btrfs send handle missing space on target device

btrfs send handle missing space on target device

[GEO]

Hi,

I wonder how I should handle missing space on the backup device when doing 
incremental backup with btrfs send?
I mean for the initial bootstrap it is easy, I simply compare the free space 
of the target device with the size of home (we are talking about incremental 
backups of home), but how should I handle this with

sudo btrfs send -p @home-backup @home-backup | sudo btrfs receive /mnt/backup/

What will happen by default if the space on the target is not enough? Will the 
command start writing to  /mnt/backup/ at all and stop when the disk is full, 
or will it return an error code? If it doesn't return an error code, how can I 
handle this before the transaction?

Thanks in advance!