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Solaris Volume Manager Administration Guide Oracle Solaris 10 1/13 Information Library |
1. Getting Started With Solaris Volume Manager
2. Storage Management Concepts
3. Solaris Volume Manager Overview
4. Solaris Volume Manager for Sun Cluster (Overview)
5. Configuring and Using Solaris Volume Manager (Scenario)
8. RAID-0 (Stripe and Concatenation) Volumes (Overview)
9. RAID-0 (Stripe and Concatenation) Volumes (Tasks)
10. RAID-1 (Mirror) Volumes (Overview)
Overview of RAID-1 (Mirror) Volumes
Scenario--RAID-1 (Mirror) Volume
Providing RAID-1+0 and RAID-0+1
RAID-1 Volume (Mirror) Resynchronization
Creating and Maintaining RAID-1 Volumes
Configuration Guidelines for RAID-1 Volumes
Performance Guidelines for RAID-1 Volumes
RAID-1 Volume Read-and-Write Policies
Understanding Submirror Status to Determine Maintenance Actions
Scenario--RAID-1 Volumes (Mirrors)
11. RAID-1 (Mirror) Volumes (Tasks)
12. Soft Partitions (Overview)
16. Hot Spare Pools (Overview)
20. Maintaining Solaris Volume Manager (Tasks)
21. Best Practices for Solaris Volume Manager
22. Top-Down Volume Creation (Overview)
23. Top-Down Volume Creation (Tasks)
24. Monitoring and Error Reporting (Tasks)
25. Troubleshooting Solaris Volume Manager (Tasks)
A. Important Solaris Volume Manager Files
B. Solaris Volume Manager Quick Reference
Sometimes, you may need to boot a system with mirrors for root (/), /usr, and swap, the so-called “boot” file systems, into single-user mode (by using the boot -s command). In this case, these mirrors and possibly all mirrors on the system will appear in the “Needing Maintenance” state when viewed with the metastat command. Furthermore, if writes occur to these slices, the metastat command shows an increase in dirty regions on the mirrors.
This situation appears to be potentially dangerous. However, the metasync -r command, which normally runs during boot to resynchronize mirrors, is interrupted when the system is booted into single-user mode. Once the system is rebooted, the metasync -r command will run and resynchronize all mirrors.
If this situation is a concern, you can run the metasync -r command manually.