Re: [MooseFS-Users] growing overgoal

[Agata Kruszona-Z. <ch...@mo...>]

W dniu 07.09.2020 o 15:17, Markus Köberl pisze:
> On Monday, 7 September 2020 12:19:42 CEST Agata Kruszona-Zawadzka wrote:
>>
>> W dniu 04.09.2020 o 15:22, Markus Köberl pisze:
>>> Since some time (last few versions of MooseFS) on a few chunkservers the used space grows above the default ACCEPTABLE_PERCENTAGE_DIFFERENCE = 1.0 till I restart the affected chunkserver.
>>> On the webinterface i see huge numbers for overgoal (even 4 extra copies).  After the restart of the chunkserver the overgoal goes down but starts growing again after some time.
>>
>> We have an issue in MooseFS currently, where on disks with I/O errors in
>> certain circustances some chunks get locked and cannot be deleted until
>> the whole chunk server process is restarted. We introduced a fix for
>> that, it's gonna be available in version 3.0.115. The issue does not
>> affect disks without I/O errors.
> 
> Thanks good to hear that a fix might be on the way.
> 
> Could it be that instead of "some chunks get locked and cannot be deleted" that there a no deletes at all on this chunk server, or might that be a different problem?

Yes, that's exactly it. By "some chunks" I meant that not every chunk is 
able to trigger the problem, but once it happens so that enough chunks 
do, then, due to operation limits (specifically deletions limit in this 
instance), the system won't attempt to delete any more chunks.

-- 
Regards,
Agata Kruszona-Zawadzka
MooseFS Team