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OpenZFS 8600 - ZFS channel programs - snapshot

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Authored by: Chris Williamson <chris.williamson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Don Brady <don.brady@delphix.com>

ZFS channel programs should be able to create snapshots.
In addition to the base snapshot functionality, this entails extra
logic to handle edge cases which were formerly not possible, such as
creating then destroying a snapshot in the same transaction sync.

OpenZFS-issue: https://www.illumos.org/issues/8600
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/68089b8b
This commit is contained in:
Chris Williamson
2018-02-08 09:24:39 -07:00
committed by Brian Behlendorf
parent af07368986
commit 234c91c508
22 changed files with 500 additions and 33 deletions
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module/zfs/dsl_dataset.c
+2 -9
View File
@@ -1140,13 +1140,6 @@ dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx)
return (0);
}
typedef struct dsl_dataset_snapshot_arg {
nvlist_t *ddsa_snaps;
nvlist_t *ddsa_props;
nvlist_t *ddsa_errors;
cred_t *ddsa_cr;
} dsl_dataset_snapshot_arg_t;
int
dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr)
@@ -1206,7 +1199,7 @@ dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
return (0);
}
static int
int
dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx)
{
dsl_dataset_snapshot_arg_t *ddsa = arg;
@@ -1486,7 +1479,7 @@ dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
spa_history_log_internal_ds(ds->ds_prev, "snapshot", tx, "");
}
static void
void
dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx)
{
dsl_dataset_snapshot_arg_t *ddsa = arg;