ignore column(R). IF True, then delete Column 3A to (infinate) Otherwise Check IF column 2A to (infinate) is equal Column 4A to (infinate) and so on. I need to ignore a particular column in a row every time, and need to do this for a complete sheet. And the formula check should apply for every row, when the first one is done checking for duplicates... If anyone else has a better solution, please say so. Anyway, anyone who can help?

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• How do I force a restore over an existing database?

  - by Ian Boyd

  I have a database, and i want to force a restore over top of it. I check the option: Overwrite the existing database (WITH REPLACE) But, as expected, SSMS is unable to overwrite the existing database. Of course i don't want different filenames; i want to overwrite the existing database. How do i force a restore over an existing database? And for Google search crawler: File '%s' is claimed by '%s'(4) and '%s"(3). The WITH MOVE clause can be used to relocate one or more files. RESTORE DATABASE is terminating abnormally. (Microsoft SQL Server, Error: 3176) Update The script (before i deleted the database, because i needed to get it done) was: RESTORE DATABASE [HealthCareGovManager] FILE = N'HealthCareGovManager_Data', FILE = N'HealthCareGovManager_Archive', FILE = N'HealthCareGovManager_AuditLog' FROM DISK = N'D:\STAGING\HealthCareGovManager10232013.bak' WITH FILE = 1, MOVE N'HealthCareGovManager_Data' TO N'D:\CGI Data\HealthCareGovManager.MDF', MOVE N'HealthCareGovManager_Archive' TO N'D:\CGI Data\HealthCareGovManager.ndf', MOVE N'HealthCareGovManager_AuditLog' TO N'D:\CGI Data\HealthCareGovManager.ndf', MOVE N'HealthCareGovManager_Log' TO N'D:\CGI Data\HealthCareGovManager.LDF', NOUNLOAD, REPLACE, STATS = 10 I used the UI to delete the existing database, so that i could use the UI to force an overwrite of the (non)existing database. Hopefully there can be an answer so that the next guy can have an answer. No, nobody was in the context of the database (The error message from other connections is quite different from this error, and i only got to see this error after i killed the other connections).

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• Computer hangs at BIOS screen. Cannot enter setup

  - by d2jxp

  I have an HP Pavilion a6500f (it's a year out of warranty) and it's hanging on the blue HP BIOS screen. If I mash F10 while it's starting up, it will say "Entering Setup..." but I will see no results. It will hang there and not do anything. If I actually wait until I can see the screen and then hit F10, there's no response at all and the computer will sit at the BIOS menu. I've dusted and cleaned it out, reseated the memory, switched the RAM slots, and reset the CMOS battery using the reset jumper. I'm out of ideas. I'm pretty sure it's not a hard drive issue, since my problem is at the BIOS. After this post, I'll disconnect the hard drive and try to just boot without it. Anyone have any other ideas? Edit: Okay, so I tried disconnecting the hard drive and now I can get back into the BIOS. I reconnected it and I'm locked out again. So the problem is my hard drive.. I guess I should delete this post unless someone has any ideas as to what's wrong with the drive?

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• Why is the `remove rows` button not always present in MySQL Workbench?

  - by Shawn

  I'm using MySQL Workbench to remove rows from a table in my database. Most of the time, I will simply write a select statement, then select the rows I want to erase and use the remove rows button (circled in the screenshot below). But sometimes (quite often actually), the remove rows button does not appear. Instead, I get something like the screenshot below: The remove rows button is not there and the remove rows option is grayed out in the context menu, so basically, I can't remove rows... The only way I've found of solving this issue is to run the select query many times until the button appears (it usually does after 3 of 4 times). Does anyone know why this is happening? UPDATE Today, I've been running a select query dozens of times and the button never appears. It seems my incomprehensible workaround no longer works... Help! btw: Using a delete statement does work, though I would rather not have to write one for each row I want to remove as this happens quite frequently during development...

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

  - by PiotrK

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

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• Why not block ICMP?

  - by Agvorth

  I think I almost have my iptables setup complete on my CentOS 5.3 system. Here is my script... # Establish a clean slate iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT iptables -F # Flush all rules iptables -X # Delete all chains # Disable routing. Drop packets if they reach the end of the chain. iptables -P FORWARD DROP # Drop all packets with a bad state iptables -A INPUT -m state --state INVALID -j DROP # Accept any packets that have something to do with ones we've sent on outbound iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT # Accept any packets coming or going on localhost (this can be very important) iptables -A INPUT -i lo -j ACCEPT # Accept ICMP iptables -A INPUT -p icmp -j ACCEPT # Allow ssh iptables -A INPUT -p tcp --dport 22 -j ACCEPT # Allow httpd iptables -A INPUT -p tcp --dport 80 -j ACCEPT # Allow SSL iptables -A INPUT -p tcp --dport 443 -j ACCEPT # Block all other traffic iptables -A INPUT -j DROP For context, this machine is a Virtual Private Server Web app host. In a previous question, Lee B said that I should "lock down ICMP a bit more." Why not just block it altogether? What would happen if I did that (what bad thing would happen)? If I need to not block ICMP, how could I go about locking it down more?

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• Computer hangs at BIOS screen. Cannot enter setup.

  - by d2jxp

  I have an HP Pavilion a6500f (it's a year out of warranty) and it's hanging on the blue HP BIOS screen. If I mash F10 while it's starting up, it will say "Entering Setup..." but I will see no results. It will hang there and not do anything. If I actually wait until I can see the screen and then hit F10, there's no response at all and the computer will sit at the BIOS menu. I've dusted and cleaned it out, reseated the memory, switched the RAM slots, and reset the CMOS battery using the reset jumper. I'm out of ideas. I'm pretty sure it's not a hard drive issue, since my problem is at the BIOS. After this post, I'll disconnect the hard drive and try to just boot without it. Anyone have any other ideas? Edit: Okay, so I tried disconnecting the hard drive and now I can get back into the BIOS. I reconnected it and I'm locked out again. So the problem is my hard drive.. I guess I should delete this post unless someone has any ideas as to what's wrong with the drive?

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• How to implement a virtual server running Ubuntu inside a fileserver in windows?

  - by user541445

  I work in a company that has some limitations regarding their budget. They need client/server aplication. I can code the aplication, I've made mini tests on primordial applications that work. The thing is that they only have fileservers, and the application they need must be concurrent compliant, so the database must be in their local network (Fileserver is the only choice). So far, I have explored almost any option available, starting with: Desktop databases. Access (We have a license)(But concurreny is just not effective, besides it's a windows software, yuck). Sqlite (Nice, but since the information they manage is a lot, I've performed some concurrency tests with INSERTs and doing SELECTS at the same time). It fails, somehow it just stops inserting. Open office Base (I dismember a base office only to see that it was a file mode HSQLDB). I've tried, not concurrent at all. Etc (You name the Open source Desktop Database manager, and yes, I've tried that one.) Server databases Call me a stubborn person, but reading some server databases documentation say that their databases will work in a file mode. I've tried a lot of products. Postgres, MySQL, FireBird, H2, Derby, Oracle Express, IBM DB2 Express, etc. So, I really need a hand here, I've been doing this install/delete/depression thing with a lot of databases for 3 weeks, until I got with a crazy idea and I just came here to express it. So, my question comes down to this: Installing a light virtual OS software like Virtual PC and then installing in there a Server OS like an Ubuntu server inside that virtual software will work? Will it work 24/7 or when I close the virtual pc software? Will this work in a fileserver? Any suggestion, answer, critic to the place I work, crazy new concurrent database that will work in fileserver will be most than welcome.

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• Howto setup neocomplcache?

  - by eddy

  I just started using vim and saw a cool plugin: [neocomplcache].(http://www.vim.org/scripts/script.php?script_id=2620) My Problem is, that I can't get it to work properly. After installing, I took the example config from the help files of neocomplcache and added the lines to my .vimrc At first I wanted to create a simple latex file (there are snippets for tex). After typing "begi" there appears a menu, I can choose between the snippets with TAB or <C-n>. But how do I get them to expand? <C-k> does not work, but I don't understand why. ======== .vimrc: ======== .... " Plugin key-mappings. imap <C-k> <Plug>(neocomplcache_snippets_expand) smap <C-k> <Plug>(neocomplcache_snippets_expand) inoremap <expr><C-g> neocomplcache#undo_completion() inoremap <expr><C-l> neocomplcache#complete_common_string() " Recommended key-mappings. " <CR>: close popup and save indent. inoremap <expr><CR> neocomplcache#smart_close_popup() ."\<CR>" " <TAB>: completion. inoremap <expr><TAB> pumvisible() ? "\<C-n>" : "\<TAB>" " <C-h>, <BS>: close popup and delete backword char. inoremap <expr><C-h> neocomplcache#smart_close_popup()."\<C-h>" inoremap <expr><BS> neocomplcache#smart_close_popup()."\<C-h>" inoremap <expr><C-y> neocomplcache#close_popup() inoremap <expr><C-e> neocomplcache#cancel_popup() ...

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• Scenario - NTFS Symbolic Link or Junction?

  - by Unsigned

  Differences Absolute Relative File Directory UNC Symbolic link ? ? ? ? ? Junction ? x x ? x Scenario Let's assume we're creating a reparse point to create the redirect C:\SomeDir => D:\SomeDir Since this scenario only requires local, absolute paths, either a junction or symlink would work. In this situation, is there any advantage to using one or the other? Assume Windows 7 for the OS, disregarding backward-compatibility (prior to Vista, symlinks are not supported). Update I have found another difference. Symbolic Link - Link's permissions only affect delete/rename operations on the link itself, read/write access (to the target) is governed by the target's permissions Junction - Junction's permissions affect enumeration, revoking permissions on the junction will deny file listing through that junction, even if the target folder has more permissive ACLs The permissions make it interesting, as symlinks can allow legacy applications to access configuration files in UAC-restricted areas (such as %ProgramFiles%) without changing existing access permissions, by storing the files in a non-restricted location and creating symlinks in the restricted directory.

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• Ubuntu 8.04 wont reboot from script

  - by Littlejon

  I have a script that is run to backup a server via Rsync, after that script is run I want the server to reboot. My script is run as root from the Crontab at 3am in the morning. #!/bin/bash HOST="email" RSYNC_OPTS="-a -v -v --progress --stats --delete" RSYNC_DEST="10.0.0.10::$HOST" BACKUP_LIST="/etc /home /root" TIMESTAMP="/timestamp-bkup-start.chk" TIMESTAMP2="/timestamp-bkup-stop.chk" touch $TIMESTAMP rsync $RSYNC_OPTS $TIMESTAMP $RSYNC_DEST for BACKUP_ITEM in $BACKUP_LIST; do rsync $RSYNC_OPTS $BACKUP_ITEM $RSYNC_DEST done /etc/init.d/zimbra stop sleep 60s rsync $RSYNC_OPTS /opt $RSYNC_DEST touch $TIMESTAMP2 rsync $RSYNC_OPTS $TIMESTAMP2 $RSYNC_DEST echo `date +%Y%m%d%H%M` >> /var/log/reset reboot # $# shows number of args passed # $1 to access first variable #if [ $# -eq 1 ]; then # if [ $1 = "withreboot" ]; then # echo "rebooting..."; # echo `date +%Y%m%d%H%M` >> /var/log/reset # /sbin/reboot # fi #fi I have tried using init 6 rather then reboot. I have tried /sbin/reboot. I also have another basic script that just echos to the reset log and runs reboot without issue. It is just with the script above the server wont restart. If anyone has any theories that would be great as I have run out of idea. Thanks, Jon

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• logfile deleted on Oracle database how to re-create it?

  - by Daniel

  for my database assignment we were looking into 'database corruption' and I was asked to delete the second redo log file which I have done with the command: rm log02a.rdo this was in the $HOME/ORADATA/u03 directory. Now I started up my database using startup pfile=$PFILE nomount then I mounted it using the command alter database mount; now when I try to open it alter database open; it gives me the error: ORA-03113: end-of-file on communication channel Process ID: 22125 Session ID: 25 Serial number: 1 I am assuming this is because the second redo log file is missing. There is still log01a.rdo, but not the one I have deleted. How can I go about recovering this now so that I can open my database again? I have looked into the database created scripts, and it specified the log02a.rdo file to be size 10M and part of group 2. If I do select group#, member from v$logfile; I get: 1 /oradata/student_db/user06/ORADATA/u03/log01a.rdo 2 /oradata/student_db/user06/ORADATA/u03/log02a.rdo 3 /oradata/student_db/user06/ORADATA/u03/log03a.rdo 4 /oradata/student_db/user06/ORADATA/u03/log04a.rdo So it is part of group 2. If I try to add the log02a.rdo file again "already part of the database". If I drop group 2 and then add it again with these commands: ALTER DATABASE ADD LOGFILE GROUP 2 ('$HOME/ORADATA/u03/log02a.rdo') SIZE 10M; Nothing. Supposedly alters the database, but it still won't start up. Any ideas what I can do to re-create this and be able to open my database again?

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• Using awk to split text file every 10,000 lines

  - by Sneaky Wombat

  I have a large gzip'd text file. I'd like to something like: zcat BIGFILE.GZ | awk (snag 10,000 lines and redirect to...)|gzip -9 smallerPartFile.gz the awk part up there, I basically want it to take 10,000 lines and send it to gzip and then repeat until all lines in the original input file are consumed. I found a script that claims to do this, but when I run it on my files and then diff the original to the ones that were split and then merged, lines are missing. So, something is wrong with the awk part and I'm not sure what part is broken. Here's the code. Can someone tell me why this doesn't yield a file that can be split and merged and then diff'd to the original successfully? # Generate files part0.dat.gz, part1.dat.gz, etc. # restore with: zcat foo* | gzip -9 > restoredFoo.sql.gz (or something like that) prefix="foo" count=0 suffix=".sql" lines=10000 # Split every 10000 line. zcat /home/foo/foo.sql.gz | while true; do partname=${prefix}${count}${suffix} # Use awk to read the required number of lines from the input stream. awk -v lines=${lines} 'NR <= lines {print} NR == lines {exit}' >${partname} if [[ -s ${partname} ]]; then # Compress this part file. gzip -9 ${partname} (( ++count )) else # Last file generated is empty, delete it. rm -f ${partname} break fi done

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• Raspberry pi slows down my entire network

  - by gnusouth

  Whenever my Raspberry Pi is connected to the network (via ethernet) the entire network is slowed to a crawl. On my main computer, ping times for google.com go from ~10ms to ~200ms and it takes forever to load web pages. Connections are also slow on the Pi, with an apt-get update showing pathetic speeds in the order of 1KB/s. Turning off the Pi completely removes the drag from the network. I've tried static and dynamic IP addresses for the Pi, but both have the same problems. I'm currently using Raspbian (downloaded today), but also had this problem with Arch Linux. I've checked the connection's duplex with dmesg | grep -i duplex, which shows that the Pi's connection is running at 100Mbps, full-duplex, as expected. My modem/router is a Billion 7404VNPX (an Australian thing); relatively high-end, albeit a bit buggy at times (it will occassionally delete all its firewall settings). It assigns IPs in the range 192.168.1.1 to 192.168.1.20 and has 192.168.1.254 as its own IP. When I assign static IPs I tend to use the 192.168.1.200 area. Does anyone have any idea as to what could be causing this weird slowdown? Or any tests I could try? Thanks

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• which is best smart automatic file replication solution for cloud storage based systems.

  - by TORr0t

  I am looking for a solution for a project i am working on. We are developing a websystem where people can upload their files and other people can download it. (similar to rapidshare.com model) Problem is, some files can be demanded much more than other files. The scenerio is like: I have uploaded my birthday video and shared it with all of my friend, I have uploaded it to myproject.com and it was stored in one of the cluster which has 100mbit connection. Problem is, once all of my friends want to download the file, they cant download it since the bottleneck here is 100mbit which is 15MB per second, but i got 1000 friends and they can only download 15KB per second. I am not taking into account that the hdd is serving same files. My network infrastrucre is as follows: 1 gbit server(client) and connected to 4 Nodes of storage servers that have 100mbit connection. 1gbit server can handle the 1000 users traffic if one of storage node can stream more than 15MB per second to my 1gbit (client) server and visitor will stream directly from client server instead of storage nodes. I can do it by replicating the file into 2 nodes. But i dont want to replicate all files uploadded to my network since it is costing much more. So i need a cloud based system, which will push the files into replicated nodes automatically when demanded to those files are high, and when the demand is low, they will delete from other nodes and it will stay in only 1 node. I have looked to gluster and asked in their irc channel that, gluster cant do such a thing. It is only able to replicate all the files or none of the files. But i need it the cluster software to do it automatically. Any solutions ? (instead of recommending me amazon s3) S

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• What are good systems for managing PHP/MySQL infrastructure?

  - by sbrattla

  I work in a company which is about to migrate most applications from in-house custom built Java/Tomcat applications to Drupal. Due to company policies, applications and websites need to run on in-house servers. This means that we need infrastructure for Drupal (PHP/MySQL) applications. This must have been solved a million times already. I believe this is what web-hosting companies does every day. Even though we work on a much smaller scale than web-hosting companies, i assume it would make sense to look at the task as if we're going to have an internal small-scale web-hosting company. This means that the guys in IT operations could be "responsible" for "offering" web-hosting, while developers could use these "services". We have three environments; dev(elopment), test and prod(uction). It would make sense that developers could log in to a system and create/edit/delete dev and test sites as they'd like. Production sites should be available through the same system, but only available to IT ops. We need to work with clusters of web servers, meaning that an administration system should be capable of creating/editing/deleting sites across multiple servers. I know there's no "this is it" answer to my question; but what would be a good place to start to get going with this? Apart from the actual hardware, what would be a good administration system for this?

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• Can't start Windows 7 after cloning HDD

  - by Paul

  Brief description: cloned HDD1 - HDD2 HDD1 partition 1 boots HDD1 partition 2 boots HDD2 partition 1 boots HDD2 partition 2 doesn't boot Windows, but is bootable in general Now verbosely: In all the cases computer is the same. I have two Windows 7 installations on HDD1 - both are booting fine. I choose between them using standard Windows 7 boot loader menu. Technically there are 4 partitions: 100 MB Boot loader partition (active), Windows 7 copy 1 (25 GB), Windows 7 copy 2 (150 GB) and Working partition. All are primary. In past few days I tried to clone the whole HDD1 to HDD2 of the same size (but 2,5 inch form factor) as is using Minitool Partition wizard. Everything has been copied, all files are accessible, no faults in file system structure, even boot loader wasn't damaged and I hadn't to repair it. But I can boot only first installation of Windows 7 (it boots without issues). When I choose the second installation, I get immediately a completely black screen without any texts, cursors and other data. HDD isn't accessed after that. This black screen is sensitive to Ctrl-Alt-Delete which causes computer reboot. I did some experimenting: Installed Windows 7 to that partition - it booted fine. Then I renamed "Windows" to "Windows.old" and copied Windows directory from HDD1 as it was, using Far Manager, and got the same troubles - black screen. (Of course I performed renaming and copying from other copy of Windows). So, it seems that problems are inside this installation of Windows, somewhere in its files.

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• Backing up a Windos 7 partition from Macbook with no OS X

  - by mattcodes

  I have a 3 year macbook with Windows 7 installed as 40gb and OS X as 40gb (80gb HD). I want to remove OS X as Im at the limit of 40gb on Windows and I have not logged on to Mac OS X since installed Win7 (dont flame me). So I want to delete OS X partition and expand my win partition to 80gb BUT I still would like to be able to regularly (once a week/month) backup my Windows 7 partition - its took a while to setup everything up right - not just docs and programs - so when the hard drive dies I want to be able to restore the partition and boot away, (the daily volatile bits I can pull down from dropbox and project from soure control). With Mac OS X I could use Winclone - and this worked flawless last time the HD failed with XP but with the absence of OS X I will need something else. Im thinking can I use a Linux Live boot CD along with an external USB hard drive. Boot from CD and then dd? the partition to the USB? What linux distro live CD should I use? I say dd as if I know what am taking about (I dont) is this the best way to backup a partition (when it will be restored to same hardware as bootable) ? What command?

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• Win7 'locking' process/files/folders?

  - by Dynde

  I've had a fair bit problems with sometimes files/folders/processes being 'locked' by Windows. The weird thing is, it's not like the traditional sense, I think, where tools like UnlockIT and wholockme would work. It seems that just giving it a little often helps - making me think it could either be the HDD, the memory, or something in Windows. A scenario: I go into a folder - don't open anything at all, go back up, cut or drag-move the folder to someplace else, it says "Action can't be completed because the folder or a file in it is open in another program". Waiting sometimes 20 seconds sometimes a little longer, and I can move it. Another scenario is deleting a bunch of files in a folder, and it appears that everything is gone, but then suddenly after a few seconds an .exe file pops back up, and I can't delete it. Waiting a few minutes, then pressing refresh and it's gone. I have the strangest feeling that there's a problem with either HDD or memory. I already tried disabling Windows indexing service with no luck. Does anyone have any ideas? EDIT: I should say, that I have a very fast system, 16 GB DDR3 RAM, i7-2600k CPU, SSD main HDD, so I really should not be experiencing any sort of problems, where one might say that it's "reasonable" for the system not to respond right away. Edit2: And I updated SSD firmware a couple months ago, so it shouldn't be bad release FW either

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• Live Messenger SimilarityTable2 file

  - by adrianbanks

  I am trying to free up some space on my laptop's hard disk and am using a tool (SpaceMonger) that will show me a treemap of the whole disk. The problem I have comes from Live Messenger's SimilarityTable2 file. I have no idea what it is for, but I know that it is a sparse file, meaning that it shows as taking up 8GB of disk space, but actually only takes up 132KB of space on disk. The problem is that because SpaceMonger thinks this file is 8GB, it swamps the other files and takes up most of the treemap, making it hard to see the other files that really are large. Is this file safe to delete? If not, how do I make its actual size on disk match its reserved size? If that's not possible, how can I make SpaceMonger (or another treemap tool) use the real size of the file and not the reserved size? EDIT: I've just realised that I have some NTFS junctions set up, meaning that the same set of directories appear twice. Is there any way to stop this happening as well?

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