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Illumos 4929 - want prevsnap property 

4929 want prevsnap property
Reviewed by: Adam Leventhal <adam.leventhal@delphix.com>
Reviewed by: Matt Amdur <matt.amdur@delphix.com>
Reviewed by: Saso Kiselkov <skiselkov.ml@gmail.com>
Reviewed by: Boris Protopopov <bprotopopov@hotmail.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/4929
  https://github.com/illumos/illumos-gate/commit/b461c74

Porting notes:
- [include/sys/fs/zfs.h]
  - f67d70 Create an 'overlay' property
  - 11b9ec Add full SELinux support
- [fs/zfs/dsl_dataset.c]
  - This increases the stack size of dsl_dataset_stats() but
    nothing has been changed until this is shown to be an issue.

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Matthew Ahrens 2016-01-01 14:15:31 +01:00 committed by Brian Behlendorf
parent 9867e8be2a
commit 1715493f38
3 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/sys/fs/zfs.h
View File

@ -155,6 +155,7 @@ typedef enum {
ZFS_PROP_RELATIME,
ZFS_PROP_REDUNDANT_METADATA,
ZFS_PROP_OVERLAY,
ZFS_PROP_PREV_SNAP,
ZFS_NUM_PROPS
} zfs_prop_t;

2
module/zcommon/zfs_prop.c
View File

@ -452,6 +452,8 @@ zfs_prop_init(void)
PROP_READONLY, ZFS_TYPE_DATASET, "OBJSETID");
zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent",
PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT");
zprop_register_hidden(ZFS_PROP_PREV_SNAP, "prevsnap", PROP_TYPE_STRING,
PROP_READONLY, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "PREVSNAP");
/*
* Property to be removed once libbe is integrated

6
module/zfs/dsl_dataset.c
View File

@ -1695,6 +1695,12 @@ dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv)
dsl_dataset_phys(ds)->ds_unique_bytes);
get_clones_stat(ds, nv);
} else {
if (ds->ds_prev != NULL && ds->ds_prev != dp->dp_origin_snap) {
char buf[MAXNAMELEN];
dsl_dataset_name(ds->ds_prev, buf);
dsl_prop_nvlist_add_string(nv, ZFS_PROP_PREV_SNAP, buf);
}
dsl_dir_stats(ds->ds_dir, nv);
}