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Bug 1976035 - qemu-img convert failed with "error while writing sector 0: Permission denied" when writing to Windows NFSServer
Summary: qemu-img convert failed with "error while writing sector 0: Permission denied...
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: qemu-kvm
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: beta
: ---
Assignee: Virtualization Maintenance
QA Contact: Tingting Mao
URL:
Whiteboard:
: 1985249 (view as bug list)
Depends On:
Blocks: 1985249
TreeView+ depends on / blocked
 
Reported: 2021-06-25 02:44 UTC by Meiyan Zheng
Modified: 2022-01-20 07:12 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1985249 (view as bug list)
Environment:
Last Closed: 2022-01-19 14:02:29 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 6231411 0 None None None 2021-08-03 04:02:10 UTC

Description Meiyan Zheng 2021-06-25 02:44:32 UTC 
Description of problem:

qemu-img convert will be failed with "qemu-img: error while writing sector 0: Permission denied" when writing to Windows NFSServer. 


Version-Release number of selected component (if applicable):
qemu-img-4.2.0-48.module+el8.4.0+10368+630e803b.x86_64


How reproducible:

Steps to Reproduce:
1. Mount directory exported by NFSServer on Windows Server 2016 Standard
# mount -o rw,sync,vers=3 NFSServer_IP_ADDR:/TEST /mnt/

2.
# qemu-img convert -O raw -f qcow2 /root/cirros-0.5.2-x86_64-disk.img /mnt/test8.img
qemu-img: error while writing sector 0: Permission denied



Actual results:
qemu-img failed with "qemu-img: error while writing sector 0: Permission denied"

Expected results:
qemu-img should work fine without the error


Additional info:
When using RHEL7.9 client, qemu-img convert will completed without error 

  # mount -o rw,sync,vers=3 NFSServer_IP_ADDR:/TEST /mnt/
  # qemu-img convert -O raw -f qcow2 /root/cirros-0.5.2-x86_64-disk.img /mnt/test7.img


When mount with nolock on RHEL8.4 client, qemu-img convert will completed without error 

  # mount -o rw,sync,vers=3,nolock NFSServer_IP_ADDR:/TEST /mnt/
  # qemu-img convert -O raw -f qcow2 /root/cirros-0.5.2-x86_64-disk.img /mnt/test8.img
Comment 33 Klaus Heinrich Kiwi 2021-08-10 18:27:21 UTC 
*** Bug 1985249 has been marked as a duplicate of this bug. ***
Comment 35 Klaus Heinrich Kiwi 2021-08-24 17:48:19 UTC 
With the customer-facing issue worked around, I'll move this to the backlog at low priority.
Comment 36 John Ferlan 2021-09-17 14:02:31 UTC 
Bulk update: Move RHEL8 bugs to RHEL9. If necessary to resolve in RHEL8, then clone to the current RHEL8 release.
Comment 38 Klaus Heinrich Kiwi 2022-01-19 14:02:29 UTC 
As we discussed this on a recent meeting, the issue is really on the NFS server, and the KB article (https://access.redhat.com/solutions/6231411) is accurate in working around it.
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