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• MySQL InnoDB Corruption after power outage, possible to recover?

  - by Tim Hackett

  Hey Guys, I recently started trying to get Redmine up and running after a power outage that seems to have corrupted our InnoDB database in MySQL. Redmine had an extensive set of documentation that I would like to get even if redmine isn't able to run. The service fails on startup. I have tried inserting innodb_force_recovery = 4 per the documentation from the url in the error log. (also tried 1 thru 6 as I have backed up all directories after the corruption) I have verified through "mysqld-nt --print-defaults" that it is starting with the recovery option in the params. The machine is running Windows Server 2003 SP2, Xeon E5335 with 2GB RAM, MySQL is not mirrored to another machine, nor is the machine a mirror. I do not have any backups because the previous person did not set them up. Here is the error log: InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 100308 14:50:01 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 100308 14:50:02 InnoDB: Error: page 7 log sequence number 0 935521175 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. 100308 14:50:02 InnoDB: Error: page 2 log sequence number 0 935517607 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. 100308 14:50:02 InnoDB: Error: page 11 log sequence number 0 935517607 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. 100308 14:50:02 InnoDB: Error: page 5 log sequence number 0 972973045 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. 100308 14:50:02 InnoDB: Error: page 6 log sequence number 0 972984051 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. 100308 14:50:02 InnoDB: Error: page 1577 log sequence number 0 972737368 InnoDB: is in the future! Current system log sequence number 0 933419020. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: for more information. InnoDB: Error: trying to access page number 4294965119 in space 0, InnoDB: space name .\ibdata1, InnoDB: which is outside the tablespace bounds. InnoDB: Byte offset 0, len 16384, i/o type 10. InnoDB: If you get this error at mysqld startup, please check that InnoDB: your my.cnf matches the ibdata files that you have in the InnoDB: MySQL server. 100308 14:50:02InnoDB: Assertion failure in thread 960 in file .\fil\fil0fil.c line 3959 InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: about forcing recovery. 100308 14:50:02 [ERROR] mysqld-nt: Got signal 11. Aborting! 100308 14:50:02 [ERROR] Aborting 100308 14:50:02 [Note] mysqld-nt: Shutdown complete

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• Can't login to Manager App in Tomcat 6.0.18

  - by Rafael Almeida

  Folks, I can't login to the manager app (localhost:8080/manager/html) in my Tomcat. More specifically, it asks for my username and password, and the ones supposed to be correct aren't accepted. Here's what I already checked: I tried editing my conf/tomcat-users.xml to add my user/role. Here's the current content of this file: <?xml version='1.0' encoding='utf-8'?> <tomcat-users> <role rolename="manager"/> <user username="tomcat" password="s3cret" roles="manager"/> </tomcat-users> I thought that maybe it wasn't looking up on this XML, but elsewhere. So, I came to know about Realms. The Realm part of my configuration is now: < Realm className="org.apache.catalina.realm.MemoryRealm" / ( please ignore the space before Realm, for some reason this site isn't accepting the literal tag ) What am I missing?

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• Campus Network Design - Firewalls

  - by user3081239

  I am designing a campus network, and the design looks like this: LINX is The London Internet Exchange and JANET is Joint Academic Network. My goal is an almost-fully redundant with high availability, because it will have to support about 15k people, including academic staff, administrative staff and students. I have read some documents in the process , but I am still not sure about some aspects. I want to dedicate this one to firewalls: what are the driving factors in deciding to employ a dedicated firewall, instead of an embedded firewall in the border router? From what I can see, an embedded firewall has these advantages: Easier to maintain Better integration One less hop Less space requirement Cheaper Dedicated firewall has the advantage of being modular. Is there anything else? What am I missing?

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• what service to restart for /var/log/auth.log to start

  - by Bond

  Here is a situation since the log files on my server had grown to several Gigabytes I took a backup of directory /var/log and then manually when to each subdirectory of /var/log and the files which were big in size I did cat > /var/log/file_which_is_big press 2 times enter key (basically over wrote those files with a blank space) and then Ctrl+C So basically I over wrote those files to be blank. Now when I open /var/log/auth.log I don't see any entry (which is expected also since I over wrote) but when I exit the SSH session and login again then also I do not see any entry in auth.log is there any way other than rebooting the machine to make sure I keep getting the entries in /var/log/auth.log I am not sure which service writes in this file. This is a Ubuntu 10.04 server.

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• Linux partitioning problem

  - by Claudiu

  I am using cfdisk to repartition my hdd as from OS install I only got 1 big partition a swap. I wanted to resize the big partition to 1 GB /boot and use the rest of the space for an extended partition. After I do cfdisk, I recheck the partitions with fdisk -l and I get these: Disk /dev/sda: 320 GB, 320070320640 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda3 1 38455 308881755 f Extended LBA Warning: Partition 3 does not end on cylinder boundary. /dev/sda2 38455 38698 1951897 82 Linux swap /dev/sda1 * 38699 38913 311349654 83 Linux My problem is the Warning message, I think I know the cause, I think its because of sda1 Blocks size. How could that be soo big if Start and End interval is small?

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• Portable server room air-con options

  - by Bridgette

  We are looking for portable industrial aircond for our server room which whould blow hot air to the sealing cavity, split-system is not an option (http://www.ikoo.com.au/Aircond.png). Something exactly like this would be ideal, but unfortunately not available in AUS: http://www.apc.com/resource/include/techspec_index.cfm?base_sku=ACPA4000&ISOCountrycode=us http://www.apcmedia.com/salestools/ASTE-6Z2RUU_R1_EN.pdf. So we pretty much looking for competing products to the APC's NetworkAIR PA4000 available in AU. ? We currently have 3 x DeLonghi Penguino PACT120, but space is limited and getting more of these is prob not ideal.

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• Optimum no./size partitions for Windows 7

  - by Pat. Mitchell

  I plan to install a 500GB drive in my notebook (HP dv2613tu/1.5gHz/4MB RAM) and need advice about optimum size and number of partitions to create. Ideally looking for the following: OS (Windows 7 Ultimate) Swap file Applications Data ??? As a long time Mac user I'm not nearly as informed about Windows. I could leave everything as a single partition, but am seeking maximum performance and efficiency from my system (which won't be changing anytime soon). So, would separate partitions help with this aim? And given my usual habit of accumulating stuff, I want to reserve most space for Applications and Data. I've also set myself a project over the next couple of years of digitizing the whole of my 35 y.o. collection of slides and photographs from my travelling days. Thanks. Pat. Mitchell

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• Burn DVD mastered format DVD+R

  - by Zeus

  Using windows Vista, can I write DVD+R discs using mastered format? I've followed the instructions here But when I get to step 6, it gives an error "There was an error burning this disc. The disc might no longer be usable" There are no dollar signs in my files or extensions, and I have plenty of free space on my HD. I can successfully make a data disc using "live" format. Unfortunately my colleges home (XP) PC is unable to read it, despite the fact that it works on other XP machines at work... so I thought I'd try making a mastered one for greater compatibility. Any ideas?

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• Recover lost NTFS partition on SSD

  - by Emil

  Hello, About 2 month ago I upgraded my Dell Latitude E6500 laptop with a Corsair Force F120 SSD drive. Everything worked well until about a week or so back. I started the computer and was faced with a beep and a message saying "No boot sector on Internal HDD (IRRT). No bootable devices". Since I figured that the boot sector had somehow got corrupt I tried booting from the Windows 7 dvd in order to repair the boot sector. But the Windows 7 installation program only found a blank drive with 111GB of unallocated space. I panicked and brought the drive with me to work to let a colleague have a look at it. We made a disk image of the entire drive and ran the drive through Testdisk in Linux. Testdisk did not find any partitions. It appears that the drive has been completely erased... What has happened? What is causing this behavior on an SSD?

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• Most efficient way to connect an ISAPI Dll to a windows service

  - by Mike Trader

  I am writing a custom server for a client. They want scalability so I must use a thread pool and probably I/O completion port to regulate it. The main requirement is that a windows service manage the HTTP requests for a number of reasons. An example of one would be that a client session spans many requests and continuity must be maintained. Another would be that the ISAPI Dll will be in the IIS address space and so it's code will be lean and very carefully implemented. The extensive processing in the Windows service may get unruly for the duration of the lengthy development. If the service crashes it will not take out IIS. Anyway, the remaining decision is how to have these two processes communicate. We have talked about pipes, tcp, global memory and even a single pipe with multiplexed data ala FastCGI. Would love to hear anyones experience with a decision like this.

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• what is acceptable datastore latency on VMware ESXi host?

  - by BeowulfNode42

  Looking at our performance figures on our existing VMware ESXi 4.1 host at the Datastore/Real-time performance data Write Latency Avg 14 ms Max 41 ms Read Latency Avg 4.5 ms Max 12 ms People don't seem to be complaining too much about it being slow with those numbers. But how much higher could they get before people found it to be a problem? We are reviewing our head office systems due to running low on storage space, and are tossing up between buying a 2nd VM host with DAS or buying some sort of NAS for SMB file shares in the near term and maybe running VMs from it in the longer term. Currently we have just under 40 staff at head office with 9 smaller branches spread across the country. Head office is runnning in an MS RDS session based environment with linux ERP and mail systems. In total 22 VMs on a single host with DAS made from a RAID 10 made of 6x 15k SAS disks.

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• amanda backup problem

  - by hossam alkhalili

  hello, i installed amanda on centos 5.5 to backup windows 7 and windows server 2008 over network and i used 15 minutes instillation guide but when i type amcheck DailySet1 i got request failed then if i type amservice when i amandabackup account to define the problem i got Permission denied and on root account i got OPTIONS features=ff7fffff9cfeffffd3cf1300; i use zwc on windows 7 as an agent can anyone help me thanks -sh-3.2$ amcheck DailySet1 Amanda Tape Server Host Check Holding disk /dumps/amanda: 1791315968 KB disk space available, using 1791213568 KB slot 1: volume 'DailySet1-01' Will write to volume 'DailySet1-01' in slot 1. NOTE: skipping tape-writable test NOTE: conf info dir /etc/amanda/DailySet1/curinfo does not exist NOTE: it will be created on the next run. NOTE: index dir /etc/amanda/DailySet1/index does not exist NOTE: it will be created on the next run. Server check took 0.880 seconds Amanda Backup Client Hosts Check WARNING: jrcbs01.jrc.local: selfcheck request failed: Connection refused Client check: 1 host checked in 10.020 seconds. 1 problem found. amservice 192.168.1.1 bsdtcp noop [root@jrcbs01 ~]# amservice 192.168.1.5 bsdtcp noop

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• amanda backup problem

  - by hossam alkhalili

  hello, i installed amanda on centos 5.5 to backup windows 7 and windows server 2008 over network and i used 15 minutes instillation guide but when i type amcheck DailySet1 i got request failed then if i type amservice when i amandabackup account to define the problem i got Permission denied and on root account i got OPTIONS features=ff7fffff9cfeffffd3cf1300; i use zwc on windows 7 as an agent can anyone help me thanks -sh-3.2$ amcheck DailySet1 Amanda Tape Server Host Check Holding disk /dumps/amanda: 1791315968 KB disk space available, using 1791213568 KB slot 1: volume 'DailySet1-01' Will write to volume 'DailySet1-01' in slot 1. NOTE: skipping tape-writable test NOTE: conf info dir /etc/amanda/DailySet1/curinfo does not exist NOTE: it will be created on the next run. NOTE: index dir /etc/amanda/DailySet1/index does not exist NOTE: it will be created on the next run. Server check took 0.880 seconds Amanda Backup Client Hosts Check WARNING: jrcbs01.jrc.local: selfcheck request failed: Connection refused Client check: 1 host checked in 10.020 seconds. 1 problem found. amservice 192.168.1.1 bsdtcp noop [root@jrcbs01 ~]# amservice 192.168.1.5 bsdtcp noop

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• Outlook 2003: How to print embedded images in e-mails?

  - by Jon Seigel

  My boss has been trying to print his e-mails with embedded images, but the images don't print. All we get is a placeholder space where the image should be. Ideally, we'd like to have an option to control whether images get printed or not. I Googled this already and the one solution I found, trying to print the e-mail from the separate window using the print icon, did not work. Edit: also tried the solution here without success. I had him forward a sample e-mail to me, and I printed it fine in my Outlook (same version).

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• Can you use a USB hard drive in ESXI?

  - by semi

  I know that you can install ESXi 4.0 on a thumbdrive, but I was wondering if you could plug in an external harddrive to give extra storage to one of your VMs? We run a fileserver inside of ESXi that needs a space upgrade, but we're thinking of migrating to a different fileserver solution and would rather stick to external media to ease the later transition. edit: Ideally I'd like the drive to show up to the VM directly and not have ESXi control it, so that I could move it to a different machine and still have all of the data appear the same.

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• ifcfg-eth* on CentOS 6.x, but for IPv6 only?

  - by Ray Hoffman

  Could someone kindly provide a skeleton ifcfg-eth0:[X] for creating an alias with a IPv6 address and no IPv4 address? Or, alternatively, what's the IPv6 equivalent of this: in /etc/sysconfig/network-scripts/ifcfg-eth0:1 DEVICE=eth0:1 ONBOOT=yes BOOTPROTO=static IPADDR=42.69.66.66 NETMASK=255.255.255.0 Or does this not even make sense in IPv6 space? I know that I can use, for example: IPV6INIT=yes IPV6ADDR=2600:4200::6900:6666:dead:beef But then do I need to specify that there is no IPv4 address associated with this alias? If so, how? And do I need to also specify the IPV6_DEFAULTGW? Or can it piggyback on the eth0 (unaliased) gateway, which is specifed, like with IPv4 aliases? EDIT: Answered my own question! The easiest way to accomplish this seems to be not to create an alias as with IPV4, but to specify, for example, IPV6ADDR_SECONDARIES=2600:4200::6900:6666:dead:beef on the script for the base interface, e.g. ifcfg-eth0.

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• System backup with Norton Ghost

  - by Mehper C. Palavuzlar

  I will upgrade my system from Windows Vista Home Premium (x64) to Windows 7 (x64). Before starting the upgrade process, I want to back up my current system with Norton Ghost. I have never used it before, so I need assistance to do that. At the moment, there is 139 GB used space by Vista and I have 1 TB external HD connected via USB. If you can tell me the step by step instructions about how to back up and how to restore if the upgrade somehow fails, I'll appreciate that. Thanks.

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• Immutable hard links on ext3/4?

  - by shovas

  In my research on file versioning at the fs level, snapshotting, and related ideas, I took a look at hard-links and exactly what they are and how they behave. Using rsync you can get a pretty slick poor man's snapshotting system up and running on file systems that don't natively support it. But, can you get immutable hard links on ext3/4 or any other file systems for that matter? My definition for immutable hard link is: A hard link which, when changed on one location, becomes a regular copy and no longer a hard link. I would like this because it would enable snapshotting use of the source data to link against instead of a copy of the data (in the case of the rsync snapshotting technique). I have gigabytes of data that can't be duplicated due to space restrictions but I have enough room if I can intelligently snapshot individual changed files with the rest linked to the source not a copy. Given all that, is there some other technique, feature or technology I'm really looking for?

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• MySQL Federated Tables Escaped Table Names

  - by Gordon

  I am trying to use MySQL federated tables. The problem is that the documentation specified at http://dev.mysql.com/doc/refman/5.0/en/federated-use.html says that a federated table should be created using the following format for the CONNECTION parameter: scheme://user_name[:password]@host_name[:port_num]/db_name/tbl_name E.G. CONNECTION='mysql://username:password@hostname:port/database/tablename' CONNECTION='mysql://username@hostname/database/tablename' CONNECTION='mysql://username:password@hostname/database/tablename' The problem is that the table I am trying to connect to has non-standard characters in it and I cannot find the proper way to scape them in the connections tring. For example, a table named `Table (one)` . Which has the space and the parenthesis, requiring backticks surrounding it inside any SQL code. Anyone know the proper way to do this?

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• Windows Installer using usb drive for temp purposes

  - by Douglas Anderson

  When installing apps that are built around Windows Installer, it would appear that it often uses my external usb hard disk (when it's connected) as the temp location while it expands and installs the application (creates a folder off the root with a guid name). Is there anyway to change this so it always defaults to a specific drive? This appears to be the case on Windows Vista and 7, not sure about previous releases. EDIT: Current environment variables look like this: TEMP=C:\Users\<me>\AppData\Local\Temp TMP=C:\Users\<me>\AppData\Local\Temp EDIT: I have a funny suspicion that it's using the drive with the largest available free space.

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• Windows Vista/7: Managing multiple audio playback devices

  - by BrianLy

  I've got speakers (audio in) and headphones (USB headset with it's own soundcard) connected to my desktop computer. Under Windows 7, I can right-click the Audio Mixer and select Playback Devices and toggle between my these devices. Is there an easier way, perhaps a keyboard shortcut, that would make it easier to toggle? I'm working in an shared space were sometimes I want headphones to avoid annoying other people, but at other times speakers are OK. I want to be able to toggle quickly. In an ideal world, the solution to my question would work in Vista too.

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• Wireless AP Placement and Digramming

  - by Matt Simmons

  I'm trying to research the best placement of wireless APs in a given space, and I'm running into problems in gathering information. I found (what I thought was) a great source in this tech republic article: http://techrepublic.com.com/5206-6230-0.html?forumID=82&threadID=163120 While this diagram seems detailed and overall very informative, there were a lot of comments talking about how it was lacking in things like "wire racks, microwaves, concrete walls, motors..." etc. Maybe I'm rash, but I just sort of looked around my office (which is, albeit, somewhat smaller than the one diagrammed), and went "uhhh, there", and hooked up the AP. It seems to cover everywhere. I imagine if my office quadrupled in size, I'd logically divide it up and put four APs in, with a similar amount of thought devoted to each. So, suppose I had a much more complex office. What tools (both diagramming and surveying) do you use to plan your AP placement?

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• Wireless AP Placement and Digramming

  - by Matt Simmons

  I'm trying to research the best placement of wireless APs in a given space, and I'm running into problems in gathering information. I found (what I thought was) a great source in this tech republic article: http://techrepublic.com.com/5206-6230-0.html?forumID=82&threadID=163120 While this diagram seems detailed and overall very informative, there were a lot of comments talking about how it was lacking in things like "wire racks, microwaves, concrete walls, motors..." etc. Maybe I'm rash, but I just sort of looked around my office (which is, albeit, somewhat smaller than the one diagrammed), and went "uhhh, there", and hooked up the AP. It seems to cover everywhere. I imagine if my office quadrupled in size, I'd logically divide it up and put four APs in, with a similar amount of thought devoted to each. So, suppose I had a much more complex office. What tools (both diagramming and surveying) do you use to plan your AP placement?

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• Windows 7 side Taskbar: how to have multiple icon columns?

  - by user151426

  NOTE: I know this can be done with the taskbar on the bottom. I seek the solution for a taskbar on the side. I attached a picture of what I mean. In the screenshots, you can see that my taskbar program icons are arranged in a single column. I want to be able to have multiple columns. This would mean arranging the icons into squares and have them be placed side by side, as well as above and below one another. This can be accomplished with taskbar being on the bottom of the screen, however, I require this arrangement when I have my taskbar on the side of my screen. Currently if I expand the taskbar horizontally, it only stretches out the icons horizontally rather than turn them into small squares to make room for side by side and placement of icons. Additional icons that I add to my current taskbar are only accessible by using the horizontal scroll bar that appears at the bottom of the taskbar when there is no more space to accommodate any more icons.

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• Cannot resize OS X partition

  - by David Pearce

  I am trying to resize my existing Mac OS Extended partition on my Macbook to install Windows 7 (using steps similar to these), but when ever I go to apply the changes, I get this error: Partition failed Partition failed with the error: The partition cannot be resized. Try reducing the amount of change in the size of the partition. The total capacity of the hard drive in question is 260GB, with the entirety being taken up by the OS X boot partition. There is I am aiming to shrink that partition down to 60GB. How can I fix this problem? I have been reducing the amount of change by 10GB each attempt, but it still is not working. I assume the problem is that there is not a large amount of continuous space on the device. Is there some way to can do a manual defrag that would rectify this problem?

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