Lustre 1.6 Operations Manual

9. Configuring Quotas 9–1
9.1 Working with Quotas 9–1
9.1.1 Enabling Disk Quotas 9–2
9.1.2 Creating Quota Files and Quota Administration 9–4
9.1.3 Resetting the Quota 9–6
9.1.4 Quota Allocation 9–6
9.1.5 Known Issues with Quotas 9–10
9.1.6 Lustre Quota Statistics 9–12
10. RAID 10–1
10.1 Considerations for Backend Storage 10–1
10.1.1 Reliability 10–2
10.1.2 Selecting Storage for the MDS and OSS 10–2
10.1.3 Understanding Double Failures with Software and Hardware
RAID5 10–3
10.1.4 Performance Considerations 10–4
10.1.5 Formatting 10–4
10.2 Insights into Disk Performance Measurement 10–5
10.2.1 Sample Graphs 10–9
10.3 Creating an External Journal 10–13
11. Kerberos 11–1
11.1 What is Kerberos? 11–1
11.2 Lustre Setup with Kerberos 11–2
11.2.1 Configuring Kerberos for Lustre 11–2
11.2.2 Types of Lustre-Kerberos Flavors 11–11
x Lustre 1.6 Operations Manual • September 2008