Any desire for updated MogileFS docs?

Brett G. Durrett brett at
Thu Jul 12 19:56:34 UTC 2007

Okay, I received enough responses (mostly off-list) and it seems some 
updated documentation would be of value.  I agree with Arthur that an 
operational admin guide would be useful (if I had that now it would 
probably save me the work I need to do).

Also, thanks for the great list of questions - I will try to incorporate 
them into anything I create (even if it just identifies the question  as 
needing to be answered).


Arthur Bebak wrote:
> Earl Cahill wrote:
>>> 1.  Would people find real value in updated docs?
> Beyond just a straight install guide I think there's a crying
> need for an operational admin user's guide to Mogile. If you're running
> the system in production (and many people do) here's just a
> smattering of the kind of questions you need to know:
> What are the best practices for tuning the system?
> How do you deal with failing drives/trackers/storage nodes?
> How do you do recovery?
> How do you setup different replication policies (with examples)?
> What does the fsck option do behind the scenes? When do you use it?
> What problem does the slave node solve and how do you work with it?
> What's the normal list of processes which runs on trackers/storage nodes?
> Are there sample startup/shutdown scripts for various architectures?
> What kind of monitoring should be done to measure the health of the 
> system?
> How exactly do you get detailed statistics out of the system (beyond 
> mogadm stats)?
> How do you debug the system?
> What are the metadata storage features and how and when do you use them?
> What's an example setup (i.e. show the config files!) with Perlbal as 
> a proxy?
> How do you measure performance of the system?
> How do you thoroughly test the functionality of the system?
> How do you stress test the system?
> I'm sure there are others. Some of these I've seen asked on the
> mailing list, many I have not but I assume people running production
> servers have the answers.
> This is either fodder for a FAQ or something a bit more organized and 
> kept
> up to date.
> And before you ask, I certainly don't have all the answers :)

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