SC3.1, Sol10, SE6920 storage - global disk I/O query

Hi, if there is anybody that could throw some light on this problem it is much appreciated !
We have a cluster which I believe is not behaving as expected when dealing with disk I/O to the global storage (or my understanding of this is incorrect).
In our certified 3 node (E2900) cluster with fiber attached 6920 storage (dual FC paths with MPXIO), we do not use SVM for global disk redundancy because there is hardware RAID. We are NOT using device groups nor metasets.
In previous clusters we have always used SVM metasets as device groups to control the node ownership for the disks and I/O for a node not owning the disks was accessed via the interconnects.
However, in this case I thought that all 3 nodes should have direct I/O to the global storage - is this correct?
We have seen that write activity from all the nodes is only going through 1 node - how can this be? - how can we identify the node which has ownership for the global storage?
thanks for you time,
Trevor

hi, not sure if this is exactly what you are looking for... the luns from se6920 are viewed as:
1 sdp-1:/dev/rdsk/c0t0d0 /dev/did/rdsk/d1
2 sdp-1:/dev/rdsk/c1t0d0 /dev/did/rdsk/d2
3 sdp-1:/dev/rdsk/c1t1d0 /dev/did/rdsk/d3
4 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003714d0 /dev/did/rdsk/d4
5 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003362d0 /dev/did/rdsk/d5
6 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000335Fd0 /dev/did/rdsk/d6
7 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000335Cd0 /dev/did/rdsk/d7
8 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003359d0 /dev/did/rdsk/d8
9 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003356d0 /dev/did/rdsk/d9
10 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003353d0 /dev/did/rdsk/d10
11 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000370Bd0 /dev/did/rdsk/d11
12 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003707d0 /dev/did/rdsk/d12
13 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003703d0 /dev/did/rdsk/d13
14 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000370Fd0 /dev/did/rdsk/d14
15 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003350d0 /dev/did/rdsk/d15
16 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000334Dd0 /dev/did/rdsk/d16
17 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000334Ad0 /dev/did/rdsk/d17
18 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003347d0 /dev/did/rdsk/d18
19 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003344d0 /dev/did/rdsk/d19
20 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003341d0 /dev/did/rdsk/d20
21 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000333Ed0 /dev/did/rdsk/d21
22 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000333Bd0 /dev/did/rdsk/d22
23 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003338d0 /dev/did/rdsk/d23
24 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003335d0 /dev/did/rdsk/d24
25 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003332d0 /dev/did/rdsk/d25
26 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000332Fd0 /dev/did/rdsk/d26
27 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000332Cd0 /dev/did/rdsk/d27
28 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003329d0 /dev/did/rdsk/d28
29 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003326d0 /dev/did/rdsk/d29
30 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003323d0 /dev/did/rdsk/d30
31 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003320d0 /dev/did/rdsk/d31
32 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000331Dd0 /dev/did/rdsk/d32
33 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000331Ad0 /dev/did/rdsk/d33
34 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003317d0 /dev/did/rdsk/d34
35 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003314d0 /dev/did/rdsk/d35
36 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003311d0 /dev/did/rdsk/d36
37 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000330Ed0 /dev/did/rdsk/d37
38 sdp-1:/dev/rdsk/c5t600015D00005AE00000000000000330Bd0 /dev/did/rdsk/d38
39 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003308d0 /dev/did/rdsk/d39
40 sdp-1:/dev/rdsk/c5t600015D00005AE000000000000003305d0 /dev/did/rdsk/d40
but the mounted filesystems are:
/dev/global/dsk/d5s6 /dev/global/rdsk/d5s6 /global/sdp ufs 2 yes global,logging
when i write to the above filesystem from all 3 nodes, iostat only reports write activity from 1 of the nodes.

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제품 : ORACLE SERVER
작성날짜 : 2004-04-19
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PS C:\Users\Administrator> Get-PhysicalDisk | ? OperationalStatus -ne OK | fl
ObjectId                         : {1}\\ZEUS\root/Microsoft/Windows/Storage/Providers_v2\SPACES_PhysicalDisk.ObjectId="
                                   {ed8bbb6f-d7b2-11e3-80b5-806e6f6e6963}:PD:{189a158c-fd27-11e3-80c9-806e6f6e6963}"
PassThroughClass                 :
PassThroughIds                   :
PassThroughNamespace             :
PassThroughServer                :
UniqueId                         :
AllocatedSize                    : 239712862208
BusType                          : Unknown
CannotPoolReason                 : In a Pool
CanPool                          : False
Description                      :
DeviceId                         :
EnclosureNumber                  :
FirmwareVersion                  :
FriendlyName                     : PhysicalDisk-1
HealthStatus                     : Warning
IsIndicationEnabled              :
IsPartial                        : False
LogicalSectorSize                : 0
Manufacturer                     :
MediaType                        : UnSpecified
Model                            :
OperationalStatus                : Lost Communication
OtherCannotPoolReasonDescription :
PartNumber                       :
PhysicalLocation                 :
PhysicalSectorSize               : 0
SerialNumber                     :
Size                             : 499289948160
SlotNumber                       :
SoftwareVersion                  :
SpindleSpeed                     : 0
SupportedUsages                  : {Auto-Select, Manual-Select, Hot Spare, Retired...}
Usage                            : Retired
PSComputerName                   :
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Size
                    me
Array               Parity              Degraded            Warning
True                            12.4 TB
PS C:\Users\Administrator> get-physicaldisk
FriendlyName        CanPool             OperationalStatus   HealthStatus        Usage
Size
PhysicalDisk2       False               OK                  Healthy
Auto-Select                     2.73 TB
PhysicalDisk6       False               OK                  Healthy
Auto-Select                   930.25 GB
PhysicalDisk20      False               OK                  Healthy
Auto-Select                      464 GB
PhysicalDisk21      False               OK                  Healthy
Auto-Select                      464 GB
PhysicalDisk-1      False               Lost Communication Warning             Retired
465 GB
PhysicalDisk1       False               OK                  Healthy
Auto-Select                     2.73 TB
PhysicalDisk17      False               OK                  Healthy
Auto-Select                   929.75 GB
PhysicalDisk19      False               OK                  Healthy
Auto-Select                   929.75 GB
PhysicalDisk7       False               OK                  Healthy
Auto-Select                   930.25 GB
PhysicalDisk18      False               OK                  Healthy
Auto-Select                   929.75 GB
PhysicalDisk22      False               OK                  Healthy
Auto-Select                   147.25 GB
PhysicalDisk0       False               OK                  Healthy
Auto-Select                     1.82 TB
PhysicalDisk3       False               OK                  Healthy
Auto-Select                     1.82 TB
PhysicalDisk23      False               OK                  Healthy
Auto-Select                   232.25 GB
PhysicalDisk5       False               OK                  Healthy
Auto-Select                   929.75 GB
PhysicalDisk8       False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk9       False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk10      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk11      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk12      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk13      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk14      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk15      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk16      False               OK                  Healthy
Auto-Select                   277.75 GB
PhysicalDisk24      False               OK                  Healthy
Auto-Select                   232.25 GB
PhysicalDisk4       False               OK                  Healthy
Auto-Select                   136.12 GB
My current virtual disk is 12.4 TB, and I have 4.76TB free in the Storage Space.
Any ideas on how I can remedy this?
Thanks

Hi,
What kind of virtual disk are you currently using, simple, mirror or parity?
If it is simple virtual disk you may not able to repair it as it provide no redundance.
If it is parity or mirror, you need to add a new hard disk for replacing the failed disk before the virtual disk back to work.
However please run following cmdlet first:
get-virtualdisk -friendlyname <name> |FC
Check the NumberOfColumns property.
If it is not 1, you need to add more hard disks to get it back to work. See the last QA in this FAQ thread:
[Forum FAQ] Frequently Asked Questions for Storage Pool issues
http://social.technet.microsoft.com/Forums/windowsserver/en-US/77d34855-cbe6-4ea7-b3cf-567a03580049/forum-faq-frequently-asked-questions-for-storage-pool-issues?forum=winserverfiles
If you have any feedback on our support, please send to [email protected]

Storage Spaces disk removal of damaged HDD failing

Hi, and thanks in advance for any help!
The general situation: I have a Windows 8.1 Pro machine acting as a home server. The storage spaces volume (singular) consists of a 4-disk array with 2TB drives in Parity mode. It's usage is 70ish% but honestly, maybe 50GB is important to
recover, the rest are ISO's which I have the physical disks to so no big deal if I lose those. The volume is in a bad place and I need to either get it functional again or get the data off of it and start with a fresh volume.
What seems to be wrong: One of the drives has failed. When the drive is attached the volume (D:) appears to mount but explorer hangs/crashes when attempting to access D:\. Storage spaces hangs/crashes as soon as you click "Change Settings".
Task Manager registers 100% I/O usage of the volume at those times. Taking the drive to another machine and running CrystalDiskInfo indicates a few fatal failures. Removal of the drive returns the system to a functional state but D:\ goes away.
Attempts to fix the issue so far: With the drive attached the storage pool will say 'repairing' and sit at 0% for at least 3 hours (at which point I gave up). All further attempts I've made have been w
ith the bad drive physically removed. Removal of the drive via the GUI shows this error
Can't Remove Drive from the pool
Details: Drive could not be removed because not all data could be reallocated. Add an additional drive to this pool and reattempt this operation
At first I thought, simple: buy another 2TB drive and rinse-repeat. Did that, same error. This morning I went a step further thinking that maybe the 2TB drive was too small, fine- bought a 4TB drive, added that, same error output. Ok, since I have that 2TB
drive sitting on my desk, throw that in too, maybe having both the replacement 2TB drive and additional 4TB drive in the pool is good? no dice, same error.
I work as a systems guy for Linux so command line doesn't scare me, I'm not familiar with PowerShell specifics but I did some reading and tried everything that made sense (after a lot of googling and get-help <command> -full). I can't seem to remove
the drive from the pool and without it the volume wont mount. A general summary of the situation is below:
PS C:\WINDOWS\system32> Get-StoragePool
FriendlyName OperationalStatus HealthStatus IsPrimordial IsReadOnly
Primordial OK Healthy True False
Storage pool Degraded Warning False False
PS C:\WINDOWS\system32> Get-VirtualDisk
FriendlyName ResiliencySettingNa OperationalStatus HealthStatus IsManualAttach Size
me
SafeStorage Parity Detached Unhealthy False 4.8 TB
PS C:\WINDOWS\system32> Get-PhysicalDisk
FriendlyName CanPool OperationalStatus HealthStatus Usage Size
ST4000DM000-1F21... False OK Healthy Auto-Select 3.64 TB
ST2000DM001-1CH1... False OK Healthy Auto-Select 1.82 TB
ST2000DM001-1CH1... False OK Healthy Auto-Select 1.82 TB
ST2000DM001-1CH1... False OK Healthy Auto-Select 1.82 TB
PhysicalDisk3 False OK Healthy Auto-Select 117.38 GB
BADBADBAD False Lost Communication Warning Retired 1.82 TB
ST ST2000DM001-1... False OK Healthy Auto-Select 1.82 TB
PS C:\WINDOWS\system32> $bd = Get-PhysicalDisk -Friendlyname "BADBADBAD"
PS C:\WINDOWS\system32> echo $bd
FriendlyName CanPool OperationalStatus HealthStatus Usage Size
BADBADBAD False Lost Communication Warning Retired 1.82 TB
PS C:\WINDOWS\system32> Remove-PhysicalDisk -PhysicalDisks $bd -StoragePoolFriendlyName "Storage pool"
Confirm
Are you sure you want to perform this action?
Removing a physical disk will cause problems with the fault tolerance capabilities of the following storage pool:
"Storage pool".
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"):
Remove-PhysicalDisk : One of the physical disks specified could not be removed because it is still in use.
At line:1 char:1
+ Remove-PhysicalDisk -PhysicalDisks $bd -StoragePoolFriendlyName "Storage pool"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (StorageWMI:ROOT/Microsoft/..._StorageCmdlets) [Remove-PhysicalDisk], CimE
xception
+ FullyQualifiedErrorId : StorageWMI 51004,Remove-PhysicalDisk
PS C:\WINDOWS\system32>
Any ideas? Again, all I really need is about 50GB of data off this array so if even there is a way to temporarily mount the volume, pull the data, and start of I'm game. Thanks again for your help!

Hi,
How did you remove that disk and return the disk?
Please follow this article to operate for test:
Storage Spaces in Windows 8 and 8.1
https://www.winhelp.us/storage-spaces-in-windows-8.html
Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
In addition, verify the account to upload the picture or upload the picture to the OneDrive and share the link.
Karen Hu
TechNet Community Support

SC3.1, Sol10, SE6920 storage - global disk I/O query

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