Monitor and Manage ZFS Shadow Migration
The Oracle Solaris 11.4 release provides improved ZFS shadow migration operation with enhancements for better visibility in monitoring migration errors and controlling in-progress migrations.
The following new options are introduced:
shadowstat -eare provided for monitoring migration errors for all migrations or a single migration.
shadowadmcontrol in-progress migrations. For example, you can identify shadow migration errors of multiple migration operations:
# shadowstat EST BYTES BYTES ELAPSED DATASET XFRD LEFT ERRORS TIME pinky/logarchive 16.4M 195M 1 00:01:20 pinky/dbarchive 4.49M 248M - 00:00:51 pinky/logarchive 17.3M 194M 1 00:01:24 pinky/dbarchive 5.16M 247M - 00:00:55You can identify the specific migration error as follows:
# shadowstat -E pinky/logarchive: PATH ERROR e-dir/socket Operation not supported pond/dbarchive: No errors encountered.For example, to cancel the migration as the open socket cannot be migrated:
# shadowadm cancel pinky/logarchive
For more information, see Managing ZFS File Systems in Oracle Solaris 11.4.
Read the entire article on the upcoming features in Oracle Solaris 11.4 (PDF).