[libvirt-users] Urgent: virsh - change-media run into a promptly close of libvirt

[Holger Schranz]

Ups ... my fault ...

libvirtd instead libvirt ....


etcsvms5:/var/lib/systemd/coredump # coredumpctl info libvirtd
            PID: 10177 (libvirtd)
            UID: 0 (root)
            GID: 0 (root)
         Signal: 11 (SEGV)
      Timestamp: Tue 2017-11-14 10:11:32 CET (9h ago)
   Command Line: /usr/local/sbin/libvirtd -d
     Executable: /usr/local/sbin/libvirtd
  Control Group: /
          Slice: -.slice
        Boot ID: 4d5f74eefb0244c2bc3b2c99986dcee8
     Machine ID: beeb301fe87a14b2eabdb6a75a01cbae
       Hostname: etcsvms5
       Coredump: 
/var/lib/systemd/coredump/core.libvirtd.0.4d5f74eefb0244c2bc3b2c99986dcee8.10177.1510650692000000.xz
        Message: Process 10177 (libvirtd) of user 0 dumped core.
etcsvms5:/var/lib/systemd/coredump # coredumpctl dump libvirtd
            PID: 10177 (libvirtd)
            UID: 0 (root)
            GID: 0 (root)
         Signal: 11 (SEGV)
      Timestamp: Tue 2017-11-14 10:11:32 CET (9h ago)
   Command Line: /usr/local/sbin/libvirtd -d
     Executable: /usr/local/sbin/libvirtd
  Control Group: /
          Slice: -.slice
        Boot ID: 4d5f74eefb0244c2bc3b2c99986dcee8
     Machine ID: beeb301fe87a14b2eabdb6a75a01cbae
       Hostname: etcsvms5
       Coredump: 
/var/lib/systemd/coredump/core.libvirtd.0.4d5f74eefb0244c2bc3b2c99986dcee8.10177.1510650692000000.xz
        Message: Process 10177 (libvirtd) of user 0 dumped core.
Refusing to dump core to tty.
etcsvms5:/var/lib/systemd/coredump #

Am 14.11.2017 um 19:15 schrieb Holger Schranz:
> Hi Daniel,
>
> here are any informations.
>
> A little bit strange, coredumpctl showthe libvirtd.
> coredumpctl dump libvirt and info libvirt  no information.
>
> Best regards
>
> Holger
>
> -------------------------------------------------------------------------- 
>
>
> etcsvms5:/var/adm # coredumpctl
> TIME                            PID   UID   GID SIG PRESENT EXE
> Tue 2017-11-07 16:22:57 CET     485     0     0  11 /usr/sbin/plymouthd
> Wed 2017-11-08 14:44:12 CET     485     0     0  11 /usr/sbin/plymouthd
> Tue 2017-11-14 10:11:37 CET   10177     0     0  11 * 
> /usr/local/sbin/libvirtd
> etcsvms5:/var/adm # coredumpctl --help
>
> etcsvms5:/var/adm # coredumpctl dump libvirt
> No match found.
> etcsvms5:/var/adm # coredumpctl info libvirt
> No coredumps found.
> etcsvms5:/var/adm #
>
> etcsvms5:/var/adm # coredumpctl info
> .
> .
>            PID: 10177 (libvirtd)
>            UID: 0 (root)
>            GID: 0 (root)
>         Signal: 11 (SEGV)
>      Timestamp: Tue 2017-11-14 10:11:32 CET (8h ago)
>   Command Line: /usr/local/sbin/libvirtd -d
>     Executable: /usr/local/sbin/libvirtd
>  Control Group: /
>          Slice: -.slice
>        Boot ID: 4d5f74eefb0244c2bc3b2c99986dcee8
>     Machine ID: beeb301fe87a14b2eabdb6a75a01cbae
>       Hostname: etcsvms5
>       Coredump: 
> /var/lib/systemd/coredump/core.libvirtd.0.4d5f74eefb0244c2bc3b2c99986dcee8.10177.1510650692000000.xz
>        Message: Process 10177 (libvirtd) of user 0 dumped core.
> etcsvms5:/var/adm #
>
> Am 14.11.2017 um 18:51 schrieb Daniel P. Berrange:
>> On Tue, Nov 14, 2017 at 06:47:04PM +0100, Holger Schranz wrote:
>>> Hello,
>>>
>>> I use the virsh change-media command and since the combination of:
>>>
>>> etcsvms5:/kvm/CS8400/M1 # virsh version
>>> Compiled against library: libvirt 3.9.0
>>> Using library: libvirt 3.9.0
>>> Using API: QEMU 3.9.0
>>> Running hypervisor: QEMU 2.10.1
>>>
>>> etcsvms5:/kvm/CS8400/M1 #
>>>
>>> I got the following problem:
>>>
>>> ----------------------
>>>
>>> etcsvms5:/kvm/CS8400/M1 # virsh change-media S5VCS84M1-VLP0 hdc --eject
>>> Successfully ejected media.
>>>
>>> etcsvms5:/kvm/CS8400/M1 # virsh change-media S5VCS84M1-VLP0 hdc
>>> /home/kvm/etcsdvmb/Medien/V7.0A/CS_licenses/key-cd_VCS85FTSVTL.iso 
>>> --insert
>>> error: Disconnected from qemu:///system due to end of file
>>> error: Failed to complete action insert on media
>>> error: End of file while reading data: Input/output error
>>>
>>> ----------------------
>>>
>>> journalctl -b | less shows the following:
>>>
>>> Nov 14 10:11:32 etcsvms5 kernel: libvirtd[10178]: segfault at 10 ip
>>> 00007f49ff969170 sp 00007f4a069cb940 error 4 in
>>> libvirt_driver_qemu.so[7f49ff8d9000+172000]
>>> Nov 14 10:11:37 etcsvms5 systemd-coredump[42152]: Process 10177 
>>> (libvirtd)
>>> of user 0 dumped core.
>> Seeing the stack trace of libvirtd will be key to identifying the 
>> bug. With
>> any luck systemd-coredump will have captured that. So can you run 
>> 'coredumpctl'
>> to get the stack trace it saved.
>>
>> Then I'd suggest filing a bugzilla ticket against libvirt with the 
>> resulting
>> info so we have a record of it.
>>
>> Regards,
>> Daniel
>
>
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