[Linux-cluster] Qdiskd not working anymore

[Flavio Junior]

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Well..
When you have more than one path to access a storage-device (SAN), you
will need to install/configure some kind of MultiPath I/O.

IBM has RDAC, EMC has PowerPath, HP has SecurePath, and so on..

Linux device-mapper (md) has dm-multipath as an alternative for
proprietary drivers above cited, maybe you can use it to configure
your multipath storage.

BTW, this is off-topic here (if your problem really is multipath
configuration, as i guessed).

- --

Flávio do Carmo Júnior aka waKKu



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On Sat, Dec 13, 2008 at 3:57 AM, Maykel Moya <moya-lists at infomed.sld.cu>wrote:

> I have a SAN LUN exported to a four node cluster. I' m using Quorum Disk
> and it was working OK (ie: shows up in clustat).
>
> The cluster isn't yet in production. Some days ago another io path was
> added to the SAN.
>
> Today I issued a clustat and see no reference to qdiskd. The daemon
> refused to start:
>
> --
> e1b01:~# qdiskd -fd
> [21092] debug: Loading configuration information
> [21092] debug: 0 heuristics loaded
> [21092] debug: Quorum Daemon: 0 heuristics, 3 interval, 23 tko, 3 votes
> [21092] debug: Run Flags: 00000035
> [21092] crit: Specified device /dev/sda1 does match kernel's reported
> sector size (0 != -1)
> --
>
> I wonder is there are any relationship between qdiskd failing and seeing
> the LUN partition twice in each node. /dev/sda1 is the qdisk, also seen
> as /dev/sdb1.
>
> I tried to recreate the quorum disk and updated cluster.conf to use
> device instead of label but still qdiskd refuse to start
>
> I'm using:
>
> linux 2.6.27
> rhcs 2.03.08
> openais 0.83
>
> on debian lenny.
>
> Thanks very much for your help
>
> Regards,
> maykel
>
>
>
> ---------------------------------------
>    Red Telematica de Salud - Cuba
>          CNICM - Infomed
>
> --
> Linux-cluster mailing list
> Linux-cluster at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-cluster
>
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