| commit | 10847aebf586c31b92c505406a974ad3496872d4 | |
| author | Matthew Dillon <dillon@dragonflybsd.org> | |
| Sat, 26 Apr 2008 02:54:00 +0000 (26 02:54 +0000) | ||
| committer | Matthew Dillon <dillon@dragonflybsd.org> | |
| Sat, 26 Apr 2008 02:54:00 +0000 (26 02:54 +0000) | ||
| tree | 9d62b33893325730e5fe360ee8f973718f944000 | treesnapshot (tar.gz zip) |
| parent | bc163ba4211247ddc28b40caa535fd971e9feebf | commitdiff |
HAMMER 38D/Many: Undo/Synchronization and crash recovery
* The flusher now waits for I/O to complete at the appropriate points.
* Implement instant crash recovery. The UNDO FIFO is scanned backwards
and reapplied to the filesystem on mount. There is still more work
to do here, inode<->inode associations (e.g. directory entry vs file)
are not yet bound together.
* Clean up I/O sequencing a lot and get rid of a ton of unnecessary flusher
wakeups.
* The flusher now waits for I/O to complete at the appropriate points.
* Implement instant crash recovery. The UNDO FIFO is scanned backwards
and reapplied to the filesystem on mount. There is still more work
to do here, inode<->inode associations (e.g. directory entry vs file)
are not yet bound together.
* Clean up I/O sequencing a lot and get rid of a ton of unnecessary flusher
wakeups.