Shared block device
Scott Oertel
freebsd at scottevil.com
Sun Mar 11 09:28:39 CDT 2007
Billy Crook wrote:
> Anyone know of a way to share a block device like Raid-1 across
> multiple machines? I want to get two machines to share files to the
> same group of clients for R/W access and have changes replicated
> between the two machines, so they'd be effective immediately for the
> other clients. A month ago, I googled, and found a wiki of a bunch of
> different systems but they each had some fault. Some could only be
> written to from one place. The comparison section of the page left me
> ultimately thinking the only things that did what i wanted were
> GoogleFS (NOT public) and a couple others that were really expensive.
>
> I don't even so much care that the block device is whats replicated,
> but trying to replicate a file system on demand like that I'm guessing
> is not possible for locking reasons. (Two people from different
> servers could lock the same file in the same place and make changes to
> it. Has anyone here done anything like this before?
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You can setup shares over NFS and join them together using a software
RAID (mdadm if you're using linux) . I read some places of people trying
this and being somewhat successful.
-SO
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