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Offline Files (Background) Sync makes File Explorer and other programs responding slow

November 13, 2014, 2:40 am
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Hi TechNet,

I have a problem with Offline Files and especially with VPN users.
For VPNusers, theslow-link policy is activated with abackground syncinterval of onehour. But, when Offline Files is syncing, their File Explorer is hanging (not responding) by creating new files/folders, deleting files/folder, or rename files/folders. This happens only in their (redirected)UserData folder or with other DFS shares which are cached locally. In other programs (Outlook or Office 2010) when they save data in the UserData folder exactly the same things happens (not responding).Thisproblemoccursin both theinternal network and viaVPN,sobandwidth isnot the problem. When the sync is finished, everything is working fine again.

I've tested:

- Offline mode with scheduled background sync: problem occurs
- Online mode with manual sync: problem occurs
- Rebuild offline cache database: no effect
- Tested with fresh Windows 8(.1) installations and user profiles: problem occurs
- Monitoring SMB traffic with WireShark: no result
- Montoring Windows 8(.1) clients with procmon: no result
- Tested with full DFS paths: problem occurs
- Disable IPv6: problem occurs
- Disable Windows Search: problem occurs

- Browsing in the Offline Files folder (Sync Center -> Manage Offline Files -> View Offline Files) is very slow (with +- 200 files). This occurs also when Offline Files is not syncing.

Does anyone have anidea how I cansolve this problem?

Thanks,
Bas

(Sorry for my bad English)


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Cannot optimize volume - Receive error "The specified extrinsic Method does not exist"

November 13, 2014, 2:33 pm
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When I try to optimize a volume on a server running Windows Server 2012 (R1). I receive the below error. This volume is an ISCSI target to our Compellent SAN. Other Servers don't have an issue with volumes created on the same SAN and I have already ran ChkDsk and it returned no errors. Oddly enough I can run a "Defrag T: /D" but a "Defrag T: /O" returns"Incorrect Function. (0x80070001)" (Incidentally an "Optimze-Volume T -Defrag" also works) 

Any Ideas? I'm stumped!

Command:

Optimize-Volume -DriveLetter T -Verbose

Error:

VERBOSE: Invoking slab consolidation on iSCSI_SAN01_ExchLogFiles (T:)...
VERBOSE: Slab Analysis:  100% complete.
optimize-volume : The specified extrinsic Method does not exist.
At line:1 char:1
+ optimize-volume -DriveLetter T -Verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : MetadataError: (MSFT_Volume (Ob...2-a802-ba7e...):ROOT/Microsoft/...age/MSFT_Volume) [Optimize-Volume], CimException
    + FullyQualifiedErrorId : MI RESULT 17,Optimize-Volume

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Even though delete all of files on disk that the deduplicated volume but volume size could not be reduce.

November 28, 2014, 9:22 am
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When I enable data deduplicating on server 2012-R2  I can reduce data space on that volume. For exp. Before deduplication I have 5 GB data on disk. After deduplication It is reduce 2.5 gb data. And then I delete all of files and folders in that volume for test. So I expect to disk size is become  0 GB . But it still appears 2.5 GB using. But I wonder why that size didn't reduse.  Could anyone to help me.
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WIN2012 R2 DFSR with EMC NAS

November 18, 2014, 10:07 pm
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Plan to install Win2012 R2 as DFS server. We hope its advantage of replication can overcome speed issue on WLAN.

We have EMC VNX5300 as a NAS to hold shared folders. Then, branch users open files in shared folders very slow as speed issue on WLAN. We plan to use Win2012 R2 as DFS server to share these shared folder on NAS. What I concern is that as our shared folders are not on DFS server local disks (they are on NAS). So, the performance is perfect or not when both DFS server and EMC NAS work together? why I ask the question is we already have performance issue that I explain above. We want to let them work together to fix the issue. If both can't provider a perfect performance, we can't reach our goal.

Thanks,

George

yxh

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free space on 250gb wont start new volume

November 29, 2014, 1:26 am
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hi i have a 250 GB Samsung external hard-drive but for some reason it only showed me 58.8 GB available so when i opened the disk manager it said there is 116.14 FREE SPACE so i tried making a new volume of that but it won let me it keep saying there is not enough space on disk to complete this operation i really need this space since im formatting my computer and i need that hard drive to take some of my stuff on the computer right now ill appreciate any help thank you
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Recover deleted files from mirrored dynamic disks

November 28, 2014, 7:52 pm
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Hi,

I need to recover files and folders that were deleted by robocopy. I was running a backup of existing photos from one server to another server (Windows server 2008) using the robocopy /mir command. The destination folder had an existing folder in it that contained other photos but because this folder was not in the source folder then it was deleted by robopcoy. The destiantion folder is on a software mirrored dynamic disk. I need to recover this destination folder, but have not had any luck. I have avoided writing any more data to the destination drive to prevent data loss. I am also not able to use the previous version option as this is not enabled.

So far I have tried using recuva, photorec and even a paid utility Active @ Uneraser but they cannot perform a straight forward undelete. I have to go to the deep scan method which doesn't recover the original file and path names. Even then I don't think I am getting the files I need back (there are a lot files to sort through) as the creation dates don't match up with the ones I am after. 

My real question is, does a dynamic mirrored volume allow undelete? So far it doesn't seem so. Is it possible that these files are completely unrecoverable? Any help would be appreciated.

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Error removing physical disk marked as Retired

June 19, 2013, 5:46 pm
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I have Server 2012 with one storage pool and one virtual disk. The virtual disk uses layout parity and thin provisioning. It contained 4 physical disks. One of the physical disks failed. It was pulled and larger replacement disk was added.

The server manager now lists the failed drive as "Retired". Every attempt to remove the disk results in:

Error removing physical disk: There was an error removing {179f49b7-7657-11e2-93ea-806e6f6e6963} (fileserver). One of the physical disks specified could not be removed because it is still in use.

If I check the properties of the virtual disk, it states under health: "Physical disks in use", and lists the retired drive as "Lost Communication".

The physical drives have lots of free space, and the new drive has been added to the storage pool (but not the virtual disk). The "repair virtual disk" option is grayed out.

It seems I cannot attach the virtual disk until I remove the retired drive.

How can a disk that's sitting unplugged in another room be "in use"? How do I remove the retired drive?


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Unable to access DFS Folder

November 29, 2014, 6:08 pm
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Hey Technet,

I have a strange problem while accessing dfs folders. As per below, when i try to access folders hosted on different nodes, im able to access, but when i try to access dfs folders hosted from the same node, it gives me the below error-

But when i try to access resources of different folder, im able to access-

C:\Users\Administrator>dir \\room.com\Root\Movies2
 Volume in drive \\room.com\Root has no label.
 Volume Serial Number is B45C-9EA6

 Directory of \\room.com\Root\Movies2

07/25/2014  07:05 PM    <DIR>          .
07/25/2014  07:05 PM    <DIR>          ..
06/10/2014  11:12 AM    <DIR>          13 Sins (2014)
01/23/2014  10:18 PM    <DIR>          22 Female Kottayam
05/21/2014  10:58 PM       734,958,866 2States (2014) [Hindi DVDScr - XviD - 1CDRip - 700MB].avi

Kindly address this issue.

Regards, Alan.

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Can't take ownership of files with take own get access diened

February 17, 2012, 6:28 am
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Good afternoon all,

I've some files where can't take the ownership of. I've tried every and searched allot of technet and the rest of google.

When is ue:

Takeown /f *.* /r /a /d y

i get like 4 succes messages and 16 INFO: Access is denied.

I need to copy/cut the files to new storage, can someone help me please??

I am a member of the adminsitrator group
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Can anyone force windows 7 X64 to accept Adaptec AHA-2940 SCSI card?

October 9, 2009, 10:46 am
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Adaptec 2940 had 64 bit drivers for 2003 server and xp X64 and can run in emulation mode using aic78xx.sys in x86 windows7.
Is it at all possible to get this card to install for use in windows 7 x64??

There are a lot of people out here in "never" land that would like to know this answer  .  particularly if you can describe how to do this ...

Cheers
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WinSXS CleanUp Issue

November 25, 2014, 4:28 am
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I have a Windows Server 2008R2 SQL Server. All updates to date, and a gigantic WinSXS folder. Bottom line is that I need to clean it up. Ok, but when I run Disk Cleanup WITH ADMINISTRATOR PRIVILEGES I still don't have the Windows Update Clean. I also downloaded the updates from the Microsoft website but they say not required for my machine. What's going on? I heard that an update from august 2014 may remove the Windows Update Cleanup?

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DFS Replication Setup Rrror on different domains : The server's operating system version cannot be retrieved. The network path cannot be found

November 30, 2014, 10:11 pm
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We have old DFS servers (W2008) on one domain and I have just recently setup new W2012 R2 servers that will act as new DFS servers on a different domain. To tabularized it, let's say the following servers below, note they belong to the same forest:

DFS01.ASIA.WORLD  --> W2008 server on ASIA.WORLD domain

DFS02.ASIA.WORLD --> W2012 Standard server on ASIA.WORLD domain

DFS03.EUROPE.WORLD -->W2012 R2 on Europe domain

DFS04.EUROPE.WORLD -->W2012 R2 on Europe domain

If i configure replication group between DFS01 and DFS02 (both server on same domain), the setup works fine. If i try to configure replication group between DFS03 and DFS04( both server on same domain), it works fine as well.

But i try to setup DFS replication using the DFS new Replication Group Wizard on DFS01 (as source) to replicate on DFS04 (as destination). It throws me an error "The server's operating system version cannot be retrieved. The network path was not found". If i do it the other way around reversing the source and destination, it also gives me the same error.

The first thing that came to my mind is obviously trust relationship between domains. but both domains have been around for quite some time and there had been both users and workstations and servers that are existing on both domains and we have all been using and logging to them everyday.

On both servers, both Domain Admins group of ASIA and EUROPE are already added on both servers as Local Administrators and of course I'm logged on on both server using an account that is member of the Domain Admin group.

had tried searching Google and it only gives me one item about this, but does not contain helpful information.

Can you please direct me on items that i can check? thank you.

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Windows 2012 R2 - Access problems to NFS shares via IPv6

November 7, 2014, 2:57 am
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Hello,

we setup some NFS shares on HNAS storage box. The connection to this storage is only possible over IPv6 network.

My server with Windows 2012 R2 has the feature 'Client for NFS' installed and a 'showmount -e servername/or IPv6 address' works. I can see all shares when i try to open the storagebox in Windows Explorer with the command "\\servername" or "\\IPv6 address", too. 

My problem is, when I try to mount the share via "Map network drive" or "mount \\servername\sharename *" I get Error 53 - Network path not found.

The share is configured that every server in the IPv6 subnet could access it and it works on Unix machines, but not on Windows. 

It does not matter if i set some option parameters for the "mount" command like sec=sys or anon, everytime error 53.

I don't know, if the share needs special options for Windows. I hope somebody can help.

Kind regards

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Windows Basic Disk with MBR Aligned to LBA 0

November 3, 2014, 12:38 pm
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Guys, I have noticed that on some of my windows VMs, there are Windows Basic Disk with MBR and primary partitions aligned on LBA 0:

BlockSize  DeviceID               PrimaryPartition  StartingOffset  Type

512        Disk #0, Partition #0  TRUE              1048576         Installable File System

512        Disk #1, Partition #0  TRUE              1048576         Installable File System

512        Disk #2, Partition #0  TRUE              1048576         Installable File System

512        Disk #3, Partition #0  TRUE              0               Installable File System

512        Disk #4, Partition #0  TRUE              0               Installable File System

512        Disk #5, Partition #0  TRUE              0               Installable File System

512        Disk #6, Partition #0  TRUE              0               Installable File System

512        Disk #7, Partition #0  TRUE              1048576         Installable File System

512        Disk #8, Partition #0  TRUE              0               Installable File System

512        Disk #9, Partition #0  TRUE              1048576         Installable File System

How is this possible? Shouldn't the MBR be at LBA 0?

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Windows 2008 Alignment of Drivers less than 4GB

July 22, 2014, 7:11 am
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Guys, why does Windows 2008/2008R2 align drives that are less than 4Gb to 65536 and all drives larger than 4GB to the 1MB boundary (1048576)? It's not uncommon on virtual machines to present small drives for holding logs etc. Also common when using SANS. I'm wondering what the decision process was behind this? I understand of course the reason to align to a 4K boundary due to modern driver sector size. 
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FailoverClustering Event ID 5125

September 19, 2014, 6:05 pm
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I have two Server 2012 Hosts running in a cluster with some CSV's setup. I just recently started receiving this warning on one of the hosts. The host has also blue screened a few times. I'm trying to figure out what these drivers might be. Does anyone know how I can see what filter drivers are loaded and potentially remove them? I thought the issue may be related to the anti-virus software that was installed but the issue is still present after removing the software and rebooting the server.

Cluster Shared Volume 'LUN' ('') has identified one or more active filter drivers on this device stack that could interfere with CSV operations. I/O access will be redirected to the storage device over the network through another Cluster node. This may result in degraded performance. Please contact the filter driver vendor to verify interoperability with Cluster Shared Volumes.

Active filter drivers found:

(Chinese Characters)????䠀???e???????Q?????N???I????㐀㠀?Q?H?????Q??

Vincent Sprague

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Windows server 2012 R2 hangs on boot when connecting two SAS cables

December 1, 2014, 7:05 am
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Hi,

I currently have a problem with my SOFS servers. I'm using 3 Dell Poweredge R720's with Dell 6Gbps SAS HBA cards inside to connect 3 DataOn 1640 JBOD's. I have installed all the latest (1 December 2014) windows updates, drivers and firmware in place.

When I connect both SAS cables to the HBA card Windows hangs at the boot screen (already waited 3 days to see if it just needed some time). As soon as I disconnect one of the SAS cables, the booting continues.

It doesn't matter which cable is connected, when they're connected seperately the server boots, when they're connected at the same time, the server hangs at boot time. This happens on all 3 servers. Any way to debug the bootproccess? ntbtlog.txt doesn't really tell me anything usefull...

Thanks in advance! 

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2012 R2 DFS-R stops replicating content between members when folder permissions changed

November 12, 2014, 1:31 pm
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Hello,

Since upgrading our DFS member servers (one is a physical DC, other is a VM dedicated to DFS role only) to 2012 R2 I keep getting caught in a weird replication problem. I finally found out when the problem starts, it's the change of Folder access permissions, e.g. removing or adding a user account or group and I don't get it why exactly contents of such folder end up completely mismatched between DFS member servers.

To start from beginning, an example

Both DFS servers have a dedicated NTFS volume Y: with only 1 folder in it named Folder1 which is shared and added as Folder target on both DFS member servers. Replication group exists for that Folder1 and data is in perfect sync. New/altered content is properly replicated to other members server in no time (<1s), everything works perfectly well.

Now, Folder 1 contains a dozen sub-folders with permission inheritance enabled, data de-duplication is enabled as well as FSRM file screening to avoid temporary files, thumbs.db and other junk of that sort. Let's say Subfolder1 requires admin to change permissions so certain group of users get a read-only access to files stored inside while others can retain modification permission to put new files or so.

The moment I do that change it triggers a problem with DFS-R and I end up with proper copy of that sub-folder on DFS1 (physical server acting as DC) and maybe around 5-10% of content on DFS2 ... why is that so that a simple permission change operation breaks the DFS-R every time? When that happens the DFS2 never gets those missing files, just like it didn't know it should have those.

DFS Health Report shows file count mismatch and regular File Sharing Violations from some opened files, but there is no mention of why the darn DFS2 is missing 90% of files in certain sub-folders ... it's so annoying ...

I found only 1 workaround for this problem so far, that is to manually pull out all files from affected sub-folder and get them out of shared Folder1 (simple cut and paste to new temporary folder on same volume works) on DFS1, so DFS2 clears that problematic Subfolder1, and then manually dropping the files back in place on DFS1, later all is good on both servers ... pretty weird if you ask me.

I don't recall seeing this problem on "slow" 2008 R2 DFS-R ... Also I tested if maybe FSRM screening rules or data de-duplication has anything to do with problem, but they don't.

Does anybody else see this behavior between 2012 R2 DFS members?


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2012 R2 SRV.Sys memory leak?

December 1, 2014, 10:27 am
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I am fighting a memory issue on my 2012 R2 Domain Controllers.  The RAM consumption continually increases until there is either no RAM left or the server is rebooted.  

Using Poolmon I was able to potentially narrow the issue down to VNet.  I was then able to determine this is associated with SRV.sys drive.  A little research shows me this may be due to SMB traffic.  My DCs also host the DFS namespaces.  So, I run DFS BPA and see the report of "Srv.sys is not set to start on demand".

It seems that if Srv.sys is always running and not set to on demand it may not be giving RAM back to the system.  

My questions is, if I set this to on demand are the any potential issues with DFS or anything else I could run into?

Is this a known issue?  I did not have this issue on my 2008 R2 DCs.

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DFS-R Restore Access To Path Denied Error

November 14, 2014, 4:22 am
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I am trying to restore the contents of ConflictsAndDeleted folder to a desired location withRestore-DfsrPreservedFiles cmdlet but the command breaks after restoring only a 7-level folder tree up to a file within the seventh folder with "Access to Path denied" error.

The path to the file is just 201 characters long so it is not a path too long issue.

Could someone be of help here please.

BPK

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