User Quotas Deferred Update; Comstar Deferred Update - Oracle ZFS Storage Appliance Service Manual

User Quotas Deferred Update

To use this mode, the storage pool must be upgraded. If you choose not to upgrade the pool and
attempt to use this property, you will get an error indicating that the storage pool needs to be
upgraded first. There is no other implication of applying this update, and it can be ignored if
there is no need to use this new setting. Applying this update is equivalent to upgrading the on-
disk ZFS pool to ZFS Pool Version Summary.
Related Topics
Applying Deferred Updates BUI,
■
"Understanding Deferred Updates" on page 352
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User Quotas Deferred Update
With the 2009.Q3 software release, the system now supports user and group quotas on a per-
share basis. In order to make use of this feature, a deferred update must be applied to upgrade
all shares in the system to support this feature. Applying this deferred update also allows the
current usage (user or group) to be queried on a per-filesystem or per-project basis. To quote the
product documentation:
Quotas can be set on a user or group at the filesystem level. These enforce physical data usage
based on the POSIX or Windows identity of the owner or group of the file or directory. There
are some significant differences between user and group quotas and filesystem and project data
quotas.
This update is applied in the background, and takes time proportional to the number of shares
and amount of data on the system. Until this deferred update is finished, attempts to apply user
quotas produce an error indicating that the update is still in progress.
Before attempting to use user or group quotas, read
ZFS Storage Appliance Administration Guide, Release
Related Topics
Applying Deferred Updates BUI,
■
"Understanding Deferred Updates" on page 352
■

COMSTAR Deferred Update

The COMSTAR framework relies on a ZFS pool update for complete support of persistent
group reservations (PGRs). Before this update has been applied, the number of reservations
346 Oracle ZFS Storage Appliance Customer Service Manual • July 2016
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"Space Management for Shares" in Oracle
OS8.6.0.
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