I have a replication task, which fails and then trows this up:
[EFAULT] full send of Internal@auto-20260408.000000 estimated size is 47.1K full send of Internal/KeePass@auto-20260223.231925 estimated size is 3.52M send from @auto-20260223.231925 to Internal/KeePass@auto-20260408.000000 estimated size is 94.1K full send of Internal/Backup@auto-20260223.231925 estimated size is 17.7T send from @auto-20260223.231925 to Internal/Backup@auto-20260408.000000 estimated size is 2.14T full send of Internal/RClone@auto-20260223.231925 estimated size is 51.1K send from @auto-20260223.231925 to Internal/RClone@auto-20260408.000000 estimated size is 4.61K full send of Internal/ix-apps@auto-20260408.000000 estimated size is 86.1K full send of Internal/ix-apps/app_configs@auto-20260223.231925 estimated size is 3.98M send from @auto-20260223.231925 to Internal/ix-apps/app_configs@auto-20260408.000000 estimated size is 4.61K full send of Internal/ix-apps/truenas_catalog@auto-20260408.000000 estimated size is 233M full send of Internal/ix-apps/docker@auto-20260408.000000 estimated size is 3.58G full send of Internal/ix-apps/app_mounts@auto-20260408.000000 estimated size is 42.6K full send of Internal/ix-apps/app_mounts/urbackup@auto-20260408.000000 estimated size is 42.6K full send of Internal/ix-apps/app_mounts/urbackup/database@auto-20260223.231925 estimated size is 69.2M send from @auto-20260223.231925 to Internal/ix-apps/app_mounts/urbackup/database@auto-20260408.000000 estimated size is 4.61K full send of Internal/ix-apps/app_mounts/urbackup/backups@auto-20260223.231925 estimated size is 97.7G send from @auto-20260223.231925 to Internal/ix-apps/app_mounts/urbackup/backups@auto-20260408.000000 estimated size is 4.61K full send of Internal/ix-apps/app_mounts/urbackup/logs@auto-20260408.000000 estimated size is 76.6M full send of Internal/AbacusLaw@auto-20260223.231925 estimated size is 45.9G send from @auto-20260223.231925 to Internal/AbacusLaw@auto-20260408.000000 estimated size is 4.61K full send of Internal/.system@auto-20260223.231925 estimated size is 1.70G send from @auto-20260223.231925 to Internal/.system@auto-20260408.000000 estimated size is 32.6K full send of Internal/.system/cores@auto-20260213.120742 estimated size is 54.6K send from @auto-20260213.120742 to Internal/.system/cores@auto-20260213.130000 estimated size is 624B send from @auto-20260213.130000 to Internal/.system/cores@auto-20260214.130000 estimated size is 624B send from @auto-20260214.130000 to Internal/.system/cores@auto-20260215.130000 estimated size is 624B send from @auto-20260215.130000 to Internal/.system/cores@auto-20260216.130000 estimated size is 624B send from @auto-20260216.130000 to Internal/.system/cores@auto-20260217.130000 estimated size is 624B send from @auto-20260217.130000 to Internal/.system/cores@auto-20260218.130000 estimated size is 624B send from @auto-20260218.130000 to Internal/.system/cores@auto-20260219.130000 estimated size is 624B send from @auto-20260219.130000 to Internal/.system/cores@auto-20260220.130000 estimated size is 82.0M send from @auto-20260220.130000 to Internal/.system/cores@auto-20260221.130000 estimated size is 624B send from @auto-20260221.130000 to Internal/.system/cores@auto-20260222.130000 estimated size is 8.74M send from @auto-20260222.130000 to Internal/.system/cores@auto-20260223.231925 estimated size is 624B send from @auto-20260223.231925 to Internal/.system/cores@auto-20260408.000000 estimated size is 44.6K full send of Internal/.system/nfs@auto-20260213.120742 estimated size is 52.1K send from @auto-20260213.120742 to Internal/.system/nfs@auto-20260213.130000 estimated size is 624B send from @auto-20260213.130000 to Internal/.system/nfs@auto-20260214.130000 estimated size is 624B send from @auto-20260214.130000 to Internal/.system/nfs@auto-20260215.130000 estimated size is 624B send from @auto-20260215.130000 to Internal/.system/nfs@auto-20260216.130000 estimated size is 624B send from @auto-20260216.130000 to Internal/.system/nfs@auto-20260217.130000 estimated size is 624B send from @auto-20260217.130000 to Internal/.system/nfs@auto-20260218.130000 estimated size is 624B send from @auto-20260218.130000 to Internal/.system/nfs@auto-20260219.130000 estimated size is 624B send from @auto-20260219.130000 to Internal/.system/nfs@auto-20260220.130000 estimated size is 624B send from @auto-20260220.130000 to Internal/.system/nfs@auto-20260223.231925 estimated size is 624B send from @auto-20260223.231925 to Internal/.system/nfs@auto-20260408.000000 estimated size is 42.1K full send of Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260213.120742 estimated size is 354M send from @auto-20260213.120742 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260213.130000 estimated size is 594K send from @auto-20260213.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260214.130000 estimated size is 18.2M send from @auto-20260214.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260215.130000 estimated size is 16.5M send from @auto-20260215.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260216.130000 estimated size is 12.1M send from @auto-20260216.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260217.130000 estimated size is 12.5M send from @auto-20260217.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260218.130000 estimated size is 11.6M send from @auto-20260218.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260219.130000 estimated size is 11.9M send from @auto-20260219.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260220.130000 estimated size is 13.6M send from @auto-20260220.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260221.130000 estimated size is 7.27M send from @auto-20260221.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260222.130000 estimated size is 12.3M send from @auto-20260222.130000 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260223.231925 estimated size is 13.5M send from @auto-20260223.231925 to Internal/.system/netdata-ae32c386e13840b2bf9c0083275e7941@auto-20260408.000000 estimated size is 309M full send of Internal/.system/vm@auto-20260223.231925 estimated size is 43.1K send from @auto-20260223.231925 to Internal/.system/vm@auto-20260408.000000 estimated size is 624B full send of Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260213.120742 estimated size is 23.0M send from @auto-20260213.120742 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260213.130000 estimated size is 624B send from @auto-20260213.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260214.130000 estimated size is 137K send from @auto-20260214.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260215.130000 estimated size is 137K send from @auto-20260215.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260216.130000 estimated size is 137K send from @auto-20260216.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260217.130000 estimated size is 138K send from @auto-20260217.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260218.130000 estimated size is 138K send from @auto-20260218.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260219.130000 estimated size is 138K send from @auto-20260219.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260220.130000 estimated size is 138K send from @auto-20260220.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260221.130000 estimated size is 138K send from @auto-20260221.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260222.130000 estimated size is 138K send from @auto-20260222.130000 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260223.231925 estimated size is 142K send from @auto-20260223.231925 to Internal/.system/configs-ae32c386e13840b2bf9c0083275e7941@auto-20260408.000000 estimated size is 5.14M full send of Internal/.system/samba4@auto-20260223.231925 estimated size is 228K send from @auto-20260223.231925 to Internal/.system/samba4@auto-20260408.000000 estimated size is 181K full send of Internal/BackupDB@auto-20260223.231925 estimated size is 1.22G send from @auto-20260223.231925 to Internal/BackupDB@auto-20260408.000000 estimated size is 1022M total estimated size is 20.0T cannot unmount ‘/mnt/.ix-apps/docker’: pool or dataset is busy Broken pipe.```
This is not very structured, but the last phrase seems to cause the problem:
cannot unmount ‘/mnt/.ix-apps/docker’: pool or dataset is busy Broken pipe.
Why would Docker get in the way of a replication task?