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Re: [dm-devel] boot from san & lvm



I just did a reboot. now i have tons of errors like:

device-mapper: table: 253:7: multipath: error getting device
device-mapper: ioctl: error adding target to table


On Jan 7, 2008 5:02 PM, Urs Golla <urs golla gmail com> wrote:
> Hi
>
> Thank you for your reply!
>
> Using "mapper" instead of mpath did it!
>
> hm... i think the partition (mpath0p1) is just "/boot" and mpath0p2 is
> the rest. this would mean, everything is ok now?
>
> cheers
>
>
>
>
> On 1/7/08, malahal us ibm com <malahal us ibm com> wrote:
> > Urs Golla [urs golla gmail com] wrote:
> > > Hi
> > >
> > > I would like to boot RHEL5 from SAN. If I install with the "mpath"
> > > parameter I can see the mapper/mpath0 device and the installation
> > > completes without any errors.
> > >
> > > It boots from SAN and everything looks ok (well, lets say its
> > > working). If i add this lines to /etc/lvm/lvm.conf
> > >
> > > types = [ "device-mapper", 1]
> > > "filter = [ "a/dev/mpath/.*/", "r/.*/" ]"
> >
> > Try "mapper" instead of "mpath" above to handle partitions on your
> > devices.
> >
> > > and remove the blacklist lines from /etc/multipath.conf as described
> > > in the "Native Multipath Failover Based on DM-MPIO for v2.6.x Linux
> > > Kernel and EMC(R) Storage Arrays" manual the pvscan command returns
> > > with " No matching physical volumes found". Why?
> > >
> > > If I remove the filter line from lvm.conf the pvscan & pvdisplay
> > > command returns:
> > >
> > > (...)
> > > PV Name               /dev/mapper/mpath0p2
> > > (...)
> > >
> > > Why is it using mpath0p2 and not mpath0? /dev/mapper/mpath0 does exist
> > > and points to the right disks, because "multipath -ll" gives me
> > > something like that:
> >
> > You must be having partitions on your disk (either you did or the
> > installer did for you).
> >
> > --
> > dm-devel mailing list
> > dm-devel redhat com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> >
>


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