Re: [PATCH v4 2/3] fstests: test btrfs incremental send after moving a directory

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On Thu, Jan 12, 2017 at 03:13:37AM +0000, fdmanana@xxxxxxxxxx wrote:
> From: Filipe Manana <fdmanana@xxxxxxxx>
> 
> Test that an incremental send operation works after moving a directory
> into a new parent directory, deleting its previous parent directory and
> creating a new inode that has the same inode number as the old parent.
> 
> This issue is fixed by the following patch for the linux kernel:
> 
>   "Btrfs: incremental send, do not delay rename when parent inode is new"
> 
> Signed-off-by: Robbie Ko <robbieko@xxxxxxxxxxxx>
> Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>

I tested this patchset with/without proposed kernel patches, all tests
worked as expected. Just one tiny update on commit below.

> ---

> +# Remount the filesystem so that the next created inodes will have the numbers
> +# 258 and 259. This is because when a filesystem is mounted, btrfs sets the
> +# subvolume's inode counter to a value corresponding to the highest inode number
> +# in the subvolume plus 1. This inode counter is used to assign a unique number
> +# to each new inode and it's incremented by 1 after very inode creation.
> +# Note: we unmount and then mount instead of doing a mount with "-o remount"
> +# because otherwise the inode counter remains at value 260.
> +_scratch_unmount
> +_scratch_mount

I replaced these with _scratch_cycle_mount.

Thanks,
Eryu
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