[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I have had this exact problem with Ubuntu Server 16.04 thru 18.04 current on Citrix XenServer from version 7.1 thru 7.6 current. Either HVM or PV, it doesn't seem to matter. When I live-migrate a Ubuntu Server VM, it seems like i have a 1/6 chance of the machine freezing within about a minute of

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Tags added: cscc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To manage

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Changed in: linux (Ubuntu) Status: In Progress => Invalid ** Changed in: linux (Ubuntu Xenial) Status: In Progress => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Since 16.04.4 LTS with Kernel 4.4.0-128-generic/x86_64 the problems seems to be fixed. Our VM with more than one VHD are running without problems for two weeks now. Neither backups nor cluster failovers are crashing the VM. -- You received this bug notification because you are a member of Ubuntu

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The problem still here... ** Changed in: linux (Ubuntu) Status: Fix Released => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-124-generic x86_64) The problem still here... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

On 16.04, does this reproduce with the linux-azure kernel? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Changed in: linux (Ubuntu Xenial) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) ** Changed in: linux (Ubuntu) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I'm also having this exact same issue with the same specs as Никита. 2012 R2, Hyper-v, Gen1. VM: Ubuntu Server 16.04.03LTS, kernel - 4.4.0-112-generic, 2 disks. linux-cloud-tools-virtual-lts-xenial 4.4.0.112.118 linux-tools-virtual-lts-xenial 4.4.0.112.118 -- You received this bug

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Same: Use Windows Server 2012 R2, Hyper-V, GEN1 VM's. VM: Ubuntu Server 16.04.03LTS, kernel - 4.4.0-112-generic, 2 disks. linux-cloud-tools-virtual-lts-xenial 4.4.0.112.118 linux-tools-virtual-lts-xenial 4.4.0.112.118 VM down with out of memory. ** Attachment added: "syslog.txt"

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Same: VMs with more than one disk still crash with out of memory. We're using Hyper-V on Windows Server 2012 R2 (core) with GEN2 VMs (Ubuntu 16.04 LTS/Xenial, Kernel 4.4.0-112-generic). VMs with just one disk are running perfectly. Vss with 1disk ok Vss with 2disk > freeze with out of

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I can confirm: VMs with more than one disk still crash with out of memory. We're using Hyper-V on Windows Server 2012 R2 with GEN2 VMs (Ubuntu 16.04.3 LTS/Xenial, Kernel 4.4.0-104-generic). VMs with just one disk are running perfectly. -- You received this bug notification because you are a

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

same Problem here Windows Server 2012 R2 16.04.3 LTS (Xenial Xerus) 4.4.0-104-generic Only the VM's with more than 1 Disk freezes with out of memory. GEN1 and GEN2 doesn't matter in that case. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Changed in: linux (Ubuntu) Status: In Progress => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The problem still here... Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-101-generic x86_64) on Hyper-V 2012 R2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Running some Hyper-V-VM´s with Ubuntu 16.04.3 with different Kernels and backed up via. Backup Exec 15 4.4.0-62-generic is fine 4.4.0-98-generic is fine 4.4.0-101-generic is fine In the past I had problems with: 4.4.0-81-generic 4.4.0-83-generic Installed LIS on every VM as follows :

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

As predicted 4.11.0-1015-azure #15-Ubuntu doesn't have the problem and you see output like this: [ 24.635325] sd 1:0:0:0: Attached scsi generic sg2 type 0 [ 24.638674] sd 1:0:0:0: [sdb] 500118192 512-byte logical blocks: (256 GB/238 GiB) [ 24.641194] sd 1:0:0:0: [sdb] Write Protect is off

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Joshua - I'm fairly certain it should be fixed in 4.11 - will reply when I have a chance. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Interesting. Does this also reproduce with the linux-azure kernel, which is based on 4.11? (this should also work for on premises use, but you may have to install the "extra" package if you are using PCI passthrough). -- You received this bug notification because you are a member of Ubuntu Bugs,

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Perhaps in addition to the DVD fix 4.4 needs a few more of the patches listed on https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux- stable.git/log/drivers/scsi/storvsc_drv.c?h=v4.9.65 ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I see this issue too. It is easy to get with a 4.4 kernel if you have an SSD hooked up to the Windows host and then you connect the SSD to the Hyper-V VM via the SCSI controller in passthrough mode. Error messages will look like this: [ 20.476616] sd 3:0:0:0: [sdb] Synchronizing SCSI cache [

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Randomly we experience the same on: Ubuntu 16.04.03 LTS (GNU/Linux 4.4.0-98-generic x86_64) Hyper-V 2016 /Veeam 9.5 update2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V]

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The problem still here... Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-98-generic x86_64) on Hyper-V 2012 R2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The problem still here... Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-97-generic x86_64) on Hyper-V 2012 R2 ** Attachment added: "2017102001.JPG" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4977438/+files/2017102001.JPG -- You received this bug notification because you

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

People are working on this issue: e.g. it looks the patch may work around it: https://patchwork.kernel.org/patch/10012603/ (it would be great if somebody can test the patch) Long will send one more patch: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1517902.html -- You

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

We have the same problems with Gen1 VMs on Hyper-V Cluster Windows 2016 Datacenter and Ubuntu 16.04.3 LTS 4.4.0-97. Backup is done via DPM 2016. As long hv-vss-daemon is active the VMs freeze during nighttime with a Out of Memory event. -- You received this bug notification because you are a

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

After "upgrading" (i. e. reinstall) to Ubuntu 17.04 server including the recommended packages from Microsoft my problems have disappeared. -- You received this bug notification because you are a member of Ubuntu Bugs, which is

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Same Problem... - Server 2012 R2 / Ubuntu 16.4.x with Kernel 4.4.0-62 (and virtual DVD- Drive) was fine for a long time with vm-backup via. Backup Exec. - Server 2012 R2 / Ubuntu 16.4.x with updated Kernel to 4.4.0-81 (and virtual DVD-Drive) was crashing a few minutes after vm-backup with

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

In our environment we're running windows 2016 datacenter with Ubuntu 16.04 VMs (latest kernel). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@fastlanejb are you on Windows Server 2012 R2 or 2016? Is your VM running some I/O intensive workload when the live backup happens? It looks you get the OOM issue every time you do the live backup? I'm digging into the issue, and trying to reproduce it first. -- You received this bug

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

For reference I've got this problem on Ubuntu 16.04 with the HWE kernel installed on VM's as well. I'd gone a long time using LXC and KVM, avoiding Hyper-V because of the VSS Read Only issue that took 2 years to fix. Noticed that was marked as fixed and almost straight away on first try of Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Forgot to add to the last post but Kernel is: Welcome to Ubuntu 16.04.3 LTS (GNU/Linux 4.10.0-32-generic x86_64) I've run the following commands on a clean install of Ubuntu 16.04 to upgrade it. apt-get install -y --install-recommends linux-virtual-hwe-16.04 apt-get install -y

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I read through the long bug log and found an interesting thing: In #36, Andrey Vertexx (vertexx) reported the issue was fixed by the kernel in #30, but later Andrey thought the same kernel couldn't work any more? In #47, #48, #54, #59 a lot of people , Aleksey (noirfry) , Khallaf (mkhallaf),

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Hi, We still experience this bug. We use Hyper-V 2012 and use Veeam to create VM backups (though this fact might be irrelevant). We upgraded our Ubuntu 14.04 to the latest xenial kernel (4.4.0-91) and still experience the VM hanging/freezing/stacktracing regularly directly after backup. Sometimes

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

On the console screen they log out the following before they completely lock up. sd 0:0:1:1 [sdc] Asking for cache data failed sd 0:0:1:1 [sdc] Assuming drive cache: write through Dev sdc: unable to read RDB block 0 Dev sdc unable to read RDB block 0 Dev sdc unable to read RDB block 0 INFO: task

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Second server log ** Attachment added: "Server2.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4916177/+files/Server2.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Unfortnately some of my machines with 4.4.0-83 are still freezing up when they do a hyper-v backup. I will attach the syslog. ** Attachment added: "Server1 freeze" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4916176/+files/Server1.txt -- You received this bug

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I have updated three virtual machines to 4.4.0-83, two of them have attached physical disks. The machines with physical drives will not complete the startup process (example included). The machine without physical drives boots fine. ** Attachment added: "hc_2017_07_07_16.png"

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Great, thanks for the update Andrey. Can other also affected by this bug test the 4.4.0-83 kernel? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I have NO probles with VM migration or backup with 4.4.0-83 kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Kernel 4.4.0-67.88~lp1679898Commitb06640ee040e34 (Comment #119) is NOT running out of memory. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I built the next test kernel, up to the following commit: b06640ee040e347f122d0e885383da3efdb15ccd The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1679898/b06640ee040e347f122d0e885383da3efdb15ccd Can you test that kernel and report back if it has the bug or not? I

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

test kernel 4.4.0-67.88~lp1679898Commitdf0a1b9cce531 works. Tested it 5 times and it does not run out of memory but it does temporarily detect 7 new disks (where as 4.4.0-66 only detected 3 new disks) In the original 4.4.0-67 the extra/fake disks are detected and the extra /dev/sd* device files

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I can confirm that 4.4.0-66 does NOT crash and that 4.4.0-67 does indeed crash with out of memory errors. I think I should say that I tried doing a VSS backup with 4.4.0-66 5 times and it didn't crash on any of them but it did log worrying messages (see attachment) which are very similar to what

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

While waiting for test results requested in comment #115, I started the bisect between 4.4.0-66 and 4.4.0-67. I built the first test kernel, up to the following commit: df0a1b9cce531e1718dbb966b1e0075b3667598f The test kernel can be downloaded from:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I thinks it is best to perform a kernel bisect, especially since this bug still exits in the mainline kernel. To confirm we have a good starting version, can the following two kernels be tested: 4.4.0-66: https://launchpad.net/~canonical-kernel-security-team/+archive/ubuntu/ppa/+build/11043520

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The kernel in http://kernel.ubuntu.com/~jsalisbury/lp1679898/ still crashes for me. The 4.12-rc4 kernel also crashes for me (while using the hv_vss_daemon from 4.4.0-79) The 4.4.71 kernel does not crash for me (while using the hv_vss_daemon from 4.4.0-79) but the VSS daemon does not log

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Can folks affected by this bug test the following kernel, since it seemed to resolve the bug for the original bug reporter: http://kernel.ubuntu.com/~jsalisbury/lp1679898/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Yes, unfortunately still seeing this on 4.4.79. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The 4.4.71 and 4.12-rc4 don't have linux-cloud-tools packages so when you boot it's not running the hv_vss_daemon. Is it valid to just run hv_vss_daemon from the 4.4.0-79 package? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The following commit has been in Xenial updates for a few versions: scsi: storvsc: Workaround for virtual DVD SCSI version If folks are still hitting this bug, then that commit is not the fix. We should probably perform a bisect to identify the commit that introduced this bug. Before

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Changed in: linux (Ubuntu Xenial) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

same problem here -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To manage

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Is there any update on when this might be released? I've experienced this in -78 as well, but the status has been 'Fix Committed' for some time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Hi Andrey Revert kernel on this specific ubuntu version inside hyper-v is a little bit tricky once at least on my VM´s i´m unable to access pre-boot grub menu. To accomplish this task i changed /etc/default/grub file using this article as reference:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I think I need help to load the old kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I tried to boot up with kernel 73 (From #30). But VM is still loaded with 78 kernal. A don't know how to boot with older kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@Andrey Vertexx, It sounded like the test kernel I posted in comment #30 did in fact resolve the bug for you. Can you retest that kernel to see if that is the case? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Andrey, try an older kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I can't believe what bug infects only 13 other people! It is very important issue. I can't migrate or backup my servers without stop it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

The VM randomly crash during VSS Backup -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Other VM. LiveMigration with error and VM freeze..( ** Attachment added: "2017051701.PNG" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4878228/+files/2017051701.PNG -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Hi. I have tried to backup my VM after 4.4.0-78 kernel update. It is fail! My VM crashes with kernel panic error and out of memory error. ** Description changed: Description:Ubuntu 14.04.5 LTS Release:14.04 Hi, after installing kernel 4.4.0-67 or later I cannot backup my

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@Andrey Vertexx, the Xenial kernel is now at 4.4.0-78. Can you apply the latest updates and see if the bug still exists? Since you are the original bug reporter, if the latest updates resolves the bug for you, it might be best to open new bugs for others. -- You received this bug notification

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I'm having the same problems and 4.4.0-77 does not fix the problem. I also tested 4.8.0-51 and 4.10.0-20 and they also does not fix the problem. What I've noticed occurring during the VSS Freeze/Thaw events is that the VM detects extra disks (see attachment) (which seem to be them same as the

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Link to kernel? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To manage

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I still have systems that are completely locking up when a hyper-v backup is taken even with kernel 4.4.0-77. I'll attach the syslog from one. I also have systems that are not locking up but displaying things like '[sdc] asking for cache data failed', '[sdc] assuming drive cache: write through',

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Sure -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To manage notifications about

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Commit 3b7f05cbced4 is in the Ubuntu-4.4.0-77 kernel. Can you test that kernel to confirm it resolves this bug? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Any news about fix? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To manage

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I multiple hard drives and a DVD drive (no cd image attached) all on a single SCSI controller. The machine(s) are freezing up when taking a hyper-v backup. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

Re: [Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I wanted to detail that I had the DVD drive on a separate SCSI controller so I just removed the controller not just the DVD drive. Maybe this is different. On May 1, 2017 9:50 AM, "Werner Reinersmann" <1679...@bugs.launchpad.net> wrote: > I can confirm the problem with kernel 4.4.0-75-generic.

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I can confirm the problem with kernel 4.4.0-75-generic. Removing the virtual dvd drive does not resolve the problem. I have two virtual machines with attached pysical hard drives - perhaps this is another cause for the problem? It is not possible for me to remove the physical drives. Interesting

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I'm fully up to date on Ubuntu 16.04.2 with kernel 4.4.0-75-generic. On some machines I'm still experiencing kernel panics which results in the machine being completely locked up when hyper-v backups occur. Was hoping this would be fixed in 75 :( :( -- You received this bug notification

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I have very small size vhdx on VM. 40-60 Gb. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I´ve been done some tests and one of our vm´s with Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-63-generic x86_64) without cd rom still failing after kernel downgrade from 4.4.0-72 and CDROM removal during backup. I believe that there is some relation with Size of data inside of VHD´s because this

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Removing the virtual DVD Device does not fix the problem! My VM without virtual DVD already. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Linux hq-srv-web-02 4.4.0-75-generic #96~14.04.1-Ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Today i have tried to backup my VM after kernel update. It is fail! My VM crashes with kernel panic error and out of memory error. ** Attachment added: "2017042601.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4868047/+files/2017042601.png ** Description

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Tonight my Ubuntu VM crashed again during VSS Backup ** Attachment added: "boot_dump.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4865385/+files/boot_dump.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@sc-pulsion Oh, yes, only the checkpoint sub-component, I got confused it for "data- exchange". Sorry. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@sc-pulsion I never enable integration service with Linux guests: I never trust the host :D :D But that also means that disabling integration service in itself was not enough - at least for me! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

I can confirm I have this issue as well on 14.04 and 16.04 with the latest kernel. Removing the DVD drive does fix the issue, however if they are online it also causes the VMs to run out of memory, same as if they are being backed up. I used the following PowerShell script to remove all drives

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Just to confirm: Ubuntu 16.10 4.8.0-46-generic on Hyper-V Gen 2 VM on Windows Server 2016. Will check if removing the DVD drive will fix it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Same deal as above in a fresh 16.04 install on 4.8.0-46. Removing the virtual DVD seems to be a functional workaround in the meantime. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@khallaf The VM crash randomly during VSS Backup like vertexx's screenshot in post #3 - Whether the virtual DVD is connected or not ** Attachment added: "boot-dump.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679898/+attachment/4861270/+files/boot-dump.txt -- You received

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@jumpiem This could be a different reason. What happens at boot? Can you describe the sequence (or provide screenshots)? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V]

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Removing the virtual SCSI DVD Device does not fix the problem for me. Ubuntu 16.04.2 VM Gen2 Kernel 4.4.0-72 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@febcrash Try this: https://technet.microsoft.com/en- us/itpro/powershell/windows/hyper-v/remove-vmdvddrive Best of luck! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V]

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

ok but i have ~90 servers :/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 To

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@febcrash Instead of applying a half-baked fixed kernel (comment 30), remove virtual DVD drive from all your 15 servers. They will work! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

WT* I too removed the virtual DVD drive and it boot like a charm. heck-up! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

@febcash Instead of applying a half-baked fixed kernel (comment 30), remove virtual DVD drive from all your 15 servers. They will work! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title:

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Same issue on 15 servers :/ When 4.4.0-73.94 kernel will be pushed on updates repository? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1679898 Title: [Hyper-V] Ubuntu VM crash during Hyper-V

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

Kernel 4.4.0-72 is foobar'd (at least) on Hyper-V, I have a VM that I checkpoint every single day, the last working checkpoint was on 2014.03.27. When I apply checkpoint and update, I hi the same issue: boot stops for long at: random: nonblocking pool is initialized ...then it spits lots of

[Bug 1679898] Re: [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72

** Summary changed: - [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-67 or later + [Hyper-V] Ubuntu VM crash during Hyper-V backup or live migration after installing kernel 4.4.0-72 -- You received this bug notification because you are a member