*** This bug is a duplicate of bug 1012946 ***
https://bugs.launchpad.net/bugs/1012946
Still not fixed... I have found a workaround which was working (bellow) but now
its not working anymore...
Same stuff like above in previous posts...
Someone spotted:
Please note that if you want to
*** This bug is a duplicate of bug 1012946 ***
https://bugs.launchpad.net/bugs/1012946
Still not fixed... I have found a workaround which was working (bellow) but now
its not working anymore...
Same stuff like above in previous posts...
Someone spotted:
Please note that if you want to
*** This bug is a duplicate of bug 1012946 ***
https://bugs.launchpad.net/bugs/1012946
** This bug has been marked a duplicate of bug 1012946
dm-part-sync.patch breaks creating multiple partitions on a LVM volume
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*** This bug is a duplicate of bug 1012946 ***
https://bugs.launchpad.net/bugs/1012946
** This bug has been marked a duplicate of bug 1012946
dm-part-sync.patch breaks creating multiple partitions on a LVM volume
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** Also affects: lvm2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1029889
Title:
LVM Based KVM VM taking 100% CPU on first
@Lewdmole,
Looking at your vg and lvdisplay output, it looks like you should have
plenty of space for vm5.
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Title:
LVM Based
@Lewdmole,
Looking at your vg and lvdisplay output, it looks like you should have
plenty of space for vm5.
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Title:
LVM Based
Isn't this duplicate of bug 1012946 ?
Can you please try parted from precise-proposed as per instructions in:
https://bugs.launchpad.net/ubuntu/+source/parted/+bug/1012946/comments/11
and comment here or on the bug 1012946.
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Ok will give it a try and post on bug bug 1012946.
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Title:
LVM Based KVM VM taking 100% CPU on first start and hangs.
To
** Also affects: lvm2 (Ubuntu)
Importance: Undecided
Status: New
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Title:
LVM Based KVM VM taking 100% CPU on first start and hangs.
@Lewdmole,
Looking at your vg and lvdisplay output, it looks like you should have
plenty of space for vm5.
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Title:
LVM Based KVM VM taking 100%
@Lewdmole,
Looking at your vg and lvdisplay output, it looks like you should have
plenty of space for vm5.
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Title:
LVM Based KVM VM taking 100%
Isn't this duplicate of bug 1012946 ?
Can you please try parted from precise-proposed as per instructions in:
https://bugs.launchpad.net/ubuntu/+source/parted/+bug/1012946/comments/11
and comment here or on the bug 1012946.
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Ok will give it a try and post on bug bug 1012946.
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Title:
LVM Based KVM VM taking 100% CPU on first start and hangs.
To manage notifications
Sorry for the delay I have tried File based VM works without problems.
I can add another File based VM - I have installed via vmbuilder:
vmbuilder kvm ubuntu \
--suite=precise \
--flavour=virtual \
--arch=amd64 \
--mem=512 \
--hostname=vm4 \
--bridge=br0 \
vgdisplay and lvdisplay
Is there any minimum space required on volume group to create LVM based
VM apart of the LV size of the particular VM ?
** Attachment added: lvdisplay.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3397953/+files/lvdisplay.txt
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** Attachment added: vgdisplay.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3397954/+files/vgdisplay.txt
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Sorry for not responding for so long.
Just to be sure, your symptoms are exactly the same as in the
Description - kvm hangs (no response to network or the vnc console) and
takes 100% cpu?
Yes, the symptoms are exactly the same.
Unfortunately, based on your .xml file it looks like you're not
@Serge,
Let me know what else we could try to diagnose this problem.
This is the same VM machine created via vmbuilder with LVM volumes:
lvcreate -L26G -n vm5 virtualvg
vmbuilder.partition
root 2
swap 6000
boot.sh
# Install openssh-server
apt-get update
apt-get install -qqy --force-yes
VM Builder Logs for VM4 - File Based and VM5 - LVM Based
Partition setup and boot.sh are identical:
vmbuilder.partition
root 2
swap 6000
boot.sh
# Install openssh-server
apt-get update
apt-get install -qqy --force-yes openssh-server
RESULT:
VM4 (File Based) - Works No Problem
VM5 (LVM
** Attachment added: vmbuilder-install-lvm-based-log.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398046/+files/vmbuilder-install-lvm-based-log.txt
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** Attachment added: lvdisplay-after-vm5-install.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398048/+files/lvdisplay-after-vm5-install.txt
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** Attachment added: vgdisplay-after-vm5-install.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398047/+files/vgdisplay-after-vm5-install.txt
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Sorry for the delay I have tried File based VM works without problems.
I can add another File based VM - I have installed via vmbuilder:
vmbuilder kvm ubuntu \
--suite=precise \
--flavour=virtual \
--arch=amd64 \
--mem=512 \
--hostname=vm4 \
--bridge=br0 \
vgdisplay and lvdisplay
Is there any minimum space required on volume group to create LVM based
VM apart of the LV size of the particular VM ?
** Attachment added: lvdisplay.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3397953/+files/lvdisplay.txt
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** Attachment added: vgdisplay.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3397954/+files/vgdisplay.txt
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Sorry for not responding for so long.
Just to be sure, your symptoms are exactly the same as in the
Description - kvm hangs (no response to network or the vnc console) and
takes 100% cpu?
Yes, the symptoms are exactly the same.
Unfortunately, based on your .xml file it looks like you're not
@Serge,
Let me know what else we could try to diagnose this problem.
This is the same VM machine created via vmbuilder with LVM volumes:
lvcreate -L26G -n vm5 virtualvg
vmbuilder.partition
root 2
swap 6000
boot.sh
# Install openssh-server
apt-get update
apt-get install -qqy --force-yes
VM Builder Logs for VM4 - File Based and VM5 - LVM Based
Partition setup and boot.sh are identical:
vmbuilder.partition
root 2
swap 6000
boot.sh
# Install openssh-server
apt-get update
apt-get install -qqy --force-yes openssh-server
RESULT:
VM4 (File Based) - Works No Problem
VM5 (LVM
** Attachment added: vmbuilder-install-lvm-based-log.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398046/+files/vmbuilder-install-lvm-based-log.txt
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** Attachment added: vgdisplay-after-vm5-install.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398047/+files/vgdisplay-after-vm5-install.txt
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** Attachment added: lvdisplay-after-vm5-install.txt
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1029889/+attachment/3398048/+files/lvdisplay-after-vm5-install.txt
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@Lewdmole,
have you had a chance to try this out without lvm?
** Changed in: libvirt (Ubuntu)
Status: New = Incomplete
** Changed in: qemu-kvm (Ubuntu)
Status: New = Incomplete
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@Lewdmole,
have you had a chance to try this out without lvm?
** Changed in: libvirt (Ubuntu)
Status: New = Incomplete
** Changed in: qemu-kvm (Ubuntu)
Status: New = Incomplete
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@Serge
I have not tried that with non-LVM backend as we generalu use faster LVM
backend.
Will do a test next week after my vacations.
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@Serge
I have not tried that with non-LVM backend as we generalu use faster LVM
backend.
Will do a test next week after my vacations.
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Title:
@Luke,
thanks for the information. Just to be sure, your symptoms are exactly
the same as in the Description - kvm hangs (no response to network or
the vnc console) and takes 100% cpu?
Unfortunately, based on your .xml file it looks like you're not using an
LVM backed VM. I wonder if we
@Lewdmole,
have you seen this happen with non-lvm backed VMs?
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Title:
LVM Based KVM VM taking 100% CPU on first start and
@Luke,
thanks for the information. Just to be sure, your symptoms are exactly
the same as in the Description - kvm hangs (no response to network or
the vnc console) and takes 100% cpu?
Unfortunately, based on your .xml file it looks like you're not using an
LVM backed VM. I wonder if we
@Lewdmole,
have you seen this happen with non-lvm backed VMs?
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Title:
LVM Based KVM VM taking 100% CPU on first start and hangs.
To manage
#0 0x7fc1e6d77823 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x7fc1ea661da0 in main_loop_wait (nonblocking=optimized out) at
main-loop.c:456
#2 0x7fc1ea5cb5ff in main_loop () at
/build/buildd/qemu-kvm-1.0+noroms/vl.c:1482
#3 main (argc=optimized out, argv=optimized out,
!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
virsh edit lb1
or other application using the libvirt API.
--
domain type='kvm'
namelb1/name
I've attached the VM instance's definition and the debugging output from
gdb (which seemed quite minimal). Let me know if you need me to install
debugging symbols for libc as well, or if you need any other data.
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#0 0x7fc1e6d77823 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x7fc1ea661da0 in main_loop_wait (nonblocking=optimized out) at
main-loop.c:456
#2 0x7fc1ea5cb5ff in main_loop () at
/build/buildd/qemu-kvm-1.0+noroms/vl.c:1482
#3 main (argc=optimized out, argv=optimized out,
!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
virsh edit lb1
or other application using the libvirt API.
--
domain type='kvm'
namelb1/name
I've attached the VM instance's definition and the debugging output from
gdb (which seemed quite minimal). Let me know if you need me to install
debugging symbols for libc as well, or if you need any other data.
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I have experienced the same issue with 1 of 3 identical machines. All
Intel Xeon E31230 @ 3.20GHz. Let me know if there is anything I can do
to help diagnose it.
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Hi,
I still suffer from the issue described above even after various kernel and
libvirt updates
which were issued by ubuntu.
Serge Hallyn tried to repeat this issue but without success.
Please try the procedures I was trying and post the logs and debug information
here along with
your VM setup
Please follow the instructions in the section Debug Symbol Packages on
https://wiki.ubuntu.com/DebuggingProgramCrash to install qemu-kvm-
dbgsym. Restart one of the machine which hangs taking 100% cpu, then
from another terminal do
gdb -p $(pidof kvm) # or insert the pid of the hanging kvm
I have experienced the same issue with 1 of 3 identical machines. All
Intel Xeon E31230 @ 3.20GHz. Let me know if there is anything I can do
to help diagnose it.
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Hi,
I still suffer from the issue described above even after various kernel and
libvirt updates
which were issued by ubuntu.
Serge Hallyn tried to repeat this issue but without success.
Please try the procedures I was trying and post the logs and debug information
here along with
your VM setup
Please follow the instructions in the section Debug Symbol Packages on
https://wiki.ubuntu.com/DebuggingProgramCrash to install qemu-kvm-
dbgsym. Restart one of the machine which hangs taking 100% cpu, then
from another terminal do
gdb -p $(pidof kvm) # or insert the pid of the hanging kvm
** Changed in: libvirt (Ubuntu)
Status: Incomplete = New
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = New
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Title:
LVM
Hi,
thanks for the info and links. The patch at
http://www.mail-archive.com/kvm@vger.kernel.org/msg39396.html should certainly
be present in precise's kernel, but just to test, on the machine where it
fails, could you try running without apic (remove the
apic/
line from the xml, or
I have downloaded the cloud image precise-server-cloudimg-
amd64-disk1.img
1. convert to raw
$ qemu-img convert -O raw precise-server-cloudimg-amd64-disk1.img
precise-server-cloudimg-amd64-disk1.raw
2. dd it onto the hard drive.
# dd if=precise-server-cloudimg-amd64-disk1.raw
Conclusions:
- The VM DOES NOT BOOT the image is not corrupt as the cloud image neither
boots.
- Other vms on that problematic machine running fine so the kvm-qemu and
libvirt should be fine as well.
- There is still enough memory on that machine. (screenshot in prev post)
- By comparing
** Attachment added: SHA1SUM of update packages on problematic server
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1029889/+attachment/3240359/+files/server1_update_sha1sum.txt
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** Attachment added: SHA1SUM of update packages on working server
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1029889/+attachment/3240360/+files/server2_update_sha1sum.txt
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1. Posted the SHA1SUMS
2. Server1 (problematic server) - I have tried again to install different VMs
via vmbuilder all finished installation successfully but hanged on startup (via
virsh) taking 100% cpu - I am pretty sure the VMs are not booting as there is
nothing in boot log on LV of
** Package changed: ubuntu = libvirt (Ubuntu)
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Title:
LVM Based KVM VM taking 100% CPU on first start and hangs.
To manage notifications about
Thanks for submitting this bug. Could you please
1. while the guest is running, do 'ps -ef' and paste the result.
2. attach the guest xml file ('virsh dumpxml vm4 vm4.xml' should give you a
file you can attach)
3. run 'apport-collect 1029889' so apport can send us relevant qemu-kvm and
RESULT: ps -ef
UIDPID PPID C STIME TTY TIME CMD
root 1 0 0 14:08 ?00:00:00 /sbin/init
root 2 0 0 14:08 ?00:00:00 [kthreadd]
root 3 2 0 14:08 ?00:00:00 [ksoftirqd/0]
root 6 2 0 14:08 ?00:00:00
VM BUILDER INSTALL LOG:
2012-07-27 14:36:20,094 INFO: Calling hook: preflight_check
2012-07-27 14:36:20,096 INFO: Calling hook: set_defaults
2012-07-27 14:36:20,097 INFO: Calling hook: bootstrap
2012-07-27 14:39:35,613 INFO: Calling hook: configure_os
2012-07-27 14:39:59,199 INFO
I have mounted the LV of the VIRTUAL MACHINE and extracted some logs:
It seems that the machine has not booted as the boot.log is empty:
I have attached all thelogs and report for HOST and also for GUEST:
HOST:
libvirtd.log
shutdownlog.log
vm4.log
ps-while-guest-running.txt
top.txt
VM XML:
domain type='kvm'
namevm4/name
uuid3e3850e3-b0f3-ca26-c0cb-f5499b2fccec/uuid
memory524288/memory
currentMemory524288/currentMemory
vcpu1/vcpu
os
type arch='x86_64' machine='pc-1.0'hvm/type
boot dev='hd'/
/os
features
acpi/
/features
clock offset='utc'/
** Attachment added: VM XML Descriptor
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1029889/+attachment/3238668/+files/vm4.xml
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** Attachment added: ps -ef while VM Guest Running
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1029889/+attachment/3238670/+files/ps-while-guest-running.txt
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When I simply grab a working root image (i.e. https://cloud-
images.ubuntu.com/releases/precise/release-20120616/ubuntu-12.04-server-
cloudimg-amd64-disk1.img), convert it to raw, and dd it to an lvm
partition, it comes up fine. So it appears vmbuilder may be doing
something either wrong, or just
I can't reproduce this.
To be clear, you did not have this problem with 1.0+noroms-0ubuntu13,
but you did as of 1.0+noroms-0ubuntu14 ? Can you confirm that by re-
installing 1.0+noroms-0ubuntu13 (using 'dpkg -i
/var/cache/apt/archives/qemu*ubuntu13*.deb') ?
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Will try to test it with the cloud image tmrw and also re-installing
1.0+noroms-0ubuntu13
Will do second test on other machine running the same setup.
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1.0+noroms-0ubuntu13 worked fine with all VM com up fine with the same
vmbuilder setup
after update to 1.0+noroms-0ubuntu14 VM doesnt come up
NEEDS CONFIRMATION
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second hardware machine running exactly the same setup Ubuntu 12.04 and KVM
creates and runs this VM without problem.
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Title:
LVM Based KVM VM
This makes me wonder whether one of the packages installed on the first
machine is corrupt. Does sha1sum /var/cache/apt/archives/qemu*ubuntu14*
show the same results on both systems?
The ps -ef output confirms that kvm is not being called by libvirt with
-pidfile, so the change from ubuntu13 to
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