Re: [Mysqlfs-general] why fsck should not be run every mount

[Michal L. <mi...@lo...>]

Smart Weblications GmbH, Florian Wiessner wrote:
> hi list,
> 
> 
> i think we should make a binary fsck.mysqlfs without
> having mysqlfs to do fsck everytime a fs is mounted.
> 
> why this? because if you attend to use mysqlfs with mysql5 ndb you are
> running into trouble.
> 
> if some other servers are still using the fs via mysql-nbd, there
> is a risk of destroying data when the fsck is run, when there are
> still active nodes running using the fs.
> 
> so we should build fsck.mysqlfs in a seperate binary.
> 
> 
> what do you think?

I think that you shouldn't have mysqlfs mounted concurrently from 
different clients at all. IIRC There is some locking that synchronizes 
threads of the same process, but this locking doesn't span across 
different processes / hosts.

MySQL fs isn't meant to be a clustered filesystem. Well, maybe later, 
but not now.

Michal