[PVFS2-users] Redundant data storage

[Nathan Poznick]

Thus spake Stuart Anderson:
> What about splitting my cluster in half and creating 2 100-node PVFS
> filesystems that each node mounts as a software raid-1 device.
> 
> I lose half my potential storage, but will PVFS play nicely with
> Linux software RAID so that if any one node crashes (disk and/or CPU)
> no other node else will notice? Including the re-syncing of the
> crashed PVFS filesystem after the node/disk are replaced and it is rebuilt?

Software RAID requires raw block devices for its constituient parts.
The kernel drivers then provide another block device upon which a
filesystem can be created.  Being a filesystem itself, PVFS2 does not
provide a block device interface.


-- 
Nathan Poznick <poznick at conwaycorp.net>

Q. How many computer programmers does it take to screw in a light bulb?
A. None. That is a hardware problem.

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