On Fri, 18 May 2012, Tommi Virtanen wrote:
Losing a journal with btrfs: creating a new journal should let the osd recover the missing parts from replicas (and your data is safe mostly because of Ceph replication, recovery is just faster).
Cool! No more SSDs (that might fail over being written to continuously after a couple of months depending in size, prize, write cycles etc) just add a lot of RAM, keep the journals on tmpfs and make sure to run Ceph on Btrfs? While keeping the replicas separated so not all fail at once.
The contents of the storage node will not be corrupt or something (just a bit old) when losing the journal?
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