Lustre 1.6 Operations Manual

To enable quotas automatically when the filesystem is started, you must set the
mdt.quota_type and ost.quota_type parameters, respectively, on the MDT and
OSTs. The parameters can be set to the string u (user), g (group) or ug for both users
and groups.
You can enable quotas at mkfs time (mkfs.lustre --param mdt.quota_type=
ug) or with tunefs.lustre. As an example:
tunefs.lustre --param ost.quota_type=ug $ost_dev
9.1.1.1 Administrative and Operational Quotas
Lustre has two kinds of quota files:
■
■
Administrative quotas (for the MDT), which contain limits for users/groups for
the entire cluster.
Operational quotas (for the MDT and OSTs), which contain quota information
dedicated to a cluster node.
Lustre 1.6.5 introduces a new quota format (v2), for administrative quota files, with
continued support for the old quota format (v1). 1 The mdt.quota_type parameter
also handles ‘1’ and ‘2’ options to specify the version of Lustre quota that will be
used. For example:
--param mdt.quota_type=ug1
--param mdt.quota_type=u2
In a future Lustre release, the v2 format will be added to operational quotas, with
continued support for the v1 format. When v2 support is added, then the
ost.quota_type parameter will handle the ‘1’ and ‘2’ options.
For more information about the v1 and v2 formats, see Quota File Formats.
1. By default, Lustre 1.6.5 uses the v2 format for administrative quotas. Previous releases use quota v1.
Chapter 9 Configuring Quotas 9-3