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  1. OpenShift Bugs
  2. OCPBUGS-55978

RHCOS 419.96.202503120351-0 can't mount vSphere shared volumes and nfs volumes which server do not set NFS4ERR_ATTRNOTSUPP

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    • Bug Fix
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      * Previously, you needed to update vSAN files to 8.0 P05 or later to enable clusters running {product-title} 4.19 to mount the network file system (NFS) volumes that were exported from the VMWare vSAN Files. With this release, you do not need to upgrade existing vSAN File Services versions to mount VMWare vSAN File volumes. (link:https://issues.redhat.com/browse/OCPBUGS-55978[OCPBUGS-55978])
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      * Previously, you needed to update vSAN files to 8.0 P05 or later to enable clusters running {product-title} 4.19 to mount the network file system (NFS) volumes that were exported from the VMWare vSAN Files. With this release, you do not need to upgrade existing vSAN File Services versions to mount VMWare vSAN File volumes. (link: https://issues.redhat.com/browse/OCPBUGS-55978 [ OCPBUGS-55978 ])
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      Description of problem:

      Recent RHCOS / RHEL 9.6 cannot mount vSphere NFS volumes.

      $ mount -t nfs4 -o hard,sec=sys,vers=4,minorversion=1 vsanfs1.devqe.ibmc.devcluster.openshift.com:/vsanfs/52cd353e-1c9c-1222-8e93-a8d5a6906f97 /mnt/test

mount.nfs4: mount system call failed  

      Version-Release number of selected component (if applicable):

      OpenShift 4.19.0-0.nightly-2025-03-12-235235
PRETTY_NAME="Red Hat Enterprise Linux CoreOS 419.96.202503120351-0"
Linux Kernel 5.14.0-570.3.1.el9_6.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Mar 7 10:23:19 EST 2025 x86_64 x86_64 x86_64 GNU/Linux    

      How reproducible:

      Always

      Additional info:

      • Full dmesg with nfs client logs will follow, I can see some errors in 
      [17557.787608] decode_server_caps: xdr returned 10036!
...
[17557.787642] nfs4_map_errors could not handle NFSv4 error 10036
      • RHCOS 4.18 / RHEL 9.4 with the same NFS share worked
      • The NFS server is VMware shared volume, who knows what it really is.

      os-release:

       NAME="Red Hat Enterprise Linux CoreOS"
ID="rhcos"
ID_LIKE="rhel fedora"
VERSION="419.96.202503120351-0"
VERSION_ID="4.19"
VARIANT="CoreOS"
VARIANT_ID=coreos
PLATFORM_ID="platform:el9"
PRETTY_NAME="Red Hat Enterprise Linux CoreOS 419.96.202503120351-0"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:9::baseos::coreos"
HOME_URL="https://www.redhat.com/"
DOCUMENTATION_URL="https://docs.okd.io/latest/welcome/index.html"
BUG_REPORT_URL="https://access.redhat.com/labs/rhir/"
REDHAT_BUGZILLA_PRODUCT="OpenShift Container Platform"
REDHAT_BUGZILLA_PRODUCT_VERSION="4.19"
REDHAT_SUPPORT_PRODUCT="OpenShift Container Platform"
REDHAT_SUPPORT_PRODUCT_VERSION="4.19"
OPENSHIFT_VERSION="4.19"
RHEL_VERSION=9.6
OSTREE_VERSION="419.96.202503120351-0"

              Unassigned Unassigned
              rhn-support-pewang Penghao Wang
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              Michael Nguyen Michael Nguyen
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                Created:
                Updated:
                Resolved: