Description of problem: Customer has detected a new issue and is not able to find a workaround, probably related with kernel o new nfs version. From pod drupal, some nfs directories are not able to be listed from OCP app nodes after the upgrade Version-Release number of selected component (if applicable): Red Hat OpenShift Container Platform (OCP) 4.7.24 Kernel-4.18.0-305.10.2.el8_4.x86_64 nfs-utils-2.3.3-41.el8.x86_64 OCP UPI-VMWare How reproducible: Not able to reproduce the issue, probably related to the upgrade Actual results: Application is not able to be executes as can't list the files in nfs directories Expected results: Application to finish without issue Additional info:
It appears the root cause of this issue is tracked in https://bugzilla.redhat.com/show_bug.cgi?id=1982825 The 8.4.z version of that BZ is https://bugzilla.redhat.com/show_bug.cgi?id=1993895, which notes that it is fixed in `kernel-4.18.0-305.16.1.el8_4`. Since RHCOS 4.7+ is using RHEL 8.4, the following RHCOS builds included a version of the kernel with that fix: - 48.84.202109082138-0 (OCP 4.8.11) - 47.84.202109082139-0 (OCP 4.7.30) This BZ should have clones to track the inclusion of the fixed kernel in the different OCP releases, but since the releases have already been made and errata issued, it seems excessive. --- The current version of OCP under development is 4.10 and since the devel builds already include a newer version of the kernel with the fix for this issue, I am going to move this BZ to MODIFIED.
Verified on RHCOS 410.84.202110081440-0 which is part of registry.ci.openshift.org/ocp/release:4.10.0-0.nightly-2021-10-10-083341. It is running a kernel version newer than kernel-4.18.0-305.16.1.el8_4 [core@localhost ~]$ rpm -q kernel kernel-4.18.0-305.19.1.el8_4.x86_64 [core@localhost ~]$ rpm-ostree status State: idle Deployments: ● ostree://67be3786510771cc550aa4be162f2b45cb796e4340755d7a67fa4720aa10e9ba Version: 410.84.202110081440-0 (2021-10-08T14:43:28Z)
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.10.3 security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2022:0056