Bug 1948374

Summary:	[virtio-win][virtio-fs] Hit error when deleting files/folders on shared dir(nfs mount)
Product:	Red Hat Enterprise Linux 9	Reporter:	xiagao
Component:	virtio-win	Assignee:	Yvugenfi <yvugenfi>
virtio-win sub component:	virtio-win-prewhql	QA Contact:	xiagao
Status:	CLOSED CURRENTRELEASE	Docs Contact:
Severity:	high
Priority:	high	CC:	mdean, qizhu, vprutyan, ybendito
Version:	9.0	Keywords:	Triaged
Target Milestone:	rc
Target Release:	9.0
Hardware:	x86_64
OS:	Windows
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1978122 (view as bug list)		Environment:
Last Closed:	2022-08-16 12:23:07 UTC	Type:	---
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:	2018072
Bug Blocks:	1948357, 1978122

Description xiagao 2021-04-12 06:15:35 UTC

Description of problem:
Boot up a Win2019 vm with virtio fs shared dir(nfs backend),try to create/rename/delete file or folders on the file system, hit a couple of errors.

Version-Release number of selected component (if applicable):
qemu-kvm-5.2.0-11.el9.x86_64
kernel-5.11.0-2.el9.x86_64
virtio-win-prewhql-0.1-197

How reproducible:
100%

Steps to Reproduce:
1.mount a nfs dir on host.
(host)mount 10.66.8.151:/home/nfs  /home/nfs_c
(nfs conf) /home/nfs *(rw,sync,no_root_squash)

2.start virtiofs daemon with shared dir on nfs mount dir
# /usr/libexec/virtiofsd --socket-path=/tmp/vhostqemu1 -o source=/home/nfs_c/virtiofs_test/ -d

3.boot up vm with vhost-user-fs-pci device
-chardev socket,id=char0,path=/tmp/vhostqemu1 \
-device vhost-user-fs-pci,chardev=char0,tag=myfs_11,bus=pci.11,queue-size=1024 \
-m 4G \
-object memory-backend-file,id=mem,size=4G,mem-path=/dev/shm,share=on \
-numa node,memdev=mem \

4.install viofs driver,register virtiofs service and start it
C:\> sc create VirtioFsSvc binpath="(your binary location)\virtiofs.exe" start=auto 
depend="WinFsp.Launcher/VirtioFsDrv" DisplayName="Virtio FS Service"

c:\> sc start VirtioFsSv

5.create and rename a file/folder on the shared volume(Z:)

6.delete a file/folder

Actual results:
After step 5,
Failed with "The file xxx is too large for the destination file system."

After step 6, delete succeed, but a ".nfs0000000..." file is created after refresh the windows and can't create a file/folder any more.


Expected results:

Additional info:

Comment 1 xiagao 2021-04-13 06:15:31 UTC

Can reproduce this bug on RHEL8.4.0

kernel-4.18.0-302.el8.x86_64
qemu-kvm-5.2.0-14.module+el8.4.0+10425+ad586fa5.x86_64
seabios-bin-1.14.0-1.module+el8.4.0+8855+a9e237a9.noarch

Comment 2 xiagao 2021-06-23 01:34:39 UTC

Could you set DTM as it was set ITR to 8.5.0?

Thanks.

Comment 3 xiagao 2021-07-14 06:41:29 UTC

Hit error like https://bugzilla.redhat.com/show_bug.cgi?id=1978122#c3.

Comment 4 Gal Hammer 2021-08-03 07:20:23 UTC

Postpone to 8.6 for now as full resolution might requires changes in the virtiofsd as well.

Comment 7 Viktor Prutyanov 2022-01-17 20:55:06 UTC

This PR https://github.com/virtio-win/kvm-guest-drivers-windows/pull/688 should fix the bug.

Comment 9 xiagao 2022-02-17 03:47:51 UTC

Can reproduce with virtio-win-prewhql-0.1-215.
Verify with virtio-win-prewhql-0.1-216.

pkg:
qemu-kvm-6.2.0-7.el9.x86_64
kernel-5.14.0-56.el9.x86_64
RHEL-9.0.0-20220210.0

Comment 10 xiagao 2022-03-25 03:42:34 UTC

(In reply to xiagao from comment #9)
> Can reproduce with virtio-win-prewhql-0.1-215.
> Verify with virtio-win-prewhql-0.1-216.
> 
> pkg:
> qemu-kvm-6.2.0-7.el9.x86_64
> kernel-5.14.0-56.el9.x86_64
> RHEL-9.0.0-20220210.0

Reproduce steps:
In the mounted directory.
1. create a 1k txt file.
2. delete it.
-----> a ".nfs0000000..." file is created after refresh the windows

Verify steps:
1. create a 1k txt fiel and  a 29k file and rename them.
2. delete them and refresh "z:\"
-----> there is no  ".nfs0000000..."