Joe,

If the sample data is not confidential, how about creating a tar file of the 
entire leveldb data directory and either emailing to me directly or posting 
somewhere I can download it?  No need to copy the entire mailing list on the 
file or download location.

Matthew

> On Feb 26, 2016, at 11:19 AM, Joe Olson <technol...@nododos.com> wrote:
> 
> 
> 
> Negative.
> 
> I have ring size set to 8, leveldb split across two sets of drives ("fast" 
> and "slow", but meaningless on the test Vagrant box...just two separate 
> directories). I checked all of the ../leveldb/* directories. All LOG files 
> are identical, and no errors in any of them.
> 
> I will try to build another Vagrant machine with the default riak.conf and 
> see if I can get this to repeat. It is almost as if the KV pairs are not 
> persisting to disk at all.
> 
> 
> From: "Matthew Von-Maszewski" <matth...@basho.com>
> To: "Joe Olson" <technol...@nododos.com>
> Cc: "riak-users" <riak-users@lists.basho.com>, "cmancini" <cmanc...@basho.com>
> Sent: Friday, February 26, 2016 10:12:15 AM
> Subject: Re: Ok, I am stumped. Losing data or riak stop
> 
> Joe,
> 
> Are there any error messages in the leveldb LOG and/or LOG.old files?  These 
> files are located within each vnode's directory, likely 
> /var/lib/riak/data/leveldb/*/LOG* on your machine.
> 
> The LOG files are not to be confused with 000xxx.log files.  The lower case 
> *.log files are the recovery files that should contain the keys you are 
> missing.  If they are not loading properly, the LOG files should have clues.
> 
> Matthew
> 
> On Feb 26, 2016, at 11:04 AM, Christopher Mancini <cmanc...@basho.com 
> <mailto:cmanc...@basho.com>> wrote:
> 
> Hey Joe,
> 
> I will do my best to help, but I am not the most experienced with Riak 
> operations. Your best bet to get to a solution as fast as possible is to 
> include the full users group, which I have added to the recipients of this 
> message.
> 
> 1. Are the Riak data directories within Vagrant shared directories between 
> the host and guest? I have had issues with OS file system caching before when 
> working with web server files.
> 
> 2. What version of Ubuntu are you using?
> 
> 3. How did you install Riak on Ubuntu?
> 
> 4. Have you tried restoring the original distribution riak.conf file and seen 
> if the issue persists? This would help you determine if the issue is your 
> config or something with your environment.
> 
> Chris
> 
> On Fri, Feb 26, 2016 at 10:55 AM Joe Olson <technol...@nododos.com 
> <mailto:technol...@nododos.com>> wrote:
> 
> Chris - 
> 
>  I cannot figure out what is going on. Here is my test case. Configuration 
> file attached. I am running a single node of Riak on a vagrant box with a 
> level DB back end. I don't even have to bring the box down, merely stopping 
> and restarting riak '(riak stop' and 'riak start' or 'risk restart) causes 
> all the keys to be lost. The riak node is set up on a Vagrant box. But 
> again....I do not have to bring the machine up or down to get this error.
> 
> I've also deleted the ring info in /var/lib/riak/ring, and deleted all the 
> leveldb files. In this case, the bucket type is just n_val = 1, and the ring 
> size is the minimum of 8. 
> 
> Is it possible Riak is not flushing RAM to disk after write? The keys only 
> reside in RAM?
> 
> My test procedure:
> 
> ====On a remote machine=====
> 
> riak01@ubuntu:/etc$ curl -i http:// 
> <><ip>:8098/types/n1/buckets/test/keys?keys=true
> HTTP/1.1 200 OK
> Vary: Accept-Encoding
> Server: MochiWeb/1.1 WebMachine/1.10.8 (that head fake, tho)
> Date: Fri, 26 Feb 2016 13:14:59 GMT
> Content-Type: application/json
> Content-Length: 17
> 
> {"keys":["test"]}
> 
> riak01@ubuntu:/etc$
> 
> 
> 
> ====On the single Riak node itself====
> 
> [vagrant@i-2016022519 <callto:2016022519>-9bb5c84f riak]$ sudo riak stop
> ok
> [vagrant@i-2016022519 <callto:2016022519>-9bb5c84f riak]$ sudo riak start
> [vagrant@i-2016022519 <callto:2016022519>-9bb5c84f riak]$ sudo riak ping
> pong
> 
> 
> 
> ====Back to the remote machine====
> 
> riak01@ubuntu:/etc$ curl -i http:// 
> <><ip>:8098/types/n1/buckets/test/keys?keys=true
> HTTP/1.1 200 OK
> Vary: Accept-Encoding
> Server: MochiWeb/1.1 WebMachine/1.10.8 (that head fake, tho)
> Date: Fri, 26 Feb 2016 13:16:34 GMT
> Content-Type: application/json
> Content-Length: 11
> 
> {"keys":[]}
> 
> riak01@ubuntu:/etc$
> 
> 
> 
> -- 
> Sincerely,
> 
> Christopher Mancini
> -----------------------------
> 
> employee = {
>     purpose: solve problems with code,
>     phone:    7164625591,
>     email:     cmanc...@basho.com <mailto:cmanc...@basho.com>,
>     github:    http://www.github.com/christophermancini 
> <http://www.github.com/christophermancini>
> }
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