@JorgeB , it panics again when executing the import manually zfs dbgmsg logs the following; timestamp message 1775041272 ffff88811c58b300 metaslab.c:1703:spa_set_allocator(): spa allocator: dynamic 1775041272 ffff88811c58b300 spa.c:6921:spa_tryimport(): spa_tryimport: importing cache 1775041272 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load($import-ffff88811c58b300-cache, config trusted): LOADING 1775041272 ffff8881a77fa200 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': probe done, cant_read=0 cant_write=1 1775041273 ffff88810696c400 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme1n1p1': open error=2 timeout=1007543090/1000000000 1775041273 ffff88811c58b300 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': best uberblock found for spa $import-ffff88811c58b300-cache. txg 3491005 1775041273 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load($import-ffff88811c58b300-cache, config untrusted): using uberblock with txg=3491005 1775041273 ffff8881a77fa200 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': probe done, cant_read=0 cant_write=1 1775041274 ffff88819b3e0000 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme1n1p1': open error=2 timeout=1008705958/1000000000 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading checkpoint txg 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading indirect vdev metadata 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Checking feature flags 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading special MOS directories 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading properties 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading AUX vdevs 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading vdev metadata 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading dedup tables 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading BRT 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Verifying Log Devices 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Verifying pool data 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Calculating deflated space 1775041274 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Starting import 1775041274 ffff88811c58b300 spa.c:9320:spa_async_request(): spa=$import-ffff88811c58b300-cache async request task=2048 1775041274 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load($import-ffff88811c58b300-cache, config trusted): LOADED 1775041274 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load($import-ffff88811c58b300-cache, config trusted): UNLOADING 1775041274 ffff88811c58b300 metaslab.c:1703:spa_set_allocator(): spa allocator: dynamic 1775041274 ffff88811c58b300 spa.c:6766:spa_import(): spa_import: importing cache 1775041274 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load(cache, config trusted): LOADING 1775041274 ffff88819d183300 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': probe done, cant_read=0 cant_write=1 1775041275 ffff888118a58000 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme1n1p1': open error=2 timeout=1004162104/1000000000 1775041275 ffff88811c58b300 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': best uberblock found for spa cache. txg 3491005 1775041275 ffff88811c58b300 spa_misc.c:430:spa_load_note(): spa_load(cache, config untrusted): using uberblock with txg=3491005 1775041275 ffff88819d183300 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme0n1p1': probe done, cant_read=0 cant_write=1 1775041276 ffff8881027a6600 vdev.c:184:vdev_dbgmsg(): disk vdev '/dev/nvme1n1p1': open error=2 timeout=1000928757/1000000000 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading checkpoint txg 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading indirect vdev metadata 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Checking feature flags 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading special MOS directories 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading properties 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading AUX vdevs 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading vdev metadata 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading dedup tables 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Loading BRT 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Verifying Log Devices 1775041276 ffff88811c58b300 spa_misc.c:2405:spa_import_progress_set_notes_impl(): 'cache' Verifying pool data