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zfs should optionally send holds

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Add -h switch to zfs send command to send dataset holds. If
holds are present in the stream, zfs receive will create them
on the target dataset, unless the zfs receive -h option is used
to skip receive of holds.

Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Signed-off-by: Paul Zuchowski <pzuchowski@datto.com>
Closes #7513
This commit is contained in:
Paul Zuchowski
2019-02-15 15:41:38 -05:00
committed by Brian Behlendorf
parent e73ab1b38c
commit 9c5e88b1de
10 changed files with 324 additions and 28 deletions
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include/sys/zfs_ioctl.h
+2 -1
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@@ -106,6 +106,7 @@ typedef enum drr_headertype {
#define DMU_BACKUP_FEATURE_LARGE_DNODE (1 << 23)
#define DMU_BACKUP_FEATURE_RAW (1 << 24)
/* flag #25 is reserved for the ZSTD compression feature */
#define DMU_BACKUP_FEATURE_HOLDS (1 << 26)
/*
* Mask of all supported backup features
@@ -115,7 +116,7 @@ typedef enum drr_headertype {
DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_LZ4 | \
DMU_BACKUP_FEATURE_RESUMING | DMU_BACKUP_FEATURE_LARGE_BLOCKS | \
DMU_BACKUP_FEATURE_COMPRESSED | DMU_BACKUP_FEATURE_LARGE_DNODE | \
DMU_BACKUP_FEATURE_RAW)
DMU_BACKUP_FEATURE_RAW | DMU_BACKUP_FEATURE_HOLDS)
/* Are all features in the given flag word currently supported? */
#define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))