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Bug 2188182

Summary: [RHEL 9]feature_notify_inode_expire_only
Product: Red Hat Enterprise Linux 9 Reporter: Ju Ke <jke>
Component: fuse3Assignee: Pavel Reichl <preichl>
Status: CLOSED ERRATA QA Contact: Boyang Xue <bxue>
Severity: medium Docs Contact: Michal Stubna <mstubna>
Priority: medium    
Version: 9.2CC: gfialova, hartsjc, miklos, mstubna, mszeredi, preichl, xzhou
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: ---Flags: preichl: needinfo-
pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: fuse3-3.10.2-6.el9 Doc Type: Enhancement
Doc Text:
.`fuse3` now allows invalidating a directory entry without triggering `umount` With this update, a new mechanism has been added to `fuse3` package, that allows invalidating a directory entry without automatically triggering the `umount` of any mounts that exists on the entry.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2023-11-07 08:56:05 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2188181    
Bug Blocks:    

Description Ju Ke 2023-04-20 02:57:18 UTC 
As per Pavel Reichl's request, clone bug 2171095 for RHEL 9.

1. Proposed title of this feature request
   Allow multiple KVM/libvirt guests to have a vTPM backed by the hosts TPM

2. Who is the customer behind the request?
   Account: Jump Trading 602959
   TAM customer: yes
   CSM customer: no
   Strategic: yes

3. What is the nature and description of the request?
   This new function allows dentries to be marked as only expired, instead of always be invalidated.

4. Why does the customer need this? (List the business requirements here)

   Customer has HPC grid that uses fuse and relies heavily on dentry cache for effeciency. They have worked upstream with CERN to get fixes in kernel and fuse, and are now wanting them added to RHEL 9 which they use for the HPC grid.

5. How would the customer like to achieve this? (List the functional requirements here)
   Backport the functionality to RHEL (or rebase if Red Hat prefers).

6. For each functional requirement listed, specify how Red Hat and the customer can test to confirm the requirement is successfully implemented.
   Believe test case provided in RHEL 9 BUG 2188181.

7. Is there already an existing RFE upstream or in Red Hat Bugzilla?
   Existing RFE no.

8. Does the customer have any specific timeline dependencies and which release would they like to target (i.e. RHEL5, RHEL6)?
   RHEL 9

9. Is the sales team involved in this request and do they have any additional input?
   No, but can be.

10. List any affected packages or components.
    fuse3-libs
    kernel via RHEL 9 BUG 2188181

11. Would the customer be able to assist in testing this functionality if implemented?
    Probably not needed, but yes.
Comment 2 Boyang Xue 2023-04-20 03:17:15 UTC 
As the comment( https://bugzilla.redhat.com/show_bug.cgi?id=2109496#c14 ), the original reproducer (and the derivative test case /kernel/filesystems/fuse/Regression/2080000-cache-symlink-truncate-value) can't test this bug, so I'm going to verify this BZ by running fuse regression tests against the fixed version.
Comment 11 Boyang Xue 2023-08-12 12:53:27 UTC 
TEST PASS.

No regression was found in the regression test against kernel-5.14.0-352.el9

Link to Beaker jobs:
fuse3-3.10.2-5.el9
https://url.corp.redhat.com/5796e70
fuse3-3.10.2-6.el9
https://url.corp.redhat.com/51384e6
Comment 14 Boyang Xue 2023-08-12 13:13:03 UTC 
(In reply to Boyang Xue from comment #11)
> TEST PASS.
> 
> No regression was found in the regression test against kernel-5.14.0-352.el9

Sorry. This should be
No regression was found in the regression test against fuse3-3.10.2-6.el9

> 
> Link to Beaker jobs:
> fuse3-3.10.2-5.el9
> https://url.corp.redhat.com/5796e70
> fuse3-3.10.2-6.el9
> https://url.corp.redhat.com/51384e6

Moving to VERIFIED.
Comment 21 errata-xmlrpc 2023-11-07 08:56:05 UTC 
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 (fuse3 bug fix and enhancement 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/RHBA-2023:6696