[libvirt-users] Ang: Re: attaching storage pool error

[Yuan Dan]

----- Original Message -----
> 
> Hi and thanks, Dan!
> 
> 
> -----Yuan Dan <dyuan at redhat.com> skrev: -----
> Till: Johan Kragsterman <johan.kragsterman at capvert.se>
> Från: Yuan Dan <dyuan at redhat.com>
> Datum: 2016-08-22 10:43
> Kopia: libvirt-users at redhat.com
> Ärende: Re: [libvirt-users] attaching storage pool error
> 
> 
> ----- Original Message -----
> > Hi!
> > 
> > 
> > System centos7, system default libvirt version.
> > 
> > I've succeeded to create an npiv storage pool, which I could start without
> > problems. Though I couldn't attach it to the vm, it throwed errors when
> > trying. I want to boot from it, so I need it working from start. I read one
> > of Daniel Berrange's old(2010) blogs about attaching an iScsi pool, and
> > draw
> > my conclusions from that. Other documentation I haven't found. Someone can
> > point me to a more recent documentation of this?
> > 
> > Are there other mailing list in the libvirt/KVM communities that are more
> > focused on storage? I'd like to know about these, if so, since I'm a
> > storage
> > guy, and fiddle around a lot with these things...
> > 
> > There are quite a few things I'd like to know about, that I doubt this list
> > cares about, or have knowledge about, like multipath devices/pools,
> > virtio-scsi in combination with npiv-storagepool, etc.
> > 
> > So anyone that can point me further....?
> 
> http://libvirt.org/formatstorage.html
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Deployment_and_Administration_Guide/sect-NPIV_storage.html
> 
> Hope it can help you to get start with it.
> 
> 
> Unfortunatly I have already gone through these documents, several times as
> well, but these are only about the creation of storage pools, not how you
> attach them to the guest.

If the pool is ready, here are kinds of examples http://libvirt.org/formatdomain.html#elementsDisks

you can use it in guest like this:
    <disk type='volume' device='disk'>
      <driver name='qemu' type='raw'/>
      <source pool='iscsi-pool' volume='unit:0:0:1' mode='host'/>
      <auth username='myuser'>
        <secret type='iscsi' usage='libvirtiscsi'/>
      </auth>
      <target dev='vdb' bus='virtio'/>
    </disk>

> 
> Do I attach a storage pool as a disk. Like: -drive pool="pool-name", and if
> so, how do I do with index numbering, since the pool can hold several LUN's?
> Perhaps the code takes care of the indexing, since the LU's got numbers...?
> 
> Or do I have to attach every LU in the pool individually? With their own
> index number?
> 
> Rgrds Johan
> 
> 
> 
> 
> > 
> > Rgrds Johan
> > 
> > 
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> 
> 
> 
>