diff options
Diffstat (limited to 'module/zfs/zvol.c')
| -rw-r--r-- | module/zfs/zvol.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c index 1511f763f..06bc75c63 100644 --- a/module/zfs/zvol.c +++ b/module/zfs/zvol.c @@ -482,6 +482,60 @@ zvol_replay_write(void *arg1, void *arg2, boolean_t byteswap) return (error); } +/* + * Replay a TX_CLONE_RANGE ZIL transaction that didn't get committed + * after a system failure. + * + * TODO: For now we drop block cloning transations for ZVOLs as they are + * unsupported, but we still need to inform BRT about that as we + * claimed them during pool import. + * This situation can occur when we try to import a pool from a ZFS + * version supporting block cloning for ZVOLs into a system that + * has this ZFS version, that doesn't support block cloning for ZVOLs. + */ +static int +zvol_replay_clone_range(void *arg1, void *arg2, boolean_t byteswap) +{ + char name[ZFS_MAX_DATASET_NAME_LEN]; + zvol_state_t *zv = arg1; + objset_t *os = zv->zv_objset; + lr_clone_range_t *lr = arg2; + blkptr_t *bp; + dmu_tx_t *tx; + spa_t *spa; + uint_t ii; + int error; + + dmu_objset_name(os, name); + cmn_err(CE_WARN, "ZFS dropping block cloning transaction for %s.", + name); + + if (byteswap) + byteswap_uint64_array(lr, sizeof (*lr)); + + tx = dmu_tx_create(os); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + dmu_tx_abort(tx); + return (error); + } + + spa = os->os_spa; + + for (ii = 0; ii < lr->lr_nbps; ii++) { + bp = &lr->lr_bps[ii]; + + if (!BP_IS_HOLE(bp)) { + zio_free(spa, dmu_tx_get_txg(tx), bp); + } + } + + (void) zil_replaying(zv->zv_zilog, tx); + dmu_tx_commit(tx); + + return (0); +} + static int zvol_replay_err(void *arg1, void *arg2, boolean_t byteswap) { @@ -516,6 +570,7 @@ zil_replay_func_t *const zvol_replay_vector[TX_MAX_TYPE] = { zvol_replay_err, /* TX_SETSAXATTR */ zvol_replay_err, /* TX_RENAME_EXCHANGE */ zvol_replay_err, /* TX_RENAME_WHITEOUT */ + zvol_replay_clone_range /* TX_CLONE_RANGE */ }; /* |