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• Windows 2012 Cluster on P6300 SCSI-3 Persistent Reservation issues

  - by Bruno J. Melo

  Scenario: 1 HP 6300 with latest XCS version 1 Command View 10.1 + with hosts defined as Windows 2008 2 BL460c Gen8 Servers with SPP 2012.10 and Windows Server 2012 Datacenter Edition with all the updates + MPIO feature enabled DSM v4.03.00 Cluster Analyser Tool triggers this error: Test Disk 0 does not support SCSI-3 Persistent Reservations commands needed to support clustered Storage Pools. Some storage devices require specific firmware versions or settings to function properly with failover clusters. Please contact your storage administrator or storage vendor to check the configuration of the storage to allow it to function properly with failover clusters. Any ideas? Thanks for your help!

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• Very slow Windows 7 on Thinkpad T61

  - by bogdanf

  I have a very strange problem with my fresh install of Windows 7 Profesional, 64bits on my Lenovo Thinkpad T61 : The overal performance is very slow, the disk is constantly spinning, even without any program running (after boot, no other programs installed). The boot process is very slow itself (4-5 minutes). I mention that the laptop was fine on XP until the upgrade. Thanks ! Additional info (as requested by the comments) : 2GB RAM Yes, I added all the manufacturer (Lenovo) drivers and updates (using the utility provided by Lenovo) Tried with both 32 and 64 bits editions. The 32 bits one is performing a little better, but not very usable either. The hdd has enough space (20 GB or so) The problem is still present on a fresh install, so no recycle bin emptying or unistall programs (there aren't any except plain 7) would help. I'm not a newbie, so no obvious causes are left unchecked

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• How to efficiently dump a huge MySQL innodb database?

  - by Jagbir

  I got an Ubuntu 10.04 production MySQL database server where total size of database is 260 GB while size of root partition is itself 300 GB where DB is stored, essentially means around 96% of / is full and there's no space left for storing dump/backup etc. No other disk is attached to server as of now. My task is to migrate this database to other server sitting in different datacenter. Question is how to do that efficiently with minimum downtime? I'm thinking in line of: Request to attach an extra drive to server and take a dump in that drive. Transfer dump to new server, restore it and make new server slave of existing one to keep data in sync When migration is needed, break replication, update slave config to accept read/write requests and make old server read-only so it won't entertain any write requests and tell app developers to update there config with new IP address for db. What's your suggestions to improve this or any alternate better approach for this task?

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• Folder cannot be deleted

  - by Aaron

  I am using Windows XP Home Edition. When I try to delete a folder I have named cygwin. When I try to delete it or any file or folder within it, there is a long pause, and then an error pops up, saying: Cannot delete Cygwin: Access is denied. Make sure the disk is not full or read-write protected and that the file is not currently in use. I have tried deleting the folder and the files it contains with FileAssassin, and unlocking it with LockHunter. Neither report any errors unless I try to have them delete the file or folder, then I get an error message saying Access Denied. I have rebooted into Safe Mode to change the ownership, but I get Access Denied when I click OK or Apply. How can I delete this folder?

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• How To Cancel Pending Windows 7 Updates

  - by Itai

  How To Cancel Pending Windows 7 Updates? The key is pending. The shutdown button has the windows update symbol meaning that there are updates that were selected to be installed which were download and will be installed upon shutdown. The only thing is that my machine will no longer boot if I let it install those updates! They are incompatible with a driver needed in the system and I did not found out until too late. The system admin used a recovery disk to get back to the previous restore point, only the updates are now pending, so I need to cancel those before the machine shutdowns next.

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• Deleting a partition on dual boot

  - by blade4

  I have split my C:\ physical disk into 3 seperate partitions: C, H, and K. C has my original OS and is the active partition, H has another OS (dual boot), and K has song files. I want to keep the other OS (Windows Server) and when I am in this OS, I can't delete C ("Windows cannot format this partition"). What is the best way for me to get rid of C, keep all the songs intact, and the Server OS partition, so I replace C with another OS, and then get rid of the original Windows Server OS (So revert the dual boot to a single boot).

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• Installing php(suexec) for Apache

  - by John

  I've got Apache installed and running but how do i install and run PHP as fastcgi so it runs as its own user? here is my apache config: ./configure --prefix=/usr/local/apache2 --enable-rewrite=shared --enable-so --enable-suexec --disable-asis --disable-autoindex --enable-cache --enable-deflate --enable-disk-cache --enable-expires --enable-file-cache --enable-mem-cache --enable-ssl --enable-vhost-alias --with-mpm=prefork --with-port=8080 here is my php config: ./configure prefix=/usr/local/php --without-pear --enable-safe-mode --enable-magic-quotes --with-apxs2=/usr/local/apache2/bin/apxs --disable-cli --disable-cgi --enable-force-cgi-redirect --enable-fastcgi --with-mysql --with-gd --with-jpeg-dir=/usr/lib --with-png-dir=/usr/lib --with-freetype-dir=/usr/lib --enable-calendar --with-curl --enable-mbstring --with-mcrypt

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• How do I make the Windows low memory warning less sensitive?

  - by Stephen

  I keep getting this annoying low memory warning/prompt to close games I play. It happens very often and I still have ~6 gigs of ram free. I disabled virtual memory because it was putting stuff on the pagefile when I had 10 gigs free ram so that spiked my disk usage. Is there any way to disable this warning? I have 16GB ram so it shouldn't be an issue. I would prefer to keep pagefiles off because my HD is very loud so it's nice to keep it spun down as much as possible. I don't want to disable it completely. Ideally, I would like it to go off when I have ~2GB left rather than 6, but if this isn't viable, I may just disable it completely.

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• Shrinking physical volumes in LVM on a Linux Guest in ESXi 5.0

  - by Stew

  The problem: Linux guest (OpenSuse 12.1), with multiple virtual disks attached. 3 disks are in a logical volume, two of which are exactly 2TB. None of the disks are independent, and due to the backup software we use, cannot be independent. When the two 2TB virtual disks are "dependent", the snapshot fails stating that the file is too large for the datastore. When I put those two disks in independent mode, snapshots work fine (the other disk is 1.8TB). I have therefore concluded that even shrinking the two physical disks by 100GB should solve the problem, however I am having trouble conceptualizing how to go about getting those disks smaller without breaking the LVM entirely. The actual LV has 1.3TB free, so there is plenty of space to shrink with. What I need to accomplish: Deallocate 100GB from the two, 2TB virtual disks within the linux guest. Shrink the two virtual disks by 100GB within vsphere (not as complicated). Are there any vsphere/LVM gurus that can give me a clue?

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• Lost Page Write I/O Errors on CentOS LVM setup

  - by Gregg Leventhal

  I have a CentOS 6 box with LVM setup and one of the PVs is a USB disk (I know). One of them is getting the error: Oct 30 10:57:07 alpha01 kernel: lost page write due to I/O error on dm-3 Oct 30 10:57:07 alpha01 kernel: Buffer I/O error on device dm-3, logical block 4 Which is causing problems with all of the LVs on it. pvs shows the PV as unknown device. I can ls to the logical volumes and they show up in lvdisplay, but first I get a bunch of IO errors. I made sure the cables are secure between the USB drive. What should I do to get this back up and running for the meanwhile? Should I unmount each LV and run an fsck.ext4 on each one like fsck.ext4 -y /dev/vg1/lv_logvolname ?

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• server performance metrics report and practicality

  - by Anjesh

  I have a need of preparing web server (apache-php) performance report containing important metrics like CPU usage, disk io, memory usage on user basis. Couple of domains are hosted in the same server and they run from separate users using fcgi. The reason being sometimes some hosted applications take lots of cpu usage, making the server slow for other applications (running as separate users). i am planning to develop scripts for this, as i can't seem to find any simple utilities for this purpose. This script will take snapshots of the user wise metrics at defined periods say 15 minutes and record it. Any abnormalities will be reported via emails. How practical is that? also would be interesting to know what else need to be recorded.

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• FreeNAS/ZFS/Raid-Z slightly different disks

  - by muskratt

  I'm considering using FreeNAS and "recycling" some of my older 1TB disks. Two are the exact same model Western Digital while another is Seagate and the fourth is Samsung. Typically, since all disks are not equal, I'll create my arrays on a Windows-based server 1GB undersized to prevent a replacement disk not being large enough. Dell is notorious for sending replacement SATA disks of different brand---knock on wood, no problems yet. Since not all drives are created equally and they can vary a few MBs, is there a way to make the the FreeNas/ZFS/Raid-Z function in the same way I do for my Windows-based servers above? Thanks

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• Home Server Restore

  - by Bryan Avery

  I have had to reinstall Home Server on my server and I would now like to restore it back to the state it was the last moment it stopped. I have the hard drive in a state it was last in, which is a small 250 gb hard disk. I have now installed 1.5tb hard disks, and installed a full licenced copy, as the original copy was a trial version. So I'm in a state where I have a new install, I have one of the old drives plugged in, but I can't transfer the old backups across, how do I do this?

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• Home Server Restore

  - by Bryan Avery

  I have had to reinstall Home Server on my server and I would now like to restore it back to the state it was the last moment it stopped. I have the hard drive in a state it was last in, which is a small 250 gb hard disk. I have now installed 1.5tb hard disks, and installed a full licenced copy, as the original copy was a trial version. So I'm in a state where I have a new install, I have one of the old drives plugged in, but I can't transfer the old backups across, how do I do this?

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• How to setup VM in KVM? Qcow or LVM etc.

  - by JohnAdams

  Finally, after quite a bit of this vs that, I have chosen to virtualize a couple of my servers with KVM. I did do a test setup as well, but I have a few questions about setting VM's in KVM. Would appreciate pointers. What is the best storage to use - Qcow2 or LVM? I like the fact that I can copy the VM file easily with a Qcow2 but what about LVM, how do I take a backup or make copy on a development server to play with? I know I can clone a LVM, but how do I bring to my development server? How do I setup the guest partitioning? For example, when setting up Ubuntu inside Ubuntu, do I choose LVM for that VM or regular fdisk partitioning? Can I increase the partition size then later, if I need a bigger disk?

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• How to boot window from recovery partition?

  - by Zack

  Acer service center created recovery discs for my acer laptop. And they also created a partition in which contains the data from recovery discs. I can see that partition from disk management only. But how do I boot from it? Some months ago I have linux os installed. So when the laptop boot up I can see that partition. But not Now. How to boot from it? I can't see that drive when i press F12. F2 = enter BIOS setup F8 = Boot in safe mode F12 = choose the boot drive

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• Cannot resize an ntfs (Windows Server 2k3r2) boot partition booting from gparted

  - by jshin47

  I am trying to use gparted to make my ntfs system/boot partition larger. I expanded the disk in ESX, providing an extra 60 GB or so of free space. I confirmed that this free space is available in gparted: However, when I try to go to "Move/Resize" the boot partition, there is no unallocated space for me to allocate. It will let me resize the "extended" (non-boot) partition, which makes me think the issue is that the partitions are not contiguous. If it's not obvious, I am no expert in partitioning/storage so any help is appreciated.

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• Creating ISO image of NTFS partition in Ubuntu

  - by Pappai

  Hi, I have a system that has to be formatted often because of the specific use of it (Use it in internet cafe). I have to install the drivers and apps each time. That is a time consuming and cumbersom task for me. I want to install windows, drivers, apps etc. once and create a backup of the entire C:\ drive, and keep it in a linux partition so that I can restore the OS with all the apps & drivers ready to go! I have ubuntu live CD with me and I have created a linux partition (ext4) in the HDD. My question is: How can I create an ISO image of the C:\ drive (ntfs disk) in Ubuntu and store it in the linux partition?

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• Network Block Device (NBD) clients for Windows or similar solutions

  - by przemoc

  Are there any NBD clients for Windows? Strangely, I cannot find any, or I am searching for them in a wrong way. Such client should be possibly a driver with front-end tool (may be a command-line one) allowing to create virtual drives and associate them with given hosts (or simply localhost) and ports where NBD servers are listening. From user perspective virtual drive should be close to what physical drive is, so it should be accessible as something like \\.\PhysicalDriveX (maybe \\.\VirtualDriveX?), be visible in Disk Management (diskmgmt.msc) and mountvol tools at least. (The only thing I found remotely close to NBD on Windows is ImDisk's proxy mode and companion tool devio, but AFAIK ImDisk only works at partition level (so no virtual drive) and devio uses different protocol.) Secondary question is: Are there any (preferably simple) Windows-specific solutions allowing creation of virtual drive delegating read/write request to user-space via some explicit way (like via TCP, IPC, DLL implementing given API, etc.)?

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• Restoring Mac-bootcamp-windows-partition image to Windows machine

  - by jpwagner

  Hi, I'm running Windows XP sp3 on my mac using bootcamp. Objective: I'd like to move this partition to a windows machine. This is what I tried: 1. create image using winclone 2. restore drive to disk partition on windows machine using paragon 3. reboot from new partition Results: it attempts to boot in XP (windows flag and progress bar load screen) but then gives me the old BSOD. safe mode just hangs while loading. (I then uninstalled KB977165 on a hunch, but that did nothing to help the issue.) Any ideas, advice, etc would be greatly appreciated. Thanks!

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• How can I decrease the time spent reformatting / restoring user's workstations?

  - by CT

  I just working for a medium sized company (approx. 150 users). When user's workstations need to be reformatted for any variety of reasons, we reformat, reinstall windows from an oem disk, install drivers, install shop desired software, and restore user's documents from latest backup. While the process isn't very difficult it is very time consuming. What are some options simplify / speed up this process? Mostly a complete Windows shop with most servers running Win2k3 Enterprise and workstations running a variety of XP, Vista, and 7. Workstations are purchased through a variety of OEMs mostly Dell.

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• CD-R suddenly unreadable?

  - by TheD

  I have a CD-R which has worked fine for a good while. All of a sudden, Windows can no longer read its data. It's not scratched, it's clean and Windows can detect the disk and usage of space on it. But whenever I attempt to access the data stored: Explorer crashes Or after 5-10 mins of trying to read it, it opens up and just shows a desktop.ini file in Explorer. This happens on multiple machines. Any ideas? Is there a way to recover the data? For example - some sector by sector recovery software if any exist for CD's?

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• Dummy SMTP server as a service

  - by levidos

  Hello, I have a Windows Server 2008 machine with IIS installed which is hosting a webapp that is sending some notification mails once-in-a-while. What I'd like to do is to monitor the email sent by the application. For this I need a dummy SMTP server which intercepts messages but won't send them further but save them locally on the hard disk.I've already found some of them like Papercut, SMTP4Dev. The problem with these that I have to be logged on the server all the time which is not suitable because the server has only 2+1 TS connections. I like to run a program like these as a windows service and check the mails when I need them. Any suggestion is much appreciated. Best Regards,Levente Rog

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• Is paravirtualization evil?

  - by Daniel

  I have an VMWare ESX Server v3.5 with a few virtualized Debian Lenny VMs (kernel 2.6.22 with vmi) running Apache Tomcat 5.5. I enabled paravirtualization, and Disk IO increased from about 240MB/s to 380MB/s, making me a happy admin. The problem now is that my apache tomcat becomes deadlocked during startup, running with 200% CPU (I have 2 CPUS assigned to the VM), and don't know how to get both: A stable system and a fast system. I somewhere heared that paravirtualization is legacy anyway and won't be available on newer ESX servers. Is there a replacement for this seemingly performance-improving option, or is it discontinued becauses it is just unstable? What is the state of paravirtualization? Should I ignore it completely? Thanks for all answers in advance.

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• Why does my USB stick not show up in Windows Vista?

  - by Kjensen

  Just reinstalled a Lenovo laptop with Vista. Two separate USB sticks, that work fine on another computer, will not show up on this Vista computer. USB ports work fine for other stuff. USB sticks worked before I reinstalled the computer. After looking around, I tried going into Disk management, to see if they appear there - they don't. Is there some sort of service, that might be disabled, not allowing removable drives to mount? Or what else can be wrong?

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