On Tue, 18 Sep 2007 17:25:31 -0700
Avantika Mathur <mathur@linux.vnet.ibm.com> wrote:

quoted text
> In pass1 of e2fsck, every inode table in the fileystem is scanned and checked, 
> regardless of whether it is in use.  This is this the most time consuming part 
> of the filesystem check.  The unintialized block group feature can greatly 
> reduce e2fsck time by eliminating checking of uninitialized inodes.  
> 
> With this feature, there is a a high water mark of used inodes for each block 
> group.  Block and inode bitmaps can be uninitialized on disk via a flag in the
> group descriptor to avoid reading or scanning them at e2fsck time.  A checksum
> of each group descriptor is used to ensure that corruption in the group
> descriptor's bit flags does not cause incorrect operation.

This needed a few fixups due to conflicts with
ext2-ext3-ext4-add-block-bitmap-validation.patch but they were pretty
straightforward.  Please check that the result is OK.


-
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/