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zdb: add -B option to generate backup stream

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This is more-or-less like `zfs send`, but specifying the snapshot by its
objset id for situations where it can't be referenced any other way.

Sponsored-By: Klara, Inc.
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: WHR <msl0000023508@gmail.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #14642
This commit is contained in:
Rob Norris
2023-03-15 18:18:10 +11:00
committed by Brian Behlendorf
parent 2b9f8ba673
commit 8653f1de48
6 changed files with 174 additions and 9 deletions
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module/zfs/dmu_send.c
+1 -2
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@@ -1955,7 +1955,7 @@ setup_featureflags(struct dmu_send_params *dspp, objset_t *os,
{
dsl_dataset_t *to_ds = dspp->to_ds;
dsl_pool_t *dp = dspp->dp;
#ifdef _KERNEL
if (dmu_objset_type(os) == DMU_OST_ZFS) {
uint64_t version;
if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &version) != 0)
@@ -1964,7 +1964,6 @@ setup_featureflags(struct dmu_send_params *dspp, objset_t *os,
if (version >= ZPL_VERSION_SA)
*featureflags |= DMU_BACKUP_FEATURE_SA_SPILL;
}
#endif
/* raw sends imply large_block_ok */
if ((dspp->rawok || dspp->large_block_ok) &&