uneven disk distribution

Johnny Tan johnnydtan at gmail.com
Thu May 14 16:31:36 EDT 2015

We have a 6-node test riak cluster. One of the nodes seems to be using far
more disk:
staging-riak001.pp /dev/sda3              15G  6.3G  7.2G  47% /
staging-riak002.pp /dev/sda3              15G  6.4G  7.1G  48% /
staging-riak003.pp /dev/sda3              15G  6.1G  7.5G  45% /
staging-riak004.pp /dev/sda3              15G   14G  266M  99% /
staging-riak005.pp /dev/sda3              15G  5.8G  7.7G  44% /
staging-riak006.pp /dev/sda3              15G  6.3G  7.3G  47% /

Specifically, /var/lib/riak/bitcask is using up most of that space. It
seems to have files in there that are much older than any of the other
nodes. We've done maintenance of various sort on this cluster -- as the
name indicates, we use it as a staging ground before we go to production. I
don't recall a specific issue per se, but I wouldn't rule it out.

Is there a way to figure out if there's an underlying issue here, or
whether some of this disk space is not really current and can somehow be

What info would help answer those questions?

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