eml at guba.com
Tue Nov 22 17:37:30 PST 2005
Has anybody tried to build out any kind of 'replication groups' for
mogilefs, where you can define something like "when keeping multiple
copies of a file, make sure copy 1 goes somewhere in this set of hosts,
copy 2 goes in this set of hosts, where those host sets don't overlap?"
I'm concerned that copies of a single file will end up stored on a set
of machines that all share the same power strip... so if that strip
goes, out, we're kind of fubar'ed for a while.
We're also hoping that if we could group the replications, this might
help us for a move to a new datacenter - we'd be able to take down and
move 1/2 of the machines while things continue to run on the remaining
half (assuming you only keep 1 copy of everything).
(p.s. - saw Brad's livejournal post on the device balancing... very nice...)
More information about the mogilefs