[Linux-cluster] multipath devices and Conga storage tab

[Arturo Gonzalez Ferrer]

2009/10/8 brem belguebli <brem.belguebli at gmail.com>

> Hello Arturo,
> indeed Conga doesn't seem to summarize all the /dev/sd devices to
> their belonging mpath one.
> A potential side effect of this being  if you have an important number
> of /dev/sd devices conga will timeout without showing you any result.
>

Well, finally i got to expose it to conga, and it was easy. Only i had to do
is:

pvcreate /dev/mapper/mpath0p1

Once the physical volume exists, it appears in conga when creating a new
volume group, so you can choose it. Doing the same on the rest of the nodes
i finally could create the clustered volume group and the corresponding gfs2
filesystem, and mount it on 3 nodes.


>
> I personnaly gave up using conga.
>
> About HP-DM, there is a OS's shipped solution (on which relies HP-DM!)
> called device-mapper-multipath, there's no necessity to use the HP
> one.
>

Uhm, I know, but supposedly it give support for my MSA2312fc ... so i don't
know if it would run only with device-mapper-multipath.

Thank you very much,
Arturo.


> Brem
>
> 2009/10/8 Arturo Gonzalez Ferrer <arturogf at ugr.es>
> >
> > Hello,
> > I'm using RHEL 5.4 with an HP MSA2312fc array, and I'm trying to
> configure a 3-node cluster sharing a GFS filesystem. I want to do this by
> using Conga. All went good, the cluster is up, but when going to the
> "storage" tab, I saw 8 devices (sda, sdb...sdh). This is caused of course by
> having two HBA in every node (there is another 4th node that is going to
> access another volume on the MSA).
> > So, I went for multipathing:
> > I've already installed HPDM (hp multipath) in the first node and I can
> see now on the command line both volumes that I created (/dev/mapper/mpath0
> with 1TB and /dev/mapper/mpath1 with 600GB), but the problem is that in
> Conga I can only see the previous 8 devices... so I'm starting to think that
> Conga does not look at multipath devices...or surely I don't know what I'm
> doing wrong in order to display them somehow.
> > Could you give me some direction to follow now? There is no much
> documentation about Conga storage management.
> > Cheers,
> > Arturo.
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
>
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