ZFS Pool Version 7
This page describes the features available with version 7 of the ZFS on-disk format. This version includes support for the following feature:
The ZFS Intent Log (ZIL) satisfies the need of some applications to know tthe data they changed is on stable storage on return from a system call. The Intent Log holds records of those system calls and they are replayed if the system power fails or panics if they have not been committed to the main pool. When the Intent Log is allocated from the main pool, it allocates blocks that chain through the pool. This version adds the capability to specify a separate Intent Log device or devices.
This feature is available in:
- Solaris Express Community Edition, build 68
- Solaris 10 10/08 release
The related bug for the version 7 change is:
- 6339640 Make ZIL use NVRAM when available
on 2009/11/02 20:34