Re: [Moosefs-users] Why is it increasing my DEL_LIMIT when I don't want it to!

[Ólafur Ó. <osv...@ne...>]

We have the exact same problem, chunk deletions have caused problems in the past and we have DEL_LIMIT set at 5, but mfsmaster increases it to 40-50 right away and sometimes goes to 70/s

This is also the case for chunk replications, it does not seem to honor the mfsmaster.cfg settings, although that does not get logged.

/Oli

On 22.9.2011, at 05:03, wk...@bn... wrote:

> Ok, we deleted a couple hundred thousand files from a large Maildir 
> folder set.
> 
> We have had problems with deletions overwhelming the cluster in the 
> past, so we have a DEL_LIMIT set to 20 (which we will probably lower)
> 
> But when the expiretime hit, the server became lethargic. in checking 
> the logs I see this
> 
> Sep 21 21:10:31 mfs1master mfsmaster[2373]: DEL_LIMIT temporary 
> increased to: 26/s
> Sep 21 21:15:30 mfs1master mfsmaster[2373]: DEL_LIMIT temporary 
> increased to: 33/s
> Sep 21 21:55:24 mfs1master mfsmaster[2373]: DEL_LIMIT decreased back to: 
> 26/s
> 
> OK, WHY IS DOING THIS! I told it no more than 20
> 
> I do NOT want this, it kills my server and we've learned the hard way it 
> can really screw up VM images (they go read-only) if the deletions 
> overwhelm the cluster.
> 
> 
> -bill
> 
> 
> 
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--
Ólafur Osvaldsson
System Administrator
Nethonnun ehf.
e-mail: osv...@ne...
phone: +354 517 3400