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I am looking for some sort of clustered /dev/shm like device or RAM based, clustered filesystem, running on Linux, so it supports mirroring. Or there is anything stable enough which would do the job the same way? So I can replicate RAM based data? I would like to have it self-repairing (e.g. just restart recovers the service).

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What's your usage scenario? –  jamieb Jul 13 '12 at 0:50
    
It is meant to be universal in this case to support any usage scenario with RAID-1 ramdisk, using synchronous and asynchronous I/O. –  Andrew Smith Jul 13 '12 at 14:54

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up vote 2 down vote accepted

You could theoretically run drbd with the underlying devices being files on a tmpfs filesystem. Whatever you're doing sounds a bit crazy though...

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I just need cluster storage with no flushing to disk, because it runs tiny os with tiny I/O –  Andrew Smith Jul 13 '12 at 14:47
    
Oh thank you very much, this is precisely what I was looking for :-))))) Yes it is crazy as hell. AND drbd is actually all done the way I was thinking of. –  Andrew Smith Jul 13 '12 at 14:49
    
you can try with glusterfs, gluster volume create gvola gnode1:/dev/shm gnode2:/dev/shm –  c4f4t0r Dec 19 '13 at 18:58

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