View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001597 | channel: elrepo/el10 | --elrepo--request-for-enhancement-- | public | 2026-06-24 11:04 | 2026-10-21 02:10 |
| Reporter | Nux | Assigned To | tqhoang | ||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | assigned | Resolution | open | ||
| Summary | 0001597: OCFS2 support in EL9/10 kernel-ml/lt | ||||
| Description | Hello, Is it possible to enable support for OCFS2 in your kernels, please? Much needed for shared block storage, big demand now from VMWare "refugees" migrating onto EL/KVM and needing to reuse their block storage (FC, DAS, ISCSI, NVMEoTCP etc). ocfs2-tools also required for proper functionality, but that can be "backported" or simply copied from Oracle Linux since afaik OCFS2 is mainly their baby. | ||||
| Tags | kernel-lt, kernel-ml | ||||
|
|
We will enable CONFIG_OCFS2_FS in the next update to our kernels. |
|
|
Thanks! |
|
|
@tqhoang Could you take a look at this and see if a kmod can be built? |
|
|
Yes, this looks like it can be done along with the ocfs2-tools. |
|
|
@Nux As we talked anout in #elrepo, our kmods are signed with our SB-key. So if your systems are SB-enabled, using a kmod would be the only option for you. |
|
|
@Nux For a kmod for stock RHEL kernels, can you take a look at the Kconfig file for OCFS2 and let me know if you need "OCFS2 Userspace Clustering" (OCFS2_FS_USERSPACE_CLUSTER)? It's the only option that requires additional modules...namely DLM. Reason I ask is because DLM is being a little difficult to build out-of-tree. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/fs/ocfs2/Kconfig?h=linux-6.12.y |
|
|
@tqhoang Thanks for picking this up. If OCFS2_FS_USERSPACE_CLUSTER is too complicated we can leave it out, afaik it's only needed if you want to offload cluster management to the likes of corosync/pacemaker. /fingerscrossed |
|
|
@Nux I have the following ocfs2 packages uploading to our testing repo. For EL 10.2 (based on kernel 6.12.94) kmod-ocfs2-0.0-1.el10_2.elrepo.x86_64.rpm kmod-ocfs2-0.0-1.el10_2.elrepo.src.rpm For EL 9.8 (based on kernel 6.6.143) kmod-ocfs2-0.0-1.el9_8.elrepo.x86_64.rpm kmod-ocfs2-0.0-1.el9_8.elrepo.src.rpm For now, you will need to install the ocfs2-tools from Oracle. Please let us know if these are working. |
|
|
OCFS2_FS is now enabled in kernel-ml-7.1.2-1 (el8|el9|el10). |
|
|
Thank you so much, I'll test ASAP. |
|
|
Thanks all, I tested the kmods on Alma9 and it worked fine with the binaries from Oracle Linux! I also tried the kernel-ml, but it looks like the module is missing, or perhaps there's some sort of conflict with the kmods? ~]# uname -sr Linux 7.1.2-1.el9.elrepo.x86_64 ~]# modprobe ocfs2 modprobe: FATAL: Module ocfs2 not found in directory /lib/modules/7.1.2-1.el9.elrepo.x86_64 |
|
|
Completion, when I meant "binaries" above, I meant the ocfs2-tools from OL9, of course. Another one, the directory for ocfs2 seems present, but no actual files in it, there are some dirs, but all emtpy: ~]# ls -al /lib/modules/7.1.2-1.el9.elrepo.x86_64/kernel/fs/ocfs2/ total 4 drwxr-xr-x. 5 root root 45 Jul 3 22:26 . drwxr-xr-x. 39 root root 4096 Jul 3 22:26 .. drwxr-xr-x. 2 root root 6 Jun 27 17:58 cluster drwxr-xr-x. 2 root root 6 Jun 27 17:58 dlm drwxr-xr-x. 2 root root 6 Jun 27 17:58 dlmfs |
|
|
Turns out ocfs2-related modules are in the kernel-ml-modules-extra package. $ rpm -qpl kernel-ml-modules-extra-7.1.2-1.el9.elrepo.aarch64.rpm | grep -i ocfs /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/cluster/ocfs2_nodemanager.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/dlm/ocfs2_dlm.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/dlmfs/ocfs2_dlmfs.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/ocfs2.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/ocfs2_stack_o2cb.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/ocfs2_stack_user.ko.xz /lib/modules/7.1.2-1.el9.elrepo.aarch64/kernel/fs/ocfs2/ocfs2_stackglue.ko.xz |
|
|
Facepalm.. Didn't even know that existed. #GettingOld Thanks! |
|
|
It seems to be working, so from superficial testing both kmod and kernel-ml are working, top job, folks! Thank you. |
|
|
Let's not talk about our age. ;-) |
|
|
@Nux - We don't get older...just wiser. ;) Thanks for testing the kmod on EL9. Were you able to test the kmod for El10? BTW there was an upstream patch titled "ocfs2: reject oversized group bitmap descriptors". I'm going to hold off updating our kmods in case there are more patches in-queue. |
|
|
Not as yet, but should do this coming week. |
|
|
I'm gonna have to take a rain cheque with the testing on EL10 as life has suddenly got busier, but should be able to confirm in September at the latest. |
|
|
No problem. I'll keep the kmods in testing until you have time to revisit. |
|
|
@Nux - Will you have a chance to test the kmod-ocfs2 for EL10? Also there have been a considerable number of patches to the ocfs2 filesystem in the upstream kernels since June. I'd like to just confirm we have a working baseline before adding in more patches. |
|
|
@tqhoang Very much of interest, but lagging behind with testing. I'll do my best to do more testing in November. Thanks for tracking this. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2026-06-24 11:04 | Nux | New Issue | |
| 2026-06-24 11:04 | Nux | Status | new => assigned |
| 2026-06-24 11:04 | Nux | Assigned To | => toracat |
| 2026-06-24 11:04 | Nux | Tag Attached: kernel-lt | |
| 2026-06-24 11:05 | Nux | Tag Attached: kernel-ml | |
| 2026-06-24 11:08 | toracat | Note Added: 0010884 | |
| 2026-06-24 11:23 | Nux | Note Added: 0010886 | |
| 2026-06-24 12:14 | toracat | Note Added: 0010887 | |
| 2026-06-24 12:36 | tqhoang | Note Added: 0010888 | |
| 2026-06-24 12:45 | toracat | Note Added: 0010889 | |
| 2026-06-24 12:49 | tqhoang | Note Added: 0010890 | |
| 2026-06-24 15:26 | tqhoang | Note Edited: 0010890 | |
| 2026-06-25 07:15 | Nux | Note Added: 0010893 | |
| 2026-06-27 15:05 | tqhoang | Note Added: 0010896 | |
| 2026-06-27 15:10 | tqhoang | Status | assigned => feedback |
| 2026-06-27 17:29 | toracat | Note Added: 0010897 | |
| 2026-06-30 07:04 | Nux | Note Added: 0010899 | |
| 2026-06-30 07:04 | Nux | Status | feedback => assigned |
| 2026-07-03 18:41 | Nux | Note Added: 0010902 | |
| 2026-07-03 18:43 | Nux | Note Added: 0010903 | |
| 2026-07-03 19:56 | toracat | Note Added: 0010904 | |
| 2026-07-04 19:24 | Nux | Note Added: 0010906 | |
| 2026-07-04 19:30 | Nux | Note Added: 0010907 | |
| 2026-07-04 19:34 | toracat | Note Added: 0010908 | |
| 2026-07-05 10:12 | tqhoang | Note Added: 0010909 | |
| 2026-07-05 10:13 | Nux | Note Added: 0010910 | |
| 2026-07-05 10:37 | tqhoang | Note Edited: 0010909 | |
| 2026-07-06 13:21 | toracat | Assigned To | toracat => tqhoang |
| 2026-07-20 10:07 | Nux | Note Added: 0010916 | |
| 2026-07-21 14:28 | tqhoang | Note Added: 0010918 | |
| 2026-09-25 16:34 | tqhoang | Status | assigned => feedback |
| 2026-09-25 16:34 | tqhoang | Note Added: 0010975 | |
| 2026-10-21 02:10 | Nux | Note Added: 0010995 | |
| 2026-10-21 02:10 | Nux | Status | feedback => assigned |
