<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hello, Can any one please help us with the problem described below?<br></div><div><br data-mce-bogus="1"></div><div>Nir, I'm including you since a quick search on the internet led me to think that you have worked on this part of the project. Please forgive me if I'm off topic.<br></div><div><br data-mce-bogus="1"></div><div>(I incorrectly used below the expression "patch" when I meant "configure". it's corrected now)<br data-mce-bogus="1"></div><div><br></div><div data-marker="__SIG_PRE__"><div>cordialement, regards,</div><div><br data-mce-bogus="1"></div><table style="margin: 0px; table-layout: fixed; border: none; width: 345pt; padding: 0px;" data-mce-style="margin: 0px; table-layout: fixed; border: none; width: 345pt; padding: 0px;" width="460" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 86.25pt; text-align: left;" data-mce-style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 86.25pt; text-align: left;" width="115" valign="top"><a href="https://www.lyra-network.com/" style="border: none; text-decoration: none; width: 100%; display: block; clear: both;" data-mce-href="https://www.lyra-network.com/" data-mce-style="border: none; 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font-family: Arial,sans-serif; color: #2b3c7a; line-height: 18px; font-weight: bold;">Nelson LAMEIRAS</td></tr><tr><td style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;" data-mce-style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;">Ingénieur Systèmes et Réseaux<span style="font-family: Arial,sans-serif; color: #337ab7; font-size: 11px;" data-mce-style="font-family: Arial,sans-serif; color: #337ab7; font-size: 11px;"> / Systems and Networks engineer</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;" data-mce-style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;"><span style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px;" data-mce-style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px;">Tel: +33 5 32 09 09 70</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; 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border: none; text-decoration: none;">www.lyra-network.com</a> <a href="https://payzen.eu" style="font-size: 11px; font-family: Arial,sans-serif; line-height: 16px; border: none; text-decoration: none;" data-mce-href="https://payzen.eu" data-mce-style="font-size: 11px; font-family: Arial,sans-serif; line-height: 16px; border: none; text-decoration: none;"> | www.payzen.eu</a><br data-mce-bogus="1"></td></tr></tbody></table></td></tr></tbody></table><table style="margin: 0; table-layout: fixed; border: none; width: 345pt;" data-mce-style="margin: 0; table-layout: fixed; border: none; width: 345pt;" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 24pt; text-align: left;" data-mce-style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 24pt; text-align: left;" width="32" valign="top"><a href="https://www.youtube.com/channel/UCrVl1CO_Jlu3KbiRH-tQ_vA" style="border: none; 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table-layout: fixed; border: none; width: 345pt;" data-mce-style="margin: 0; table-layout: fixed; border: none; width: 345pt;" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td><hr style="background: #293b79 none repeat scroll 0% 0%; width: 100%; height: 4px; color: #293b79; margin: 0px;" data-mce-style="background: #293b79 none repeat scroll 0% 0%; width: 100%; height: 4px; color: #293b79; margin: 0px;"></td></tr></tbody></table><table style="margin: 0; table-layout: fixed; border: none; width: 345pt;" data-mce-style="margin: 0; table-layout: fixed; border: none; width: 345pt;" width="460" cellspacing="0" cellpadding="0"><tbody><tr><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 30.75pt; text-align: left;" data-mce-style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 30.75pt; text-align: left;"><div>Lyra Network, 109 rue de l'innovation, 31670 Labège, FRANCE</div></td></tr></tbody></table><div><br></div></div><br><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>De: </b>"Nelson Lameiras" <nelson.lameiras@lyra-network.com><br><b>À: </b>"ovirt users" <users@ovirt.org><br><b>Envoyé: </b>Mercredi 7 Juin 2017 14:59:48<br><b>Objet: </b>[ovirt-users] ISCSI storage with multiple nics on same subnet disabled on host activation<br></div><br><div data-marker="__QUOTED_TEXT__"><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hello,<br></div><br><div>In our oVirt hosts, we are using DELL equallogic SAN with each server connecting to SAN via 2 physical interfaces. Since both interfaces share the same network (Equalogic limitation) we must configure sysctl to to allow iSCSI multipath with multiple NICs in the same subnet :<br></div><br><div>--------------------------------------------------------------------------------------------<br></div><div><pre>net.ipv4.conf.p2p1.arp_ignore=1
net.ipv4.conf.p2p1.arp_announce=2
net.ipv4.conf.p2p1.rp_filter=2
net.ipv4.conf.p2p2.arp_ignore=1
net.ipv4.conf.p2p2.arp_announce=2
net.ipv4.conf.p2p2.rp_filter=2<br><br></pre><p>--------------------------------------------------------------------------------------------<br><br></p><p>This works great in most setups, but for a strange reason, on some of our setups, the sysctl configuration is updated by VDSM when activating a host and the second interface stops working immeadiatly :</p><div>--------------------------------------------------------------------------------------------</div><div>vdsm.log<br></div><div><pre id="preview"><code>2017-06-07 11:51:51,063+0200 INFO (jsonrpc/5) [storage.ISCSI] Setting strict mode rp_filter for device 'p2p2'. (iscsi:602)
2017-06-07 11:51:51,064+0200 ERROR (jsonrpc/5) [storage.HSM] Could not connect to storageServer (hsm:2392)
Traceback (most recent call last):
File "/usr/share/vdsm/storage/hsm.py", line 2389, in connectStorageServer
conObj.connect()
File "/usr/share/vdsm/storage/storageServer.py", line 433, in connect
iscsi.addIscsiNode(self._iface, self._target, self._cred)
File "/usr/lib/python2.7/site-packages/vdsm/storage/iscsi.py", line 232, in addIscsiNode
iscsiadm.node_login(iface.name, target.address, target.iqn)
File "/usr/lib/python2.7/site-packages/vdsm/storage/iscsiadm.py", line 337, in node_login
raise IscsiNodeError(rc, out, err)</code></pre><pre><br><br></pre><p style="margin: 0px;">--------------------------------------------------------------------------------------------</p></div></div><div><br><div>"strict mode" is enforced for second interface, and it no longuer works...</div><div>Which means - at least - that there is no redundancy in case of hardware faillure and this is not acceptable for our production needs.<br></div><br><div>What is really strange is that we have another "twin" site on another geographic region with simillar hardware configuration and same oVirt installation, and this problem does not happen.<br></div><div>Can this be really random?<br></div>What can be the root cause of this behaviour? How can I correct it?<br><br><div>our setup:</div><div>oVirt hostedEngine : Centor 7.3, ovirt 4.1.2<br></div><div>3 physical oVirt nodes centos 7.3, ovirt 4.1.2<br></div><div>SAN DELL Equalogic<br></div></div><br><div><div>cordialement, regards,</div><br><table style="margin: 0px; table-layout: fixed; border: none; width: 345pt; padding: 0px;" width="460" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 86.25pt; text-align: left;" width="115" valign="top"><a href="https://www.lyra-network.com/" style="border: none; text-decoration: none; width: 100%; display: block; clear: both;" target="_blank"><img src="cid:6fa8666d679e18cab5e566228d0ca3519aabec27@zimbra" alt="" width="115" border="0" height="94"></a><br></td><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 258.75pt;" width="345" valign="top"><table style="margin: 0; width: 258.75pt; table-layout: fixed; border: none;" width="345" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="font-size: 16px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 18px; font-weight: bold;">Nelson LAMEIRAS</td></tr><tr><td style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;">Ingénieur Systèmes et Réseaux<span style="font-family: Arial,sans-serif; color: #337ab7; font-size: 11px;"> / Systems and Networks engineer</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;"><span style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px;">Tel: +33 5 32 09 09 70</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;"><a href="mailto:nelson.lameiras@lyra-network.com" style="font-size: 11px; font-family: Arial,sans-serif; line-height: 16px; text-decoration: none;" target="_blank">nelson.lameiras@lyra-network.com</a><br></td></tr><tr><td style="line-height: 16px; 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