[LUDOC-151] least qunit is 1K but not 1000

Tue, 4 Jun 2013 17:22:42 +0000

To reduce quota requests, quota space is initially allocated to QSDs in very large chunks. How much unused quota space can be hold by a target is controlled by the qunit size. When quota space for a given ID is close to exhaustion on the QMT, the qunit size is reduced and QSDs are notified of the new qunit size value via a glimpse callback. Slaves are then responsible for releasing quota space above the new qunit value. The qunit size isn't shrunk indefinitely and there is a minimal value of 1MB for blocks and 1,000 for inodes. This means that the quota space rebalancing process will stop when this mininum value is reached. As a result, quota exceeded can be returned while many slaves still have 1MB or 1,000 inodes of spare quota space.

The '1,000' should be replaced with 1,024 since the least inode qunit is 1K but not 1000.

Whamcloud Community JIRA

[LUDOC-151] least qunit is 1K but not 1000