On Wed, Sep 11, 2013 at 04:03:42PM -0500, Eric Sandeen wrote:
> Sometimes we simply want to know what blocks are allocated to
> a file. By default, filefrag will show us inline data as well,
> printing an extent record (and extent count) whether it's inline
> or not.
>
> Add an "-i" switch to Ignore Inline data, so that when
> specified, the extent count & table output only reflects
> normally allocated blocks.
>
> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
- Zheng
> ---
>
> diff --git a/misc/filefrag.8.in b/misc/filefrag.8.in
> index a6d7b27..6b2ce1d 100644
> --- a/misc/filefrag.8.in
> +++ b/misc/filefrag.8.in
> @@ -8,7 +8,7 @@ filefrag \- report on file fragmentation
> .BI \-b blocksize
> ]
> [
> -.B \-BeksvxX
> +.B \-BeiksvxX
> ]
> [
> .I files...
> @@ -43,6 +43,9 @@ is unspecified it defaults to 1024 bytes.
> .B \-e
> Print output in extent format, even for block-mapped files.
> .TP
> +.B \-i
> +Ignore all inline extent records in the extent table and counts.
> +.TP
> .BI \-k
> Use 1024\-byte blocksize for output (identical to '\-b 1024').
> .TP
> diff --git a/misc/filefrag.c b/misc/filefrag.c
> index 35b3544..4652606 100644
> --- a/misc/filefrag.c
> +++ b/misc/filefrag.c
> @@ -50,6 +50,7 @@ int sync_file = 0; /* fsync file before getting the mapping */
> int xattr_map = 0; /* get xattr mapping */
> int force_bmap; /* force use of FIBMAP instead of FIEMAP */
> int force_extent; /* print output in extent format always */
> +int no_inline; /* do not show FIEMAP_EXTENT_DATA_INLINE, only blocks */
> int logical_width = 8;
> int physical_width = 10;
> const char *ext_fmt = "%4d: %*llu..%*llu: %*llu..%*llu: %6llu: %s\n";
> @@ -135,8 +136,11 @@ static void print_extent_info(struct fiemap_extent *fm_extent, int cur_ex,
> char flags[256] = "";
>
> /* For inline data all offsets should be in bytes, not blocks */
> - if (fm_extent->fe_flags & FIEMAP_EXTENT_DATA_INLINE)
> + if (fm_extent->fe_flags & FIEMAP_EXTENT_DATA_INLINE) {
> + if (no_inline)
> + return;
> blk_shift = 0;
> + }
>
> ext_len = fm_extent->fe_length >> blk_shift;
> ext_blks = (fm_extent->fe_length - 1) >> blk_shift;
> @@ -229,6 +233,15 @@ static int filefrag_fiemap(int fd, int blk_shift, int *num_extents,
> }
>
> for (i = 0; i < fiemap->fm_mapped_extents; i++) {
> + if (fm_ext[i].fe_flags & FIEMAP_EXTENT_LAST)
> + last = 1;
> + /* Skip this extent if it's inline and we are ignoring */
> + if (no_inline &&
> + (fm_ext[i].fe_flags & FIEMAP_EXTENT_DATA_INLINE)) {
> + n++;
> + continue;
> + }
> +
> if (fm_ext[i].fe_logical != 0 &&
> fm_ext[i].fe_physical != expected) {
> tot_extents++;
> @@ -242,8 +255,6 @@ static int filefrag_fiemap(int fd, int blk_shift, int *num_extents,
> blk_shift, st);
>
> expected = fm_ext[i].fe_physical + fm_ext[i].fe_length;
> - if (fm_ext[i].fe_flags & FIEMAP_EXTENT_LAST)
> - last = 1;
> n++;
> }
>
> @@ -445,7 +456,7 @@ out_close:
>
> static void usage(const char *progname)
> {
> - fprintf(stderr, "Usage: %s [-b{blocksize}] [-BeklsvxX] file ...\n",
> + fprintf(stderr, "Usage: %s [-b{blocksize}] [-BeiklsvxX] file ...\n",
> progname);
> exit(1);
> }
> @@ -455,7 +466,7 @@ int main(int argc, char**argv)
> char **cpp;
> int c;
>
> - while ((c = getopt(argc, argv, "Bb::eksvxX")) != EOF)
> + while ((c = getopt(argc, argv, "Bb::eiksvxX")) != EOF)
> switch (c) {
> case 'B':
> force_bmap++;
> @@ -495,6 +506,9 @@ int main(int argc, char**argv)
> if (!verbose)
> verbose++;
> break;
> + case 'i':
> + no_inline++;
> + break;
> case 'k':
> blocksize = 1024;
> break;
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
