On Tue, Jan 8, 2019 at 1:29 PM Ralf Schenk <rs@databay.de> wrote:

Hello,

I'm running my Ovirt-Node-NG based Hosts off ISCSI root. That is what "vdsm-tool config-lvm-filter" suggests. Is this correct ?

[root@myhostname ~]# vdsm-tool config-lvm-filterAnalyzing host...Found these mounted logical volumes on this host: logical volume: /dev/mapper/onn_myhostname--iscsi-home mountpoint: /home devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-ovirt--node--ng--4.2.7.1--0.20181209.0+1 mountpoint: / devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-swap mountpoint: [SWAP] devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-tmp mountpoint: /tmp devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-var mountpoint: /var devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-var_crash mountpoint: /var/crash devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-var_log mountpoint: /var/log devices: /dev/mapper/mpath-myhostname-disk1p2 logical volume: /dev/mapper/onn_myhostname--iscsi-var_log_audit mountpoint: /var/log/audit devices: /dev/mapper/mpath-myhostname-disk1p2This is the recommended LVM filter for this host: filter = [ "a|^/dev/mapper/mpath-myhostname-disk1p2$|", "r|.*|" ]This filter allows LVM to access the local devices used by thehypervisor, but not shared storage owned by Vdsm. If you add a newdevice to the volume group, you will need to edit the filter manually.Configure LVM filter? [yes,NO]

Yoval, is /dev/mapper/mpath-myhostname-disk1p2 expected on node system?

Ralf, can you share the output of:

lsblk

multipath -ll

multipathd show paths format "%d %P"

Nir

Am 05.01.2019 um 19:34 schrieb tehnic@take3.ro:
Hello Greg,

this is what i was looking for.

After running "vdsm-tool config-lvm-filter" on all hosts (and rebooting them) all PVs, VGs and LVs from ISCSI domain were not visible anymore to local LVM on the ovirt hosts.

Additionally i made following tests:
- Cloning + running a VM on the ISCSI domain
- Detaching + (re-)attaching of the ISCSI domain
- Detaching, removing + (re-)import of the ISCSI domain 
- Creating new ISCSI domain (well, i needed to use "force operation" because creating on same ISCSI target)

All tests were successful.

As you wished i filed a bug: <https://github.com/oVirt/ovirt-site/issues/1857>
Thank you.

Best regards,
Robert
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Ralf Schenk
fon +49 (0) 24 05 / 40 83 70
fax +49 (0) 24 05 / 40 83 759
mail rs@databay.de

Databay AG
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Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE 210844202
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Ralf Schenk fon +49 (0) 24 05 / 40 83 70 fax +49 (0) 24 05 / 40 83 759 mail rs@databay.de		Databay AG Jens-Otto-Krag-Straße 11 D-52146 Würselen www.databay.de
Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE 210844202 Vorstand: Ralf Schenk, Dipl.-Ing. Jens Conze, Aresch Yavari, Dipl.-Kfm. Philipp Hermanns Aufsichtsratsvorsitzender: Wilhelm Dohmen