Large-scale production installations, and another question

[dormando]

> so if no_verify=0, then it issues a HEAD to see if the file exists, if
> so, it replies back "yes, i have the file" to the tracker, which
> combines those replies from the various storage nodes marked as the
> ones that have it, and then sends that to the client?
> 
> couldn't there be a process which runs constantly and knocks out nodes
> with invalid HEAD replies as being out of date/needing fixed (i'm sure
> those tools exist and i just don't have enough experience with
> mogilefs yet...)

fsck. the verify option is for more realtime fun. I try to let fsck do
its thing and take a minor hit for the speed increase.