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Questions tagged [cluster-shared-volumes]

Cluster Shared Volumes (CSV) is a feature in Windows Server in which shared disks are concurrently accessible to all nodes within a failover cluster. The feature was first introduced in Windows Server 2008 R2 as a way to simplify storage with clustered Hyper-V virtual machines (VMs).

Cluster Shared Volumes (CSV) is a feature in Windows Server in which shared disks are concurrently accessible to all nodes within a failover cluster. The feature was first introduced in Windows Server 2008 R2 as a way to simplify storage with clustered Hyper-V virtual machines (VMs).

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Force disk cache even if guest uses direct i/o

Have IBM db2 on Rhel on Hyper-V on Windows Server. The *.vhdx file is on CSV. e.g. C:\ClusterStorage\volume1\hyper-v\oktest-lb1\oktest-lb1.vhdx. db2 uses O_DIRECT flag (uncached i/o) for its database files, and a small block size 8k or less for…
basin
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Accessing a storage-side snapshot of a cluster-shared volume

From time to time I am in the situation where I need to get data back from storage-side snapshots of cluster shared volumes. I suppose I just never figured out a way to do it right, so I always needed to: expose the shadow copy as a separate…
the-wabbit
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Hyper-V cluster-joined host chooses wrong NIC to send SMB traffic

I have the following scenario: Four Hyper-V host servers running Windows Server 2019, joined in a Hyper-V Failover Cluster. Each server has the same network config - a Management network (Cluster and Client communication configured), and a couple of…
Goran
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How To Share Volume With Code Files Between Two Containers In A Single Pod?

I created a GKE cluster and inside it I created single pod with 2 conatiners with this yaml settings. apiVersion: v1 kind: Pod metadata: name: django-nginx spec: restartPolicy: Never volumes: - name: universal emptyDir: {} …
Sollosa
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Windows server 2012 failover cluster replace shared disk

We have cluster of 2 nodes (Windows Server 2012) with file server role. There is resource group configured under cluster which have multiple shared disks. As one of the disk is having file system error we want to replace it with a new disk (LUN…
Amit G
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Can a Failover Cluster CSV volume be owned by two clusters during the upgrade process?

We have a 2-node Hyper-V failover cluster running Windows Server 2012 (R1) with about 60 virtual machines running; upgrading to Windows Server 2016 RTM. Since we aren't on 2012R2, we can't use the new rolling cluster upgrade process. So, during…
Brett A.
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3 node cluster with crossover cables

We have a windows failover cluster running Windows 2012 R2 for Hyper-V. Our storage is using Storage Spaces with a SAS3 JBOD. As such, we see IO transfers hitting 2800 MBps. Our networking is still on Gigabit LACP links, severly limiting speeds…
Mitch
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RedHat Cluster 6 node won't see shared volume group

I try to create a shared clvm volume group shared between 2 nodes of a Red Hat Cluster 6. Here is the procedure I followed: [root@node1 ~]# pvcreate /dev/mapper/mpathab [root@node1 ~]# vgcreate -c y data1_vg /dev/mapper/mpathab [root@node1 ~]#…
JavaRed
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Is Hyper-V CSVFS supported on Linux VMs

We have a Hyper-V guest failover cluster with a few Windows VMs that are using Cluster Share Volume (CSV). Is it possible to use the same CSV for Linux VMs? Is CSVFS supported on Linux VMs at all ?
khorvat
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SAN Storage Array in Hyper-V 2012R2 Failover Cluster - outdated file table info?

We have Dell MD3600f SAN storage array and two HP servers for VM failover clustering solution. MD3600f is set, disks are mapped and connected to Hyper-V servers. On Hyper-V's I have partitioned and formatted these disks (NTFS) and assigned drive…
user2838376
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Cluster Shared Volumes offlining under excessive use

I am trying to understand (and ideally fix) a particularly annoying phenomenon I've noticed with Failover Clustering and Cluster Shared Volumes in conjunction with Hyper-V. It appears that under high load, when the CSV backend storage is responding…
the-wabbit
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Immoveable VHDX files on Shared Cluster Volume

Some time back I created 2x VHDX files to attach later to Virtual Machines. When I tried to add the disks today, I got an error stating the files are in use by another process. I also cannot delete the files. Not from a remote session nor directly…
Jacobus Burger
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What is the bottleneck of my HP MSA? Is it intended for a CSV at all?

I am an apprentice at a company in Switzerland. We have a testing / learning environment for us, which consists of multiple physical servers. There are two physical Microsoft Hyper-V servers that are in one Failover Cluster, connected via iSCSI to a…
duckbjarne
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How to enable read permission on Kubernetes mount path

I have installed FluentD on Kind-Kubernetes cluster on CentOS VM running on my laptop. I'm having issues getting FluentD to read logs as it is throwing the following error. 2021-08-29 08:26:31 +0000 [warn]: #0 [tail_container_logs]…
Jason Nanay
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Failed to map guest I/O buffer for write access with status 0xC0000044 Hyper-V-StorageVSP Event ID 8

Full Error information: Error 8/9/2021 10:35:11 AM Hyper-V-StorageVSP 8 None Failed to map guest I/O buffer for write access with status 0xC0000044. Device name = d:\vms\servername\virtual hard disks\servername.vhdx This error is switching…
Eric Nord
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