6:34 p.m.
On Sun, Apr 26, 2020 at 3:00 PM Nyika Csaba <csabany(a)freemail.hu> wrote:
-------- Eredeti levél --------
Feladó: Gianluca Cecchi < gianluca.cecchi(a)gmail.com (Link ->
mailto:gianluca.cecchi@gmail.com) >
Dátum: 2020 április 26 11:42:40
Tárgy: Re: [ovirt-users] Re: Ovirt vs lvm?
Címzett: Nyika Csaba < csabany(a)freemail.hu (Link -> mailto:csabany@freemail.hu)
>
On Sun, Apr 26, 2020 at 11:06 AM Nyika Csaba < csabany(a)freemail.hu (Link ->
mailto:csabany@freemail.hu) > wrote:
Thanks the advice.
The hypervisors are "fresh". But the management server arrived from version 3.6
step-by-step (We use this ovirt since 2015).
The issuse occured diffrent clusters, hosts, diffrent HV versions. For example the last
but one vm occured on a ibm x3650, ovirt-node v4.2 host and the last on a lenovo,
ovirt-node v4.3.
Best
In theory on hypervisor node the only VG listed should be something like onn (like Ovirt
Node New generation, I think)
In my case I have also gluster volumes, but in your case with FC SAN you should only have
onn
[root@ovirt ~]# vgs
VG #PV #LV #SN Attr VSize VFree
gluster_vg_4t 1 2 0 wz--n- <3.64t 0
gluster_vg_4t2 1 2 0 wz--n- <3.64t 0
gluster_vg_nvme0n1 1 3 0 wz--n- 349.32g 0
gluster_vg_nvme1n1 1 2 0 wz--n- 931.51g 0
onn 1 11 0 wz--n- <228.40g <43.87g
[root@ovirt ~]#
And also the command "lvs" should so show only onn related logical volumes...
Gianluca
Hi,
I checked all nodes, and what i got back after vgs command literally
"unbelievable".
Some host look like good :
VG #PV #LV #SN Attr VSize VFree
003b6a83-9133-4e65-9d6d-878d08e0de06 1 25 0 wz--n- <50,00t <44,86t
0cfed8c2-cdfd-4a57-bb8c-eabfbdbccdf8 1 50 0 wz--n- <20,00t 4,57t
1831603c-e583-412a-b20e-f97b31ad9a55 1 122 0 wz--n- <25,00t <6,79t
3ff15d64-a716-4fad-94f0-abb69b5643a7 1 64 0 wz--n- <17,31t <4,09t
424fc43f-6bbf-47bb-94a0-b4c3322a4a90 1 68 0 wz--n- <14,46t <1,83t
4752cc9d-5f19-4cb1-b116-a62e3ee05783 1 81 0 wz--n- <28,00t <4,91t
567a63ec-5b34-425c-af20-5997450cf061 1 110 0 wz--n- <17,00t <2,21t
5f6dcc41-9a2f-432f-9de0-bed541cd6a03 1 71 0 wz--n- <20,00t <2,35t
8a4e4463-0945-430e-affd-c7ac2bbdc912 1 86 0 wz--n- <13,01t 2,85t
c9543c8d-c6da-44be-8060-179e807f1211 1 55 0 wz--n- <18,00t 5,22t
d5679d9d-ebf2-41ef-9e93-83d2cd9b027c 1 67 0 wz--n- <7,20t <1,15t
No this is not good - these are VGs on shared storage, and the host
should not be able to access them.
onn 1 11 0 wz--n- 277,46g
54,60g
I this guest VG (created inside the guest)? If so this is bad.
Others:
VG #PV #LV #SN Attr VSize VFree
003b6a83-9133-4e65-9d6d-878d08e0de06 1 25 0 wz--n- <50,00t <44,86t
0cfed8c2-cdfd-4a57-bb8c-eabfbdbccdf8 1 50 0 wz--n- <20,00t 4,57t
1831603c-e583-412a-b20e-f97b31ad9a55 1 122 0 wz--n- <25,00t <6,79t
3ff15d64-a716-4fad-94f0-abb69b5643a7 1 64 0 wz--n- <17,31t <4,09t
424fc43f-6bbf-47bb-94a0-b4c3322a4a90 1 68 0 wz--n- <14,46t <1,83t
4752cc9d-5f19-4cb1-b116-a62e3ee05783 1 81 0 wz--n- <28,00t <4,91t
567a63ec-5b34-425c-af20-5997450cf061 1 110 0 wz--n- <17,00t <2,21t
5f6dcc41-9a2f-432f-9de0-bed541cd6a03 1 71 0 wz--n- <20,00t <2,35t
8a4e4463-0945-430e-affd-c7ac2bbdc912 1 86 0 wz--n- <13,01t 2,85t
c9543c8d-c6da-44be-8060-179e807f1211 1 55 0 wz--n- <18,00t 5,22t
d5679d9d-ebf2-41ef-9e93-83d2cd9b027c 1 67 0 wz--n- <7,20t <1,15t
Again, bad.
onn 1 11 0 wz--n- 277,46g
54,60g
> vg_okosvaros 2 7 0 wz-pn- <77,20g
0
Bad if this guest VGs.
Others:
VG #PV #LV #SN Attr VSize VFree
003b6a83-9133-4e65-9d6d-878d08e0de06 1 25 0 wz--n- <50,00t <44,86t
0cfed8c2-cdfd-4a57-bb8c-eabfbdbccdf8 1 50 0 wz--n- <20,00t 4,57t
1831603c-e583-412a-b20e-f97b31ad9a55 1 122 0 wz--n- <25,00t <6,79t
3ff15d64-a716-4fad-94f0-abb69b5643a7 1 64 0 wz--n- <17,31t <4,09t
424fc43f-6bbf-47bb-94a0-b4c3322a4a90 1 68 0 wz--n- <14,46t <1,83t
4752cc9d-5f19-4cb1-b116-a62e3ee05783 1 81 0 wz--n- <28,00t <4,91t
567a63ec-5b34-425c-af20-5997450cf061 1 110 0 wz--n- <17,00t <2,21t
5f6dcc41-9a2f-432f-9de0-bed541cd6a03 1 71 0 wz--n- <20,00t <2,35t
8a4e4463-0945-430e-affd-c7ac2bbdc912 1 86 0 wz--n- <13,01t 2,85t
c9543c8d-c6da-44be-8060-179e807f1211 1 55 0 wz--n- <18,00t 5,22t
d5679d9d-ebf2-41ef-9e93-83d2cd9b027c 1 67 0 wz--n- <7,20t <1,15t
onn 1 13 0 wz--n- <446,07g 88,39g
vg_4trdb1p 3 7 0 wz-pn- 157,19g 0
vg_4trdb1t 3 7 0 wz-pn- 157,19g 0
vg_deployconfigrepo 3 7 0 wz-pn- 72,19g 0
vg_ektrdb1p 3 7 0 wz-pn- 157,19g 0
vg_ektrdb1t 3 7 0 wz-pn- 157,19g 0
vg_empteszt 2 6 0 wz-pn- <77,20g <20,00g
vg_helyiertekek 6 8 0 wz-pn- 278,11g 0
vg_log 3 7 0 wz-pn- 347,19g <50,00g
vg_monitor1m 3 7 0 wz-pn- 87,19g 0
vg_monoradattarappfejlesztoi 2 6 0 wz-pn- <97,20g 0
vg_okosvaros 2 6 0 wz-pn- <377,20g 0
Bad if these are guest VGs.
I can see some of the vms VG's, but not all.
You should not see *any* of the VM VGs on the host, and none of oVirt VGS
(e.g. 003b6a83-9133-4e65-9d6d-878d08e0de06).
This is known issue with LVM on older RHEL/CentOS versions. LVM scan active LVs
and access VGs and LVs created and owned by the guest.
This can lead to data corruption and man issues, and this is why we
recommend to configure
a strict LVM filter on hypervisors.
I'm not sure the issue you see inside the VM is related to this, but
it is very likely.
Creating LVM filter is not easy, you need to understand how LVM filter
work, and which
devices are needed by the host. LVM does not provide an easy way to
configure this, so
we provide a tool to help with this.
To configure LVM filter on a hypervisor, run:
vdsm-tool config-lvm-filter
And follow the instructions.
See https://blogs.ovirt.org/2017/12/lvm-configuration-the-easy-way/
Note that the tool use heuristics to find the devices needed by the
hypervisor, and it is
possible that the filter will be too strict and booting the host will
fail with the filter.
You will have to fix it manually if this happens.
We plan to integrate this in host deploy/upgrade flow so this will be
configured automatically.
I hope it will be available in a future 4.4. version.
Nir
I checked the "problematic" and the "good"
vm's disk connections (storage configuration mistake) but every storage what connected
a "wrong" vm-s, connected a "good" vm-s too.
I tried to power off vm-s and on again, and one of them became to "good" others
didn't.
Every "wrong" vms was made from same template, but others 50 "good"
vm were made from that template too.
csabany
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