7:16 a.m.
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We are currently evaluating ovirt for our new VM backend and part of that is moving the
engine to a physical controller node. So I took the opportunity to test a DR scenario
where the engine fails and takes more than a reboot to bring it back up. For the most part
it was straight forward to get it up and going, but I'm having a hard time getting the
previous master data domain to import into the new engine. I've attached relevant
snippets of the engine and vdsm log.
Engine: http://pastebin.com/xBZ7CBs7
VDSM: http://pastebin.com/eksVyWBn
Regards,
Logan
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<html><body><div style=3D"font-family: Arial; font-size: 12pt; color:
#0000=
00"><div>We are currently evaluating ovirt for our new VM backend and part
=
of that is moving the engine to a physical controller node. So I too=
k the opportunity to test a DR scenario where the engine fails and takes mo=
re than a reboot to bring it back up. For the most part it was straig=
ht forward to get it up and going, but I'm having a hard time getting the p=
revious master data domain to import into the new engine. I've attach=
ed relevant snippets of the engine and vdsm log.</div><div><br
data-mce-bog=
us=3D"1"></div><div><span style=3D"font-size: 12pt;"
data-mce-style=3D"font=
-size:
12pt;">Engine: http://pastebin.com/xBZ7CBs7</span>...
r></div><div><span style=3D"font-size: 12pt;"
data-mce-style=3D"font-size: =
12pt;">VDSM: http://pastebin.com/eksVyWBn</span>&l...
div><br data-mce-bogus=3D"1"></div><div
data-marker=3D"__SIG_PRE__">Regards=
,<br>Logan</div></div></body></html>
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12:12 p.m.
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Am I correct in the assumption that importing a previously master data domain into a fresh
engine without a current master domain is supported?
Regards,
Logan
----- On Jul 19, 2016, at 7:16 AM, Logan Kuhn <logank(a)wolfram.com> wrote:
| We are currently evaluating ovirt for our new VM backend and part of that is
| moving the engine to a physical controller node. So I took the opportunity to
| test a DR scenario where the engine fails and takes more than a reboot to bring
| it back up. For the most part it was straight forward to get it up and going,
| but I'm having a hard time getting the previous master data domain to import
| into the new engine. I've attached relevant snippets of the engine and vdsm
| log.
| Engine: http://pastebin.com/xBZ7CBs7
| VDSM: http://pastebin.com/eksVyWBn
| Regards,
| Logan
| _______________________________________________
| Users mailing list
| Users(a)ovirt.org
| http://lists.ovirt.org/mailman/listinfo/users
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<html><body><div style=3D"font-family: Arial; font-size: 12pt; color:
#0000=
00"><div>Am I correct in the assumption that importing a previously master
=
data domain into a fresh engine without a current master domain is supporte=
d?</div><div><br></div><div
data-marker=3D"__SIG_PRE__">Regards,<br>Logan</=
div><br><span id=3D"zwchr"
data-marker=3D"__DIVIDER__">----- On Jul 19, 201=
6, at 7:16 AM, Logan Kuhn &lt;logank(a)wolfram.com&gt;
wrote:<br></span><div =
data-marker=3D"__QUOTED_TEXT__"><blockquote style=3D"border-left: 2px
solid=
#1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: no=
rmal; font-style: normal; text-decoration: none; font-family: Helvetica,Ari=
al,sans-serif; font-size: 12pt;" data-mce-style=3D"border-left: 2px solid #=
1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: norm=
al; font-style: normal; text-decoration: none; font-family: Helvetica,Arial=
,sans-serif; font-size: 12pt;"><div style=3D"font-family: Arial;
font-size:=
12pt; color: #000000;" data-mce-style=3D"font-family: Arial; font-size: 12=
pt; color: #000000;"><div>We are currently evaluating ovirt for our new VM
=
backend and part of that is moving the engine to a physical controller node=
. So I took the opportunity to test a DR scenario where the engine f=
ails and takes more than a reboot to bring it back up. For the most p=
art it was straight forward to get it up and going, but I'm having a hard t=
ime getting the previous master data domain to import into the new engine. =
I've attached relevant snippets of the engine and vdsm
log.</div><br>=
<div><span style=3D"font-size: 12pt;" data-mce-style=3D"font-size:
12pt;">E=
ngine: http://pastebin.com/xBZ7CBs7</span></div><...
style=
=3D"font-size: 12pt;" data-mce-style=3D"font-size:
12pt;">VDSM: http:/=
/pastebin.com/eksVyWBn</span></div><br><br><div>Regards,<br>Logan</div></di=
v><br>_______________________________________________<br>Users mailing
list=
<br>Users@ovirt.org<br>http://lists.ovirt.org/mailman/listinfo/users<br></b=
lockquote></div></div></body></html>
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3:06 a.m.
Logan Kuhn <logank(a)wolfram.com> writes:
Am I correct in the assumption that importing a previously master
data domain
into a fresh engine without a current master domain is supported?
It's supported only in case the master domain was previously correctly
detached from the data center.
In case of an unexpected complete disaster, when a fresh engine is
installed and used, it's still possible to recover the master domain in
theory. You must find `metadata' file in the master domain and edit it
for the new engine. It's completely unsupported and it may or may not
work. We don't have guidelines how to do it, but you may try to create
a new master domain, then detach it and compare the two metadata files.
10:10 a.m.
Thank you!
That does do some interesting things, but doesn't appear to work.
I've added a new storage domain, merged the differences in the metadata file back to
the old one and powered it up. When I start up the nodes they endlessly report: VDSM
ovirt-reqa1 command failed: (-226, 'Unable to read resource owners', 'Sanlock
exception')
I tried reinstalling one of them and the error message continues. At least for now
I've restored the old config and the error is gone.
Regards,
Logan
----- On Jul 22, 2016, at 3:06 AM, Milan Zamazal mzamazal(a)redhat.com wrote:
| Logan Kuhn <logank(a)wolfram.com> writes:
|
|> Am I correct in the assumption that importing a previously master data domain
|> into a fresh engine without a current master domain is supported?
|
| It's supported only in case the master domain was previously correctly
| detached from the data center.
|
| In case of an unexpected complete disaster, when a fresh engine is
| installed and used, it's still possible to recover the master domain in
| theory. You must find `metadata' file in the master domain and edit it
| for the new engine. It's completely unsupported and it may or may not
| work. We don't have guidelines how to do it, but you may try to create
| a new master domain, then detach it and compare the two metadata files.
2:56 p.m.
Il 22/Lug/2016 17:10, "Logan Kuhn" <logank(a)wolfram.com> ha scritto:
Thank you!
That does do some interesting things, but doesn't appear to work.
I've added a new storage domain, merged the differences in the metadata
file
back to the old one and powered it up. When I start up the nodes they
endlessly report: VDSM ovirt-reqa1 command failed: (-226, 'Unable to read
resource owners', 'Sanlock exception')
I tried reinstalling one of them and the error message continues. At
least for now
I've restored the old config and the error is gone.
Regards,
Logan
Logan, do you mind to write a testcase in ovirt.org website for the
disaster recovery test you are doing? Milan, if Logan write it, can you
please review it?
----- On Jul 22, 2016, at 3:06 AM, Milan Zamazal mzamazal(a)redhat.com
wrote:
| Logan Kuhn <logank(a)wolfram.com> writes:
|
|> Am I correct in the assumption that importing a previously master data
domain
|> into a fresh engine without a current master domain is
supported?
|
| It's supported only in case the master domain was previously correctly
| detached from the data center.
|
| In case of an unexpected complete disaster, when a fresh engine is
| installed and used, it's still possible to recover the master domain in
| theory. You must find `metadata' file in the master domain and edit it
| for the new engine. It's completely unsupported and it may or may not
| work. We don't have guidelines how to do it, but you may try to create
| a new master domain, then detach it and compare the two metadata files.
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
9:15 a.m.
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I'd be happy to, but how/where do I do that?
Regards,
Logan
----- On Jul 25, 2016, at 2:56 PM, Sandro Bonazzola <sbonazzo(a)redhat.com> wrote:
| Il 22/Lug/2016 17:10, "Logan Kuhn" < logank(a)wolfram.com > ha scritto:
| > Thank you!
| > That does do some interesting things, but doesn't appear to work.
|> I've added a new storage domain, merged the differences in the metadata file
|> back to the old one and powered it up. When I start up the nodes they endlessly
|> report: VDSM ovirt-reqa1 command failed: (-226, 'Unable to read resource
| > owners', 'Sanlock exception')
|> I tried reinstalling one of them and the error message continues. At least for
| > now I've restored the old config and the error is gone.
| > Regards,
| > Logan
| Logan, do you mind to write a testcase in ovirt.org website for the disaster
| recovery test you are doing? Milan, if Logan write it, can you please review
| it?
| > ----- On Jul 22, 2016, at 3:06 AM, Milan Zamazal mzamazal(a)redhat.com wrote:
| > | Logan Kuhn < logank(a)wolfram.com > writes:
| > |> Am I correct in the assumption that importing a previously master data
domain
| > |> into a fresh engine without a current master domain is supported?
| > | It's supported only in case the master domain was previously correctly
| > | detached from the data center.
| > | In case of an unexpected complete disaster, when a fresh engine is
| > | installed and used, it's still possible to recover the master domain in
| > | theory. You must find `metadata' file in the master domain and edit it
| > | for the new engine. It's completely unsupported and it may or may not
| > | work. We don't have guidelines how to do it, but you may try to create
| > | a new master domain, then detach it and compare the two metadata files.
| > _______________________________________________
| > Users mailing list
| > Users(a)ovirt.org
| > http://lists.ovirt.org/mailman/listinfo/users
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<html><body><div style="font-family: Arial; font-size: 12pt; color:
#000000"><div>I'd be happy to, but how/where do I do
that?</div><div><br></div><div
data-marker="__SIG_PRE__">Regards,<br>Logan</div><br><span
id="zwchr" data-marker="__DIVIDER__">----- On Jul 25, 2016, at 2:56
PM, Sandro Bonazzola &lt;sbonazzo(a)redhat.com&gt;
wrote:<br></span><div
data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px
solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><p
dir="ltr"></p>
<p dir="ltr">Il 22/Lug/2016 17:10, "Logan Kuhn" <<a
href="mailto:logank@wolfram.com"
target="_blank">logank(a)wolfram.com</a>&gt; ha scritto:<br>
><br>
> Thank you!<br>
><br>
> That does do some interesting things, but doesn't appear to work.<br>
><br>
> I've added a new storage domain, merged the differences in the metadata file
back to the old one and powered it up. When I start up the nodes they endlessly
report: VDSM ovirt-reqa1 command failed: (-226, 'Unable to read resource owners',
'Sanlock exception')<br>
><br>
> I tried reinstalling one of them and the error message continues. At
least for now I've restored the old config and the error is gone.<br>
><br>
> Regards,<br>
> Logan<br>
><br></p>
<p dir="ltr">Logan, do you mind to write a testcase in <a
href="http://ovirt.org" target="_blank">ovirt.org</a> website
for the disaster recovery test you are doing? Milan, if Logan write it, can you please
review it?<br><br><br></p>
<p dir="ltr">> ----- On Jul 22, 2016, at 3:06 AM, Milan Zamazal
<a href="mailto:mzamazal@redhat.com"
target="_blank">mzamazal(a)redhat.com</a> wrote:<br>
><br>
> | Logan Kuhn <<a href="mailto:logank@wolfram.com"
target="_blank">logank(a)wolfram.com</a>&gt; writes:<br>
> |<br>
> |> Am I correct in the assumption that importing a previously master data
domain<br>
> |> into a fresh engine without a current master domain is
supported?<br>
> |<br>
> | It's supported only in case the master domain was previously
correctly<br>
> | detached from the data center.<br>
> |<br>
> | In case of an unexpected complete disaster, when a fresh engine is<br>
> | installed and used, it's still possible to recover the master domain
in<br>
> | theory. You must find `metadata' file in the master domain and
edit it<br>
> | for the new engine. It's completely unsupported and it may or may
not<br>
> | work. We don't have guidelines how to do it, but you may try to
create<br>
> | a new master domain, then detach it and compare the two metadata
files.<br>
> _______________________________________________<br>
> Users mailing list<br>
> <a href="mailto:Users@ovirt.org"
target="_blank">Users(a)ovirt.org</a><br>
> <a href="http://lists.ovirt.org/mailman/listinfo/users"
target="_blank">http://lists.ovirt.org/mailman/listinfo/user...
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3212
days inactive
3219
days old
5 comments
3 participants
participants (3)
-
Logan Kuhn -
Milan Zamazal -
Sandro Bonazzola