(solved if you have snapshot) need help to recover a damaged pool

[denut]

hello

I'm trying to recover my pool i can no more import them because she was damaged after i delete a lot of small files and the disk was desynchronized

the first command i try is zdb -k -e v18d3t to find the last good txg point and i found the 8384274

the i try to import using the command zpool import -f -o readonly=on -o failmode=continue v18d3t -T 8384274

but the result is canot import one or more devices is currently unavailable

the only disk is missing is the read cache (cache) this must not be a problem

in paralle the importation i have run in a other shell the command
sudo dtrace -qn 'zfs-dbgmsg{printf("%s\n", stringof(arg0))}'

the result at end of the failed import was

spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_verify found 5 metadata errors and 82235 data errors
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config trusted): FAILED: spa_load_verify failed [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_retry: rewind, max txg: 8384273
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384273
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384273
spa.c:8367:spa_async_request(): spa=v18d3t async request task=4096
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): performing a complete scan of the pool since extreme rewind is on. This may take a very long time.
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_verify found 6 metadata errors and 5 data errors
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config trusted): FAILED: spa_load_verify failed [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_retry: rewind, max txg: 8384272
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384272
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384272
spa.c:8367:spa_async_request(): spa=v18d3t async request task=4096
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): performing a complete scan of the pool since extreme rewind is on. This may take a very long time.
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_verify found 6 metadata errors and 5 data errors
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config trusted): FAILED: spa_load_verify failed [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_retry: rewind, max txg: 8384271
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384271
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384271
spa.c:8367:spa_async_request(): spa=v18d3t async request task=4096
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): performing a complete scan of the pool since extreme rewind is on. This may take a very long time.
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_verify found 6 metadata errors and 5 data errors
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config trusted): FAILED: spa_load_verify failed [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): spa_load_retry: rewind, max txg: 8384270
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384270
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384270
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384269
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384269
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384269
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384268
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384268
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384268
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384267
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384267
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384267
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384266
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384266
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384266
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384265
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384265
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384265
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384264
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384264
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384264
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384263
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384263
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384263
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384262
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384262
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384262
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384261
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384261
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384261
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384260
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384259
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384259
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384258
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384258
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384258
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384257
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384257
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384257
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384256
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384256
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384256
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384255
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384255
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384255
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384254
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384254
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384254
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384253
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384253
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384253
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384252
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384252
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384252
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384251
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384251
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384251
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384250
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384250
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384250
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384249
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384249
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384249
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384248
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384248
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384248
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384247
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384247
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384247
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384246
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384246
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384246
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384245
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384245
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384245
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384244
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384244
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384244
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384243
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384243
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384243
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384242
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9eb826f-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384228
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384228
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: unable to open rootbp in dsl_pool_init [error=5]
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): spa_load_retry: rewind, max txg: 8384227
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): LOADING
spa_misc.c:404:spa_load_failed(): spa_load(v18d3t, config untrusted): FAILED: no valid uberblock found
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): UNLOADING

have try following this tread https://www.delphix.com/fr/blog/openzfs-pool-import-recovery

but cannot run this command : zdb -dep /files -G -o zfs_max_missing_tvds=1 datapool (maybe the solution)

have any one a solution


thank's

 

[denut]

the last command i use

zpool import -N -o readonly=on -f -R /mnt -F v18d3t -T 8384228
cannot import 'v18d3t': one or more devices is currently unavailable

just before

zpool import -N -o readonly=on -f -R /mnt -F v18d3t -T 8384244
cannot import 'v18d3t': I/O error
Destroy and re-create the pool from
a backup source.
...

i found the good tsg point i think but how to make that the missing device will be ignored

 

[denut]

have found this command but not working

zdb -deG -o zfs_max_missing_tvds=1 -t 8384228 v18d3t

have this output:
ZFS_DBGMSG(zdb) START:
spa.c:6107:spa_import(): spa_import: importing v18d3t
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADING
vdev.c:161:vdev_dbgmsg(): disk vdev '/dev/gptid/e9e225a4-dbf7-11eb-9bac-000c29f3cfcf': best uberblock found for spa v18d3t. txg 8384228
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config untrusted): using uberblock with txg=8384228
spa.c:8367:spa_async_request(): spa=v18d3t async request task=2048
spa_misc.c:419:spa_load_note(): spa_load(v18d3t, config trusted): LOADED
spa.c:8367:spa_async_request(): spa=v18d3t async request task=32
ZFS_DBGMSG(zdb) END


but the line :
spa_load(datapool, config trusted): current settings allow for maximum 1 missing top-level vdevs at this stage

dont show.....

 

[denut]

solution for me


!!!!!!!!!!!!!!!!!!!!!! find last good txg point !!!!!!!!!!!!!!!!!!!!!!!

zdb -k -e v18d3t

result 8384274






!!!!! command to pass to see snapshot !!!!!!!!!!!!!!!!!!



set vfs.zfs.recover=1
set vfs.zfs.debug=1
sysctl vfs.zfs.spa.load_verify_metadata=0
sysctl vfs.zfs.spa.load_verify_data=0





!!!!!!!!!!!!!!!!! import the pool with last good txg !!!!!!!!!!!!!!


zpool import -N -o readonly=on -f -R /mnt -F -T 8384274 v18d3t







!!!!!!!!!!!!!!!!! display the snapshot list !!!!!!!!!!!!!!!!

zfs list -t snapshot






!!!!!!!!!!!!!!!! restore snapshot to a new pool "v4d1t" and new dataset "restore" !!!!!!!!!!!!!!!!!!!!!!!!!!!



zfs send -v -R v18d3t/soft@auto-2022-11-17_16-00 | zfs recv -F v4d1t/restore/soft



zfs send -v -R v18d3t/stock@auto-2022-11-17_16-00 | zfs recv -F v4d1t/restore/stock




zfs send -v -R v18d3t/videosurv@auto-2022-11-17_16-00 | zfs recv -F v4d1t/restore/videosurv