checpoint

SCCS-vsn: sys/ufs/lfs/TODO 5.5

diff --git a/usr/src/sys/ufs/lfs/TODO b/usr/src/sys/ufs/lfs/TODO
index 31a159d..32dd83f 100644 (file)
--- a/usr/src/sys/ufs/lfs/TODO
+++ b/usr/src/sys/ufs/lfs/TODO
@@ -1,8 +1,19 @@
-#      @(#)TODO        5.4 (Berkeley) %G%
-
-TODO:  =======================
+#      @(#)TODO        5.5 (Berkeley) %G%

 
 Keith:
 
 Keith:

+       Why not delete the lfs_bmapv call, just mark everything dirty
+               that isn't deleted/truncated?  Get some numbers about
+               what percentage of the stuff that the cleaner thinks
+               might be live is live.  If it's high, get rid of lfs_bmapv.
+       Currently, inodes are being flushed to disk synchronously upon
+               creation -- see ufs_makeinode.  However, only the inode
+               is flushed, the directory "name" is written using VOP_BWRITE,
+               so it's not synchronous.  Possible solutions: 1: get some
+               ordering in the writes so that inode/directory entries get
+               stuffed into the same segment.  2: do both synchronously
+               3: add Mendel's information into the stream so we log
+               creation/deletion of inodes.  4: do some form of partial
+               segment when changing the inode (creation/deletion/rename).

        Fix i_block increment for indirect blocks.
        If the file system is tar'd, extracted on top of another LFS, the
                IFILE ain't worth diddly.  Is the cleaner writing the IFILE?
        Fix i_block increment for indirect blocks.
        If the file system is tar'd, extracted on top of another LFS, the
                IFILE ain't worth diddly.  Is the cleaner writing the IFILE?


@@ -17,6 +28,8 @@ Keith:
                to be written?  (Different numbering of indirect blocks.)
 
 Margo:
                to be written?  (Different numbering of indirect blocks.)
 
 Margo:

+       Fix the use of the dinode spare field to use the generation number
+               instead.

        Unmount; not doing a bgetvp (VHOLD) in lfs_newbuf call.
        Document in the README file where the checkpoint information is
                on disk.
        Unmount; not doing a bgetvp (VHOLD) in lfs_newbuf call.
        Document in the README file where the checkpoint information is
                on disk.