Looks like Kip Macy just MFC’d ZFS version 13 to RELENG_7. The
src/UPDATING message is:
20090520 Update ZFS to version 13. ZFS users will need to re-build kernel and world. Existing pools will continue to work without upgrade. If a pool is upgraded it will no longer be usable by older kernel revs. ZFS send / recv between pool version 6 and pool version 13 is not supported.
I’m not going to list off all the commits, but below is the commit message.
SVN rev 192498 on 2009-05-20 23:34:59Z by kmacy MFC ZFS version 13. This includes the changes by pjd (see original message below) as well as the following: - the recurring deadlock was fixed by deferring vinactive to a dedicated thread - zfs boot for all pool types now works Submitted by: dfr - kmem now goes up to 512GB so arc is now limited by physmem - the arc now experiences backpressure from the vm (which can be too much - but this allows ZFS to work without any tunables on amd64) - frequently recurring LOR in the ARC fixed - zfs send coredump fix - fixes for various PRs Supported by: Barrett Lyon, BitGravity Revision 185029 - (view) (annotate) - [select for diffs] Modified Mon Nov 17 20:49:29 2008 UTC (6 months ago) by pjd File length: 38244 byte(s) Diff to previous 177698 Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes. This bring huge amount of changes, I'll enumerate only user-visible changes: - Delegated Administration Allows regular users to perform ZFS operations, like file system creation, snapshot creation, etc. - L2ARC Level 2 cache for ZFS - allows to use additional disks for cache. Huge performance improvements mostly for random read of mostly static content. - slog Allow to use additional disks for ZFS Intent Log to speed up operations like fsync(2). - vfs.zfs.super_owner Allows regular users to perform privileged operations on files stored on ZFS file systems owned by him. Very careful with this one. - chflags(2) Not all the flags are supported. This still needs work. - ZFSBoot Support to boot off of ZFS pool. Not finished, AFAIK. Submitted by: dfr - Snapshot properties - New failure modes Before if write requested failed, system paniced. Now one can select from one of three failure modes: Before if write requested failed, system paniced. Now one can select from one of three failure modes: - panic - panic on write error - wait - wait for disk to reappear - continue - serve read requests if possible, block write requests - Refquota, refreservation properties Just quota and reservation properties, but don't count space consumed by children file systems, clones and snapshots. - Sparse volumes ZVOLs that don't reserve space in the pool. - External attributes Compatible with extattr(2). - NFSv4-ACLs Not sure about the status, might not be complete yet. Submitted by: trasz - Creation-time properties - Regression tests for zpool(8) command. Obtained from: OpenSolaris
Existing users of ZFS on RELENG_7 will need to upgrade both world and kernel. Once in single-user mode, use
zpool upgrade [pool] to upgrade the pool version, and
zfs upgrade [fs] to upgrade the filesystem version. You can run either command without a pool or fs specified to see what version is currently in use on the disk(s). NOTE: These are not reversible, so consider yourself warned.
Big thanks to
kmacy and others who were involved in making this MFC happen.