[ovirt-devel] VDSM, FCoE and VirtIO

[Simone Tiraboschi]

----- Original Message -----
> From: "Sandro Bonazzola" <sbonazzo at redhat.com>
> To: devel at ovirt.org, "Tal Nisan" <tnisan at redhat.com>, "Allon Mureinik" <amureini at redhat.com>, "Nir Soffer"
> <nsoffer at redhat.com>
> Cc: "Simone Tiraboschi" <stirabos at redhat.com>
> Sent: Tuesday, December 16, 2014 9:56:58 AM
> Subject: Re: [ovirt-devel] VDSM, FCoE and VirtIO
> 
> Il 15/12/2014 16:52, Simone Tiraboschi ha scritto:
> > Hi,
> > I'm writing cause I working on hosted-engine deploy over fiber channel.
> > If possible, I'd like to try it for developing purposes in a nested
> > environment.
> > So I thought it would be possible to simulate a SAN with LIO and a vn2vn
> > FCoE connection using a couple of VirtIO devices.
> > 
> > I had some troubles using fcoeadm over VirtIO but than I found your patch
> > about libhbalinux and libudev. I applied it and it works or at least it
> > seams to.
> > Here I tracked what I did:
> > http://www.ovirt.org/Features/Self_Hosted_Engine_FC_Support
> > 
> > Now the problem is that VDSM sees the FCoE device but it reports as failed:
> > 
> > 'pathstatus': [{'lun': '0',
> >                   'physdev': 'sda',
> >                   'state': 'failed',
> >                   'type': 'FCP'}],
> > 
> > and I'm not sure if it's really an issue with VDSM or if it's something
> > with my FCoE setup.
> > 
> > Did someone ever used VDSM with FCoE?
> 
> Tal? Allon? Nir?

Just to add some info, it seams to correctly work directly using the device (fdisk, mkfs, mount) while it doesn't seam to work with VDSM reporting some issue with multipathd on that device.

Dec 15 18:16:14 f20t3 multipathd: sda: remove path (uevent)
Dec 15 18:16:14 f20t3 multipathd: 360014051d02b146ac574f2fabf6b1e38 Last path deleted, disabling queueing
Dec 15 18:16:14 f20t3 multipathd: 360014051d02b146ac574f2fabf6b1e38: devmap removed
Dec 15 18:16:14 f20t3 multipathd: 360014051d02b146ac574f2fabf6b1e38: stop event checker thread (139885130282752)
Dec 15 18:16:14 f20t3 multipathd: 360014051d02b146ac574f2fabf6b1e38: removed map after removing all paths
Dec 15 18:16:14 f20t3 multipathd: dm-3: remove map (uevent)
Dec 15 18:16:14 f20t3 multipathd: dm-3: devmap not registered, can't remove
Dec 15 18:16:14 f20t3 multipathd: dm-3: remove map (uevent)
Dec 15 18:16:14 f20t3 multipathd: dm-2: remove map (uevent)
Dec 15 18:16:14 f20t3 multipathd: dm-2: devmap not registered, can't remove
Dec 15 18:16:14 f20t3 multipathd: dm-2: remove map (uevent)

I'm not sure if it's really a VDSM issue of just something wrong in my setup.


> > thanks,
> > Simone
> > _______________________________________________
> > Devel mailing list
> > Devel at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/devel
> > 
> 
> 
> --
> Sandro Bonazzola
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