iSCSI multipathing setup troubles
hi, i'm trying to use iSCSI multipathing for a LUN shared by a Hitachi SAN. i can't figure out how this is supposed to work, maybe my setup isn't applicable at all... our storage admin shared the same LUN for me on two targets, which are located in two logical networks connected to different switches (i asked him to do so). on the oVirt hypervisor side there is only one bonded interface for storage traffic, so i configured two VLAN interfaces located in these networks on the bond interface. now i create the storage domain logging in to one of the targets connecting through its logical network. when i try to create a "second" storage domain for the same LUN logging in to the second target, oVirt tells me "LUN is already in use". i understand this, but now i can't configure an oVirt "iSCSI Bond" in any way. how is this supposed to work? right now the only working setup i can think of would be an iSCSI target that uses a redundant bond interface (with only one IP addresss) to which my hypervisors connect through different routed networks (using either dedicated network cards or vlan interfaces). is that correct? i feel like i'm missing something, but i couldn't find any examples for real world IP setups for iSCSI multipathing. thanks for explaining matthias
--_000_06C086DF1F844D5495F25A3FFB957390ifufrjbr_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I've found this on RHV manual, which should apply to oVirt: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualiza= tion/3.5/html/Administration_Guide/sect-Preparing_and_Adding_Block_Storage.= html#Configuring_iSCSI_Multipathing Let me know if works, because I'm considering a migration to oVirt and I wi= ll have the same issue. V. Sent from my iPhone On 3 Jul 2017, at 11:42, Matthias Leopold <matthias.leopold@meduniwien.ac.a= t<mailto:matthias.leopold@meduniwien.ac.at>> wrote: hi, i'm trying to use iSCSI multipathing for a LUN shared by a Hitachi SAN. i c= an't figure out how this is supposed to work, maybe my setup isn't applicab= le at all... our storage admin shared the same LUN for me on two targets, which are loca= ted in two logical networks connected to different switches (i asked him to= do so). on the oVirt hypervisor side there is only one bonded interface fo= r storage traffic, so i configured two VLAN interfaces located in these net= works on the bond interface. now i create the storage domain logging in to one of the targets connecting= through its logical network. when i try to create a "second" storage domai= n for the same LUN logging in to the second target, oVirt tells me "LUN is = already in use". i understand this, but now i can't configure an oVirt "iSC= SI Bond" in any way. how is this supposed to work? right now the only working setup i can think of would be an iSCSI target th= at uses a redundant bond interface (with only one IP addresss) to which my = hypervisors connect through different routed networks (using either dedicat= ed network cards or vlan interfaces). is that correct? i feel like i'm missing something, but i couldn't find any examples for rea= l world IP setups for iSCSI multipathing. thanks for explaining matthias _______________________________________________ Users mailing list Users@ovirt.org<mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users --_000_06C086DF1F844D5495F25A3FFB957390ifufrjbr_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> </head> <body dir=3D"auto"> <div>I've found this on RHV manual, which should apply to oVirt:</div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature"><a href=3D"https://access.redhat.com/documen= tation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html/Administration_Guid= e/sect-Preparing_and_Adding_Block_Storage.html#Configuring_iSCSI_Multipathi= ng">https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtua= lization/3.5/html/Administration_Guide/sect-Preparing_and_Adding_Block_Stor= age.html#Configuring_iSCSI_Multipathing</a></div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">Let me know if works, because I'm considerin= g a migration to oVirt and I will have the same issue.</div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">V.<br> <br> Sent from my iPhone</div> <div><br> On 3 Jul 2017, at 11:42, Matthias Leopold <<a href=3D"mailto:matthias.le= opold@meduniwien.ac.at">matthias.leopold@meduniwien.ac.at</a>> wrote:<br=
<br> <span></span><br> <span>now i create the storage domain logging in to one of the targets conn= ecting through its logical network. when i try to create a "second&quo= t; storage domain for the same LUN logging in to the second target, oVirt t= ells me "LUN is already in use". i understand
<br> </div> <blockquote type=3D"cite"> <div><span>hi,</span><br> <span></span><br> <span>i'm trying to use iSCSI multipathing for a LUN shared by a Hitachi SA= N. i can't figure out how this is supposed to work, maybe my setup isn't ap= plicable at all...</span><br> <span></span><br> <span>our storage admin shared the same LUN for me on two targets, which ar= e located in two logical networks connected to different switches (i asked = him to do so). on the oVirt hypervisor side there is only one bonded interf= ace for storage traffic, so i configured two VLAN interfaces located in these networks on the bond interface.</span= this, but now i can't configure an oVirt "iSCSI Bond" in any way= .</span><br> <span></span><br> <span>how is this supposed to work?</span><br> <span>right now the only working setup i can think of would be an iSCSI tar= get that uses a redundant bond interface (with only one IP addresss) to whi= ch my hypervisors connect through different routed networks (using either d= edicated network cards or vlan interfaces). is that correct?</span><br> <span></span><br> <span>i feel like i'm missing something, but i couldn't find any examples f= or real world IP setups for iSCSI multipathing.</span><br> <span></span><br> <span>thanks for explaining</span><br> <span>matthias</span><br> <span>_______________________________________________</span><br> <span>Users mailing list</span><br> <span><a href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a></span><br> <span><a href=3D"http://lists.ovirt.org/mailman/listinfo/users">http://list= s.ovirt.org/mailman/listinfo/users</a></span><br> </div> </blockquote> </body> </html> --_000_06C086DF1F844D5495F25A3FFB957390ifufrjbr_--
participants (2)
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Matthias Leopold -
Vinícius Ferrão