This bug was fixed in the package libvirt - 6.0.0-0ubuntu8.1
---
libvirt (6.0.0-0ubuntu8.1) focal; urgency=medium
* d/p/ubuntu/lp-1879325-*: avoid issues with apparmor metadata labeling
(LP: #1879325)
-- Christian Ehrhardt Wed, 20 May
2020 06:59:57 +0200
** Changed in:
** Tags removed: verification-needed verification-needed-focal
** Tags added: verification-done verification-done-focal
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https://bugs.launchpad.net/bugs/1879325
Title:
Unable to remove
Hey Brian,
I tested the new packages in our CI and I can confirm the original issues are
both gone.
This is a recent libvirt log file:
Hello Riccardo, or anyone else affected,
Accepted libvirt into focal-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/libvirt/6.0.0-0ubuntu8.1 in a few
hours, and then in the -proposed repository.
Please help us by testing this new package. See
Now that the fix migrated in groovy I uploaded it to focal-unapproved
for the consideration by the SRU Team.
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Title:
Unable to remove disk
This bug was fixed in the package libvirt - 6.0.0-0ubuntu9
---
libvirt (6.0.0-0ubuntu9) groovy; urgency=medium
* d/p/ubuntu/lp-1879325-*: avoid issues with apparmor metadata labeling
(LP: #1879325)
-- Christian Ehrhardt Wed, 20 May
2020 06:59:57 +0200
** Changed in:
FYI: Fix uploaded to groovy
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Title:
Unable to remove disk metadata on vm
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Ok Riccardo, could you - once you find the other issue - file a new bug then.
I'll take this bug here to drive the issue(s) identified to far to a conclusion.
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Hi Christian,
I ran a test in our CI with the packages:
2020-05-26 16:52:02.258571 | controller | Get:1
http://ppa.launchpad.net/ci-train-ppa-service/4068/ubuntu focal/main amd64
libvirt-dev amd64 6.0.0-0ubuntu8.2~ppa1 [161 kB]
2020-05-26 16:52:02.486631 | controller | Get:2
** Description changed:
[Impact]
- * The impact is log flooding with warnings for every guest start/stop
+ * The impact is log flooding with warnings for every guest start/stop
- * Maybe the impact also has in some cases worse effects due to the bad RC
-of the function e.g.
The extra change we need is now pushed upstream
=>
https://libvirt.org/git/?p=libvirt.git;a=commit;h=55029d93150e33d70b02b6de2b899c05054c5d3a
My PPA builds include this final version of the change and the initially
referred fix for the warning.
Waiting for MP review by the team now.
@Riccardo
Got a Review-by already, will wait another 24h or so before pushing and
preparing a build with it.
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Title:
Unable to remove disk metadata on vm
In my testing all errors of the following kind are gone now:
- internal error: child reported (status=125)
- Unable to remove disk metadata on vm testguest from
/var/lib/uvtool/libvirt/images/testguest.qcow (disk target vda)
@Riccardo - does this make your CI happy as well?
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FYI - The commits mentioned above were a copy accident - they are
not important to be mentioned.
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Title:
Unable to remove disk metadata on vm
5243d34b4f (paelzer/fix-lp-1879325-metadata-FOCAL,
fix-lp-1879325-metadata-FOCAL) changelog: avoid issues with apparmor metadata
labeling (LP: #1879325)
ad0478c226
I have put a version with that fix in the PPA [1] for
Focal: 6.0.0-0ubuntu8.2~ppa1
Groovy: 6.0.0-0ubuntu10~ppa1
That way I can
Discussion went on until
https://www.redhat.com/archives/libvir-list/2020-May/msg01088.html
Fix submitted as
https://www.redhat.com/archives/libvir-list/2020-May/msg01089.html and waiting
for feedback.
** Changed in: libvirt (Ubuntu Focal)
Status: Incomplete => Triaged
** Changed in:
Replied to the referred fix describing what happens here outlining that the
overall case isn't fixed yet.
=> https://www.redhat.com/archives/libvir-list/2020-May/msg01067.html
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To be clear on the severity, the change won't make the meta data now
being applied. We never did and we don't need that. But that failing un-
labelling does flood the error logs and it's bad return code might cause
other steps on e.g. shutdown to be skipped.
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I've checked some releases back and we build with:
--without-attr
since what seems forever.
Maybe the code can't handle !HAVE_LIBATTR as good as the old did.
And configure confirms showing
configure: attr: no
throughout all the builds.
That theory LGTM as the metadata
At -O2 the function seems to be inlined which makes debugging a bit
harder.
This is the function returning the bad RC, but not only itself but also
most of its callees are inlined virSecurityGetRefCountAttrName
virSecurityGetAttrName virSecurityGetTimestampAttrName.
461 if
1129if (!priv->dynamicOwnership)
is set
1132if (src && virStorageSourceIsLocalStorage(src))
is true and sets
(gdb) p data.src
$18 = 0x7f8c500271e0 "/var/lib/uvtool/libvirt/images/testguest.qcow"
1135 if (dst && virStorageSourceIsLocalStorage(dst))
Since that is a fork this needs
(gdb) set detach-on-fork off
(gdb) set follow-fork-mode child
To be able to track the virSecurityDACMoveImageMetadataHelper
Inside of virSecurityDACMoveImageMetadataHelper we have
(gdb) p *data
$27 = {mgr = 0x7f8c1805cf10, src = 0x7f8c50031a10
I reach the upper virFileGetXAttrQuiet
Thread 3.1 "libvirtd" hit Breakpoint 10, virFileGetXAttrQuiet
(path=path@entry=0x7f8c50041390
"/var/lib/uvtool/libvirt/images/testguest-ds.qcow",
name=name@entry=0x7f8c1803dc40 "trusted.libvirt.security.ref_dac",
value=value@entry=0x7f8c29b605e0) at
I was debugging the case in gdb to check what exactly fail
qemuBlockRemoveImageMetadata (the one that emits the warning)
-> qemuSecurityMoveImageMetadata
-> virSecurityManagerMoveImageMetadata (where the former function was
missing)
The first hit is the stacked security, which has an
It calls:
virProcessRunInFork for virSecurityDACMoveImageMetadataHelper
And I was able to confirm that this is the "remaining" source of a
negative return code that was formerly hidden behind the missing
function.
Thread 18 "libvirtd" hit Breakpoint 4, virSecurityDACMoveImageMetadata
Yeah those two you still see, that was expected.
The fix you referred to only eliminated the former messages in regard to "this
function is not supported"
I agree in my repro that the following two kind of messages stay (for now):
internal error: child reported (status=125):
Unable to
Hi Christian,
thank you for your patience, I just finished testing the new package in our ci
and unfortunately I'm still seeing the same message about disk metadata:
2020-05-22 09:21:40.896+: 96720: error : virProcessRunInFork:1159 :
internal error: child reported (status=125):
2020-05-22
Hi Christian,
thanks for the quick answer and fix, I'll test that in our CI as soon as
possible.
What actually worries me is the message "unable to remove disk metadata", but I
guess we'll have to wait for the CI jobs to complete to see if there was an
improvement on the related error that
** Merge proposal linked:
https://code.launchpad.net/~paelzer/ubuntu/+source/libvirt/+git/libvirt/+merge/384244
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Title:
Unable to remove
I tested the PPA and it works to eliminate the warnings.
No more appear:
Mai 20 07:24:40 Keschdeichel libvirtd[2638]: this function is not supported by
the connection driver: virSecurityManagerMoveImageMetadata
Mai 20 07:24:40 Keschdeichel libvirtd[2638]: internal error: child reported
** Merge proposal linked:
https://code.launchpad.net/~paelzer/ubuntu/+source/libvirt/+git/libvirt/+merge/384243
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Title:
Unable to remove
Added an SRU template in preparation.
@Riccardo - in addition to trying the PPA, would you let me know if in your
environment this is "just the warning flooding the log" or does it also have
more severe impact like a function failing?
If so does the PPA only fix the warning or also the formerly
Incomplete for now waiting on user reply in regard to the PPA fix.
** Changed in: libvirt (Ubuntu)
Status: Triaged => Incomplete
** Changed in: libvirt (Ubuntu Focal)
Status: Triaged => Incomplete
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Note: related upstream issue
https://gitlab.com/libvirt/libvirt/-/issues/25
Hi Riccardo,
thanks for the report and the discussion until there was a fix.
I have prepared PPAs for Groovy and Focal including that fix for you to
try if that change alone is really sufficient for your case as well. If
** Changed in: libvirt (Ubuntu)
Status: New => Triaged
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Title:
Unable to remove disk metadata on vm
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