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* Re: [gentoo-user] [OT] RAID 1 over network
  @ 2009-06-16 15:54 99%     ` Dirk Heinrichs
  0 siblings, 0 replies; 1+ results
From: Dirk Heinrichs @ 2009-06-16 15:54 UTC (permalink / raw
  To: gentoo-user

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Am Dienstag 16 Juni 2009 15:58:37 schrieb Philipp Riegger:
> On Tue, 2009-06-16 at 16:45 +0300, Daniel Iliev wrote:
> > DRBD is HA solution which is achieved by switching the role of the
> > nodes in case the "active node" goes offline. I think DRBD is not meant
> > for the schema OP has described, because only the "active node" is
> > accessible via FS. DRBD works between the FS and block device layers.
> > It catches the FS writes from the active node and sends them over the
> > network. DRBD on the backup node receives those and replicates them
> > directly to the disk driver. Thus you can't have mounted FS on the
> > backup node. If the active node goes offline, the backup node takes
> > over which means DRBD switches roles and the FS has to be mounted
> > afterwards.
>
> But that might be a good solution with 2.6.30, NFS and FSCACHE.
>
> Another solution would be to use ndb (network block devices), dm-raid
> and a cluster filesystem.

And finally, there's OpenAFS. Not really RAID, but maybe sufficient.

Bye...

	Dirk

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2009-06-16 10:40     [gentoo-user] [OT] RAID 1 over network Renat Golubchyk
2009-06-16 13:45     ` Daniel Iliev
2009-06-16 13:58       ` Philipp Riegger
2009-06-16 15:54 99%     ` Dirk Heinrichs

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