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Activate filesystem features only in syncing context

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When activating filesystem features after receiving a snapshot, do 
so only in syncing context.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #14304 
Closes #14252
This commit is contained in:
George Amanakis
2023-01-12 03:00:39 +01:00
committed by GitHub
parent 6320b9e68e
commit eee9362a72
6 changed files with 109 additions and 17 deletions
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module/zfs/dsl_dataset.c
+13 -9
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@@ -1761,16 +1761,20 @@ dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
/*
* We are not allowed to dirty a filesystem when done receiving
* a snapshot. In this case the flag SPA_FEATURE_LARGE_BLOCKS will
* not be set and a subsequent encrypted raw send will fail. Hence
* activate this feature if needed here.
* a snapshot. In this case some flags such as SPA_FEATURE_LARGE_BLOCKS
* will not be set and a subsequent encrypted raw send will fail. Hence
* activate this feature if needed here. This needs to happen only in
* syncing context.
*/
for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
if (zfeature_active(f, ds->ds_feature_activation[f]) &&
!(zfeature_active(f, ds->ds_feature[f]))) {
dsl_dataset_activate_feature(dsobj, f,
ds->ds_feature_activation[f], tx);
ds->ds_feature[f] = ds->ds_feature_activation[f];
if (dmu_tx_is_syncing(tx)) {
for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {
if (zfeature_active(f, ds->ds_feature_activation[f]) &&
!(zfeature_active(f, ds->ds_feature[f]))) {
dsl_dataset_activate_feature(dsobj, f,
ds->ds_feature_activation[f], tx);
ds->ds_feature[f] =
ds->ds_feature_activation[f];
}
}
}