[lustre-discuss] MDT partition getting full

[Colin Faber]

Do you have changelogs enabled?

On Wed, Apr 22, 2015 at 2:14 AM, Radu Popescu <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/
>
> - 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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>
>
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