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Bug 1536222 - [ESXi][RHEL7.5]Freezing filesystems on a VM that has bind-mounted filesystems fails with ENXIO
Summary: [ESXi][RHEL7.5]Freezing filesystems on a VM that has bind-mounted filesystems...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: open-vm-tools
Version: 7.4
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Cathy Avery
QA Contact: ldu
URL:
Whiteboard:
Depends On: 1527233
Blocks: 1582123
TreeView+ depends on / blocked
 
Reported: 2018-01-18 23:05 UTC by Alexandros Panagiotou
Modified: 2021-09-29 01:29 UTC (History)
15 users (show)

Fixed In Version: open-vm-tools-10.2.5-2.el7
Doc Type: If docs needed, set a value
Doc Text:
Previously, performing a quiesced snapshot of a guest virtual machine failed if the guest had a bind mount configured. With this update, the quiesce operation skips bound mount points, and a quiesced snapshot can be successfully performed on the affected guests.
Clone Of:
: 1582123 (view as bug list)
Environment:
Last Closed: 2018-10-30 09:48:24 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
reproducer steps provided by customer (1.58 KB, text/plain)
2018-01-18 23:05 UTC, Alexandros Panagiotou 		no flags Details
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2018:3104 0 None None None 2018-10-30 09:49:41 UTC

Description Alexandros Panagiotou 2018-01-18 23:05:28 UTC 
Created attachment 1383085 [details]
reproducer steps provided by customer

Description of problem:
Freezing filesystems on a VM that has bind-mounted filesystems fails with ENXIO.

Version-Release number of selected component (if applicable):
open-vm-tools-10.1.5-3.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Install haproxy and create the bind-mount:
   yum install haproxy
   mkdir /var/lib/haproxy/dev
   touch /var/lib/haproxy/dev/log
   mount -o bind /dev/log /var/lib/haproxy/dev/log
2. Configure haproxy to use /dev/log
3. Start haproxy: systemctl start haproxy
4. Run backup

A more detailed description can be found in the attached text file.

Actual results:
Freezing filesystems fails. The following logs are written in vmsvc logs:

...
[Dec 18 14:10:23.743] [   debug] [vmsvc] SyncDriver: failed to open '/var/lib/haproxy/dev/log': 6 (No such device or address)
...
[Dec 18 14:10:23.745] [ warning] [vmbackup] Error freezing filesystems.
...

Expected results:
Freezing filesystems succeeds.

Additional info:
Upstream bug report and pull request (accepted by VMware): https://github.com/vmware/open-vm-tools/pull/218
Comment 2 Richard W.M. Jones 2018-01-18 23:12:37 UTC 
Fix is super-simple, but it's very late in the RHEL 7.5 cycle.
I'll leave this one up to Jeff to decide.  However even if we
don't take it for 7.5 GA, I think it should be in a 7.5 z-stream
release.
Comment 3 Junfeng Wang 2018-01-22 09:34:50 UTC 
this issue can be reproduced in our environment
Comment 4 Cathy Avery 2018-01-22 12:09:44 UTC 
(In reply to Richard W.M. Jones from comment #2)
> Fix is super-simple, but it's very late in the RHEL 7.5 cycle.
> I'll leave this one up to Jeff to decide.  However even if we
> don't take it for 7.5 GA, I think it should be in a 7.5 z-stream
> release.

Whats the fix? Is it upstream?
Comment 5 Richard W.M. Jones 2018-01-22 12:12:57 UTC 
https://github.com/vmware/open-vm-tools/pull/218

It is NOT upstream as far as I can tell.
Comment 6 Ravindra Kumar 2018-01-22 19:05:13 UTC 
Upstream fix is planned for the next minor update of open-vm-tools 10.2.x, which is couple of months away.
Comment 7 Cathy Avery 2018-01-24 14:39:41 UTC 
OK then this bug should be targeted for 7.6.
Comment 8 Jeff Nelson 2018-01-24 16:38:33 UTC 
Per comments 6 and 7, targeting for 7.6.
Comment 9 Alexandros Panagiotou 2018-04-20 18:09:47 UTC 
Hello, 
From https://github.com/vmware/open-vm-tools/releases, I understand that open-vm-tools 10.2.5 is now released and as far as I can tell it contains the fix - therefore it is now upstream.

Would it make sense to add the "Patch" keyword? Also given #2, does it make sense to keep it waiting for 7.6?

Thanks and Regards,
Alexandros
Comment 10 Cathy Avery 2018-04-20 19:03:47 UTC 
(In reply to Alexandros Panagiotou from comment #9)

I'm reassigning this to Jeff. The rebase is in his domain. I think the patch has to be in 7.6 before we can backport it to z-stream. Rich will correct me if I'm wrong.
Comment 12 Jeff Nelson 2018-04-20 23:19:08 UTC 
Because the rebase is expected to fix the problem, I've set the status to POST. This is one of several conditions for requesting a backport to 7.5.z, so I've gone ahead and requested that too. It would help if someone could provide a justification for the backport.
Comment 17 Cathy Avery 2018-05-24 13:29:57 UTC 
@Ravindra

Hi,

I'm going to need an upstream patch commit for this fix in order to insert it into the 7.5.z stream. I will also subsequently provide a build for you to test.

Thanks,

Cathy
Comment 18 Ravindra Kumar 2018-05-24 23:10:46 UTC 
(In reply to Cathy Avery from comment #17)
> I'm going to need an upstream patch commit for this fix in order to insert
> it into the 7.5.z stream.

It is here - https://github.com/vmware/open-vm-tools/commit/6559b7dfd9f6f40c2df76e1b1e785fa3eb1c1da4.
Comment 19 Yaju Cao 2018-06-14 09:30:43 UTC 
Change to 'ON_QA' since fix is included in rebase Bug 1527233, of which status is ON_QA.
Comment 20 ldu 2018-08-09 07:51:42 UTC 
verify this bug with RHEL7.6 guest on VMware ESXi6.0

Verify version:
kernel-3.10.0-862.el7.x86_64
open-vm-tools-10.2.5-2.el7.x86_64

Verify steps:
1. Install haproxy and create the bind-mount:
   yum install haproxy
   mkdir /var/lib/haproxy/dev
   touch /var/lib/haproxy/dev/log
   mount -o bind /dev/log /var/lib/haproxy/dev/log
2. Configure haproxy to use /dev/log
3. Start haproxy: systemctl start haproxy
4. Take sanpshot with quiesce guest file system

The test result: Verified
The snapshot with quiesce guest file system succeeds and no error log found.
Comment 22 errata-xmlrpc 2018-10-30 09:48:24 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, 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/RHEA-2018:3104
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