VM 3.2.3 Problem attaching virtual disks

OVM Server: 3.2.3-521
OVM Manager: 3.2.3-521
Guest machine: Oracle Solaris 10 x86.
As per documentation, on guest machine can be attached 4 IDE disks and 7 SCSI disks. Using VM manager I can’t attach more than 4 virtual disks to this machine. Also Oracle Solaris has built-in PV drivers, so in this case up to 52 disks can be attached.
How to attach more than 4 virtual disks to the guest machine?
Regards,
Kosta

Thanks, for your responce.
Guest machine is created as domain type: XEN HVM, PV Drivers.
Regards,
Kosta

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After I reinstalled Windows Server 2012 R2, I cannot attach my virtual disk

Hello,
After I reinstalled Windows Server 2012 R2, I cannot attach manually my virtual disk "MOVIES" :
http://windowsitpro.com/systems-management/q-after-i-reinstalled-windows-server-2012-my-storage-spaces-are-no-longer-writabl
When i try this command : (http://technet.microsoft.com/fr-fr/Library/hh848641.aspx)
PS C:\>Connect-VirtualDisk –FriendlyName "MOVIES"I'have this error :PS C:\Windows\system32> Connect-VirtualDisk -FriendlyName "MOVIES"
Connect-VirtualDisk : Failed
Au caractère Ligne:1 : 1
+ Connect-VirtualDisk -FriendlyName "MOVIES"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (StorageWMI:ROOT/Microsoft/...SFT_VirtualDisk) [Connect-VirtualDisk], CimE
   xception
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Hello Elton,
I tried
numerous powershell
command to do anything
but I'm
lack of ideas.
All my disk are OK :
but
how can I do to make a
CheckDisk on a virtual disk because
there is no letter corresponding to the volume
It's only when i try to connect VirtualDisk to my Server
the problem happens ...
I try to repair the virtualDisk with powershell command :
PS C:\Windows\system32> Repair-VirtualDisk -FriendlyName MOVIESIt's works but it takes less than 2 seconds ...There is no solution?
I lost all my data? Can i try to delete virtual disk and recovery data with a recovery program,
is
that it might work?
Thanks you in advance for your help
Regards,
Nicolas

Problem when exporting a virtual disk backend twice

I have a t5140 server, with two 146G disks.
I have created 2 guest domains ,and want to install solaris for them.
Followed by the Logical Domains (LDoms) 1.0.3 Administration Guide , using the following command to export the second disk as a virtual disk backend multiple times:
ldm add-vdsdev /dev/dsk/c1t1d0s2 vdisk1@priamry-vds0
ldm add-vdsdev /dev/dsk/c1t1d0s2 vdisk2@primary-vds0
but it said:
Device /dev/dsk/c1t1d0s2 already used by another server in guest primary!

I have a t5140 server, with two 146G disks.
I have created 2 guest domains ,and want to install solaris for them.
Followed by the Logical Domains (LDoms) 1.0.3 Administration Guide , using the following command to export the second disk as a virtual disk backend multiple times:
ldm add-vdsdev /dev/dsk/c1t1d0s2 vdisk1@priamry-vds0
ldm add-vdsdev /dev/dsk/c1t1d0s2 vdisk2@primary-vds0
but it said:
Device /dev/dsk/c1t1d0s2 already used by another server in guest primary!

Disk Manager/Virtual Disk Manager Problem

I have an apparently working NAS drive that I can see, read. write to, and whatever as normal.
However backup/restore software cannot find the drive while Disk Manager shows it as "unknown" and "Not initialised" and Virtual Disk Manager reports it as "The Device is not Ready!"
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As I need to access the drive with a backup and restore prog does anyone know where I can go from here?

Hi,
Did you run Windows in a VM?
Please start virtual disk service and set its startup type as "Automatically".
Afterward, re-connect the drive into the computer for test. Remember to right click the disk and click to initialize disk.
If the issue still persists, please upload the disk management snapshot as below:
Karen Hu
TechNet Community Support

Problems using dbms_scheduler with attached network disks

Oracle 11.2.0.1
I created a job which run .bat - files.
dbms_scheduler.create_job(
        job_name => 'JOB_FILES',
        job_type => 'EXECUTABLE',
        job_action => 'e:\dump\abc.bat',
        auto_drop => FALSE,
        enabled => TRUE);
Content of abc.bat is
"E:\Oracle\product\11.2.0\dbhome_1\BIN\7za a e:\dump\den3_arch_171020131420.zip x:\mtr\"
Im trying to make an archive with files in some folder. In this example the folder is "x:\mtr\" where "x" is attached network disk.
When i run this job It creates null archive and raises error
ORA-27369: job of type EXECUTABLE failed with exit code: Incorrect function.
If in "abc.bat" i change network disk "x" to server disk with existing folder all works properly(It archives all files).
If i execute "abc.bat" from cmd window all works properly(It archives all files).
Ive created java source
create or replace and compile java source named "OSCommand" as
import java.io.*;
public class OSCommand{
public static String Run(String Command){
try{
Process p = Runtime.getRuntime().exec(Command);
p.waitFor();
return("0");
catch (Exception e){
System.out.println("Error running command: " + Command +
"\n" + e.getMessage());
return(e.getMessage());
and pl/sql function
CREATE OR REPLACE FUNCTION OSCommand_Run(Command IN STRING)
RETURN VARCHAR2 IS
LANGUAGE JAVA
NAME 'OSCommand.Run(java.lang.String) return int';
And it works like dbms_scheduler...
May be user need any special grants?

user617289 wrote:
Thats right. How can i resolve this issue?
when all else fails Read The Fine Manual
DBMS_SCHEDULER

Using a ZFS volume with encryption on as the Virtual disk in a Sparc VM

Hi guys,
Working my way through understanding how virtualization works in VM for Sparc. One question I thought of deals with having encryption turned on in a ZFS volume. If I create a volume with encryption ON, and then attach that volume as the sole virtual disk in a guest domain, will the virtualization still work? Has anyone else dealt with a scenario like this? I'm about to try it now, I'll report back with my findings.

From my understanding, if you create a ZFS disk with encryption ON, mount it on Solaris, and after that present that to the VM, you should not have problems. The encryption will work between the volume and Solaris. To the guest vm, it should be transparent.

There is no more space for virtual disk ServerName_2.vmdk. You might be able to continue this session by freeing disk space on the relevant volume, and clicking Retry. Click Cancel to terminate this session.   Time: 30/05/2014 1:16:20 AM

Recently, our mail server crashed at about 7pm one night, with the error 'There is no more space for virtual disk ServerName_2.vmdk. You might be able to continue this session by freeing disk space on the relevant volume, and clicking Retry. Click Cancel to terminate this session.'
When we click Retry, the server starts up OK.
There are no snapshots listed in Snapshot manager for any of the virtual machines on the host.
There is also free disk space available on the host and for the VM with the disk errors.
This happened at least three more times, often at bad times. Each time, we were able to click 'Retry' and the disk/system would allow the VM to start-up successfully.
I checked the Forums, the VMware support articles and the internet as I had not seen this problem before. I have completed the VSphere 5.1 - Fast Track course and this issue was NOT covered in the training.
Most of the advice on-line and even that on the VMware web-site was pointing to snapshots being the cause of this issue. There are no snapshots enabled and I cannot see evidence of snapshots ever being used.
- We are running VMware vsphere (5.1.0) and there are (were) 4 virtual machines running on the ESX host. We are using the free version of VMware/ESXi.
- The Hard disk types we are using for this Virtual Machine are 'Thin Provisioned'.
- There are 4 [Thin Provisioned] Hard Disks for this virtual machine.
- There are 6 CPUs
- There is 20GB of RAM (memory)
- The VM is running Windows Server 2008 R2 as the guest/VM operating system. It is an Exchange 2010 SP1 mail server. There is plenty of available disk space on all the drives. The [Exchange] log files are cleaned out regularly (automated).
I decided to move one of our non-critical servers off this host and on to another host to see if this helped the problem. This took quite some time, as we are not using HA or vmotion, nor do we have VCenter Server...nonetheless, I finally managed to get the non-critical server on to another host (n.b. This was a much smaller machine with less virtual resources assigned to it).
After moving the non-critical server off this host, we decided to monitor the Host and see if the issue resolved itself.
I checked the host about 6-10 times a day, from first thing in the morning till last thing at night - monitoring the performance of not only the Virtual Machine, but the ESXi host also.
There were no adverse performance issues. The only thing I did note, was in the Summary page on the ESX Host, under Storage, was If I right-clicked on the datastore and clicked refresh, then the free disk space would drop (ie from 140GB to 125GB).
After monitoring the host and VM for about 2 weeks, we did NOT have another instance of the above error.
Sorry for the long winded post, but I wanted to give as much detail given this error has been raised before and snapshots are usually blamed as the cause.
My question is this:
If the ESX host had plenty of available disk capacity and there were no snapshots enabled on the VM (or any other VM's on the same host), then why did our Virtual machine crash with the error that 'there is not more space for virtual disk Servername_2.vmdk'?
How do we prevent this issue from happening if we don't know the underlying cause?
I would greatly appreciate any advice or suggestions.
If I have not provided enough info on the specs or environment, please let me know and I will provide more information.
Thanks all,
Kurt

The type of storage is really based on your requirements, and your ability to withstand downtime.
iSCSI as you are using with a NAS such as Synology or QNAP. NAS Selector - Support - Synology - Network Attached Storage (NAS)
I wouldn't use iSCSI for Exchange or any database. It's a bit slow.
Do you have a single physical host? Then I'd probably to an external direct attached storage. This would be a card inserted in your host server that gives you multilane SAS/SATA connectivity (www.techcable.com/SAS-SATA/SAS-SATA.pps) and an external disk enclosure/array.
For multiple hosts to a single array, I recommend a fibre channel connection to a FC capable switch, and on to a FC connected array.
We used to use a HP P2000 (on old G1), but it's since been retired. Worked pretty well once firmware was upgraded. http://www8.hp.com/us/en/products/disk-storage/product-detail.html?oid=4118559#!tab=features. They can be connected via iSCSI, Fibre Channel or 6GB SAS so they are flexible and reasonably priced.
Recommendations:
     Use RAID 6 with your large disk arrays. With large disks there is a measurable failure rate when rebuilding a failed RAID5 array based on MTBF.
     Use smaller 15K disks in RAID 0+1 for speed on databases/Exchange.
     Use slower 7.2K disks in RAID6 for file storage.
We are a small hospital and we have 3 VMware servers with dual CNA (FC and Ethernet in a single twinax cable) connections to 2 redundant Cisco Nexus 5K switches and then 4 Fibre Channel connections to an EMC VNX 5300. It's extremely fast with about 50 virtual servers, but was quite an investment. One thing we don't have to worry about is down time. If there ever is an equipment failure, we have redundant everything, including power split between two UPSs.
Our VNX has 3 tiers of performance. 3 100GB SSD "Fast Cache" in RAID 1 with hot spare, to keep the most used data ready, but it's not really a tier, however one could be built utilizing the same disks. A second tier is performance tier with a 8 600GB RAID 0+1 and hot spare. The third is a bunch of 7.2K 3TB disks in RAID6. The VNX autotiers, placing data on disks depending on where it's needed. The volumes are sliced and diced automatically in the background to make this happen and we never have to touch it. I used a demo of Solarwinds Storage Manager to monitor performance for a while and the utilization was always low, meaning all data access was fast, througout the day.
D

Unable to create filesystem (mkfs.ext4) on large 2TB GPT virtual disk using Linux VM.

I am unable to create a file system on a large (> 2TB disk) virtual disk for a Linux VM. I can create the disk, attach it to the VM, partition it with "parted", but I cannot run mkfs.ext4. Details below.
Hyper-V 2012 Core (w/ all Windows/Microsoft updates as of 4/19).
CentOS 6.4 VM w/ 4 virtual processors, 4GB RAM, and 3 dynamic drives:
/dev/sda 100GB IDE dynamic vhdx
/dev/sdb 75GB IDE dynamic vhdx
/dev/sdc 10TB SCSI dynamic vhdx
Using parted, created 500GB partition on the 10TB drive (/dev/sdc1).
(parted) select /dev/sdc
Using /dev/sdc
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sdc: 11.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Number Start End Size File system Name Flags
1 1049kB 500GB 500GB production_archive
then run: mkfs.ext4 /dev/sdc1
repeating error on console from mkfs.ext4:
INFO: task mkfs.ext4:2581 blocked for more than 120 seconds
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Runaway error in var/log/messages until my /var system filled up - 25G worth of it:
-rw-------. 1 root root 25085329408 Apr 19 23:15 messages
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Sense Key : No Sense [current]
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Add. Sense: No additional sense information
Apr 19 17:39:28 nfs2 kernel: hv_storvsc vmbus_0_13: cmd 0x93 scsi status 0x2 srb status 0x6
Same problem happens when running "mkfs.ext4 -E lazy_itable_init=1 /dev/sdc1"

Hi,
Thank you for your post.
I am trying to involve someone familiar with this topic to further look at this issue.
Lawrence
TechNet Community Support

The storage where the virtual hard disk is located does not support virtual disk sharing

Hi everyone,
I deployed 2 hyper v vitual machines a while ago, and i did that because I needed to test my current game Project, which is an
online game. However, i've had some problems with my Windows installation then I had to reset the pc by making it a refresh
install. I still have the hyper v virtual disks, but i cannot attach it to a new hyper-v virtual machine. it pops up this message:
"the storage
where the virtual hard disk is located does not support virtual disk sharing". I dont know anything about virtual machines, so I
didnt know I had to make the disk sharable. How can I force to attach the hard disk to a new hyper-v? I dont want to go t
hrough the whole proccess of installing the operating system all over again and updating it....
Any help is greatly appreciated!
Thanks in advance,
Romulo Romero

Hi MrDebugging,
>>
When I Try to add a SCSI Controller, and then I click browse to add a UNC I get this:
C:\Users\Public\Documents\Hyper-V\Virtual hard disks\ClienMachine.vhdx
but I tried placing in different location, and the same problem occurs!
By the way, Im not on a server , I am a domestic user and I am running it on my
Windows 8.1
According to the error message , it seems that it is not a permission issue .
The VM is Gen 1 or Gen2 ?
Generally the error message occurs when you enable "shared vhdx" on standalone/client hyper-v host :
Please try to attach the VHDx file to IDE controller if it is a Gen 1 virtual machine (because only the SCSI controller has the option "virtual hard disk sharing" and Gen 1 VM only can boot from IDE )
All in all , please do not use this feature without CSV or Scale-Out File Server with SMB 3.0 on file-based storage .
If it is not the case , please detail steps what you did .
Best Regards,
Elton Ji
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected] .

Virtual Disk Failover/Multipathing question

In the LDOM 1.1 Admin guide the section on virtual disk multipathing leaves me with one question.
LDOM 1.1
Scenario: T5240 with 2 IO domains. Each IO domain has an HBA attached to shared SAN storage. The storage folks assign you the same 2 luns to both HBA's. Does each LUN have to be a member of it's own mpgroup? Or can all 4 luns belong to the same mpgroup?
Put another way which is correct A or B?
(Assuming the SAN disks are c1t0d1 c1t1d1 refer to the same two LUNS on both IO domains.)
A:
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdisk vdisk0 vol0@primary-vds0 guestldom1
ldm add-vdisk vdisk1 vol1@primary-vds0 guestldom1
B:
ldm add-vdsdev mpgroup=guestdom1root /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1root /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1data1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdsdev mpgroup=guestdom1data1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdisk vdisk0 vol0@primary-vds0 guestldom1
ldm add-vdisk vdisk1 vol1@primary-vds0 guestldom1

Hello,
this is the only forum entry to ldoms and the mpgroup option,
so i hope to get the answer to my problem here.
Here my Config:
PRIMARY IO DOMAIN
VDS
    NAME             VOLUME         OPTIONS          MPGROUP        DEVICE
    primary-vds0     disk3_ld0001                    disk3_ld0001   /dev/dsk/c6t60060480000290102065533030434531d0s2
                     disk2_ld0001                    disk2_ld0001   /dev/dsk/c6t60060480000290102065533030374238d0s2
                     disk1_ld0001                    disk1_ld0001   /dev/dsk/c6t60060480000290102065533030434445d0s2
        CLIENT                      VOLUME
        vdisk2@ld0001               disk3_ld0001
        vdisk1@ld0001               disk2_ld0001
        vdisk0@ld0001               disk1_ld0001
SECONDARY IO DOMAIN
VDS
    NAME             VOLUME         OPTIONS          MPGROUP        DEVICE
    secondary-vds0   disk3_ld0001                    disk3_ld0001   /dev/dsk/c3t60060480000290102065533030434531d0s2
                     disk2_ld0001                    disk2_ld0001   /dev/dsk/c3t60060480000290102065533030374238d0s2
                     disk1_ld0001                    disk1_ld0001   /dev/dsk/c3t60060480000290102065533030434445d0s2
        CLIENT                      VOLUME
        vdisk2@ld0001               disk3_ld0001
        vdisk1@ld0001               disk2_ld0001
        vdisk0@ld0001               disk1_ld0001GUEST DOMAIN
DISK
    NAME             VOLUME                      TOUT DEVICE SERVER         MPGROUP
    vdisk2           disk3_ld0001@secondary-vds0 1    disk@2 secondary      disk3_ld0001
        PORT   MPGROUP VOLUME              MPGROUP SERVER
        0      disk3_ld0001@primary-vds0   primary
        1      disk3_ld0001@secondary-vds0 secondary
DISK
    NAME             VOLUME                      TOUT DEVICE SERVER         MPGROUP
    vdisk1           disk2_ld0001@primary-vds0   1    disk@1 primary        disk2_ld0001
        PORT   MPGROUP VOLUME              MPGROUP SERVER
        0      disk2_ld0001@primary-vds0   primary
        1      disk2_ld0001@secondary-vds0 secondary
DISK
    NAME             VOLUME                      TOUT DEVICE SERVER         MPGROUP
    vdisk0           disk1_ld0001@primary-vds0   1    disk@0 primary        disk1_ld0001
        PORT   MPGROUP VOLUME              MPGROUP SERVER
        0      disk1_ld0001@primary-vds0   primary
        1      disk1_ld0001@secondary-vds0 secondaryThe disks are the same on both IO domains.
My problem is, that i loose the disks if i reboot the primary io domain.
is there something wrong?
Thanks and greets.
Tobias

Can not import Share virtual disk

I'm using ocfs2 filesystem
to creating a virtual shared disk oracle VM Manager -> Resources -> Shared Virtual Disks
Server Pool name: mypool
Group Name:
Virtual Disk Name: sharedisk
Virtual Disk Size: 5000
Description:
Can not selected Share virtual disk files which is null when import.what is error?
thank

Hi,
please clarify your error a little bit more.
a.) Did the create work correctly? Or did you get an error? If yes what error?
b.) Did you have problems attaching the Shared Disk to the VM?
Sebastian

Can Windows Server Backup spread a single backup job across multiple disks if they are not set up as a virtual disk?

This may be a dumb question, but I can't seem to find any definitive information after having done many, many searches. Short question is - can Windows Server Backup spread a single backup job across multiple disks if they are not in a storage
pool or some other RAID/JBOD structure?
Background:
I'm running Server 2012 Essentials with all Windows Updates installed. I have been backing up approx 2.8TB of data (Bare Metal Recovery, C:, S: (shared folders), and system reserved) for the past year+ onto a storage pool made up of two-2TB external
USB drives. Backup is slow (takes approx 1.5 days to complete), but generally works. Not surprisingly I was constantly getting capacity low messages so I decided to increase my backup storage pool by adding a 3TB drive and another spare 750GB drive
for a total of 7.75TB. Instead of having four separate external USB enclosures, I bot a 4-bay enclosure - Startech.com model #S3540BU33E to simplify this (or so I thought!).
The first problem I had was adding the two new drives to the existing storage pool. I think that is because the Startech uses a JMicron USB controller that reports identical uniqueid's for all drives so only one shows up in the GUI interface for creating storage
pools. After doing research on this, I set up a new storage pool and virtual disk using all four drives via Powershell and thought I was good. However, when the backup ran, it failed after filling the first drive, saying there was no remaining capacity. In
reality there were three remaining empty drives and there storage pool reported almost 5TB of avail capacity. I assumed this was due to the identical uniqueid issue so I decided to try a different tactic.
Instead of using a storage pool that combines all four disks into one virtual disk, I just added each of them to Windows Server Backup as individual drives thinking it would manage them collectively. I.e., when a drive filled up during a particular backup,
it would just start using the next drive and so on. Apparently this was a foolish assumption because the backup failed again as soon as the first disk filled up.
So now I don't know if this is still an issue with the identical uniqueid's or if Server Backup actually can't spread a single backup across multiple individual drives that aren't in a pool or other virtual disk implementation. Hence, my original question.
My guess is that it does *not* spread them across individual disks, but I just wanted to get confirmation.
Thanks

Mandy,
Thank you for following up on my question.
Unfortunately the article you referenced doesn't address what I am trying to accomplish.
The article focuses on saving the same backup job to multiple disks and rotating the disks between on and offsite for enhanced protection. However, it still requires that an individual backup job fits on a single disk.
What I am trying to determine is if a single backup job can span across more than one physical disk (during the backup process) without those physical disks being in some type of virtual disk implementation (e.g., storage pool, RAID, etc.).
Thanks,
Gerry

Cluster Quorum Disk failing inside Guest cluster VMs in Hyper-V Cluster using Virtual Disk Sharing Windows Server 2012 R2

Hi, I'm having a problem in a VM Guest cluster using Windows Server 2012 R2 and virtual disk sharing enabled.
It's a SQL 2012 cluster, which has around 10 vhdx disks shared this way. all the VHDX files are inside LUNs on a SAN. These LUNs are presented to all clustered members of the Windows Server 2012 R2 Hyper-V cluster, via Cluster Shared Volumes.
Yesterday happened a very strange problem, both the Quorum Disk and the DTC disks got the information completetly erased. The vhdx disks themselves where there, but the info inside was gone.
The SQL admin had to recreated both disks, but now we don't know if this issue was related to the virtualization platform or another event inside the cluster itself.
Right now I'm seen this errors on one of the VM Guest:
Log Name: System
Source: Microsoft-Windows-FailoverClustering
Date: 3/4/2014 11:54:55 AM
Event ID: 1069
Task Category: Resource Control Manager
Level: Error
Keywords:
User: SYSTEM
Computer: ServerDB02.domain.com
Description:
Cluster resource 'Quorum-HDD' of type 'Physical Disk' in clustered role 'Cluster Group' failed.
Based on the failure policies for the resource and role, the cluster service may try to bring the resource online on this node or move the group to another node of the cluster and then restart it. Check the resource and group state using Failover Cluster
Manager or the Get-ClusterResource Windows PowerShell cmdlet.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
<EventID>1069</EventID>
<Version>1</Version>
<Level>2</Level>
<Task>3</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
<EventRecordID>14140</EventRecordID>
<Correlation />
<Execution ProcessID="1684" ThreadID="2180" />
<Channel>System</Channel>
<Computer>ServerDB02.domain.com</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="ResourceName">Quorum-HDD</Data>
<Data Name="ResourceGroup">Cluster Group</Data>
<Data Name="ResTypeDll">Physical Disk</Data>
</EventData>
</Event>
Log Name: System
Source: Microsoft-Windows-FailoverClustering
Date: 3/4/2014 11:54:55 AM
Event ID: 1558
Task Category: Quorum Manager
Level: Warning
Keywords:
User: SYSTEM
Computer: ServerDB02.domain.com
Description:
The cluster service detected a problem with the witness resource. The witness resource will be failed over to another node within the cluster in an attempt to reestablish access to cluster configuration data.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
<EventID>1558</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>42</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
<EventRecordID>14139</EventRecordID>
<Correlation />
<Execution ProcessID="1684" ThreadID="2180" />
<Channel>System</Channel>
<Computer>ServerDB02.domain.com</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="NodeName">ServerDB02</Data>
</EventData>
</Event>
We don't know if this can happen again, what if this happens on disk with data?! We don't know if this is related to the virtual disk sharing technology or anything related to virtualization, but I'm asking here to find out if it is a possibility.
Any ideas are appreciated.
Thanks.
Eduardo Rojas

Hi,
Please refer to the following link:
http://blogs.technet.com/b/keithmayer/archive/2013/03/21/virtual-machine-guest-clustering-with-windows-server-2012-become-a-virtualization-expert-in-20-days-part-14-of-20.aspx#.Ux172HnxtNA
Best Regards,
Vincent Wu
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Cannot see more than one shared virtual disk at a time

I have multiple virtual disks configured and as I add them to the specific virtual machine im using it modifies the vm.cfg as follows:
disk = ['file:/OVS/running_pool/110_openfiler/System.img,hda,w',
',hdc:cdrom,r',
'file:/OVS/sharedDisk/openfiler-ocs-u01.img,hdd,w!',
'file:/OVS/sharedDisk/openfiler-ocs-u02.img,hde,w!',
'file:/OVS/sharedDisk/openfiler-SAN-test.img,hdf,w!',
when the machine boots up the contents of /dev only contains the shared drive hdd, thus I cannot see hde or hdf.
One thing I tried was to edit the vm.cfg after adding the shared drives to the machine to mimic:
disk = ['file:/OVS/running_pool/110_openfiler/System.img,hda,w',
',hdc:cdrom,r',
'file:/OVS/sharedDisk/openfiler-ocs-u01.img,sda,w!',
'file:/OVS/sharedDisk/openfiler-ocs-u02.img,sdb,w!',
'file:/OVS/sharedDisk/openfiler-SAN-test.img,sdc,w!',
This allows me to see all three drives when I issue fdisk -l
Disk /dev/hda: 105.2 GB, 105226698752 bytes
255 heads, 63 sectors/track, 12793 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 12539 100615095 83 Linux
/dev/hda3 12540 12793 2040255 82 Linux swap / Solaris
Disk /dev/sda: 20.9 GB, 20971520512 bytes
255 heads, 63 sectors/track, 2549 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 2550 20480000 ee EFI GPT
Disk /dev/sdb: 20.9 GB, 20972569088 bytes
255 heads, 63 sectors/track, 2549 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 2550 20481024 ee EFI GPT
Disk /dev/sdc: 104.8 GB, 104857600512 bytes
255 heads, 63 sectors/track, 12748 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 12749 102400000 ee EFI GPT
but then my question becomes... could this cause any potential problems?

I found that there are 4 IDE disks and 7 SCSI disks at most for HVM guest on Oracle VM 2.1 version. For IDE disks, The available disknames are from hda to hdd; and for SCSI disks, are from sda to sdg. you may make test about it. :)
Message was edited by:
Changhai

Creating Protection Group Fails with Error:360 The operation failed due to a virtual disk service error

Hello
I'm setting up a DPM server (2012 R2) at a remote site; everything goes well with no issues until a protection group is created, at which point I get the following error;
Create protection group: Protection Group 1 failed:
Error 360: The operation failed due to a virtual disk service error
Error details: The system cannot find the file specified
Recommended action: Retry the operation.
The environment is as follows;
- Virtual Machine Running Server 2008 R2 Fully updated
- Storage Pool is an iSCSI connection Thick Provisioned 1TB GPT and shows in Disk Management with no issues.
- Have connected to Session 0 (console)
- Error log shows The provider did not receive a Plug and Play service notification for the volume. volume=10 for the VDS Dynamic Provider
Can Anyone Help?
Thanks
.Adam Langdon

Hi,
Disk defrag is initiated when a volume shrink is attempted. See if there is any problem defragging a volume and correct any problems doing that.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT]
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VM 3.2.3 Problem attaching virtual disks

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