Re: [PATCH 01/10] Btrfs: Fix the problem that the replace destroys the seed filesystem

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On Thu, Jul 24, 2014 at 11:37:06AM +0800, Miao Xie wrote:
> The seed filesystem was destroyed by the device replace, the reproduce
> method is:
>  # mkfs.btrfs -f <dev0>
>  # btrfstune -S 1 <dev0>
>  # mount <dev0> <mnt>
>  # btrfs device add <dev1> <mnt>
>  # umount <mnt>
>  # mount <dev1> <mnt>
>  # btrfs replace start -f <dev0> <dev2> <mnt>
>  # umount <mnt>
>  # mount <dev0> <mnt>
> 
> It is because we erase the super block on the seed device. It is wrong,
> we should not change anything on the seed device.
> 
> Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>

Reviewed-by: David Sterba <dsterba@xxxxxxx>
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