Hi!
Got a couple of storage questions here.
I'm a storage guy, running a new project, and just started with libvirt, but
have been using qemu/kvm on other platforms before, as well as oVirt.
So, my questions here:
I started with creating a vhba, and that went fine, I could see it on the
storage side logging in to the target with its wwn.
My next step would be to make it persistent, and then its this storage pool
creation I've seen.
Though some things are not clear to me. This is what the xml file looks like in
the documentation:
<pool type='scsi'>
<name>poolvhba0</name>
<source>
<adapter type='fc_host' wwnn='20000000c9831b4b'
wwpn='10000000c9831b4b'/>
</source>
<target>
<path>/dev/disk/by-path</path>
<permissions>
<mode>0700</mode>
<owner>0</owner>
<group>0</group>
</permissions>
</target>
</pool>
So there are a few of these things that are unclear to me:
* It seems like I should NOT configure a vhba in advance, but this is the
process that will configure the vhba for me?
* It also seems like the wwnn and wwpn set here are the ones that the vhba will
use, not the parent hba?
* There is an option of setting the parent here as well, which I will need for
some resons, but it is unclear to me whether the wwnn and wwpn's are from the
parent or the vhba? Looks like this in documentation:
<source>
<adapter type='fc_host' parent='scsi_host5' wwnn='20000000c9831b4b'
wwpn='10000000c9831b4b'/>
</source>
* So, are these wwpn and wwnn's from parent or vhba?
* Lastly, the path: In the xml file it says /dev/disk/by-path...but I have no
path...? Since I have not yet configured the vhba, I can not have a path? I can
not map a lun to the vhba before I have a vhba...
Or should I create a non persistent vhba, map a lun to it, and then source that
path, use the wwpn and wwnn from that vhba in the scsi pool creation???
That would make sense, but also be a bit complicated to use...
Best regards from/Med vänliga hälsningar från
Johan Kragsterman
Capvert
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