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• How to Delete File stderr1 on a SAP System?

  - by Techboy

  I have a file called stderr1 in the work directory of several of the SAP servers in my production cluster. It has grown to around 19GB's to fill the hard disk on each server. I have deleted all trace files and WP files from within transaction SM50 but that hasn't deleted it (or re-named it to .old). If I try to rename or delete it manually, it says I can't because the file is in use. Please can you tell me how I can delete or shrink the stderr1 file?

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• Copying windows 8 Users folder having long long paths

  - by bilal.haider

  I was trying to move my "Users" folder in Windows 8 as described here and here. But when I try to copy the folder using "xcopy" in Windows Installation Disk Repair Mode, after some files are copied, I get "insufficient memory". The files on which the error is given are like C:\Users\Bilal\Application Data\Application Data\Application Data.........Application Data\Application Data..... What is the point in such directories within directories? I also tried copying them using Mini Windows XP, but the problem was there too.. Also tried copying using Parted Magic Live CD... but still.. So now, how can I move them? Another Question. Is moving such/ system files using Linux a good idea? Does it do anything to permissions?

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• MacBook Refuses to Boot

  - by pas09

  I have a MacBook that has unfortunately died on me. I randomly got a pop up message that said I needed to restart my computer, and once I did, I was greeted with the blinking folder question mark start up screen. I've tried everything, including running Disk Utility repair and reformatting the hard drive and reinstalling OS X. All of my data is backed up and safe, I just need my computer to start again. Before I go off and buy a new hard drive, I wanted to see if there is anything I might have forgotten.

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• Tools to monitor guest OS performance in vSphere

  - by Quick Joe Smith

  I am looking for some tool or way to retrieve performance data from guest VMs running under vSphere 4.1. I am currently interested in the 4 basic metrics: CPU(%), Memory(%), Disk availability(%) & Network utilisation(Kb/s). The issue I have is that all of vSphere's performance data is from a ESXi host perspective (active, shared, consumed, overhead, swapped etc.) which is far removed from the data from the VM's own perspective. For instance, I have a Windows server VM idling, using around 410MB (~25% of its allocated 2GB) as reported by Task Manager, and this is the value I'm after. vSphere's metrics seem unable to arrive at this figure by any reliable and repeatable means. Is anyone aware of tools that can obtain this kind of data? The simpler, the better.

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• Calculating IOPS for a single HDD - what am I doing wrong?

  - by red888

  So I know there is no standardized way of calculating IOPS for a HDD, but from everything I have read it appears one of the most accurate formulas is the following: IOP/ms = + {rotational latency} + ({block size} / {data transfer rate}) Which is IOs per millisecond or what the book I've been reading calls "Disk Service Time". Also rotational latency is calculated as half of one rotation in milliseconds. This was taken from the EMC book "Information Storage and Management" -arguably a pretty reliable source right\wrong? Putting this formula into practice consider this Seagate data sheet. I am going to calculate IOPS for the ST3000DM001 model for a block size of 4kb: Seek Average (Write) = 9.5 -I'll measuring IOPS for writes Spindle speed = 7200rpm Average Data Rate = 156MB/s So my variables are: Seek Time = 9.5ms Rotational latency = (.5 / (7200rpm / 60)) = 0.004s = 4ms Data Rate = 156MB/s = (0.156MB/ms / 0.004MB) = 39 9.5ms + 4ms + 39 = IO/ms 52.5 1 / (52.5 * 0.001) = 19 IOPS 19 IOPS for this drive clearly is not right so what am I doing wrong?

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• Reliable Backup Solution for Linux for Complete System Restoration

  - by Chris S

  What's the best backup solution for Linux that can completely restore the entire filesystem to a blank harddrive (including partitioning) after an old harddrive dies? I'm currently running a few Ubuntu machines, some with RAID-1 and others without RAID (mostly laptops). I'd like to implement a backup solution that can take incremental snapshots of the entire filesystem, so that if I were to replace all the harddrives in a machine, I could use the backup to restore a perfect copy of the previous filesystem. Unfortunately, nearly all the backup solutions I've found seem to be glorified rsync scripts, which only backup some files, and have no easy way to restore once the entire filesystem is gone. Some of the more complicated solutions, like Bacula, might do what I need, but require a complicated server/client setup and are notoriously difficult to maintain. I've heard that Apple's TimeMachine utility has this ability, and I've had similar success taking differential disk images with Acronis True Image on Windows, but of course neither of these work on Linux. Is there anything comparable for Ubuntu?

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• Western Digital Mybook is creating folders I didn't create

  - by Rogue

  I have a WD MyBook which has been creating empty folders with a long string of numbers and alphabets and some shorter ones with just some numbers with a 0kb file in it Some of these can be deleted but some just stay put. It's irritating to find new ones everyday and now i have a collection of them which don't delete is there any way to delete these ? Edit: I have scanned the drive using Antivirus and AntiMalware Software so i don't think it would have a virus One solution is copying all the matter elsewhere and formatting the hard disk but there is not guarantee that these folders wont reappear.

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• Root partition full? CentOS

  - by Joao Heleno

  Hi! I'm running CentOS 5.4 and my / is full. I wanted to install gparted but in order to do that I must install Priorities and it's when I get an error saying / is full so I can't go forward. Here's some output: fdisk -l Disk /dev/sda: 250.0 GB, 250000000000 bytes 255 heads, 63 sectors/track, 30394 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 2611 20972826 83 Linux /dev/sda2 2612 3251 5140800 82 Linux swap / Solaris /dev/sda3 3252 30394 218026147+ 83 Linux df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 20315812 19365152 0 100% / /dev/sda3 211196248 49228164 151066780 25% /home tmpfs 1552844 0 1552844 0% /dev/shm I'm not using LVM. Please advise. Thanks

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• How to netboot ubuntu running iniside VirtualBox on Mac Air

  - by murungu

  Having configured a virtual machine for Ubuntu on VirtualBox on my mac air I need to install Ubuntu OS itself. I have selected the hardrive as the primary boot device and the network as the secondary boot device, so I am not prompted to install an Ubuntu disk at boot time. It attempts to netboot but is unable to locate Ubuntu and cannot find anywhere in the configuration where I can explicitly specify where to find and Ubuntu image, so assume it reverts to some default location and fails. Has anybody out there ever successfully installed ubuntu on virtual box on their Mac Air? What steos did you take to get it right?

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• Home Server restore fails cannot find boot device

  - by Tim Heuer

  I am using Windows Home Server to backup my PCs. I recently had a hard drive failure on one of my WHS connected PCs and obtained an identical sized/speed drive for my laptop. I used the latest home server restore CD and did the restore. It said it completed successfully. Upon reboot, it says 'cannot find boot device' and lists all my drives (hard drive, cd, network book) indicating no valid operating system was found. I boot using the Win7 repair disk and while it doesn't see the operating system, it sees the drive and if I go into a command prompt, I can see all my data on the drive. My laptop is Windows 7 64-bit Ultimate. I've tried most everything I can think of. I'm a technical user (software developer) so I'm pretty aware of how things work (or should). I don't feel like I'm missing a simple step here.

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• Dropped Dell XPS has hard-drive trouble

  - by Alex B.

  Yesterday, my mom dropped her laptop to the floor and got the blue screen of death after trying to boot the system. I was able to start a Fedora live CD and get some of her stuff off the hard drive, but I cannot seem to be able to install Windows on it. The installation starts loading files and then the computer turns off. I am thinking that she might need a new hard drive. Any ideas? Edit: I actually was able to boot the Windows XP installation but it is saying that no hard disk is detected. How can this be possible if I was able to mount the drive on fedora yesterday?

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• SCSI vs SATA? Is SCSI "actually" better?

  - by earlz

  Well, I was talking with a guy about servers the other day. I was a bit shocked whenever I asked him if there was any significant difference between SCSI and SATA and why he always uses SCSI. (note, I'm not sure if by SCSI he meant SAS) He told me that SCSI is always faster and that the drives are always more reliable.. I mean, this seems like a bold statement. He told me something about how SCSI will always be faster than SATA because the OS sends the SCSI (controller?) a request to get a file and it will build the file inside of the SCSI controller, instead of searching all over the disk.. which I do not understand how that would work, so I figure it is BS. SAS and SATA currently have equivalent data rate speeds.. Is there any true backing for his reasoning that SCSI is always faster and more reliable than SATA?

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• Where exactly does a portable app is running when the usb stick is pulled out without closing that app?

  - by Selin Peck

  Where exactly does a portable app is running when the usb stick is pulled out without closing that app? Is it in memory? Is it written the on hard disk as temporary files (where exactly is it, appdata or where)? Does that mean the next user of the pc could gain access just clicking that from the system tray and saving to other folders? How about when the system crash and that portable app is not closed the normal way? On the next open, will it stay somewhere on temporary folders?

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• How to present shared storage for MS Cluster Services running on vSphere 5

  - by MDMarra

  I've seen two approaches to handling the presentation of shared storage to Windows Server 2008 R2 cluster VMs on VMWare vSphere. One is the traditional method of carving out a LUN on your SAN and presenting it to both hosts through the Microsoft ISCSI software initiator. The other method is to make a vmdk on an existing LUN and attach it to both hosts and made it an independent disk so that it isn't affected by snapshots. Is one way the "correct" way, or are both viable? Is there any advantage or disadvantage to doing either?

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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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• 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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• Windows 7, files reappear after deletion.

  - by HeavyWave

  I'm trying to delete some files from a folder. I've taken ownership of the files and the folder. When I delete these files Windows doesn't report any errors and deletes them. BUT, after I press F5 these files reappear again. There are no messages whatsoever, they are just undeletable. I know login off will help, but how do I fix it without going through the pain of closing everything down? P.S. Files disappear from the folder after aprox. 5 minutes. Update. Turns out my version of Windows did not properly upgrade from test version, so it had some weird disk drive issues.

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• Thoughts on Apache log file sizes?

  - by Nathan Long

  Do you place any limits on the size of Apache log files - access.log and error.log? Specifically, can you give: Reasons to limit log file sizes Disk space Any other? Reasons NOT to limit log file sizes Research into performance issues or security breaches Any other? Methods of doing so Cron job that periodically deletes the file, or the first N lines? Any other? Anything you might salvage before deleting For example, grep out how many times a file was downloaded before deleting the access logs I'd like get the thoughts of experienced sysadmins before I do anything. (Marking as community wiki since this may be a matter of opinion.)

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• Viewing and deleting partitions using the BIOS?

  - by cluelesscoder

  I have an M4A785TD-M EVO Asus motherboard which uses Asus Express Gate for its motherboard (says American Megatrends, Inc at the bottom). I activate it by pressing Del; also says Tab activates BIOS Post but that doesn't seem to do anything. I went into this expecting to see a breakdown of the partitions. I have a 300GB hard-drive separated into 3 partitions. While it does show SATA for my main hard-drive and my disk drive, it doesn't show the partitions. Is this typical? Do I have to us an OS-based tool to delete the partitions or can I delete using my BIOS? I tried updating the BIOS through Asus's Update utility but it appears to be broken (connects/disconnects repeatedly). I used HWiNFO32 to get some information: BIOS Date: 06/30/10 BIOS Version: 2103 EFI BIOS: Not Capable Tried to update but it directs me to biosagentsplus.com which wants $30 for the download (another question would be how to avoid them).

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• Removing vg and lv after physical drive has been removed

  - by Rene

  We had a disk fail and replace but forgot to vgreduce first. The drive was on it's own VG and with two empty LV's and these are now causing LVM to complain every time any command is run, i.e. # lvscan /dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error /dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error /dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error /dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error /dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error /dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error /dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error /dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error The two LV's are not important, I just want to stop this error from displaying.

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• Can you run Android 2.2 Froyo or 2.3 Gingerbread in a VM?

  - by Josh B

  I came across a how-to guide for running Android 1.7 in a virtual machine (VirtualBox), but 1.7 is old. I haven't been able to find a Android 2.2 or 2.3 image anywhere, does anyone have any ideas on how to virtualize newer Android OS's? Preferably a free virtualization solution like VirtualBox. Here is the link about virtualizing 1.7: http://osxdaily.com/2010/12/14/run-android-using-a-virtual-machine-on-a-mac-or-windows-pc/ They send you to here to download Android disk images: http://virtualboxes.org/images/android-x86/ But I can't find anything newer than 1.7, anyone have any ideas? Is this considered illegal or piracy is that why there are no images available? Thanks for help!

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• Allow READ access to local folders in 2003SBS AD

  - by Dan M.

  Have a SBS2003 client with a mess of a domain that is in process of being cleaned. But, for the life of me I cannot find a setting that will allow write access to the local hard disk for domain users with redirected profiles(to the server). This is needed only for one program that will not follow a symbolic link to the network path, instead it seems to be hard coded to the %appdata% folder but only on the c: drive.... So question is how can I allow "Domain users" write access to the local %appdata% directory? I have tried setting it manually on a machine but it kept resetting to RO no matter how many times I tried. Everytime I would uncheck the RO property it would reset sometime right after i hit OK. Thanks in advance! Dan

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• data recovery from unallocated harddisk partition

  - by user36007

  Hi, I accidentally deleted a partition which mainly served as space I put my data, labeled D: drive. The partition wasn't subsequently formatted though, following the delete incident. Obviously the D: drive doesn't show up as it usually does when I run Windows 7. In the "Computer Management", on clicking the Disk Management I clearly see the space is now labled as unallocated. question: How do I go about recovering my data. Perhaps what the effective data recovery software I can use to resolve this issue. Thanks

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• data recovery from unallocated harddisk partition

  - by user42151

  Hi I accidentally deleted a partition which mainly served as space I put my data, labeled D: drive. The partition wasn't subsequently formatted though, following the delete incident. Obviously the D: drive doesn't show up as it usually does when I run Windows 7. In the "Computer Management", on clicking the Disk Management I clearly see the space is now labled as unallocated. question: How do I go about recovering my data. Perhaps what the effective data recovery software I can use to resolve this issue. Thanks

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• data recovery from unallocated harddisk partition

  - by user36007

  Hi, I accidentally deleted a partition which mainly served as space I put my data, labeled D: drive. The partition wasn't subsequently formatted though, following the delete incident. Obviously the D: drive doesn't show up as it usually does when I run Windows 7. In the "Computer Management", on clicking the Disk Management I clearly see the space is now labled as unallocated. question: How do I go about recovering my data. Perhaps what the effective data recovery software I can use to resolve this issue. Thanks

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