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• Connecting XRAID to Sunfire via LSI FC card - Drives not showing up

  - by Matthew Watson

  Hi, I've got a Sunfire T1000 machine ( Solaris 10 10/09 s10s_u8wos_08a SPARC ) with a LSI7404EP-LC fibre channel card in it. This is plugged into an XRAID. The system seems to have picked up the card > /usr/platform/`uname -i `/sbin/prtdiag IO Location Type Slot Path Name Model ----------- ----- ---- --------------------------------------------- ------------------------- --------- MB/PCIE0 PCIE 0 /pci@780/fibre-channel fibre-channel MB/PCIE0 PCIE 0 /pci@780/fibre-channel fibre-channel MB/NET0 PCIE MB /pci@7c0/pci@0/network@4 network-pci14e4,1668 MB/NET1 PCIE MB /pci@7c0/pci@0/network@4,1 network-pci14e4,1668 MB/NET2 PCIX MB /pci@7c0/pci@0/pci@8/network@1 network-pci108e,1648 MB/NET3 PCIX MB /pci@7c0/pci@0/pci@8/network@1,1 network-pci108e,1648 MB/PCIX PCIX MB /pci@7c0/pci@0/pci@8/scsi@2 scsi-pci1000,50 LSI,1064 However it doesn't seem to be able to see the xraid attached to it, lsiutil only reports the onboard SAS controller. > /usr/local/bin/lsiutil ~ LSI Logic MPT Configuration Utility, Version 1.62, January 14, 2009 1 MPT Port found Port Name Chip Vendor/Type/Rev MPT Rev Firmware Rev IOC 1. mpt0 LSI Logic SAS1064 A3 105 010a0000 0 Select a device: [1-1 or 0 to quit] I've tried adding the configuration to /kernal/drv/sd.conf and /kernal/drv/ssd.conf as per this thread, however format still cannot see any drives on the xraid. I'm not sure where to go next. Any suggestions? From what I've read..this should pretty much just eb plug it in and they show up in format..

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• apache2 mysql authentication module and SHA1 encryption

  - by Luca Rossi

  I found myself in a setup on where I need to enable some authentication method using mysql. I already have an user scheme. That user scheme is working like a charm with MD5 password and CRYPT, but when I turn to SHA1sum it says: [Fri Oct 26 00:03:20 2012] [error] Unsupported encryption type: Sha1sum No useful debug informations on log files. This is my setup and some info: debian6 apache and ssl installed packages: root@sistemichiocciola:/etc/apache2/mods-available# dpkg --list | grep apache ii apache2 2.2.16-6+squeeze8 Apache HTTP Server metapackage ii apache2-mpm-prefork 2.2.16-6+squeeze8 Apache HTTP Server - traditional non-threaded model ii apache2-utils 2.2.16-6+squeeze8 utility programs for webservers ii apache2.2-bin 2.2.16-6+squeeze8 Apache HTTP Server common binary files ii apache2.2-common 2.2.16-6+squeeze8 Apache HTTP Server common files ii libapache2-mod-auth-mysql 4.3.9-13+b1 Apache 2 module for MySQL authentication ii libapache2-mod-php5 5.3.3-7+squeeze14 server-side, HTML-embedded scripting language (Apache 2 module) root@sistemichiocciola:/etc/apache2/sites-enabled# dpkg --list | grep ssl ii libssl-dev 0.9.8o-4squeeze13 SSL development libraries, header files and documentation ii libssl0.9.8 0.9.8o-4squeeze13 SSL shared libraries ii openssl 0.9.8o-4squeeze13 Secure Socket Layer (SSL) binary and related cryptographic tools ii openssl-blacklist 0.5-2 list of blacklisted OpenSSL RSA keys ii ssl-cert 1.0.28 simple debconf wrapper for OpenSSL my vhost setup: AuthMySQL On Auth_MySQL_Host localhost Auth_MySQL_User XXX Auth_MySQL_Password YYY Auth_MySQL_DB users AuthName "Sistemi Chiocciola Sezione Informatica" AuthType Basic # require valid-user require group informatica Auth_MySQL_Encryption_Types Crypt Sha1sum AuthBasicAuthoritative Off AuthUserFile /dev/null Auth_MySQL_Password_Table users Auth_MYSQL_username_field email Auth_MYSQL_password_field password AuthMySQL_Empty_Passwords Off AuthMySQL_Group_Table http_groups Auth_MySQL_Group_Field user_group Have I missed a package/configuration or something?

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• Dante (SOCKS server) not working

  - by gregmac

  I'm trying to set up a SOCKS proxy using dante for testing purposes. However, I can't even get it to work with a web browser, after looking at several tutorials on how to do that. I've tried in both IE and Firefox, in both cases, using "Manual proxy configuration", leave everything blank except for SOCKS host, and then put in the IP of my proxy and the port number (1080). I just get "Server not found" / "Problems loading this page" and don't see anything in danted, even running in debug mode. If I do a "telnet 10.0.0.40 1080" I do see the connection open in danted debug output, so I know that much is working. Here's my config: logoutput: stdout /var/log/danted/danted.log internal: eth0 port = 1080 external: eth0 method: username none #rfc931 user.privileged: proxy user.notprivileged: nobody user.libwrap: nobody connecttimeout: 30 # on a lan, this should be enough if method is "none". client pass { from: 10.0.0.0/8 port 1-65535 to: 0.0.0.0/0 } client pass { from: 127.0.0.0/8 port 1-65535 to: 0.0.0.0/0 } client block { from: 0.0.0.0/0 to: 0.0.0.0/0 log: connect error } block { from: 0.0.0.0/0 to: 127.0.0.0/8 log: connect error } pass { from: 10.0.0.0/8 to: 0.0.0.0/0 protocol: tcp udp } pass { from: 127.0.0.0/8 to: 0.0.0.0/0 protocol: tcp udp } block { from: 0.0.0.0/0 to: 0.0.0.0/0 log: connect error } I'm sure I'm probably missing something simple, but I'm lost. I haven't even thought about SOCKS since the late 90's.

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• How do I configure custom URL handlers on OS X?

  - by cwd

  I've been reading a lot online about custom URL handlers / custom protocol handlers such as: Launching External Applications using Custom Protocols under OSX OS X URL handler to open links to local files I get that you can tell the system that a particular program is able to handle a certain scheme / protocol with the Info.plist file: <key>CFBundleURLTypes</key> <array> <dict> <key>CFBundleURLName</key> <string>Local File</string> <key>CFBundleURLSchemes</key> <array> <string>local</string> </array> </dict> </array> <key>NSUIElement</key> <true/> But if there are multiple applications that are capable of opening the same URL handler, such as mailto: how do you specify which one you want the system to use? There were some references to utilities like the More Internet preference pane which no longer seems to be available from the author's site. I did find it online by Googling but it seems a bit shaky - like it was written for an older OSX - perhaps Tiger. I haven't been able to find information on how to set the URL handler for protocols and custom protocols. I'm assuming there is a plist file somewhere that I can edit - or maybe there is a newer, better utility that works well with Mountain Lion?

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• Problems with word completion on Windows Mobile

  - by Rowland Shaw

  For "some reason" the word completion function on my windows mobile phone (HTC Diamond, rebadged as a T-Mobile MDA Compact IV (UK) running WM6.1 with HTC Touch Flo 3D) hasn't worked since one of my firends was taking a look at the phone (I remember him bitching about it being too obtrusive for him, as an iPhone fanboy). I've checked all the obvious settings ( Start Input Word Completion ) and everything looks set there; I tried a hard reset, to no avail and even tried upgrading the ROM t the latest from my network provider. I even tried walking into the store where I bought the phone, and the staff couldn't fix the issue. I still have my old handset, which also runs WM6.1 (a T-Mobile MDA Compact III (UK), albeit without Touch Flo 3D), and the word completion works on there, so I'm a little confused as to why I can't get it to work again on my new handset. Can anybody identify why this might not be working, or help me fix it? Edit: Even "Touch Input Settings" has both "Word Completion in T9 mode" and "Word Completion in ABC mode" checked. The full qwerty keyboard option is in T9 mode, and word completion works for this input method; It still does not work for my preferred, "Letter Recogniser" method.

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• How to embed Arial in PDF when PDF has Helvetica?

  - by Brooks Moses

  So, I've got a PDF file that's generated by a program that uses the Base 14 fonts, so that it contains "Helvetica" and "Times Roman". When I look at that in my copy of Acrobat 7.0 on Windows (for example), it shows these with Arial and Times New Roman. I'm fine with that. The issue is that I'd like to publish this PDF file on lulu.com, and they want all fonts embedded. Including the Base 14. I don't have a copy of Helvetica, so what seems the natural thing to do is substitute Arial for Helvetica and embed Arial. How can I do that? I tried using the Print feature in Acrobat (note: this is the full version, not Reader) to print to a PDF file using Adobe's "Print to PDF" printer driver, and selected the "Embed All Fonts" option in the print settings. This worked for the fonts that I had actual copies of, but instead of "printing" Arial for Helvetica -- which it would do if printing to a real printer -- it leaves all the Helvetica as Helvetica and doesn't embed it. Any suggestions for alternate ways to do this? What I really want is just a copy of my PDF file with ALL fonts embedded, and I'm quite happy if doing that means making one of the usual substitutions for the "Helvetica" that's in it. I'd be happiest if I can do that within Acrobat or other software that I have (pdftex, maybe?), but I'm willing to install another free utility if I need to.

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• Windows 7 libraries nightmare

  - by Lobuno

  In our active directory we deploy a policy to our clients where the personal directory (My documents) is redirected to a file server of ours \server\share\username\Documents In older systems everything worked fine. in Windows 7 some users are experimenting the following symptoms: The Documents library is EMPTY Where the documents library should be shown in Explorer an empty white icon is displayed. No caption. Right clicking in the Documents library to edit the folders that are part of the libraries brings the dialog up. However, that dialog is unusable. No folder is present there and clicking Add folder does nothing. Deleting the library and auto-creating it doesn't solve the problem The shared directory can be accessed via UNC paths and it can be mounted as a shared drive as well. The library is still broken. The shared drives are on a W2008 indexed server... Using the Windows Library tool utility doesn't solve the problem. What can the cause of this problem be and how can this be solved?

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• --log-slave-updates is OFF but updates received from master are still logged to slave binary log?

  - by quanta

  MySQL version 5.5.14 According to the document, by the default, slave does not log to its binary log any updates that are received from a master server. Here are my config. on the slave: # egrep 'bin|slave' /etc/my.cnf relay-log=mysqld-relay-bin log-bin = /var/log/mysql/mysql-bin binlog-format=MIXED sync_binlog = 1 log-bin-trust-function-creators = 1 mysql> show global variables like 'log_slave%'; +-------------------+-------+ | Variable_name | Value | +-------------------+-------+ | log_slave_updates | OFF | +-------------------+-------+ 1 row in set (0.01 sec) mysql> select @@log_slave_updates; +---------------------+ | @@log_slave_updates | +---------------------+ | 0 | +---------------------+ 1 row in set (0.00 sec) but slave still logs the updates that are received from a master to its binary logs, let's see the file size: -rw-rw---- 1 mysql mysql 37M Apr 1 01:00 /var/log/mysql/mysql-bin.001256 -rw-rw---- 1 mysql mysql 25M Apr 2 01:00 /var/log/mysql/mysql-bin.001257 -rw-rw---- 1 mysql mysql 46M Apr 3 01:00 /var/log/mysql/mysql-bin.001258 -rw-rw---- 1 mysql mysql 115M Apr 4 01:00 /var/log/mysql/mysql-bin.001259 -rw-rw---- 1 mysql mysql 105M Apr 4 18:54 /var/log/mysql/mysql-bin.001260 and the sample query when reading these binary files with mysqlbinlog utility: #120404 19:08:57 server id 3 end_log_pos 110324763 Query thread_id=382435 exec_time=0 error_code=0 SET TIMESTAMP=1333541337/*!*/; INSERT INTO norep_SplitValues VALUES ( NAME_CONST('cur_string',_utf8'118212' COLLATE 'utf8_general_ci')) /*!*/; # at 110324763 Did I miss something?

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• Is there a free XML viewer to do "pivot tables"

  - by FumbleFingers

  I have an *.xml file on a PC running Windows XP, with a structure something like... <movies id="my movies" <movie name="Unforgiven" <people star="Clint Eastwood" director="Clint Eastwood"/> </movie> <movie name="A Fistful of Dollars" <people star="Clint Eastwood" director="Sergio Leone"/> </movie> <movie name="J Edgar" <people star="Leonardo DiCaprio" director="Clint Eastwood"/> </movie> </movies> I want to open this file in a viewer utility which will show one line per movie, filtered by a condition such as director="Clint Eastwood", including the relevant value for movie name on each line. Note - that's just an example. My actual file has thousands of lines, each possibly several hundred bytes long, and there are many more levels and named values. The important thing is I want to apply a filter for a specified value of some field at some level. And I want to see one line for every case where that value occurs, showing the values for any fields I specify, even if they're stored at higher levels. I may be mistaken in saying what I want is a "pivot table" - I don't know what I should call it.

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• Automated Scanning for Corrupted Archive Files

  - by Synetech inc.

  Hi, I have all kinds of files that I have downloaded from everywhere over the years scattered around my hard drives. I’m in the process of trying to organize them all and have run into a problem. Sometimes a file was not downloaded correctly (this was a big issue when Chromium first came out) and is thus corrupt. For media files, this is relatively simple to determine (it requires actually opening and examining the file). For executables or other binaries, it is relatively difficult (executables may or may not crash, other binaries could be completely unknown). Archive files (eg zip, rar, 7z, exe, ace, etc.) however should be pretty simple, they have a built-in corruption detection facility. My problem now is that I really don’t want to open and test each and every single archived file throughout my drive; that would be a nightmare. I’m looking for a utility that can automate the process. Is there a program that can scan archive files on a drive and list the ones that are corrupt? Thanks a lot.

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• Computer locking up, looking for bootable hardware diagnostic tool.

  - by Carl Menke

  Well today I helped my friend build a computer. All went pretty well until we got to installing Win7. Thing is, we thought, it was crashing constantly. I adjusted pretty much every setting in the BIOS and removed as much hardware as possible to try and prevent a crash. No dice. So far I've tried running an Ubuntu live cd without the harddrive installed. Nope, crashed on boot. And then I just tried Microsoft's ram utility disk and it eventually locked up on that (the ram passed though). So it seems to me like it's either the CPU (AMD PhenomII x3) or the motherboard that could be bad, but I don't know how to test them individually for problems. I thought it could be a overheating issue, but the BIOS reports that the CPU temp is fine idling around 34C. Any advice or diagnostic disk that could help me out? TL;DR: Computer locks up frequently during use (cannot even boot/install an operating system), memory is fine, probably CPU or Mobo, BIOS says CPU temps are fine. What should I try?

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• Rebuild Apple RAID set

  - by Clinton Blackmore

  We have a Mac Pro tower with an Apple RAID card in it using third party drives. When one drive failed, we replaced it and the RAID 5 set was nearly done rebuilding when the computer was rebooted. It did not come back up. We are now booting up off of a different internal volume, and have three (third-party) drives of identical spec (including revision and firmware) in the box. One of the drives is a global spare; the other two are recognized as belong to a RAID set but are in "Roaming" mode. The intention is to recreate the three-drive RAID set using the data on the two drives that are good. When we tell the system to create a RAID 5 using the three drives, it tells us that it'll create a RAID set but everything will be lost. There are no obvious options to rebuild a RAID using the two good drives and incorporating the third drive in Apple's RAID Utility, and we've looked through the options for the raidutil command. Fortunately, all important data is backed up, and we can rebuild from scratch, but, is there any way to make the RAIDset work again?

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• Docs for OpenSSH CA-based certificate based authentication

  - by Zoredache

  OpenSSH 5.4 added a new method for certificate authentication (changes). * Add support for certificate authentication of users and hosts using a new, minimal OpenSSH certificate format (not X.509). Certificates contain a public key, identity information and some validity constraints and are signed with a standard SSH public key using ssh-keygen(1). CA keys may be marked as trusted in authorized_keys or via a TrustedUserCAKeys option in sshd_config(5) (for user authentication), or in known_hosts (for host authentication). Documentation for certificate support may be found in ssh-keygen(1), sshd(8) and ssh(1) and a description of the protocol extensions in PROTOCOL.certkeys. Is there any guides or documentation beyond what is mentioned in the ssh-keygen man-page? The man page covers how to generate certificate and use them, but it doesn't really seem to provide much information about the certificate authority setup. For example, can I sign the keys with an intermediate CA, and have the server trust the parent CA? This comment about the new feature seems to mean that I could setup my servers to trust the CA, then setup a method to sign keys, and then users would not have to publish their individual keys on the server. This also seems to support key expiration, which is great since getting rid of old/invalid keys is more difficult then it should be. But I am hoping to find some more documentation about describe the total configuration CA, SSH server, and SSH client settings needed to make this work.

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• Copy from CDROM is very slow in Ubuntu

  - by ???

  I'm using the command to copy CDROM image: # dd if=/dev/sr0 of=./maverick.iso But it's very slow, at about 350k bytes/sec. I've searched the google, and try the command # hdparm -vi /dev/sr0 /dev/sr0: HDIO_DRIVE_CMD(identify) failed: Bad address IO_support = 1 (32-bit) readonly = 0 (off) readahead = 256 (on) HDIO_GETGEO failed: Inappropriate ioctl for device Model=DVD-ROM UJDA775, FwRev=DA03, SerialNo= Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=unknown, MaxMultSect=0 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 IORDY=yes, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 AdvancedPM=no Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3: ATA/ATAPI-1,2,3,4,5 * signifies the current active mode Seems like DMA is already on. And a device test gives: # hdparm -t /dev/sr0 /dev/sr0: Timing buffered disk reads: 2 MB in 6.58 seconds = 311.10 kB/sec # sudo hdparm -tT /dev/sr0 /dev/sr0: Timing cached reads: 2 MB in 2.69 seconds = 760.96 kB/sec Timing buffered disk reads: m 4 MB in 5.19 seconds = 789.09 kB/sec The CD-ROM device and disc should be okay because I can copy it very fast in Windows, using UltraISO utility. So I guess there is something not configured right in Ubuntu, is it?

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• Windows 8.1 - Won't boot (0xc000000f), bcdedit fails

  - by user3014097

  I’m pretty much stuck at this point. So, backstory: Windows was installed on one of the SSDs currently in my tower. I bought a new SSD to install Windows (8.1 64 bit) on. Windows installation went fine, booted up, and formatted the old SSD from within Windows (this seems to have been a mistake, but I didn’t realize that at the time). Despite formatting the old SSD, whenever I tried to boot I was told that there were 2 Windows installations. Apparently, when I formatted the old drive, not all of the partitions were removed. So, I booted up with the repair utility, went into cmd, and deleted the non-primary partitions on the old SSD (there were 2 – think they were system and recovery, although I’m forgetting now). Reboot – computer won’t boot. Getting the 0xc000000f “The boot selection failed because a required device is inaccessible” error. Troubleshooting so far: Automatic repair doesn’t fix anything (I’ve never had luck with it though) If I go to install a new version of Windows, the drives and partitions are all there. The SSD is functioning, I at least know that. I’ve essentially gone through this guide: https://neosmart.net/wiki/recovering-windows-bootloader/ Unfortunately, I’m not getting anywhere. I’m not even entirely sure how to describe the errors I’m getting, so I’ve just included pictures of every step (I can't actually post them though so I just included a photobucket link). http://s319.photobucket.com/user/DGalt11/library/Computer%20Issue Am I completely screwed here (i.e. reformat and reinstall?)? Thanks

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• Warning for "Reallocated Event Count" S.M.A.R.T. attribute with a new/unused drive. How serious is t

  - by Developer Art

  I've just looked at the health status of my old 2,5 inch 500 Gb Fujitsu drive with a popular "HD Tune" utility. It shows a warning for the "Reallocated Event Count" property. How serious is that? The thing is that the drive is practically new. I pulled it out of a new laptop over a year ago and never used it since. Right now it only has 53 "Power On" hours which sounds about right since I only had it running a few evenings overnight before switching it for something more performant. Does this warning indicate that the drive is likely to fail some time in the future? I'm somewhat perplexed since the drive is effectively unused. What is more, I have arranged with somebody to buy off this drive since I don't really need. It is 12,5 mm thick (with 3 plates) meaning it doesn't fit into an external enclosure which makes it quite useless to me. Can I give away the drive without having it on my conscience or better cancel the deal? In other words, can the drive be used safely for years to come or better throw it away? I'm running a sector test now to see if there are any real problems. Will post the results as soon as they're available.

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• Can I tell if crashplan has backed up a particular file in a particular state?

  - by Chris Cogdon

  I would like to be able to tell, programmatically, if CrashPlan has backed-up a particular file, including the current updates to that file. I.e., that the current contents of a file are backed up. It's relatively easy to tell when CrashPlan last backed up a file: its file name appears in /usr/local/crashplan/log/backup_files.log.0, and with some accuracy, I could compare the backup time with the last modification time to the file, but that method appears to be somewhat dubious. A couple of methods I could think of, but I don't know how: Compare the current file to CrashPlan's metadata about that file. This needs knowledge about the format of CrashPlan's "cache" files as well as the hashing system used. This might be achievable through the CLI, but the CLI is just a portal into the GUI, and I need something that's scriptable. Restore the file to a temporary directory, and compare it. Unfortunately, there is no CLI to do restores; the GUI is the only way. I'll describe what I'm trying to achieve. It would be nice to know how to do the above, even if there are alternative methods for the following: I'm using CrashPlan for continuous backups to my PostgreSQL database, using WAL archives. In the current configuration, the archive command copies the files to an archive directory, which is backed up by CrashPlan. Every so often I manually confirm (or just trust) a group of WALs are backed up, and remove them from the archive directory, and occasionally do a restore through the GUI to ensure I can retrieve current and "deleted" WALs. The xlog directory is backed-up, too, so I have a good chance of doing a near-full restore even if a particular xlog hasn't been archived by PostgreSQL yet. I'd like to be able to automate this process, which necessitates either confirming the backup status and recency, or automating a restore for comparison purposes. (As a bonus, if the method is trustworthy, I could turn the "archive_command" from "copy to archive directory" into "confirm CrashPlan has backed up the current version", and do away with the archive directory completely). (And, yes, I'm doing regular pg_dumpall's, in addition to the above.)

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• How to set only specific nginx server block into maintenance mode programmatically

  - by Ville Mattila

  I am looking for a solution to automate one of our application's deployment process. In the beginning of deployment, I would like to programmatically set the specified server into maintenance mode and finally after the deployment has been completed, remove the maintenance mode flag from the nginx server. By maintenance mode, I mean that nginx should response with HTTP Response Code 503 to all the requests (with possible custom page). I know how to set the server block to respond with 503 code (see http://www.cyberciti.biz/faq/custom-nginx-maintenance-page-with-http503/) but the question is about how to do this programmatically and most efficiently. Two options have came to my mind: Option 1: At the beginning of the deployment process, write a maintenance file into document root and conditionally check an existence of the maintenance file in nginx server config: server { if (-f $document_root/in_maintenance_mode) { return 503; } } This method contains certain overhead as the file existence is checked for each request. Is it possible to check the file existence only when loading the nginx config? Option 2: Deployment script replaces the whole nginx server configuration file with a maintenance version and swaps it back in the end of the deployment. If this method is used, I am concerned about possible other automation processes like puppet that may be override the maintenance configuration file.

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• Oracle with Kerberos authentication and Windows 2003 Server as KDC

  - by Supaplex

  Hello everyone. I am running Oracle 10.2 on a Windows 2003 Server SP2 which is also the domain controller on the network. I wish to switch authentication method from NTS to Kerberos. I have spent a lot of time trying to configure Oracle with Kerberos authentication from the Oracle Advanced Security option from the Net Manager utility. I have disabled NTS so Kerberos is promoted as the preferred authentication method. But as soon as the configuration is saved from Net Manager and I restart the Oracle server service, Oracle will not start. I don't know what Oracle is complaining about, because I don't know where to look for the Oracle error log. My first question is: how can I figure out what's bugging Oracle? My second question: is there a good tutorial for setting up Oracle on a Windows 2003 with Kerberos Authentication, where the Windows 2003 Server is the KDC? Maybe there is a book I can get? I have read Oracles own guide, but it is mostly for Linux/Unix. Thanks a lot!

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• Setting kernel memory for installing postgresql

  - by Matthieu Taymans

  My question is about setting the kernel shared memory for installing postgresql on mac osx 10.6.8. In the readme file of postgresql it is said: Shared Memory PostgreSQL uses shared memory extensively for caching and inter-process communication. Unfortunately, the default configuration of Mac OS X does not allow suitable amounts of shared memory to be created to run the database server. Before running the installation, please ensure that your system is configured to allow the use of larger amounts of shared memory. Note that this does not 'reserve' any memory so it is safe to configure much higher values than you might initially need. You can do this by editting the file /etc/sysctl.conf - e.g. % sudo vi /etc/sysctl.conf On a MacBook Pro with 2GB of RAM, the author's sysctl.conf contains: kern.sysv.shmmax=1610612736 kern.sysv.shmall=393216 kern.sysv.shmmin=1 kern.sysv.shmmni=32 kern.sysv.shmseg=8 kern.maxprocperuid=512 kern.maxproc=2048 Note that (kern.sysv.shmall * 4096) should be greater than or equal to kern.sysv.shmmax. kern.sysv.shmmax must also be a multiple of 4096. Once you have edited (or created) the file, reboot before continuing with the installation. If you wish to check the settings currently being used by the kernel, you can use the sysctl utility: % sysctl -a The database server can now be installed. I'm a real beginner with all this but need to instal postgresql for academic purposes do you know how i can set this kernel shared memory. Won't that be harmful for my system? Thank you in advance. Matthieu

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• windows 7: Event 55 The file system structure on the disk is corrupt and unusable

  - by Radio

  Here is a real bad one! Windows 7 RTM with SP1 installed [Version 6.1.7601]. Recently tried to delete some folder on my hard drive and Windows prompted "Error 0x80070570: The file or directory is corrupted and unreadable", and at the same time placed an Event 55 describing "The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on \Device\HarddiskVolume2." Ran chkdsk, first with /f option, then with /r option. Result in both cases was: no errors found, 0 bad sectors. No problems chkdsk found at all! Went through StackExchange, Google and spent over 6 hours on this. Still cannot figure out the problem. Re-installing/Re-Formatting is not an option! What did I try: Hotfix - Windows6.1-KB982927-x64.msu - gave me an error about incompatibility with my computer, however it totally matches my system. CRC of hotfix was ok. Windows Repair Console found startup errors and fixed those, but this didn't help an issue, even by running chkdsk c: /R from it. http://support.microsoft.com/kb/246026 does not promise anything good. sfc /scannow does not help too. Replaced hard drive by cloning an old one using True Image, repeated all steps above. At the same time, some minor glitches started to appear in my Windows, like side panel and notification area settings are getting reset. Goal is to delete the folder and get rid of Event 55. Sounds like NTFS bug. Please help. This is completely ridiculous.

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• Home server hard drive: 186k start-stop cycles in 325 days?

  - by j-g-faustus

  I set up a home server about a year ago, using Ubuntu server (10.04 LTS at the moment), four disks in RAID 5 for storage (WD Green 1.5 TB) and a laptop drive for the OS. Today the output of smartctl, a command line utility for checking the SMART attributes of a hard drive, tells me that the primary OS drive has had no less than 186,000 start-stop cycles in 325 days and may be nearing the end of its lifespan. The smartctl output is in "normalized values", in this case a number between 200 and 000, where 200 is "brand new" and 000 means "worn out". My disk gets 001. So I wonder what happened: 186k start/stop cycles in 7820 hours is about one start/stop per 2.5 minutes around the clock. This seems somewhat excessive for a computer that sees actual use once or twice per day. (The RAID disks are normal, averaging to one start/stop per day, as expected.) Does anyone have similar experiences, or pointers to what might be the issue here? Specifically I'd like to know Why the massive start/stop count? Do I have some sort of configuration issue? Could there be a background service that is causing trouble? Could having a laptop disk as the OS drive be part of the problem? Can anyone confirm or deny this? Here is the /etc/hdparm.conf configuration /dev/sda { apm = 127 spindown_time = 120 } and the most relevant parts of smartctl --attributes /dev/sda: smartctl version 5.38 [x86_64-unknown-linux-gnu] Copyright (C) 2002-8 Bruce Allen === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 001 001 000 Old_age Always - 185875 9 Power_On_Hours 0x0032 090 090 000 Old_age Always - 7820 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 109 193 Load_Cycle_Count 0x0032 118 118 000 Old_age Always - 246833 194 Temperature_Celsius 0x0022 107 098 000 Old_age Always - 36 As I generally prefer my drives to last more than a year, any advice is appreciated.

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• Is wiper.sh working?

  - by Aleksander Blomskøld

  I'm setting up a server running Ubuntu Precise, and I'm trying to verify if SSD TRIM is working. fstrim is failing: ~ sudo fstrim -v / fstrim: /: FITRIM ioctl failed: Operation not supported So I tried wiper.sh in hdparm: wiper-3.5 sudo ./wiper.sh --verbose --commit /dev/sda1 wiper.sh: Linux SATA SSD TRIM utility, version 3.5, by Mark Lord. rootdev=/dev/sda1 fsmode2: fsmode=read-write /: fstype=ext4 freesize = 169502088 KB, reserved = 1695020 KB Preparing for online TRIM of free space on /dev/sda1 (ext4 mounted read-write at /). This operation could silently destroy your data. Are you sure (y/N)? y Creating temporary file (167807068 KB).. Syncing disks.. Beginning TRIM operations.. get_trimlist=/sbin/hdparm --fibmap WIPER_TMPFILE.11503 /dev/sda: trimming 3211263 sectors from 64 ranges succeeded trimming 3571713 sectors from 64 ranges succeeded trimming 3915776 sectors from 64 ranges succeeded (...) trimming 3657913 sectors from 60 ranges succeeded Removing temporary file.. Syncing disks.. Done. It seems to be working, but I'm wondering if it really is. Are there any cases where wiper.sh should work when fstrim isn't? Is there any way I can check if the TRIMing actually has succeeded (other than trusting the wiper.sh-log)?

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• Is there a way to avoid Wacom Control Panel to stop showing in certain cases ?

  - by S.gfx

  This is the problem: Suddenly, you double click on desktop wacom tablet settings icon, and it wont show the dialog. It appears to be loaded as it's shown down in the windows taskbar. I suspect is caused by change of resolution or some setting, maybe suddenly it sets the origin of the panel dialog at some 3000 thosand pixels to the right or something. I have digged that wacom_tablet.dat file to see if I fix it changing some value there, but looks like a log, a history, more than a ini for settings... And anyway does not solve it. My solution is having always a very complete settings file done and backed up to restore (with wacom utility for this, which in previous driver versions did not exist) when this happens, but is counter productive: You change the settings even per each project(and software) needs. I have seen it happenning with Cintiq 12", intuos4 A6, Graphires, Intuos 1. Is just me, doing something weird every time? I doubt it, is normal use, I am amazed that seems no one else had this prob(or nobody asked), happens often with typical use. Maybe is because am setting a shortcut in the desktop? Weird as it works perfect till some random moment... (Have digged Wacom's forums and FAQs, then here, but nothing related to it... Neither in "related questions".) The thing happens in Win XP, 7, etc. Done so during years in my experience, and several times at work, which is worse.

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• Windows Server NTFS volume list file name encodings and any illegal file names

  - by benbradley

  I'm having to deal with a Windows Server (NTFS) file server and our backup application appears to be failing with certain files. According to this https://en.wikipedia.org/wiki/NTFS#Internals NTFS apparently supports file names encoded in UTF-16 but according to their support team, our backup application only supports UTF-8. I'd like to confirm whether this is actually the problem by seeing the file name encoding for myself. The files that are failing appear to be using plain English A-Z letters and other ASCII characters. No accents or non-English letters etc. I suppose even though the letters appear to be plain A-Z the file name could still be encoded in UTF-16. Does anyone know of a utility or script that can recursively go through all files in a directory and show the encoding of the file name? Then I could try renaming to UTF-8 to see if the backup can proceed. I'm not a Windows developer so can't write this up myself. Presumably the encoding of the file name should be stored in the FS somewhere and therefore it should be possible to expose this.

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