Re: [PATCH v2 1/2] btrfs/301: fix hardcoded subvolids

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On Mon, Nov 20, 2023 at 9:10 PM Boris Burkov <boris@xxxxxx> wrote:
>
> Hardcoded subvolids break test runs with no free-space-tree, so change
> the test to use _btrfs_get_subvolid instead of assuming 256, 257, etc...
>
> Signed-off-by: Boris Burkov <boris@xxxxxx>

Reviewed-by: Filipe Manana <fdmanana@xxxxxxxx>

Now it looks good and actually works. Thanks.

> ---
>  tests/btrfs/301 | 171 +++++++++++++++++++++++++++++-------------------
>  1 file changed, 103 insertions(+), 68 deletions(-)
>
> diff --git a/tests/btrfs/301 b/tests/btrfs/301
> index 7a0b4c0e1..dbc6d9aef 100755
> --- a/tests/btrfs/301
> +++ b/tests/btrfs/301
> @@ -166,45 +166,63 @@ enable_quota()
>         $BTRFS_UTIL_PROG quota enable $arg $SCRATCH_MNT
>  }
>
> +get_subvid()
> +{
> +       _btrfs_get_subvolid $SCRATCH_MNT subv
> +}
> +
> +get_snapid()
> +{
> +       _btrfs_get_subvolid $SCRATCH_MNT snap
> +}
> +
> +get_nestedid()
> +{
> +       _btrfs_get_subvolid $SCRATCH_MNT subv/nested
> +}
> +
>  prepare()
>  {
>         _scratch_mkfs >> $seqres.full
>         _scratch_mount
>         enable_quota "s"
>         $BTRFS_UTIL_PROG subvolume create $subv >> $seqres.full
> -       set_subvol_limit 256 $limit
> -       check_subvol_usage 256 0
> +       local subvid=$(get_subvid)
> +       set_subvol_limit $subvid $limit
> +       check_subvol_usage $subvid 0
>
>         # Create a bunch of little filler files to generate several levels in
>         # the btree, to make snapshotting sharing scenarios complex enough.
>         $FIO_PROG $prep_fio_config --output=$fio_out
> -       check_subvol_usage 256 $total_fill
> +       check_subvol_usage $subvid $total_fill
>
>         # Create a single file whose extents we will explicitly share/unshare.
>         do_write $subv/f $ext_sz
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>  }
>
>  prepare_snapshotted()
>  {
>         prepare
>         $BTRFS_UTIL_PROG subvolume snapshot $subv $snap >> $seqres.full
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $(get_subvid) $(($total_fill + $ext_sz))
> +       check_subvol_usage $(get_snapid) 0
>  }
>
>  prepare_nested()
>  {
>         prepare
> +       local subvid=$(get_subvid)
>         $BTRFS_UTIL_PROG qgroup create 1/100 $SCRATCH_MNT
>         $BTRFS_UTIL_PROG qgroup limit $limit 1/100 $SCRATCH_MNT
> -       $BTRFS_UTIL_PROG qgroup assign 0/256 1/100 $SCRATCH_MNT >> $seqres.full
> +       $BTRFS_UTIL_PROG qgroup assign 0/$subvid 1/100 $SCRATCH_MNT >> $seqres.full
>         $BTRFS_UTIL_PROG subvolume create $nested >> $seqres.full
> +       local nestedid=$(get_nestedid)
>         do_write $nested/f $ext_sz
> -       check_subvol_usage 257 $ext_sz
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       local subv_usage=$(get_subvol_usage 256)
> -       local nested_usage=$(get_subvol_usage 257)
> +       check_subvol_usage $nestedid $ext_sz
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       local subv_usage=$(get_subvol_usage $subvid)
> +       local nested_usage=$(get_subvol_usage $nestedid)
>         check_qgroup_usage 1/100 $(($subv_usage + $nested_usage))
>  }
>
> @@ -213,9 +231,10 @@ basic_accounting()
>  {
>         echo "basic accounting"
>         prepare
> +       local subvid=$(get_subvid)
>         rm $subv/f
> -       check_subvol_usage 256 $total_fill
> -       cycle_mount_check_subvol_usage 256 $total_fill
> +       check_subvol_usage $subvid $total_fill
> +       cycle_mount_check_subvol_usage $subvid $total_fill
>         do_write $subv/tmp 512M
>         rm $subv/tmp
>         do_write $subv/tmp 512M
> @@ -244,20 +263,22 @@ snapshot_accounting()
>  {
>         echo "snapshot accounting"
>         prepare_snapshotted
> +       local subvid=$(get_subvid)
> +       local snapid=$(get_snapid)
>         touch $snap/f
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         do_write $snap/f $ext_sz
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 $ext_sz
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid $ext_sz
>         rm $snap/f
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         rm $subv/f
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> -       cycle_mount_check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
> +       cycle_mount_check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
>         _scratch_unmount
>  }
>
> @@ -266,15 +287,17 @@ delete_snapshot_src_ref()
>  {
>         echo "delete src ref first"
>         prepare_snapshotted
> +       local subvid=$(get_subvid)
> +       local snapid=$(get_snapid)
>         rm $subv/f
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         rm $snap/f
>         trigger_cleaner
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> -       cycle_mount_check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
> +       cycle_mount_check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
>         _scratch_unmount
>  }
>
> @@ -283,14 +306,16 @@ delete_snapshot_ref()
>  {
>         echo "delete snapshot ref first"
>         prepare_snapshotted
> +       local subvid=$(get_subvid)
> +       local snapid=$(get_snapid)
>         rm $snap/f
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         rm $subv/f
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> -       cycle_mount_check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
> +       cycle_mount_check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
>         _scratch_unmount
>  }
>
> @@ -299,19 +324,21 @@ delete_snapshot_src()
>  {
>         echo "delete snapshot src first"
>         prepare_snapshotted
> +       local subvid=$(get_subvid)
> +       local snapid=$(get_snapid)
>         $BTRFS_UTIL_PROG subvolume delete $subv >> $seqres.full
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         rm $snap/f
>         trigger_cleaner
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $snapid 0
>         $BTRFS_UTIL_PROG subvolume delete $snap >> $seqres.full
>         trigger_cleaner
> -       check_subvol_usage 256 0
> -       check_subvol_usage 257 0
> -       cycle_mount_check_subvol_usage 256 0
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid 0
> +       check_subvol_usage $snapid 0
> +       cycle_mount_check_subvol_usage $subvid 0
> +       check_subvol_usage $snapid 0
>         _scratch_unmount
>  }
>
> @@ -320,13 +347,15 @@ delete_snapshot()
>  {
>         echo "delete snapshot first"
>         prepare_snapshotted
> +       local subvid=$(get_subvid)
> +       local snapid=$(get_snapid)
>         $BTRFS_UTIL_PROG subvolume delete $snap >> $seqres.full
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
> +       check_subvol_usage $snapid 0
>         $BTRFS_UTIL_PROG subvolume delete $subv >> $seqres.full
>         trigger_cleaner
> -       check_subvol_usage 256 0
> -       check_subvol_usage 257 0
> +       check_subvol_usage $subvid 0
> +       check_subvol_usage $snapid 0
>         _scratch_unmount
>  }
>
> @@ -336,17 +365,19 @@ nested_accounting()
>  {
>         echo "nested accounting"
>         prepare_nested
> +       local subvid=$(get_subvid)
> +       local nestedid=$(get_nestedid)
>         rm $subv/f
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 $ext_sz
> -       local subv_usage=$(get_subvol_usage 256)
> -       local nested_usage=$(get_subvol_usage 257)
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $nestedid $ext_sz
> +       local subv_usage=$(get_subvol_usage $subvid)
> +       local nested_usage=$(get_subvol_usage $nestedid)
>         check_qgroup_usage 1/100 $(($subv_usage + $nested_usage))
>         rm $nested/f
> -       check_subvol_usage 256 $total_fill
> -       check_subvol_usage 257 0
> -       subv_usage=$(get_subvol_usage 256)
> -       nested_usage=$(get_subvol_usage 257)
> +       check_subvol_usage $subvid $total_fill
> +       check_subvol_usage $nestedid 0
> +       subv_usage=$(get_subvol_usage $subvid)
> +       nested_usage=$(get_subvol_usage $nestedid)
>         check_qgroup_usage 1/100 $(($subv_usage + $nested_usage))
>         do_enospc_falloc $nested/large_falloc 2G
>         do_enospc_write $nested/large 2G
> @@ -360,26 +391,27 @@ enable_mature()
>         _scratch_mkfs >> $seqres.full
>         _scratch_mount
>         $BTRFS_UTIL_PROG subvolume create $subv >> $seqres.full
> +       local subvid=$(get_subvid)
>         do_write $subv/f $ext_sz
>         # Sync before enabling squotas to reliably *not* count the writes
>         # we did before enabling.
>         sync
>         enable_quota "s"
> -       set_subvol_limit 256 $limit
> +       set_subvol_limit $subvid $limit
>         _scratch_cycle_mount
> -       usage=$(get_subvol_usage 256)
> +       usage=$(get_subvol_usage $subvid)
>         [ $usage -lt $ext_sz ] || \
>                 echo "captured usage from before enable $usage >= $ext_sz"
>         do_write $subv/g $ext_sz
> -       usage=$(get_subvol_usage 256)
> +       usage=$(get_subvol_usage $subvid)
>         [ $usage -lt $ext_sz ] && \
>                 echo "failed to capture usage after enable $usage < $ext_sz"
> -       check_subvol_usage 256 $ext_sz
> +       check_subvol_usage $subvid $ext_sz
>         rm $subv/f
> -       check_subvol_usage 256 $ext_sz
> +       check_subvol_usage $subvid $ext_sz
>         _scratch_cycle_mount
>         rm $subv/g
> -       check_subvol_usage 256 0
> +       check_subvol_usage $subvid 0
>         _scratch_unmount
>  }
>
> @@ -388,13 +420,14 @@ reflink_accounting()
>  {
>         echo "reflink"
>         prepare
> +       local subvid=$(get_subvid)
>         # Do enough reflinks to prove that they're free. If they counted, then
>         # this wouldn't fit in the limit.
>         for i in $(seq $(($limit_nr * 2))); do
>                 _cp_reflink $subv/f $subv/f.i
>         done
>         # Confirm that there is no additional data usage from the reflinks.
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>         _scratch_unmount
>  }
>
> @@ -403,12 +436,13 @@ delete_reflink_src_ref()
>  {
>         echo "delete reflink src ref"
>         prepare
> +       local subvid=$(get_subvid)
>         _cp_reflink $subv/f $subv/f.link
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>         rm $subv/f
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>         rm $subv/f.link
> -       check_subvol_usage 256 $(($total_fill))
> +       check_subvol_usage $subvid $(($total_fill))
>         _scratch_unmount
>  }
>
> @@ -417,12 +451,13 @@ delete_reflink_ref()
>  {
>         echo "delete reflink ref"
>         prepare
> +       local subvid=$(get_subvid)
>         _cp_reflink $subv/f $subv/f.link
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>         rm $subv/f.link
> -       check_subvol_usage 256 $(($total_fill + $ext_sz))
> +       check_subvol_usage $subvid $(($total_fill + $ext_sz))
>         rm $subv/f
> -       check_subvol_usage 256 $(($total_fill))
> +       check_subvol_usage $subvid $(($total_fill))
>         _scratch_unmount
>  }
>
> --
> 2.42.0
>
>





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