ZFS: cannot receive new filesystem stream: out of space

[john]

I'm getting the error message:

cannot receive new filesystem stream: out of space
warning: cannot send
'zroot/ROOT/default at zfs-auto-snap_daily-2019-11-17-00h07': signal received

when sending a snapshot in a scripted backup. The lines leading to this
error are:

# Connect isci device
iscsictl -A -n t4
sleep 4

# Take pool online
zpool import backups
sleep 4

# Replicate zroot pool to backups
zxfer -dFkPv -R zroot backups


As I understand the documentation, there should be plenty of space. The
destination system shows:

# zpool list exportpool
NAME         SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP
 HEALTH  ALTROOT
exportpool  5.44T   136G  5.30T        -         -     2%     2%  1.00x
 ONLINE  -

# zfs list exportpool/backups/polya
NAME                       USED  AVAIL  REFER  MOUNTPOINT
exportpool/backups/polya  61.9G  5.05T  32.6G  -

# zfs list -o quota exportpool/backups/polya
QUOTA
    -

Both the sender and receiver are up-to-date:

12.1-RELEASE-p1 FreeBSD 12.1-RELEASE-p1 r354656 GENERIC  amd64


-- 

John R. Shannon
john at johnrshannon.com

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