[lustre-discuss] MDT partition getting full

[Radu Popescu]

Hi,

changelog is not enabled. I’ve checked /proc/fs/lustre/mdd/NAMEOFMDT/changelog_users and got:

current index: 0
ID    index

Thanks,
Radu


> On 22 Apr 2015, at 19:52, Colin Faber <cfaber at gmail.com> wrote:
> 
> Do you have changelogs enabled?
> 
> On Wed, Apr 22, 2015 at 2:14 AM, Radu Popescu <radu.popescu at amoma.com <mailto:radu.popescu at amoma.com>> wrote:
> Hi,
> 
> I have the following Lustre setup:
> 
> - servers
> - number: 9
> - Lustre version: 2.5.3
> - OS: CentOS 6.6
> - RPM URL: https://downloads.hpdd.intel.com/public/lustre/lustre-2.5.3/el6/server/RPMS/ <https://downloads.hpdd.intel.com/public/lustre/lustre-2.5.3/el6/server/RPMS/>
> 
> - clients
> - number: 90
> - Lustre version: 2.5.56
> - OS: Debian Wheezy
> - Packages were manually created from sources
> - all clients have all 9 Lustre mountpoints
> 
> Lustre setup:
> 
> MGS + MDT + OST all stay on a single LUN which has a VG (160GB) created and 3 LVs for each of the partitions, all mounted on each server:
> 
> MGS - 4GB
> MDT - 78.12GB
> OST - 78.14GB
> 
> (I’ve chosen a comparable size for MDT and OST because of the small file size)
> - Total number of files is at around 16 million, sizes between <1K and 1.7MB. They are not equally spread on all mountpoints so let’s say I have a 2M maximum number of files on a Lustre volume.
> 
> My problem is that MDT partition is getting full. Inodes are fine, only 3% used, which is ok, but the space used is > 50% used, and constantly dropping. So I think that within a week, I’ll be out of storage on all MDT partitions. And I didn’t specify any special options when creating MDT partitions, so bytes per inode should be at 16K (default setting).
> 
> Anyone has any ideas?
> 
> Thanks,
> Radu
> 
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