10:37 a.m.
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On 11 Apr 2014, at 09:00, Koen Vanoppen wrote:
another
>
yes, since 3.3 we have the autoresume feature
> Thanks,
> michal
>
Kind Regards,
> Koen
> 2014-04-04 13:52 GMT+02:00
Koen Vanoppen < vanoppen.koen(a)gmail.com =
:
> So... It is possible for a
fully automatic migration of the VM to = another
>
Kind Regards,
> Koen
> 2014-04-03 16:53 GMT+02:00
Koen Vanoppen < vanoppen.koen(a)gmail.com =
:
> ---------- Forwarded message ----------
> From: "Doron Fediuck" < dfediuck(a)redhat.com > Date: Apr 3, 2014 4:51 PM
> Subject: Re: [Users] HA
> To: "Koen Vanoppen"
< vanoppen.koen(a)gmail.com > Cc: "Omer Frenkel"
< ofrenkel(a)redhat.com >, < users(a)ovirt.org >, = "Federico
<blockquote class=3D"gmail_quote"
style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; =
border-left-width: 1px; border-left-color: rgb(204, 204, 204); =
border-left-style: solid; padding-left: 1ex; position: static; z-index: =
auto; "><div class=3D""><br
<br ----- Original Message
-----<br > From: "Koen
Vanoppen" <<a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a>><br=
> To: <a
href=3D"mailto:users@ovirt.org">users@ovirt.org</a><br </div><div class=3D"">> Sent:
Tuesday, April 8, 2014 3:41:02 PM<br >
Subject: Re: [Users] HA<br ><br </div><div class=3D"">> Or with
other words, the SPM and the VM =
should move almost immediate after<br >
the storage connections on the hypervisor are gone. I know, I'm =
asking to<br > much maybe, but we would be
very happy :-) :-).<br ><br > So sketch:<br
><br > Mercury1 SPM<br > Mercury 2<br
><br > Mercury1 loses both fibre
connections --> goes in =
non-operational and the VM<br > goes in paused state and
stays this way, until I manually reboot =
the host so<br > it fences.<br ><br >
What I would like is that when mercury 1 loses both fibre =
connections. He<br > fences immediate so the
VM's are moved also almost instantly... If =
this is<br > possible... :-)<br ><br >
Kind regards and thanks for all the help!<br
><br <br
</div>Michal, is there a vdsm hook for vm moved to pause?<br if so, you could send KILL to it, and engine will identify vm
was =
killed+HA,<br so it will be restarted, and no need
to reboot the host, it will stay in =
non-operational until storage is =
fixed.<br></blockquote></div></div></blockquote><div><br></div>you
have =
to differentiate - if only the VMs would be paused, yes, you can do =
anything (also change the err reporting policy to not pause the =
VM)</div><div>but if the host becomes non-operational then it simply =
doesn't work, vdsm got stuck somewhere (often in get blk device =
stats)</div><div>proper power management config should fence =
it</div><div><br></div><div>Thanks,</div><div>michal</div><div><br><blockq=
uote type=3D"cite"><div class=3D"gmail_extra"><div =
class=3D"gmail_quote"><blockquote class=3D"gmail_quote" =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, =
204, 204); border-left-style: solid; padding-left: 1ex; position: =
static; z-index: auto; " <div><div
class=3D"h5"><br ><br ><br >
2014-04-08 14:26 GMT+02:00 Koen Vanoppen < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a>
> =
:<br ><br
><br ><br > Ok,<br >
Thanx already for all the help. I adapted some things for quicker =
respons:<br > engine-config --get =
FenceQuietTimeBetweenOperationsInSec-->180<br >
engine-config --set FenceQuietTimeBetweenOperationsInSec=3D60<br ><br >
engine-config --get =
StorageDomainFalureTimeoutInMinutes-->180<br >
engine-config --set StorageDomainFalureTimeoutInMinutes=3D1<br ><br >
engine-config --get SpmCommandFailOverRetries-->5<br > engine-config --set
SpmCommandFailOverRetries<br ><br > engine-config --get
SPMFailOverAttempts-->3<br >
engine-config --set SPMFailOverAttempts=3D1<br
><br > engine-config --get
NumberOfFailedRunsOnVds-->3<br >
engine-config --set NumberOfFailedRunsOnVds=3D1<br
><br > engine-config --get
vdsTimeout-->180<br > engine-config --set
vdsTimeout=3D30<br ><br > engine-config --get
VDSAttemptsToResetCount-->2<br >
engine-config --set VDSAttemptsToResetCount=3D1<br
><br > engine-config --get
TimeoutToResetVdsInSeconds-->60<br >
engine-config --set TimeoutToResetVdsInSeconds=3D30<br
><br > Now the result of this is
that when the VM is not running on the =
SPM that it<br > will migrate before going
in pause mode.<br > But when we tried it, when
the vm is running on the SPM, it get's =
in paused<br > mode (for safety reasons, I
know ;-) ). And stays there until the =
host gets<br > MANUALLY fenced by
rebooting it. So now my question is... How can I =
make the<br > hypervisor fence (so
reboots, so vm is moved) quicker?<br
><br > Kind regards,<br ><br >
Koen<br ><br ><br >
2014-04-04 16:28 GMT+02:00 Koen Vanoppen < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a>
> =
:<br ><br
><br ><br ><br
><br > Ja das waar. Maar was
aan't rijden... Dus ik stuur maar door dan =
:-). Ik heb<br > reeds de time out
aangepast. Die stond op 5 min voor hij den time =
out ging<br > geven. Staat nu op 2
min<br > On Apr 4, 2014 4:14 PM,
"David Van Zeebroeck" <<br >
<a =
href=3D"mailto:david.van.zeebroeck@brusselsairport.be">david.van.zeebroeck=
@brusselsairport.be</a> > wrote:<br
><br ><br ><br
><br ><br ><br
><br ><br > Ik heb ze ook he<br
><br ><br ><br >
Maar normaal had de fencing moeten werken als ik het zo lees<br ><br >
Dus daar is ergens iets verkeerd gelopen zo te lezen<br
><br ><br ><br >
From: Koen Vanoppen [mailto: <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
]<br > Sent: vrijdag 4 april 2014 16:07<br > To: David Van Zeebroeck<br > Subject: Fwd: Re: [Users] HA<br ><br
><br ><br ><br
><br ><br ><br
><br ><br ><br
><br > David Van
Zeebroeck<br ><br > Product Manager Unix Infrastructure<br ><br >
Information & Communication Technology<br
><br > Brussels Airport
Company<br ><br > T <a
href=3D"tel:%2B32%20%280%292%20753%2066%2024" =
value=3D"+3227536624">+32 (0)2 753 66 24</a><br ><br >
M <a href=3D"tel:%2B32%20%280%29497%2002%2017%2031" =
value=3D"+32497021731">+32 (0)497 02 17 31</a><br ><br >
<a =
href=3D"mailto:david.van.zeebroeck@brusselsairport.be">david.van.zeebroeck=
@brusselsairport.be</a><br
><br ><br ><br >
<a href=3D"http://www.brusselsairport.be/" =
target=3D"_blank">www.brusselsairport.be</a><br ><br
><br ><br ><br
><br ><br ><br
</div></div>> FOLLOW US ON:<br <div
class=3D"">><br
><br ><br ><br
><br ><br ><br >
Company Info<br ><br ><br
><br ><br ><br
><br > ---------- Forwarded
message ----------<br > From: "Michal
Skrivanek" < <a =
href=3D"mailto:michal.skrivanek@redhat.com">michal.skrivanek@redhat.com</a=
> ><br > Date: Apr 4, 2014 3:39
PM<br > Subject: Re: [Users]
HA<br > To: "Koen
Vanoppen" < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
><br > Cc: "ovirt-users
Users" < <a =
href=3D"mailto:users@ovirt.org">users@ovirt.org</a> ><br ><br
><br ><br ><br
><br ><br > On 4 Apr 2014, at 15:14, Sander Grendelman
wrote:<br ><br ><br
><br ><br ><br
><br > Do you have power
management configured?<br ><br ><br >
Was the "failed" host fenced/rebooted?<br
><br ><br ><br
><br ><br > On Fri, Apr 4, 2014 at 2:21 PM, Koen Vanoppen <
<a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
><br > wrote:<br ><br
><br > So... It is possible for a
fully automatic migration of the VM to =
another<br > hypervisor in case Storage
connection fails?<br ><br ><br >
How can we make this happen? Because for the moment, when we tested =
the<br > situation they stayed in
pause state.<br ><br ><br >
(Test situation:<br ><br </div>> * Unplug the 2 fibre
cables from the =
hypervisor<br > *
VM's go in pause state<br > *
VM's stayed in pause state until the failure was =
solved<br <div><div
class=3D"h5">><br
><br ><br ><br
><br > as said before, it's
not safe hence we (try to) not migrate =
them.<br ><br ><br >
They only get paused when they actually access the storage which =
may not be<br > always the case. I.e. the
storage connection is severed, host =
deemed<br > NonOperational and VMs are
getting migrated from it, then some of =
them will<br > succeed if they didn't
access that "bad" storage =85 the paused VMs =
will<br > remain (mostly, it can
still happen that they appear paused =
migrated on<br > other host when the disk
access occurs only at the last stage of =
migration)<br ><br ><br
><br ><br ><br
><br ><br ><br >
so in other words, if you want to migrate the VMs without =
interruption it's<br > not sometimes
possible<br ><br ><br >
if you are fine with the VMs restarted in short time on other host =
then power<br > management/fencing will
help here<br ><br ><br
><br ><br ><br >
Thanks,<br ><br ><br >
michal<br ><br ><br
><br ><br ><br
><br > )<br ><br
><br ><br ><br >
They only returned when we restored the fiber connection to the =
Hypervisor=85<br ><br ><br
><br ><br ><br >
yes, since 3.3 we have the autoresume feature<br
><br ><br ><br
><br ><br > Thanks,<br
><br ><br > michal<br
><br ><br ><br
><br ><br ><br
><br ><br ><br
><br ><br ><br
><br ><br ><br >
Kind Regards,<br ><br > Koen<br
><br ><br ><br
><br ><br ><br
><br ><br > 2014-04-04 13:52 GMT+02:00 Koen Vanoppen <
<a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
>:<br ><br ><br >
So... It is possible for a fully automatic migration of the VM to =
another<br > hypervisor in case Storage
connection fails?<br ><br ><br >
How can we make this happen? Because for the moment, when we tested =
the<br > situation they stayed in
pause state.<br ><br ><br >
(Test situation:<br ><br </div></div>> * Unplug
the 2 fibre cables from the =
hypervisor<br > *
VM's go in pause state<br > *
VM's stayed in pause state until the failure was =
solved<br <div
class=3D"HOEnZb"><div class=3D"h5">><br ><br >
)<br ><br
><br ><br ><br >
They only returned when we restored the fiber connection to the =
Hypervisor...<br ><br ><br >
Kind Regards,<br ><br > Koen<br
><br ><br ><br
><br ><br > 2014-04-03 16:53 GMT+02:00 Koen Vanoppen <
<a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
>:<br ><br ><br
><br ><br ><br
><br ><br > ---------- Forwarded message ----------<br > From: "Doron Fediuck" < <a =
href=3D"mailto:dfediuck@redhat.com">dfediuck@redhat.com</a>
><br > Date: Apr 3, 2014 4:51
PM<br > Subject: Re: [Users]
HA<br ><br ><br >
To: "Koen Vanoppen" < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
><br > Cc: "Omer
Frenkel" < <a =
href=3D"mailto:ofrenkel@redhat.com">ofrenkel@redhat.com</a> >,
< =
<a href=3D"mailto:users@ovirt.org">users@ovirt.org</a> >, =
"Federico<br > Simoncelli" <
<a =
href=3D"mailto:fsimonce@redhat.com">fsimonce@redhat.com</a> >,
"Allon =
Mureinik" < <a =
href=3D"mailto:amureini@redhat.com">amureini@redhat.com</a><br > ><br
><br ><br ><br >
----- Original Message -----<br > > From: "Koen
Vanoppen" < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
><br > > To: "Omer
Frenkel" < <a =
href=3D"mailto:ofrenkel@redhat.com">ofrenkel@redhat.com</a> >,
<a =
href=3D"mailto:users@ovirt.org">users@ovirt.org</a><br > > Sent: Wednesday, April 2, 2014 4:17:36
PM<br > > Subject: Re:
[Users] HA<br > ><br > > Yes, indeed. I meant not-operational.
Sorry.<br > > So, if I
understand this correctly. When we ever come in a =
situation that<br > > we<br > > loose both storage connections on our
hypervisor, we will have =
to manually<br > > restore the
connections first?<br > ><br > > And thanx for the tip for speeding up thins
:-).<br > ><br > > Kind regards,<br > ><br >
> Koen<br > ><br > ><br >
> 2014-04-02 15:14 GMT+02:00 Omer Frenkel < <a =
href=3D"mailto:ofrenkel@redhat.com">ofrenkel@redhat.com</a> >
:<br > ><br >
><br > ><br > ><br >
><br > > ----- Original
Message -----<br > > > From:
"Koen Vanoppen" < <a =
href=3D"mailto:vanoppen.koen@gmail.com">vanoppen.koen@gmail.com</a> =
><br > > > To: <a
=
href=3D"mailto:users@ovirt.org">users@ovirt.org</a><br > > > Sent: Wednesday, April 2, 2014
4:07:19 PM<br > > > Subject:
[Users] HA<br > > ><br > > > Dear All,<br > > ><br >
> > Due our acceptance testing, we discovered something. =
(Document will<br > > >
follow).<br > > > When we
disable one fiber path, no problem multipath =
finds it way no<br > > >
pings<br > > > are
lost.<br > > > BUT when
we disabled both the fiber paths (so one of the =
storage domain<br > > >
is<br > > > gone on
this host, but still available on the other =
host), vms go in<br > > >
paused<br > > > mode...
He chooses a new SPM (can we speed this up?), =
put's the host in<br > > >
non-responsive (can we speed this up, more important) and =
the VM's stay<br > > >
on<br > > > Paused
mode... I would expect that they would be migrated =
(yes, HA is<br > ><br > > i guess you mean the host moves to
not-operational (in =
contrast to<br > >
non-responsive)?<br > > if so, the engine
will not migrate vms that are paused to do =
io error,<br > > because of data
corruption risk.<br > ><br > > to speed up you can look at the storage
domain monitoring =
timeout:<br > > engine-config
--get StorageDomainFalureTimeoutInMinutes<br >
><br > ><br > > > enabled) to the other host and
reboot there... Any =
solution? We are still<br > > > using
oVirt 3.3.1 , but we are planning a upgrade to 3.4 =
after the easter<br > > >
holiday.<br > > ><br > > > Kind Regards,<br > > ><br >
> > Koen<br > > ><br ><br >
Hi Koen,<br > Resuming from paused due to
io issues is supported (adding relevant =
folks).<br > Regardless, if you did not
define power management, you should =
manually<br > approve<br > source host was rebooted in order for migration to
proceed. =
Otherwise we risk<br > split-brain
scenario.<br ><br > Doron<br
><br ><br ><br
><br ><br ><br
><br ><br ><br >
_______________________________________________<br >
Users mailing list<br > <a
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br > <a
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/us... ><br
><br ><br ><br
><br >
_______________________________________________<br >
Users mailing list<br > <a
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br > <a
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/us... ><br
><br ><br ><br
><br ><br ><br
><br ><br >
_______________________________________________<br >
Users mailing list<br > <a
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br > <a
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/us... ><br
</div></div></blockquote></div><br></div _______________________________________________<br>Users
mailing =
list<br><a =
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br>http://lists.ovirt.=
org/mailman/listinfo/users<br></blockquote></div><br></body></html>=
--Apple-Mail=_0681B1A7-9C69-4ECE-A5B9-25C543F80270--
Hi All,
=20
Any news about this? DSM hook or anything?
Thanx!
=20
Kind regards
=20
=20
2014-04-09 9:37 GMT+02:00 Omer Frenkel <ofrenkel(a)redhat.com>:
=20
=20
----- Original Message -----
> From: "Koen Vanoppen" <vanoppen.koen(a)gmail.com > To: users(a)ovirt.org
> Sent: Tuesday, April 8, 2014 3:41:02 PM
> Subject: Re: [Users] HA
> Or with other words, the SPM and the VM should move
almost immediate =
after
> the storage connections on the hypervisor are gone. I know,
I'm =
asking to
> much maybe, but we would be very happy :-) :-).
> So sketch:
> Mercury1 SPM
> Mercury 2
> Mercury1 loses both fibre connections --> goes in
non-operational =
and the VM
> goes in paused state and stays this way, until I manually reboot
the =
host so
> it fences.
> What I would like is that when mercury 1 loses both fibre
=
connections. He
> fences immediate so the VM's are moved also almost
instantly... If =
this is
> possible... :-)
> Kind regards and thanks for all the help!
=20
Michal, is there a vdsm hook for vm moved to pause?
if so, you could send KILL to it, and engine will identify vm was =
killed+HA,
so it will be restarted, and no need to reboot the host, it will stay
=
in non-operational until storage is fixed.
you have to differentiate - if only the VMs would be paused, yes, you =
can do anything (also change the err reporting policy to not pause the =
VM)
but if the host becomes non-operational then it simply doesn't work, =
vdsm got stuck somewhere (often in get blk device stats)
proper power management config should fence it
Thanks,
michal
:
respons:
> engine-config --get
FenceQuietTimeBetweenOperationsInSec-->180
> engine-config --set FenceQuietTimeBetweenOperationsInSec=3D60
> engine-config --get
StorageDomainFalureTimeoutInMinutes-->180
> engine-config --set StorageDomainFalureTimeoutInMinutes=3D1
> engine-config --get SpmCommandFailOverRetries-->5
> engine-config --set SpmCommandFailOverRetries
> engine-config --get SPMFailOverAttempts-->3
> engine-config --set SPMFailOverAttempts=3D1
> engine-config --get NumberOfFailedRunsOnVds-->3
> engine-config --set NumberOfFailedRunsOnVds=3D1
> engine-config --get vdsTimeout-->180
> engine-config --set vdsTimeout=3D30
> engine-config --get VDSAttemptsToResetCount-->2
> engine-config --set VDSAttemptsToResetCount=3D1
> engine-config --get TimeoutToResetVdsInSeconds-->60
> engine-config --set TimeoutToResetVdsInSeconds=3D30
> Now the result of this is that when the VM is not running
on the SPM =
that it
> will migrate before going in pause mode.
> But when we tried it, when the vm is running on the SPM, it get's in =
paused
> mode (for safety reasons, I know ;-) ). And stays there until
the =
host gets
> MANUALLY fenced by rebooting it. So now my question is... How
can I =
make the
> hypervisor fence (so reboots, so vm is moved) quicker?
> Kind regards,
> Koen
> 2014-04-04 16:28 GMT+02:00
Koen Vanoppen < vanoppen.koen(a)gmail.com > =
:
:-). Ik heb
> reeds de time out aangepast. Die stond op 5 min voor hij den
time =
out ging
> geven. Staat nu op 2 min
> On Apr 4, 2014 4:14 PM, "David Van Zeebroeck" <
> david.van.zeebroeck(a)brusselsairport.be > wrote:
> Ik heb ze ook he
>
Maar normaal had de fencing moeten werken als ik het zo lees
> Dus daar is ergens iets verkeerd gelopen zo te lezen
>
From: Koen Vanoppen [mailto: vanoppen.koen(a)gmail.com ]
> Sent: vrijdag 4 april 2014 16:07
> To: David Van Zeebroeck
> Subject: Fwd: Re: [Users] HA
> David Van Zeebroeck
> Product Manager Unix Infrastructure
> Information & Communication Technology
> Brussels Airport Company
> T +32 (0)2 753 66 24
> M +32 (0)497 02 17 31
> david.van.zeebroeck(a)brusselsairport.be
>
www.brusselsairport.be
> FOLLOW US ON:
> Company Info
>
---------- Forwarded message ----------
> From: "Michal Skrivanek" < michal.skrivanek(a)redhat.com > Date: Apr 4, 2014 3:39 PM
> Subject: Re: [Users] HA
> To: "Koen Vanoppen" < vanoppen.koen(a)gmail.com > Cc: "ovirt-users Users" < users(a)ovirt.org
> On 4 Apr 2014, at 15:14, Sander Grendelman wrote:
> Do
you have power management configured?
> Was the "failed"
host fenced/rebooted?
> On Fri, Apr 4, 2014 at 2:21
PM, Koen Vanoppen < =
vanoppen.koen(a)gmail.com > hypervisor in case Storage connection fails?
> How can we make this happen?
Because for the moment, when we tested =
the
> situation they stayed in pause state.
> (Test situation:
> * Unplug the 2 fibre cables from the hypervisor
> * VM's go in pause state
> * VM's stayed in pause state until the failure was solved
> as said before, it's not
safe hence we (try to) not migrate them.
> They only get paused when they
actually access the storage which may =
not be
> always the case. I.e. the storage connection is severed, host
deemed
> NonOperational and VMs are getting migrated from it, then some of =
them will
> succeed if they didn't access that "bad" storage
=85 the paused VMs =
will
> remain (mostly, it can still happen that they appear paused
migrated =
on
> other host when the disk access occurs only at the last stage of
=
migration)
interruption it's
> not sometimes possible
> if you are fine with the VMs
restarted in short time on other host =
then power
> management/fencing will help here
> Thanks,
> michal
> )
> They only returned when we restored the fiber connection
to the =
Hypervisor=85
> hypervisor in case Storage connection fails?
> How can we make this happen?
Because for the moment, when we tested =
the
> situation they stayed in pause state.
> (Test situation:
> * Unplug the 2 fibre cables from the hypervisor
> * VM's go in pause state
> * VM's stayed in pause state until the failure was solved
> )
> They only returned when we restored the fiber connection
to the =
Hypervisor...
> Simoncelli" < fsimonce(a)redhat.com >, "Allon
Mureinik" < =
amureini(a)redhat.com
> > ----- Original Message -----
> > From: "Koen Vanoppen" < vanoppen.koen(a)gmail.com > > To: "Omer Frenkel" <
ofrenkel(a)redhat.com >, users(a)ovirt.org
> > Sent: Wednesday, April 2, 2014 4:17:36 PM
> > Subject: Re: [Users] HA
> > > Yes, indeed. I meant not-operational. Sorry.
> > So, if I understand this correctly. When we ever come in a =
situation
that
> > we
> > loose both storage connections on our hypervisor, we will have to =
manually
> > restore the connections first?
> > > And thanx for the tip for speeding up thins :-).
> > > Kind regards,
> > > Koen
> > > > 2014-04-02 15:14
GMT+02:00 Omer Frenkel < ofrenkel(a)redhat.com > :
> > > >
> > > ----- Original Message
-----
> > > From: "Koen Vanoppen" < vanoppen.koen(a)gmail.com > > > To: users(a)ovirt.org
> > > Sent: Wednesday, April 2, 2014 4:07:19 PM
> > > Subject: [Users] HA
> > > > > Dear All,
> > > > > Due our acceptance
testing, we discovered something. (Document =
will
> > > follow).
> > > When we disable one fiber path, no problem multipath finds it =
way
no
> > > pings
> > > are lost.
> > > BUT when we disabled both the fiber paths (so one of the storage =
domain
> > > is
> > > gone on this host, but still available on the other host), vms =
go
in
> > > paused
> > > mode... He chooses a new SPM (can we speed this up?), put's the =
host in
> > > non-responsive (can we speed this up, more important)
and the =
VM's stay
> > > on
> > > Paused mode... I would expect that they would be migrated (yes, =
HA
is
> > > i guess you mean the host
moves to not-operational (in contrast to
> > non-responsive)?
> > if so, the engine will not migrate vms that are paused to do io =
error,
> > because of data corruption risk.
> > > to speed up you can look at the storage domain
monitoring timeout:
> > engine-config --get StorageDomainFalureTimeoutInMinutes
> > > > > enabled) to the
other host and reboot there... Any solution? We =
are still
> > > using oVirt 3.3.1 , but we are planning a upgrade to
3.4 after =
the easter
> > > holiday.
> > > > > Kind Regards,
> > > > > Koen
> > > Hi
Koen,
> Resuming from paused due to io issues is supported (adding relevant =
folks).
> Regardless, if you did not define power management, you should =
manually
> approve
> source host was rebooted in order for migration to proceed. =
Otherwise we
risk
> split-brain scenario.
> Doron
>
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> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
_______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; =
"><br><div><div>On 11 Apr 2014, at 09:00, Koen Vanoppen
wrote:</div><br =
class=3D"Apple-interchange-newline"><blockquote
type=3D"cite"><div =
dir=3D"ltr"><div><div>Hi All,<br><br>Any news about
this? DSM hook or =
anything?<br></div>Thanx!<br><br></div>Kind
regards<br></div><div =
class=3D"gmail_extra"><br><br><div
class=3D"gmail_quote">2014-04-09 9:37 =
GMT+02:00 Omer Frenkel <span dir=3D"ltr"><<a =
href=3D"mailto:ofrenkel@redhat.com" =
target=3D"_blank">ofrenkel@redhat.com</a>></span>:<br