hi,
2013/2/15 Hemanth Kumar <hemanthkumar51@xxxxxxxxx>:
>
> Signed-off-by: Hemanth Kumar <hemanthkumar51@xxxxxxxxx>
> ---
> hq.sh | 33 +++++++++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
> create mode 100644 hq.sh
>
> diff --git a/hq.sh b/hq.sh
> new file mode 100644
> index 0000000..6a0a820
> --- /dev/null
> +++ b/hq.sh
> @@ -0,0 +1,33 @@
> +#! /bin/bash
> +# Btrfs quotas test case
> +# Hi all,
> +# This is shell script to test the hierarchical quotas feature of Btrfs
> +# I created Btrfs filesystem on a new
> +# partition, then activated quota management ('btrfs quota enable'), and
> +# created a few subvolumes of multiple levels.
> +
> +
> +cleanup()
> +{
> + btrfs subvolume delete $TEST_DIR/vol1/vol2/vol3
> + btrfs subvolume delete $TEST_DIR/vol1/vol2
> + btrfs subvolume delete $TEST_DIR/vol1
> + btrfs subvolume disable $TEST_DIR
> +}
> +
> +#trap "_cleanup ; exit \$status" 0 1 2 3 15
> +
> +btrfs quota enable $TEST_DIR
> +echo "quota enabled on $TEST_DEV"
> +btrfs subvolume create $TEST_DIR/vol1
> +btrfs subvolume create $TEST_DIR/vol1/vol2
> +btrfs subvolume create $TEST_DIR/vol1/vol2/vol3
> +btrfs qgroup limit 5m $TEST_DIR/vol1
> +btrfs qgroup limit 3m $TEST_DIR/vol1/vol2
> +btrfs qgroup limit 2m $TEST_DIR/vol1/vol2/vol3
> +dd if=$TEST_DEV of=$TEST_DIR/vol1/vol2/vol3/file1 bs=3M count=1
> +dd if=$TEST_DEV of=$TEST_DIR/vol1/vol2/file1 bs=2M count=1
> +dd if=$TEST_DEV of=$TEST_DIR/vol1/file1 bs=5M count=1
btrfs quota limit is not precise. It allows a little deviation. So if
we limit a subvolume 3M,
what we can write must be less than 3M.
What's more, for a subvolume, metadata is included in a subvolume
quota...(4KB)..
What i really want to say is that btrfs quota is a little complex, To
test hierarchical quotas feature
still needs more things to consider...maybe you should have a deep
understanding of it firstly...
However, this is a good start i think. ^_^
Thanks,
Wang
> +
> +cleanup
> +exit
> --
> 1.8.1.2
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" 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-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
