On Wed, Oct 28, 2020 at 07:40:10PM +0800, Gao Xiang wrote:
> This allows shrinking operation can pass into kernel.
>
> Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxx>
> ---
> preliminary version.
...which is going to need a manpage update:
"-d | -D size
"Specifies that the data section of the filesystem should be resized. If
the -D size option is given, the data section is changed to that size,
otherwise the data section is grown to the largest size possible with
the -d option. The size is expressed in filesystem blocks. A filesystem
with only 1 AG cannot be shrunk further, and a filesystem cannot be
shrunk to the point where it would only have 1 AG."
--D
>
> growfs/xfs_growfs.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/growfs/xfs_growfs.c b/growfs/xfs_growfs.c
> index a68b515d..d45ba703 100644
> --- a/growfs/xfs_growfs.c
> +++ b/growfs/xfs_growfs.c
> @@ -246,12 +246,11 @@ main(int argc, char **argv)
> error = 1;
> }
>
> - if (!error && dsize < geo.datablocks) {
> - fprintf(stderr, _("data size %lld too small,"
> - " old size is %lld\n"),
> + if (!error && dsize < geo.datablocks)
> + fprintf(stderr,
> +_("[EXPERIMENTAL] try to shrink unused space %lld, old size is %lld\n"),
> (long long)dsize, (long long)geo.datablocks);
> - error = 1;
> - } else if (!error &&
> + if (!error &&
> dsize == geo.datablocks && maxpct == geo.imaxpct) {
> if (dflag)
> fprintf(stderr, _(
> --
> 2.18.1
>
