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• VMWare ESXi 5 - Expanded RAID 5 array - cannot access datastore

  - by Dayton Brown

  I'm using VMWare ESXi 5 and had a 2 TB RAID 5 setup on an HP DL360 with a P400i RAID card. I added two more 1 TB drives and using the SmartStart ACU, added the drives and expanded the logical disk. Now after booting back to ESXi, the server boots, but lists no available persistent storage. I've rescanned multiple times to no avail: the Datastore doesn't show up. I booted to GParted and the 1.8TB partition shows up, but it shows as unknown. Anyone have any good ideas? EDIT: Final Solution So after much gnashing of teeth, it was fairly simple to solve. I purchased an eSata 2 TB external drive and a PCI eSata card for my server. I then used Clonezilla to image the current partitions to my new external drive. You have to check "don't check drive sizes" in advanced mode, otherwise it will yell at you for have a smaller drive. For some reason my PCI card wouldn't boot on my HP server, so I hooked the drive up to another desktop I had, booted to VMWare, and copied the vmdk's to another drive. I'm going to blow out the RAID config and then create 1.5TB logical drives.

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• Upgraded users to Win7. Now getting "path not found" when saving files or opening attachments

  - by Matt Penner

  We have a Server 2008 AD environment with about 5k users. We just rolled out Windows 7 SP1 (were XP) with great success. However, about once a day we get a few calls that a user opens a file from their Documents (the folder is on the server and redirected), edits it and attempts to save but Win7 reports that the path is not found either because it doesn't exist or no permissions. The only way to fix it is to delete the profile. In addition we get about the same number but different users saying that they cannot open attachments from Outlook 2010 due to no permission. We have to edit the temp Outlook storage path in the registry to fix it (or delete the profile). I think the two issues may be related. What scares us is that we rolled out 1 month ago and had no calls of this nature until about 2 weeks ago. It started off as one or two but seems to be growing. Any ideas? We're going to open a Microsoft ticket but I wanted to seenif anyone else has run into this. Thanks!

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

  - by Tommy

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

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• Known USB 2.0 devices don't install driver, but must be manually forced

  - by Darragh

  When a known USB 2.0 device is plugged in and detected, it doesn't install the driver correctly but shows a Code 28 error and lists the device under "Other Devices" in Device Manager. When view properties of this device , it shows the following status; The drivers for this device are not installed. (Code 28) There is no driver selected for the device information set or element. To find a driver for this device, click Update Driver. When updating the driver manually and selecting the appropriate driver Windows doesn't believes it's the correct driver, but you can force the installation and it works! The other condition the driver will auto-install is when the same USB device is plugged into a USB 3.0 port. Power related issues are not also causing this as I have tried vi a Docking station, USB hub. etc.. Devices tried; Jabra Headset USB-Mass Storage Device (flash disk and ext HD) MS Wireless Keyboard & Mouse USB Ethernet controller (USB-MAC controller) This is on a laptop part of a Domain with Windows 7 Ent 7601, I am logged in as a local administrator. There isn't any Group Policies blocking not signed driver or whitelisted devices on the domain. Any suggestions please feel free

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• Replace Linux Boot-Drive | ext3 to btrfs

  - by bardiir

  I've got a headless server running Debian Linux currently. Linux vault 3.2.0-3-686-pae #1 SMP Mon Jul 23 03:50:34 UTC 2012 i686 GNU/Linux The root filesystem is located on an ext3 partition on the main harddrive. My data is located on multiple harddrives that are bundled to a storage pool running with btrfs. UUID=072a7fce-bfea-46fa-923f-4fb0827ae428 / ext3 errors=remount-ro 0 1 UUID=b50965f1-a2e1-443f-876f-578b5f93cbf1 none swap sw 0 0 UUID=881e3ad9-31c4-4296-ae60-eae6c98ea45f none swap sw 0 0 UUID=30d8ae34-e2f0-44b4-bbcc-22d761a128f6 /data btrfs defaults,compress,autodefrag 0 0 What I'd like to do is to place / into the btrfs pool too. The ideal solution would provide the flexibility to boot from any disk in the system alike, so if the main drive fails I'd just need to swap another one into the main slot and it would be bootable like the main one. My main problem is, everything I do needs to result in a bootable system that is open to ssh logins via network as this server is 100% headless so there is no possibility to boot it from a live cd or anything like that. So I'd like to be extra sure everything works out fine :) How would I best go about this? Can anybody hint me to guides or whip something up for these tasks? Anything I forgot to think about? Copy root-data into btrfs pool, adjust mountpoints,... Adjust GRUB to boot from btrfs pool UUID or the local device where GRUB is installed Sync GRUB to all harddrives so every drive is equally bootable (is this even possible without destroying the btrfs partitions on the drives or would I need to disconnect the drives, install grub on them and then connect them back with a slightly smaller partition?)

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• Retrieve a user's Exchange database in powershell

  - by Paul

  Hey Everyone, I've scoured the interwebs for a few days now off and on to find this. I am creating a powershell script for email-enabling new user's(Exchange 2007). To give you a little background when we have a new hire, their AD account is created at our off-site helpdesk, but they don't create their email account. I'm trying to automate the process of mail-enabling the user which involves putting them in the same database as an existing user, disable imap pop activesync, and lastly email the requester of the ticket. I would like to just get prompted for the New User's name, User to Replicate(mailbox, storage group, database), and the person to email after it's been created. So if someone could just help with a command to Retrieve a user's Exchange database in powershell that would be great, but if people also want to help with my hacked up script please do so as well!!! Here is what I have so far: Write-output “ENTER THE FOLLOWING DETAILS” $DName = Read-Host “User Diplay Name" $RUser = Read-Host "Replicate User(Database Grab)" ***$RData = #get the Replicate user's mailbox database here*** $REmail = #either just use a Read-Host “Requester's Email address" or ask for Requester's name and pipe through their email address by digging for it w/ powershell Enable-Mailbox -Identity "$DName" -Database "$RData" Send-MailMessage -From "John Doe <[email protected]>" -To (put $REmail here which is the Requester's email) -Subject "Test Person's email account" -Body "Test Person's email account has been setup.`n`n`nJohn Doe`nGeneric Company`nSystems Administrator`nOffice: 123.456.7890`[email protected]" -SmtpServer genericexchange.exchange.com

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• UW-IMAP server, high load for one user

  - by Bruce Garlock

  We have been experiencing a very strange anomaly, with one specific user with our UW-IMAP server. We have about 75 users using the server, and one particular user, who is in about the middle as far as used storage keeps having issues with slow speed. Most of our users all use Thunderbird 2, or Thunderbird 3. Mostly 2, because of the performance issues we have had with 3. This user was on 3, and I downgraded him to 2. The performance has gotten better, but according to the imapd processes on the server, his username is using the most CPU % and CPU time. I've already done all the usual T/S'ing: Started profile from scratch, compacted folders, re-indexed, newer faster computer, etc.. Still, this users' imapd process is always using the most CPU on the server. For troubleshooting, we setup another user which has more usage, folders, etc.. than he does, but we don't see the users process taking up most of the CPU with the imapd process. So, it almost sounds like a particular email may be the culprit, but how can we find it, if thats the problem? This has been going on for a while, and he is a management person, so his patience is about to end. Does anyone have any ideas?

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• What's throttling the database?

  - by Troels Arvin

  Hardware: Intel x86_64 with 192GB of RAM. OS: CentOS 5.4 x86_64. DBMS: DB2 v. 9.7.1 64 bit. During certain special workloads (e.g. parallel REORGs/RUNSTATs), I've seen the server transporting 450MB/s with 25000IO/s (yes, there is probably some storage system caching happening here) while all CPU cores were happily working in an even mix of usermode/wait. And disk benchmark tools can also bring some very satisfying bandwith and IO/s numbers to the table. On the other hand, we also have another scenario: A single rather complex query with at least one large table scan. db2's "list applications" reports that the query is Executing (not locked). IO: At most 10MB/s, 500 IO/s; CPU: two cores in 99.9% wait state, all other cores 100% idle. The tables which the query reads from have been altered to have LOCKSIZE=TABLE, so I would think that lock list work is zero. What's going on in such a situation? What tools/snapshots/... can I use to gain better insight in such a case?

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• Can't mount Linux usb disk. It just create /dev/sg device but no /dev/sd

  - by MTilsted

  I have a Corsair R60 ssd disk which is a disk with both sata and usb connectors. But the usb thing seems to be a bit non-standard, or maybe its just my fedora linux. When I insert the disk using a usb cabel to a running Fedora 14 linux system, a device called /dev/sg3 is added but that is all. No new /dev/sd* device is created so I can't mount the disk. If I look at cat /proc/scsi/sg/device_strs I get ATA Hitachi HTS54321 FB2O HL-DT-ST DVDRAM GSA-T50N RP05 Seagate Desktop 0130 Corsair CSSD-R60GB2 So the disk is there. (The last entry) but my linux will for some reason not see it as a usb hard disk. When I insert other usb disks they work fine. It is only this specific disk which causes problems. I have tried on 3 different computers with the same result. A hint to the problem may be that if I add the disk to a windows system(With usb) the disk is called "A fixed disk" and not a portable disk as expected. The disk works fine with linux If i connect it with the sata cabel, but I would really like to have it working with usb too. (To mount it on computers without sata). Added: I did try to mount /dev/sg3 but mount say that its not a block device. (File say Its a character special device). Added output from dmesg: [ 97.454073] usb 7-1: USB disconnect, address 2 [ 105.913055] hub 2-0:1.0: unable to enumerate USB device on port 3 [ 107.048054] usb 2-3: new high speed USB device using ehci_hcd and address 5 [ 107.162900] usb 2-3: New USB device found, idVendor=1b1c, idProduct=1ab8 [ 107.162903] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [ 107.162906] usb 2-3: Product: CSSD-R60GB2 [ 107.162908] usb 2-3: Manufacturer: Corsair [ 107.162910] usb 2-3: SerialNumber: 10111441000000990069 [ 107.167651] scsi7 : usb-storage 2-3:1.0 [ 108.195543] scsi 7:0:0:0: Direct-Access Corsair CSSD-R60GB2 PQ: 1 ANSI: 0 [ 108.197732] scsi 7:0:0:0: Attached scsi generic sg3 type 0

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• Move files from ftp server to s3

  - by lev

  I would like to set up an ftp server, where users will upload files, and for each file, put it on s3 storage, and delete it from the ftp server. (the server runs on ec2 ubuntu) Here are the stuff I already tried, with no success.. Mount s3 bucket using s3fs. I followed those instructions, but there is a bug in the latest version of s3fs, that prevents it from working. The bug was fixed on the develop branch, but I don't want to use unstable version on my production. Use vsftpd and using s3cmd sync via cron to sync the files periodically. The problem with that approach, is that s3cmd can start running in the middle of a file upload, and start synching the incomplete file. Also s3cmd doesn't give any feedback it the sync fails, so I have no way of knowing if I can delete the files after the sync command finished running. Use pure-ftpd's upload script feature (which allows to run a script after a file is finished uploading), but I noticed that if the file upload was failed in the middle, the script will run anyway, and I have no way of knowing if the upload was successful or not. I've been at it for a few days now, and I'm at a loss here. Any suggestions will be welcomed.

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• Array on servers which receive several hundred GB of data a day

  - by Matthew

  This is hopefully a simple question. Right now we are deploying servers which will serve as data warehouses. I know with raid 5 the best practice is 6 disks per raid 5. However, our plan is to use RAID 10 (both for performance and safety). We have a total of 14 disks (16 actually, but two are being used for OS). Keeping in mind that performance is very much an issue, which is better - doing several raid 1's? Do one large raid 10? One large raid 10 had been our original plan, but I want to see if anyone has any opinions I haven't thought of. Please note: This system was designed for using Raid 1+0, so losing half of the raw storage capacity is not an issue. Sorry i hadn't mentioned that initially. The concern is more whether or not we want to use one large Raid 1+0 containing all 14 disks, or several smaller raid 1+0's and then stripe across them using LVM. I know the best practice for higher raid levels is to never use more than 6 disks in an array.

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• Whats the best cloud backup solution for a small scale server envoirnment?

  - by nbv4

  I have a server that runs a postgres database that contains about 200MB of data. Currently I have a cron job setup on my home computer which: ssh's into my server runs a remote script which makes a backup of the database scp's that dump over to my local hard drive for storage. Each dump is 20MiB. does this every six hours (one months of backups is roughly 2GiB) The problem with this setup is that if my local machine goes down for whatever reason, no backups will be made. Also, I can't have the cron run from the server, because I can't have it scp'd to my local machine from my server (firewalls and all that crap). My local machine is running Ubuntu 10.04, and my server is Ubuntu 9.10 server edition. I looked into Ubuntu One, but currently it's gui-only. I also looked into dropbox, but it's a pain in the ass to get setup in linux without gui support. Amazon S3 looks good but it's not free (yet dirt cheap). Is there any other alternative that I should look into? I'd prefer something where I can just have my script dump the database into a directory, and have the backup service 'watch' that folder and sync accordingly. I can maybe also have my local machine sync to the cloud backup so I have even more redundancy, plus easy access to my backups for use in testing.

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• central apache log analysis of many hosts

  - by Jason Antman

  We have 30+ apache httpd servers, and are looking to perform analysis on the logs both for historical trending and near "real time" monitoring/alerting. I'm mainly interested in things like error rates (4xx/5xx), response time, overall request rate, etc. but it would also be very useful to pull out more compute-intensive statistics like unique client IPs and user agents per unit of time. I'm leaning towards building this as a centralized collector/server/storage, and am also considering the possibility of storing non-apache logs (i.e. general syslog, firewall logs, etc.) in the same system. Obviously a large part of this will probably have to be custom (at least the connection between pieces and the parsing/analysis we do), but I haven't been able to find much information on people who have done stuff like this, at least at shops smaller than Google/Facebook/etc. who can throw their log data into a hundred-node compute cluster and run Map/Reduce on it. The main things I'm looking for are: - All open source - Some way of collecting logs from apache machines that isn't too resource-intensive, and transports them relatively quickly over the network - Some way of storing them (NoSQL? key-value store?) on the backend, for a given amount of time (and then rolling them up into historical averages) - In the middle of this, a way of graphing in near-real-time (probably also with some statistical analysis on it) and hopefully alerting off of those graphs. Any suggestions/pointers/ideas, to either "products"/projects or descriptions of how other people do this would be greatly helpful. Unfortunately, we're not exactly a new-age-y devops shop, lots of old stuff, homogeneous infrastructure, and strained boxes.

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• What Windows service binds a NIC to the network?

  - by Bigbio2002

  I have a server that takes several minutes for the NIC to bind itself to the network upon startup (it has a statically-configured IP). This causes DNS/WINS/Intersite Messaging to fail to start, since they're dependent on a network connection. While I'm still attempting to find a root cause to this issue (I've done firmware updates, checked for any odd drivers/services, no luck so far), but in the meantime, I want to adjust the load order of services to ensure that the NIC binds first before these services attempt to start. The only question is, which service is it? The server is running Server 2008 R2 and only has one NIC installed. (On a side note, there are two other small but odd problems occuring with the server. The server had the issue described in KB2298620, which I've fixed. The other problem occurs in Windows Server Backup. No events appear in the upper portion of the window, despite the fact that backups are running in the background. Whenever I attempt to modify the backup schedule, it gives me the error "Not enough storage is available to process this command" and appears to fail, when, in fact, it actually succeeds. These may be separate issues, but something tells me that some of these might share a common root cause.)

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• KVM and libvirt: How to configure a new disc device to an existing VM?

  - by initall

  I've got an Ubuntu 9.04 server running two VM's. In /etc/libvirt/qemu/machine1.xml two disk devices are defined like this: <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <source file='/vserver/machine1/disk0.qcow2'/> <target dev='hda' bus='ide'/> </disk> <disk type='file' device='disk'> <source file='/vserver/machine1/disk1.qcow2'/> <target dev='hdb' bus='ide'/> </disk> I need more storage space in at least one of the devices and thought about adding a third hdc device by simply adding one with same style as above and re-organising my mount structure (The virtual sizes of the current qcow2 files are unfortunately limited.) My problem is that reloading libvirtd and restarting the VM do not result in a new visible device (checked with fdisk). I'm aware of extending an existing qcow2 file (converting to raw format, cat-ing/adding the new one, using smth. like gparted) - but only as a last resort. Hopefully it's something very simple I'm missing?

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• Server slowdown

  - by Clinton Bosch

  I have a GWT application running on Tomcat on a cloud linux(Ubuntu) server, recently I released a new version of the application and suddenly my server response times have gone from 500ms average to 15s average. I have run every monitoring tool I know. iostat says my disks are 0.03% utilised mysqltuner.pl says I am OK other see below top says my processor is 99% idle and load average: 0.20, 0.31, 0.33 memory usage is 50% (-/+ buffers/cache: 3997 3974) mysqltuner output [OK] Logged in using credentials from debian maintenance account. -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.63-0ubuntu0.10.04.1-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 370M (Tables: 52) [--] Data in InnoDB tables: 697M (Tables: 1749) [!!] Total fragmented tables: 1754 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 19h 25m 41s (1M q [28.122 qps], 1K conn, TX: 2B, RX: 1B) [--] Reads / Writes: 98% / 2% [--] Total buffers: 1.0G global + 2.7M per thread (500 max threads) [OK] Maximum possible memory usage: 2.4G (30% of installed RAM) [OK] Slow queries: 0% (1/1M) [OK] Highest usage of available connections: 34% (173/500) [OK] Key buffer size / total MyISAM indexes: 16.0M/279.0K [OK] Key buffer hit rate: 99.9% (50K cached / 40 reads) [OK] Query cache efficiency: 61.4% (844K cached / 1M selects) [!!] Query cache prunes per day: 553779 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 34K sorts) [OK] Temporary tables created on disk: 4% (4K on disk / 102K total) [OK] Thread cache hit rate: 84% (185 created / 1K connections) [!!] Table cache hit rate: 0% (256 open / 27K opened) [OK] Open file limit used: 0% (20/2K) [OK] Table locks acquired immediately: 100% (692K immediate / 692K locks) [OK] InnoDB data size / buffer pool: 697.2M/1.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Enable the slow query log to troubleshoot bad queries Increase table_cache gradually to avoid file descriptor limits Variables to adjust: query_cache_size (> 16M) table_cache (> 256)

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• I need a driver for my Cardbus USB 2.0 card

  - by Carl

  The picture and details of the card are here: http://www.ht-link.com/en/ProductView.asp?ID=106 The Windows drivers for this don't work right. I tried them on my previous laptop, and then installed the ones off their included CD. (Note that the systems requirements includes a CD-ROM drive...) I have a new laptop, and lost the CD. The website that lists the drivers is broken - the download links don't work. It is here: http://www.ht-link.com/en/DownView.asp?ID=10 I need the very first link - The Win XP drivers for the HT-112NEC. The company does not reply to my e-mails. I've tried searching Google for other sources for the driver (I didn't bother with those sites that want me to install driver detection software or create a log-in for their site). [Here's the problem I am getting using the drivers Windows XP SP3 installs: When I plug in my USB 2.0 hard-disk adapter, a USB Mass Storage Device entry is added in the Device Manager, but there is no entry under Disk Drives, and a drive letter is not assigned, so I can't access the driver. Like I said, this card didn't work without their special drivers on my other laptop, either.]

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• Move EFI System Partition to another drive

  - by Pincopallino

  I had a Windows 8 installation on an HDD, using UEFI as boot. The HDD has the following GPT table: DISKPART> list partition Partizione ### Tipo Dim. Offset --------------- ---------------- ------- ------- Partizione 1 Ripristino 300 Mb 1024 Kb Partizione 2 Sistema 100 Mb 301 Mb Partizione 3 Riservato 128 Mb 401 Mb Partizione 4 Primario 390 Gb 529 Mb Partizione 5 Primario 540 Gb 390 Gb (I apologize it's in Italian, but the translation is quite straightforward). I recently bought an SSD drive, connected it and installed a fresh Windows 8. Now I have a working dual boot, but the UEFI partition is on the HDD instead of the SSD. Here's the SDD partition list: Partizione ### Tipo Dim. Offset --------------- ---------------- ------- ------- Partizione 1 Riservato 128 Mb 1024 Kb Partizione 2 Primario 221 Gb 129 Mb I think that the best solution would be to have it on the SSD for two reasons: the first is performance (I guess it would be a little be faster on the SSD due to the spin up time for an HDD, but I may be wrong about that) second reason is consistency. As I plan to use only the Windows 8 installation that is located on the SSD and I'm probably going to erase the system partition on the HDD to use it as a data storage device, I think that the boot partition should be on the same drive as the OS. So the question is how do I move the EFI System Partition to the SSD?

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• Software raid 0 with six disks performance

  - by user134880

  I have some problems with disk performance. I have 6 x WD 500Gb RE4 disks. Each disk gives 135Mb/sec throughput. All measurements are made with hdparm with options "-tT" (I know that it is just synthetic test, but I need some start point to make measurements). I have controller with Sil3124 x 4 ports PCI Express 1x So... RAID0 on controller with 2 disks gives 200Mb/s - ok, pcie limit. RAID0 on motherboard with 2 disks gives 270Mb/s - niceeee :) RAID0 on contorller with 4 disks gives 200Mb/s - ok, pcie limit. RAID0 on controller with 4 disks + 1 disks on motherboard = 340Mb/s ... :( RAID0 on controller with 4 disks + 2 disks on motherboard = 300Mb/s .... why? Any ideas? Maybe need more cpu power? Now there is Pentium D Dual core 2.8Ghz, 4Gb RAM. It is dedicated box for storage.. no other activity.

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• How to setup RAID 1 with Intel RST on an existing Windows 7 system?

  - by instcode

  I'd like to setup RAID-1 using Intel Rapid Storage Technology on my Windows 7 64-bit system. I have an 1TB SATA HDD with Windows 7 system installed on the first primary partition (leftmost, ~200GB). The rest of this HDD is unallocated (~800GB). I bought another 2TB SATA, then created a primary partition (leftmost, ~500GB) and filled my data in. The rest of this HDD is unallocated (~1.5TB). A quick disk layout (XXX is the unallocated region): HDD1 (1TB): [ 200GB C:\ SYSTEM | XXXXXXXXXXXX ] HDD2 (2TB): [ 500GB Z:\ PROGRAM | XXXXXXXXXXXXXXXXXXXXXX ] Now, I want to create a 500GB RAID-1 partition (I'm not sure if using "partition" is correct here) on the rightmost of the 2 HDDs above without losing any existing data from both disks. Here is the expected layout: HDD1 (1TB): [ 200GB C:\ SYSTEM | XXXXXX | 500GB D:\ DATA - RAID-1 ] HDD2 (2TB): [ 500GB Z:\ PROGRAM | XXXXXXXXXXXXXXXX | 500GB D:\ DATA RAID-1] Let's not concern about data lost, is it possible to have that final layout using Intel RST? Previously, I tried this layout using dynamic disk & software RAID from Windows and it worked as expected, however, it's quite ugly in resynching after an OS failure that I don't want. If yes, is there a way to keep the data on existing partitions untouched or, at least, it should keep the SYSTEM partition safe (I'm okay if the PROGRAM partition has to be gone.)? Well, are there any strict/special steps I should follow when using the Intel RST manager in order to achieve that? If none of those questions above are "Yes", could you please suggest some other possible layouts that leave the C:SYSTEM partition untouched?

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• hyper-v cluster behavior when losing network connectivity

  - by ChristopheD

  Setup: (rather new) Hyper-V R2 cluster with 2 nodes (in failover configuration). Fysical host OS: Windows Server 2008. About eight VM's (mixed: Windows Server 2008 and Linux) Yesterday we had a power outage of about 15 minutes. Our blades are on UPS so the fysical host machines (Windows Server 2008) never went down. Our main switches are not on UPS (yet) and we saw the behaviour similar to the following (as distilled from the event logs). The nodes in the cluster lost means of communication (because the external switches went down). The cluster wants to bring down one (the first) of the nodes (to start failover?). The previous step impacts clustered storage where the virtual machine VHD's are located. All VM's got brutally terminated and were found in a failed state in the failover manager in the host OS'es. The Linux VM's were kernel panicking and looked like they had their disk ripped out. This whole setup is rather new to us, so we are still learning about this. The question: We are putting switches on UPS soon but were wondering if the above is expected behavior (seems rather fragile) or if there are obvious improvements configuration-wise to handle such scenario's ? I can upload an evtx file concerning what exactly was going on in case that's necessary.

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• Whats the best cloud backup solution for a small scale server environment?

  - by nbv4

  I have a server that runs a postgres database that contains about 200MB of data. Currently I have a cron job setup on my home computer which: ssh's into my server runs a remote script which makes a backup of the database scp's that dump over to my local hard drive for storage. Each dump is 20MiB. does this every six hours (one months of backups is roughly 2GiB) The problem with this setup is that if my local machine goes down for whatever reason, no backups will be made. Also, I can't have the cron run from the server, because I can't have it scp'd to my local machine from my server (firewalls and all that crap). My local machine is running Ubuntu 10.04, and my server is Ubuntu 9.10 server edition. I looked into Ubuntu One, but currently it's gui-only. I also looked into dropbox, but it's a pain in the ass to get setup in linux without gui support. Amazon S3 looks good but it's not free (yet dirt cheap). Is there any other alternative that I should look into? I'd prefer something where I can just have my script dump the database into a directory, and have the backup service 'watch' that folder and sync accordingly. I can maybe also have my local machine sync to the cloud backup so I have even more redundancy, plus easy access to my backups for use in testing. Edit: My server is a VPS, so what solution I end up using has to be 100% software based.

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• Postfix auto create Maildir

  - by Eugene

  I've been beating my head against a wall for a while now on this one. Basically, here is the rundown: Our MX record points to a frontend SMTP server, which contains aliases for actually routing the mail. No alias, no access to the backend storage server, which is what our clients connect to. I'm upgrading the backend email server. Currently, a user is created for every email user on the server, which creates the mailbox. On the new server, everything autheticates through PAM to an LDAP server (all of which is working properly). My goal is to get Postfix to create the Maildir directory for the user automatically. This works fine when I have the /home directory with 777 permissions, but for obvious reasons, this should be avoided. I would like to do this with 775 permissions on /home with a group owner of whatever user Postfix is running as, but I can't seem to figure out what user to use. With the 777 permissions, the /home/$user/Maildir directory is created on message delivery. Does anybody know how I can do this without 777 permissions? The system I am working on is a 64-bit Debian Lenny 5.07 install. Any advice would be appreciated.

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• How to safely move where itunes saves music/iphone apps/and meta data to another internal Drive?

  - by GingerLee

  In the past, when I have moved my itunes data from one computer to another, I usually just follow these steps: Copy the contents of two folders: %USERPROFILE%\Music\iTunes %USERPROFILE%\AppData\Roaming\Apple Computer 1) Install iTunes on the new computer, start it and close it (don't let it search for music). 2) Copy all the files in the above folders from old PC to new PC. 3) Start iTunes and authorize the new computer (and deauthorize old one). 4) Before syncing, update all iphone apps to current versions on both my iphone and in itunes. 5) The Sync. The above steps always work for me, and basically Itunes on my new PC works exactly as it did on the old PC. My Question: In the hopes of bybassing the above steps in the future, I would like to just have Itunes use another internal Drive that I use for file storage (e.g. D:/) as the path for the above two directory? Then if I move to new PC again, I could just setup itunes to use the correct path. Is that possible yet with minimal implications? If so how?

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• Disable internal display on Macbook Pro without closed lid mode?

  - by jslaker

  I have an early 2007 Macbook Pro running 10.5 that I've recently set up on a KVM with my primary desktop system. The problem I've run into is that I have a 20" 1680x1050 LCD, and OS X only provides options to mirror at the resolution of the built-in display or to span. Since the built-in display runs at 1440x900, this leads to running my LCD at non-native res and a fuzzy picture. There isn't any option that I can find to simply disable the built-in display entirely and run the external LCD at its native resolution. I am aware of closed lid mode, but the MBP was disassembled while in storage for about 6 months (took it apart to pull the HDD) and the cable to the touchpad, which controls the sleep sensor was damaged, meaning closed lid mode won't work. I've looked into replacing the cable, but the cheapest I've been able to find it is $75-100, and I'm trying not to invest any more money into this computer as it also has a completely dead battery and a few other minor problems. I've found the app SwitchResX which appears to allow you to do what I need, but it has a lot of functionality I don't need and a ~$20 registration charge attached to it. An odd set of circumstances, I'm aware, but I was hoping somebody might know of an OS hack that would let me just disable the internal display and be done with it. :)

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