lkml.org 
[lkml]   [2007]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH] ChunkFS: fs fission for faster fsck
On Wed, Apr 25, 2007 at 03:47:10PM -0700, Valerie Henson wrote:
> Actually, there is an upper limit on the number of continuation
> inodes. Each file can have a maximum of one continuation inode per
> chunk. (This is why we need to support sparse files.)

How about this case:

Growing file starts in chunk A.
Overflows into chunk B.
Delete file in chunk A.
Growing file overflows chunk B and spots new free space in
chunk A (and nothing anywhere else)
Overflows into chunk A
Delete file in chunk B.
Overflow into chunk B again.

Maybe this is not realistic, but in the absence of a mechanism to pull
data back from an overflow chunk, it seems at least a theoretical
possibility that there could be > 1 continuation inodes per file per
chunk.
Jeff

--
Work email - jdike at linux dot intel dot com
-
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/

\
 
 \ /
  Last update: 2007-04-26 16:25    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site