[Users] Issues starting hosted engine VM

Dafna Ron dron at redhat.com
Mon Jan 20 11:22:21 UTC 2014


Itamar, was this only applied for hosted engine or was this added or 
planed to be added to all engine setups?


On 01/20/2014 11:19 AM, Andrew Lau wrote:
> Hi,
>
> That bug seems to be private :(
>
> I'm interested also to hear about this feature, as with 3.3.2 I had my 
> gluster vms go into paused state quite a few times and they actually 
> couldn't be resumed at all, they needed to be forced off and back on.
>
> On Mon, Jan 20, 2014 at 10:13 PM, Dafna Ron <dron at redhat.com 
> <mailto:dron at redhat.com>> wrote:
>
>     interesting... :) so this is now configurable...
>     what happens if qemu fails to start the vm (this happens sometimes
>     - mostly on file type storage). do we have a re-try or a specific
>     error telling the use that the activation failed and manual
>     intervention is required?
>
>
>
>     On 01/20/2014 11:02 AM, Leonid Natapov wrote:
>
>         All vms. Check this PRD:
>         https://bugzilla.redhat.com/show_bug.cgi?id=723055
>
>
>         ----- Original Message -----
>         From: "Dafna Ron" <dron at redhat.com <mailto:dron at redhat.com>>
>         To: "Leonid Natapov" <lnatapov at redhat.com
>         <mailto:lnatapov at redhat.com>>
>         Cc: "Andrew Lau" <andrew at andrewklau.com
>         <mailto:andrew at andrewklau.com>>, "Yedidyah Bar David"
>         <didi at redhat.com <mailto:didi at redhat.com>>, "users"
>         <users at ovirt.org <mailto:users at ovirt.org>>
>         Sent: Monday, January 20, 2014 12:44:46 PM
>         Subject: Re: [Users] Issues starting hosted engine VM
>
>         On 01/20/2014 10:38 AM, Leonid Natapov wrote:
>
>             1.hosted-engine --vm-start should start engine vm. There
>             was no problem with it when I tested it.
>             2.hosted-engine --vm-start-paused was added for the case
>             when something is wrong with engine vm and it can't start
>             and requires user intervention. For example in case of
>             kernel panic.
>             User can start engine vm in paused mode ,connect to it and
>             try to fix the problem by booting in single user mode ,etc.
>             3.When the connectivity to shared storage is lost engine
>             vm becomes paused. VM should be automatically unpaused
>             after connectivity resumes (we introduced this feature in
>             3.3) but in case of NFS it could take quite time.so may be
>             we should add something like --vm-resume in order to resume
>
>         Are we talking only on the hosted engine vm or all other vm's?
>         if I have
>         other vm's they will also stop, will they be auto started as well?
>
>             the engine vm manually.
>
>             Thanks,
>             Leonid.
>
>
>             ----- Original Message -----
>             From: "Andrew Lau" <andrew at andrewklau.com
>             <mailto:andrew at andrewklau.com>>
>             To: dron at redhat.com <mailto:dron at redhat.com>
>             Cc: "Leonid Natapov" <lnatapov at redhat.com
>             <mailto:lnatapov at redhat.com>>, "Yedidyah Bar David"
>             <didi at redhat.com <mailto:didi at redhat.com>>, "users"
>             <users at ovirt.org <mailto:users at ovirt.org>>
>             Sent: Monday, January 20, 2014 12:28:15 PM
>             Subject: Re: [Users] Issues starting hosted engine VM
>
>             It was paused due to the connection loss to the NFS
>             server, I would assume
>             once the connection is restored it could attempt to
>             restore it? But I can
>             try dig up the vdsm logs if you want, they would only be a
>             few hours old
>
>             I think having an option like --vm-resume would at least
>             hide the reason of
>             having to dig into virsh and messing with authentication
>             at the very least.
>
>             On Mon, Jan 20, 2014 at 9:23 PM, Dafna Ron
>             <dron at redhat.com <mailto:dron at redhat.com>> wrote:
>
>                 the question is what was the vm paused on... this can
>                 be found in the qemu
>                 vm log.
>                 if the vm is paused it will not be auto started - so I
>                 am not sure what
>                 you expect to change? virsh requires authentication
>                 regardless to hosted
>                 engine :)
>                 Leonid, did you do any testing there?
>
>
>                 On 01/20/2014 10:13 AM, Andrew Lau wrote:
>
>                     I have opened this BZ 1055461 anyway just in case
>
>
>                     On Mon, Jan 20, 2014 at 8:33 PM, Andrew Lau
>                     <andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com><mailto:
>                     andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>> wrote:
>
>                           I was more interested in how the score
>                     process would be
>                           calculated, the vm-status option considered
>                     the VM in a bad state.
>
>                           I left it for a few minutes and nothing
>                     seemed to have changed, I
>                           think it relates to hosted engine as virsh
>                     requires
>                           authentication. Should I still open a bz?
>
>                           Cheers,
>                           Andrew.
>
>                           On Jan 20, 2014 7:48 PM, "Dafna Ron"
>                     <dron at redhat.com <mailto:dron at redhat.com>
>                           <mailto:dron at redhat.com
>                     <mailto:dron at redhat.com>>> wrote:
>
>                               I am not sure this is a hosted engine
>                     question as much as a
>                               qemu question.
>                               qemu-kvm will not support auto start of
>                     vm's after EIO because
>                               of remote possibility of corruption.
>
>                               On 01/20/2014 05:46 AM, Andrew Lau wrote:
>
>                                   Hi,
>
>                                   Quick question, in the scenario eg.
>                     the NFS server becomes
>                                   unreachable and the hosted-engine
>                     goes into a paused
>                                   state. Will other hosts attempt to
>                     bring it back up?
>                                   Should there be a command eg.
>                      hosted-engine --vm-resume ?
>
>                                   When this happened, I manually
>                     forced it to resume using virsh
>
>
>                                   On Sun, Jan 19, 2014 at 7:21 PM,
>                     Yedidyah Bar David
>                                   <didi at redhat.com
>                     <mailto:didi at redhat.com> <mailto:didi at redhat.com
>                     <mailto:didi at redhat.com>>
>                                   <mailto:didi at redhat.com
>                     <mailto:didi at redhat.com> <mailto:didi at redhat.com
>                     <mailto:didi at redhat.com>>>> wrote:
>
>                                       Thanks a lot for your efforts
>                     and the report!
>                                       --     Didi
>
>                      ------------------------------
>                     ------------------------------------------
>
>                                           *From: *"Andrew Lau"
>                     <andrew at andrewklau.com <mailto:andrew at andrewklau.com>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>
>                                          
>                     <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>
>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>>>
>                                           *To: *"users"
>                     <users at ovirt.org <mailto:users at ovirt.org>
>                                   <mailto:users at ovirt.org
>                     <mailto:users at ovirt.org>> <mailto:users at ovirt.org
>                     <mailto:users at ovirt.org>
>
>                                   <mailto:users at ovirt.org
>                     <mailto:users at ovirt.org>>>>
>                                           *Sent: *Saturday, January
>                     18, 2014 3:20:22 PM
>                                           *Subject: *Re: [Users]
>                     Issues starting hosted
>                                   engine VM
>
>
>                                           I believe I found the issue
>                     and have reported it here
>                     https://bugzilla.redhat.com/show_bug.cgi?id=1055059
>
>                                           On Sat, Jan 18, 2014 at
>                     11:33 PM, Andrew Lau
>                                           <andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>
>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>>> wrote:
>
>                                               The interesting thing -
>                     trying it with the
>                                   paused option
>                                               vdsm seems to create the VM
>
>                                               hosted-engine
>                     --vm-start-paused
>
>                                               vdsm.log
>                     http://www.fpaste.org/69604/13900482/
>
>                                               But I'm not sure how to
>                     then proceed to
>                                   "resume" it.
>
>                                               On Sat, Jan 18, 2014 at
>                     10:23 PM, Andrew Lau
>                                               <andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>
>
>                                   <mailto:andrew at andrewklau.com
>                     <mailto:andrew at andrewklau.com>>>> wrote:
>
>                                                   Hi,
>
>                                                   With the great help
>                     from sbonazzo, I
>                                   managed to step
>                                                   past the initial bug
>                     with the
>                                   hosted-engine-setup but
>                                                   appear to have run
>                     into another show stopper.
>
>                                                   I ran through the
>                     install process
>                                   successfully up to
>                                                   the stage where it
>                     completed and the
>                                   engine VM was to
>                                                   be shutdown. (The
>                     engine has already been
>                                   installed on
>                                                   the VM and the host
>                     has been connected to
>                                   the engine).
>
>                                                   The issue starts
>                     here that the host finds
>                                   itself not
>                                                   able to start the VM
>                     up again.
>
>                                                   VDSM Logs:
>                     http://www.fpaste.org/69592/00427141/
>                     ovirt-hosted-engine-ha agent.log
>                     http://www.fpaste.org/69595/43609139/
>
>                                                   It seems to keep
>                     failing to start the VM..
>                                   when I
>                                                   restart the agent I
>                     can see the score drop
>                                   to 0 after
>                                                   3 boot attempts.
>                      The interesting thing
>                                   seems to be in
>                                                   the VDSM Logs
>                     "'Virtual machine does not
>                                   exist',
>                                                   'code': 1}}"
>
>                                                   I'm not sure where
>                     else to look. Suggestions?
>
>                                                   Cheers,
>
>                                                   Andrew
>
>
>
>
>                     _______________________________________________
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>                     <mailto:Users at ovirt.org <mailto:Users at ovirt.org>>
>                                   <mailto:Users at ovirt.org
>                     <mailto:Users at ovirt.org> <mailto:Users at ovirt.org
>                     <mailto:Users at ovirt.org>>>
>
>                     http://lists.ovirt.org/mailman/listinfo/users
>
>
>
>
>                                       --     Didi
>
>
>
>
>                                  
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>
>
>
>                               --         Dafna Ron
>
>
>
>                 --
>                 Dafna Ron
>
>
>
>
>     -- 
>     Dafna Ron
>
>


-- 
Dafna Ron



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