2018-02-19 13:53 UTC

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IDProjectCategoryView StatusLast Update
0014454CentOS-6kernelpublic2018-02-09 21:12
Reporterthemiz 
PriorityhighSeveritymajorReproducibilityalways
StatusassignedResolutionopen 
PlatformX64OSCentos 6OS Version6
Product Version6.9 
Target VersionFixed in Version 
Summary0014454: Kernel 2.6.32-696.20.1 and latest xen-tools crashes VM
DescriptionWith kernel 2.6.32-696.20.1.el6.x86_64 AND the latest version of xe-tools-distribution enabled (xe-linux-distribution startup service, provided by these two official rpm):

xe-guest-utilities-xenstore-7.1.0-41.x86_64
xe-guest-utilities-7.1.0-41.x86_64

VM hangs on boot (see screenshot).

If I disabled the xe-linux-distribution service (which I obviously need) VM starts correctly.

Other kernels:
kernel 2.6.32-696.16.1.el6.x86_64 -> VM boots fine, everything ok
kernel-ml -> 4.15.0-1.el6.elrepo.x86_64 -> no boot at all
kernel-lt -> 4.4.113-1.el6.elrepo.x86_64 -> VM boots fine, xe-linux-distribution service ok, everything working !

Any advice would be appreciated...
TagsNo tags attached.
Attached Files

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-Notes

~0031152

klou (reporter)

I've also experienced this with XenServer 7.0 (CentOS 6 x64 PV guest), xe-guest-utilities-7.0.x/xe-guest-utilities-xenstore-7.0.x.

Removing those packages resolves the issue and allows the VM to boot normally (otherwise it hangs on the xe service), but that's obviously less than ideal.

~0031156

mk (reporter)

We also have the same problems with kernel 2.6.32-696.20.1.el6.x86_64 and XenServer.

We tested some different scenarios:

XenServer 7.0, CentOS 6 x64 PV guest, XenTools 7.0.0-24 >> Boot failed
XenServer 7.1 LTSR, CentOS 6 x64 PV guest, XenTools 7.1.0-41 >> Boot failed
XenServer 7.1 LTSR, CentOS 6 x64 PV guest, XenTools 7.3.0-1 >> Boot failed

Allways the same, after the new kernel is installed and the vm rebooted it stops during the boot when Linux starts the xe daemon during boot. Sometimes you can see error messsages on the console. (screenshot attached)

No Problems with kernel 2.6.32-696.16.1.el6.x86_64 in all 3 scenarios.

~0031162

choof (reporter)

I iterated some Xen tools versions with kernel-2.6.32-696.20.1.el6.x86_64 on XenServer 6.2.

Here are my results:

xe-guest-utilities-6.5.0-1432.x86_64 - ok
xe-guest-utilities-7.1.0-41.x86_64 - broken
xe-guest-utilities-7.3.0-1.x86_64 - broken
xe-guest-utilities-7.4.0-1.x86_64 - ok

~0031163

choof (reporter)

Correction to my previous comment: I meant XenServer 7.2, not 6.2.

~0031164

ixohack (reporter)

I have expirienced this issue, had to remove the xe-guest rpms.

Also in the same issue when we try to migrate from PV to HVM, the kernel does not boot.

Steps done based on this url:
https://xen-orchestra.com/blog/meltdown-and-spectre-for-xenserver/#migratingfrompvtohvm

After the steps are done, the GRUB starts on boot and tells that will load the kernel [latest] in 3 sec, after that a black screen shows with a cursor blinkinkg 2 times and then VM shutdown with no error.

Boot log does not get updated.

Using 6.9 PV to HVM in Xen 7.0

Any help thanks,

~0031182

themiz (reporter)

Further update:

kernel-2.6.32-696.20.1.el6.x86_64 AND xe-guest-utilities-7.9.0-1.x86_64.rpm
is working !

~0031183

ixohack (reporter)

Themiz thanks for sharing, how did you get this xe-guest-utilities-7.9.0-1.x86_64.rpm packages?

Dont see them on Xen 7.0

~0031185

themiz (reporter)

Found in the xenserver 7.3 iso:

/opt/xensource/packages/iso/guest-tools-7.21.0-1.iso

where you find xenserver-pv-tools-7.21.0-1.noarch.rpm; inside the rpm there is the iso installer, containing:

xe-guest-utilities-7.9.0-1.x86_64.rpm
xe-guest-utilities-xenstore-7.9.0-1.x86_64.rpm

....I still don't know if they are fully backword compatible...

~0031199

centsallday (reporter)

Same issue too: 2.6.32-696.20.1.el6 on XenServer 7.1 LTSR
+Notes

-Issue History
Date Modified Username Field Change
2018-02-02 10:32 themiz New Issue
2018-02-02 10:32 themiz File Added: Schermata a 2018-01-29 15-56-38.png
2018-02-02 19:00 klou Note Added: 0031152
2018-02-05 13:13 mk File Added: xen-kernel-2.6.32-696.20.1.el6.jpg
2018-02-05 13:13 mk Note Added: 0031156
2018-02-05 16:25 toracat Status new => assigned
2018-02-05 16:26 toracat Description Updated View Revisions
2018-02-06 13:53 choof Note Added: 0031162
2018-02-06 13:55 choof Note Added: 0031163
2018-02-06 14:11 ixohack Note Added: 0031164
2018-02-07 14:50 themiz Note Added: 0031182
2018-02-07 15:21 ixohack Note Added: 0031183
2018-02-07 15:52 themiz Note Added: 0031185
2018-02-09 21:12 centsallday Note Added: 0031199
+Issue History