[HELP] unmapping a deleted storage domain triggers crash ovirt

Tuesday, 8 November 2016

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Hello people,

something's not right in my ovirt infrastructure.
I currently have two different ovirt installation:
Ovirt3: 7 hosts linked to Compellent iscsi storage running ovirt 3.5.6
Ovirt4: 4 hosts linked to (same) Compellent iscsi storage running ovirt 4.0=
.4

I'm currently moving my guests from ovirt3 to ovirt4.
Since iscsi storage is linked to both installations, my high level approach=
 is:

1)      Shutdown VM in ovirt3.

2)      Maintenance + detach + remove VM storage in ovirt3

3)      Change LUN mapping via iscsi storage manager from ovirt3 to ovirt4

4)      Import storage in ovirt4

5)      Import VM in ovirt4

6)      Run and cheers with high grade liquor. GOTO step 1 for different VM=
.

Now, as soon as I perform step 3 (remove mappings from LUN), ovirt3 goes cr=
azy and eventually forces me to reboot all hosts one by one.
I tried different low level approaches to unmap LUN mpath'ed from hosts wit=
h inconsistent results.
A notable error log extract is:
Nov  8 15:30:52 sovana vdsm root ERROR Process failed with rc=3D1 out=3D'\n=
udevadm settle - timeout of 5 seconds reached, the event queue contains:\n =
 /sys/devices/virtual/block/dm-39 (8603)\n  /sys/devices/virtual/block/dm-3=
9 (8604)\n  /sys
/devices/virtual/block/dm-39 (8605)\n  /sys/devices/virtual/block/dm-39 (86=
06)\n  /sys/devices/virtual/block/dm-39 (8607)\n  /sys/devices/virtual/bloc=
k/dm-39 (8608)\n  /sys/devices/virtual/block/dm-39 (8609)\n  /sys/devices/v=
irtual/block
/dm-39 (8610)\n  /sys/devices/virtual/block/dm-39 (8611)\n  /sys/devices/vi=
rtual/block/dm-39 (8612)\n  /sys/devices/virtual/block/dm-39 (8613)\n  /sys=
/devices/virtual/block/dm-39 (8614)\n  /sys/devices/virtual/block/dm-39 (86=
15)\n  /sys/
devices/virtual/block/dm-39 (8616)\n  /sys/devices/virtual/block/dm-39 (861=
7)\n  /sys/devices/virtual/block/dm-39 (8618)\n  /sys/devices/virtual/block=
/dm-39 (8619)\n  /sys/devices/virtual/block/dm-39 (8620)\n  /sys/devices/vi=
rtual/block/
dm-39 (8621)\n  /sys/devices/virtual/block/dm-39 (8622)\n  /sys/devices/vir=
tual/block/dm-39 (8623)\n  /sys/devices/virtual/block/dm-39 (8624)\n  /sys/=
devices/virtual/block/dm-39 (8625)\n  /sys/devices/virtual/block/dm-39 (862=
6)\n  /sys/d
evices/virtual/block/dm-39 (8627)\n  /sys/devices/virtual/block/dm-39 (8628=
)\n  /sys/devices/virtual/block/dm-39 (8629)\n  /sys/devices/virtual/block/=
dm-39 (8630)\n  /sys/devices/virtual/block/dm-39 (8631)\n  /sys/devices/vir=
tual/block/d
m-39 (8632)\n  /sys/devices/virtual/block/dm-39 (8633)\n  /sys/devices/virt=
ual/block/dm-39 (8634)\n  /sys/devices/virtual/block/dm-39 (8635)\n  /sys/d=
evices/virtual/block/dm-39 (8636)\n  /sys/devices/virtual/block/dm-39 (8637=
)\n  /sys/de
vices/virtual/block/dm-39 (8638)\n  /sys/devices/virtual/block/dm-39 (8639)=
\n  /sys/devices/virtual/block/dm-39 (8640)\n  /sys/devices/virtual/block/d=
m-39 (8641)\n  /sys/devices/virtual/block/dm-39 (8642)\n  /sys/devices/virt=
ual/block/dm
-39 (8643)\n  /sys/devices/virtual/block/dm-39 (8644)\n  /sys/devices/virtu=
al/block/dm-39 (8645)\n  /sys/devices/virtual/block/dm-39 (8646)\n  /sys/de=
vices/virtual/block/d

I really need your help to sort this out as I'm actually blocked in my task=
.

Why mapping changes triggers ovirt crash on a storage which ovirt should no=
t care about?
Thanks

Andrea Ghelardi

+39 050 2203 71 | www.iongroup.com<http://www.iongroup.com/> | a.ghelardi@i=
ontrading.com<mailto:a.ghelardi@iontrading.com...
 Via San
Martino, 52 - 56125 Pisa - ITALY

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</head...
 <body lang=3D"EN-US"
link=3D"#0563C1" vlink=3D"#954F72"...
 <div
class=3D"WordSection1"...
 <p
class=3D"MsoNormal"><span lang=3D"IT">Hello
people,<o:p></o:p></span></p=
...
 <p class=3D"MsoNormal"><span
lang=3D"IT"><o:p>&nbsp;</o:p></span></p...
 <p class=3D"MsoNormal">something&#8217;s
not right in my ovirt infrastructu=
re.<o:p></o:p></p...
 <p
class=3D"MsoNormal">I currently have two different ovirt installation:<o=
:p></o:p></p...
 <p
class=3D"MsoNormal">Ovirt3: 7 hosts linked to Compellent iscsi storage r=
unning ovirt 3.5.6<o:p></o:p></p...
 <p
class=3D"MsoNormal">Ovirt4: 4 hosts linked to (same) Compellent iscsi st=
orage running ovirt 4.0.4<o:p></o:p></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p class=3D"MsoNormal">I&#8217;m currently
moving my guests from ovirt3 to =
ovirt4.<o:p></o:p></p...
 <p
class=3D"MsoNormal">Since iscsi storage is linked to both installations,=
 my high level approach is:<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">1)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Shutdown VM in
ovirt3.<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">2)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Maintenance &#43; detach &#43; remove VM
storage in=
 ovirt3<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">3)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Change LUN mapping via iscsi storage manager
from o=
virt3 to ovirt4<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">4)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Import storage in
ovirt4<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">5)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Import VM in
ovirt4<o:p></o:p></p...
 <p
class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo1"><![if !supportLists]><span
style=3D"mso-list:Ignore">6)<span style=
=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Run and cheers with high grade liquor. GOTO step
1 =
for different VM.<o:p></o:p></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p class=3D"MsoNormal">Now, as soon as I
perform step 3 (remove mappings fr=
om LUN), ovirt3 goes crazy and eventually forces me to reboot all hosts one=
 by one.<o:p></o:p></p...
 <p
class=3D"MsoNormal">I tried different low level approaches to unmap LUN =
mpath&#8217;ed from hosts with inconsistent results.
<o:p></o:p></p...
 <p
class=3D"MsoNormal">A notable error log extract
is:<o:p></o:p></p...
 <p
class=3D"MsoNormal">Nov&nbsp; 8 15:30:52 sovana vdsm root ERROR Process
=
failed with rc=3D1 out=3D'\nudevadm settle - timeout of 5 seconds reached, =
the event queue contains:\n&nbsp; /sys/devices/virtual/block/dm-39 (8603)\n=
&nbsp; /sys/devices/virtual/block/dm-39 (8604)\n&nbsp;
/sys<o:p></o:p></p...
 <p
class=3D"MsoNormal">/devices/virtual/block/dm-39 (8605)\n&nbsp;
/sys/dev=
ices/virtual/block/dm-39 (8606)\n&nbsp; /sys/devices/virtual/block/dm-39 (8=
607)\n&nbsp; /sys/devices/virtual/block/dm-39 (8608)\n&nbsp; /sys/devices/v=
irtual/block/dm-39 (8609)\n&nbsp;
/sys/devices/virtual/block<o:p></o:p></p...
 <p
class=3D"MsoNormal">/dm-39 (8610)\n&nbsp;
/sys/devices/virtual/block/dm-=
39 (8611)\n&nbsp; /sys/devices/virtual/block/dm-39 (8612)\n&nbsp; /sys/devi=
ces/virtual/block/dm-39 (8613)\n&nbsp; /sys/devices/virtual/block/dm-39 (86=
14)\n&nbsp; /sys/devices/virtual/block/dm-39 (8615)\n&nbsp;
/sys/<o:p></o:p=
></p...
 <p
class=3D"MsoNormal">devices/virtual/block/dm-39 (8616)\n&nbsp;
/sys/devi=
ces/virtual/block/dm-39 (8617)\n&nbsp; /sys/devices/virtual/block/dm-39 (86=
18)\n&nbsp; /sys/devices/virtual/block/dm-39 (8619)\n&nbsp; /sys/devices/vi=
rtual/block/dm-39 (8620)\n&nbsp;
/sys/devices/virtual/block/<o:p></o:p></p...
 <p
class=3D"MsoNormal">dm-39 (8621)\n&nbsp;
/sys/devices/virtual/block/dm-3=
9 (8622)\n&nbsp; /sys/devices/virtual/block/dm-39 (8623)\n&nbsp; /sys/devic=
es/virtual/block/dm-39 (8624)\n&nbsp; /sys/devices/virtual/block/dm-39 (862=
5)\n&nbsp; /sys/devices/virtual/block/dm-39 (8626)\n&nbsp;
/sys/d<o:p></o:p=
></p...
 <p
class=3D"MsoNormal">evices/virtual/block/dm-39 (8627)\n&nbsp;
/sys/devic=
es/virtual/block/dm-39 (8628)\n&nbsp; /sys/devices/virtual/block/dm-39 (862=
9)\n&nbsp; /sys/devices/virtual/block/dm-39 (8630)\n&nbsp; /sys/devices/vir=
tual/block/dm-39 (8631)\n&nbsp;
/sys/devices/virtual/block/d<o:p></o:p></p...
 <p
class=3D"MsoNormal">m-39 (8632)\n&nbsp;
/sys/devices/virtual/block/dm-39=
 (8633)\n&nbsp; /sys/devices/virtual/block/dm-39 (8634)\n&nbsp; /sys/device=
s/virtual/block/dm-39 (8635)\n&nbsp; /sys/devices/virtual/block/dm-39 (8636=
)\n&nbsp; /sys/devices/virtual/block/dm-39 (8637)\n&nbsp;
/sys/de<o:p></o:p=
></p...
 <p
class=3D"MsoNormal">vices/virtual/block/dm-39 (8638)\n&nbsp;
/sys/device=
s/virtual/block/dm-39 (8639)\n&nbsp; /sys/devices/virtual/block/dm-39 (8640=
)\n&nbsp; /sys/devices/virtual/block/dm-39 (8641)\n&nbsp; /sys/devices/virt=
ual/block/dm-39 (8642)\n&nbsp;
/sys/devices/virtual/block/dm<o:p></o:p></p...
 <p
class=3D"MsoNormal">-39 (8643)\n&nbsp; /sys/devices/virtual/block/dm-39
=
(8644)\n&nbsp; /sys/devices/virtual/block/dm-39 (8645)\n&nbsp; /sys/devices=
/virtual/block/dm-39 (8646)\n&nbsp;
/sys/devices/virtual/block/d<o:p></o:p>=
</p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p class=3D"MsoNormal">I really need your help
to sort this out as I&#8217;=
m actually blocked in my task.<o:p></o:p></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p class=3D"MsoNormal">Why mapping changes
triggers ovirt crash on a storag=
e which ovirt should not care about?<o:p></o:p></p...
 <p
class=3D"MsoNormal">Thanks<o:p></o:p></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...
 <p class=3D"MsoNormal"><b><span
lang=3D"IT" style=3D"font-size:9.0pt;font-f=
amily:ION;color:black">Andrea
Ghelardi<o:p></o:p></span></b></p...
 <p
class=3D"MsoNormal"><span lang=3D"IT"
style=3D"font-size:8.0pt;font-fami=
ly:&quot;Source Sans
Pro&quot;,sans-serif;color:gray"><o:p>&nbsp;</o:p></sp=
an></p...
 <p
class=3D"MsoNormal"><span lang=3D"IT"
style=3D"font-size:8.0pt;font-fami=
ly:&quot;Source Sans Pro&quot;,sans-serif;color:gray">&#43;39 050 2203
71</=
span><span lang=3D"IT"
style=3D"font-size:8.0pt;font-family:&quot;Source Sa=
ns Pro&quot;,sans-serif"...
 <b><span
style=3D"color:#33CCFF">| </span></b></span><span
lang=3D"EN-GB" s=
tyle=3D"font-size:8.0pt;font-family:&quot;Source Sans Pro&quot;,sans-serif;=
color:gray"><a href=3D"http://www.iongroup.com/"><span
lang=3D"IT" style=3D=
"color:gray">www.iongroup.com</span></a></span><span
lang=3D"EN-GB" style=
=3D"font-size:8.0pt;font-family:&quot;Source Sans Pro&quot;,sans-serif;colo=
r:#33CCFF"...
 </span><b><span
lang=3D"IT" style=3D"font-size:8.0pt;font-family:&quot;Sour=
ce Sans Pro&quot;,sans-serif;color:#33CCFF">|
</span></b><u><span lang=3D"EN-GB"
style=3D"font-size:8.0pt;font-family:&qu=
ot;Source Sans Pro&quot;,sans-serif;color:#0563C1"><a
href=3D"mailto:a.ghel=
ardi(a)iontrading.com&quot;&gt;&lt;span
lang=3D&quot;IT&quot;&gt;a.ghelardi(a)iontrading.com&lt;/span&gt;&lt;/a&gt;=
</span></u><span lang=3D"IT"
style=3D"font-size:8.0pt;font-family:&quot;Sou=
rce Sans
Pro&quot;,sans-serif;color:gray"><o:p></o:p></span></p...
 <p class=3D"MsoNormal"><span
lang=3D"IT" style=3D"font-size:8.0pt;font-fami=
ly:&quot;Source Sans Pro&quot;,sans-serif;color:gray">Via San Martino, 52
&=
#8211; 56125 Pisa - ITALY<o:p></o:p></span></p...
 <p class=3D"MsoNormal"><b><span
lang=3D"IT" style=3D"font-family:ION"><o:p>=
&nbsp;</o:p></span></b></p...
 <p
class=3D"MsoNormal"><i><span
style=3D"font-size:7.5pt;font-family:&quot;=
Source Sans Pro&quot;,sans-serif;color:silver">This email and any attachmen=
ts may contain information which is confidential and/or privileged. The inf=
ormation is intended exclusively for the addressee
 and the views expressed may not be official policy, but the personal views=
 of the originator. If you are not the intended recipient, be aware that an=
y disclosure, copying, distribution or use of the contents is prohibited. I=
f you have received this email and
 any file transmitted with it in error, please notify the sender by telepho=
ne or return email immediately and delete the material from your computer. =
Internet communications are not secure and ION Trading is not responsible f=
or their abuse by third parties,
 nor for any alteration or corruption in transmission, nor for any damage o=
r loss caused by any virus or other defect. ION Trading accepts no liabilit=
y or responsibility arising out of or in any way connected to this email.</=
span></i><span style=3D"font-size:7.5pt;font-family:&quot;Source Sans
Pro&q=
uot;,sans-serif"><o:p></o:p></span></p...
 <p class=3D"MsoNormal"><b><span
style=3D"font-family:ION"><o:p>&nbsp;</o:p>=
</span></b></p...
 <p
class=3D"MsoNormal"><img border=3D"0" width=3D"120"
height=3D"66" style=
=3D"width:1.25in;height:.6875in" id=3D"Picture_x0020_1"
src=3D"cid:image001=
.png(a)01D239DC.FFD0AD60&quot;
alt=3D"iON_HBlu_small"><o:p></o:p></p...
 <p class=3D"MsoNormal"><span
style=3D"font-size:6.0pt;font-family:ION;color=
:black">Automation through innovation</span><i><span
style=3D"font-size:7.5=
pt;font-family:&quot;Source Sans
Pro&quot;,sans-serif;color:silver"><o:p></=
o:p></span></i></p...
 <p
class=3D"MsoNormal"><o:p>&nbsp;</o:p></p...

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