[Ocfs2-users] Reservation conflicts

[brad hancock]

Yeah both guest have the same Harddrive attached with the virtual scsi
controller configured
as Physical to set a  policy to allow virtual disk to be
used simultaneously by multi virtual machines.

as /dev/sdb1

node:
        ip_port = 7777
        ip_address = 10.0.0.1
        number = 0
        name = mdcvmsmes01
        cluster = ocfs2

node:
        ip_port = 7777
        ip_address = 10.0.0.2
        number = 1
        name = mdcvmsmes02
        cluster = ocfs2

cluster:
        node_count = 2
        name = ocfs2

On Thu, Dec 9, 2010 at 4:15 PM, Joel Becker <Joel.Becker at oracle.com> wrote:

> On Thu, Dec 09, 2010 at 04:02:14PM -0600, brad hancock wrote:
> > I have two vmware guests that share a OCFS2 partition through VMWare
> VMFS.
> > It resides on a SAN.
>
>         Let me see if I understand the configuration.  You have a SAN.
> On that SAN is a LUN.  You have one VMWare host in this configuration.
> The VMWare host has formatted that LUN for VMFS.  There is a disk image
> on the VMFS that both guests see as sdb.  Is this correct?
>
> > Each host has the following error in the kernel log:
> >
> > [2037805.922718] end_request: I/O error, dev sdb, sector 1735
> > [2037805.922974] (0,0):o2hb_bio_end_io:225 ERROR: IO Error -5
> > [2037805.923370] (27506,0):o2hb_do_disk_heartbeat:753 ERROR: status = -5
> >
> >
> > We also see the following on both machines:
> >
> >  (1888,0):o2hb_do_disk_heartbeat:753 ERROR: status = -5
> > [202381.822030] (1888,0):o2hb_do_disk_heartbeat:762 ERROR: Device "sdb1":
> > another node is heartbeating in our slot!
> >
> > I notice the sector is the same on both machines: 1735.
> >
> > Is this an issue with vmware?
>
>         The read errors ("another node is heartbeating in our slot")
> sound like VMWare is not allowing the nodes to see each other's
> activity.  The write error is more surprising, but it could be part of
> the same issue.
>
> Joel
>
>
> --
>
> "Every day I get up and look through the Forbes list of the richest
>  people in America. If I'm not there, I go to work."
>        - Robert Orben
>
> Joel Becker
> Senior Development Manager
> Oracle
> E-mail: joel.becker at oracle.com
> Phone: (650) 506-8127
>
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