E2fsck and large file
Theodore Tso
tytso at mit.edu
Sat Apr 25 16:47:17 UTC 2009
On Sat, Apr 25, 2009 at 12:19:57AM -0700, Christian Kujau wrote:
> On Fri, 24 Apr 2009, Eric Sandeen wrote:
> >> How big is a file that e2fsck considers it to be a large file?
> > if (LINUX_S_ISREG(inode->i_mode) &&
> > (inode->i_size_high || inode->i_size & 0x80000000UL))
> > ctx->large_files++;
> > 2G or greater.
>
> I was tempted to reply the same, but:
>
> # mkfs.ext4 -q /dev/md0
> # fsck.ext4 -fv /dev/md0
> e2fsck 1.41.5 (23-Apr-2009)
> [...]
> 11 inodes used (0.00%)
> 0 non-contiguous files (0.0%)
> 0 non-contiguous directories (0.0%)
> # of inodes with ind/dind/tind blocks: 0/0/0
> Extent depth histogram: 1
> 33640 blocks used (3.45%)
> 0 bad blocks
> 1 large file <--- so, there's at least one file (inode?)
> considered a large file right from the
> beginning?
It's the resize inode; because of how it's built, it appears to be a
very large sparse file.
- Ted
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