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Add snapshots_changed_nsecs dataset property

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Add a read-only dataset property, snapshots_changed_nsecs, which 
exposes the nanosecond resolution version of snapshots_changed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Wolfgang Hoschek <wolfgang.hoschek@mac.com>
Closes #17998
Closes #18031
This commit is contained in:
Wolfgang Hoschek
2026-01-06 12:36:20 -05:00
committed by GitHub
parent 6eef5cdc94
commit c77f17b750
8 changed files with 89 additions and 11 deletions
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lib/libzfs/libzfs.abi
+2 -1
View File
@@ -2311,7 +2311,8 @@
<enumerator name='ZFS_PROP_DEFAULTUSEROBJQUOTA' value='103'/>
<enumerator name='ZFS_PROP_DEFAULTGROUPOBJQUOTA' value='104'/>
<enumerator name='ZFS_PROP_DEFAULTPROJECTOBJQUOTA' value='105'/>
<enumerator name='ZFS_NUM_PROPS' value='106'/>
<enumerator name='ZFS_PROP_SNAPSHOTS_CHANGED_NSECS' value='106'/>
<enumerator name='ZFS_NUM_PROPS' value='107'/>
</enum-decl>
<typedef-decl name='zfs_prop_t' type-id='4b000d60' id='58603c44'/>
<enum-decl name='zprop_source_t' naming-typedef-id='a2256d42' id='5903f80e'>
lib/libzfs/libzfs_dataset.c
+13
View File
@@ -3001,6 +3001,19 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
zcp_check(zhp, prop, val, NULL);
break;
case ZFS_PROP_SNAPSHOTS_CHANGED_NSECS:
{
if ((get_numeric_property(zhp, prop, src, &source,
&val) != 0) || val == 0) {
return (-1);
}
(void) snprintf(propbuf, proplen, "%llu",
(u_longlong_t)val);
}
zcp_check(zhp, prop, val, NULL);
break;
default:
switch (zfs_prop_get_type(prop)) {
case PROP_TYPE_NUMBER: