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Vdev Properties Feature

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Add properties, similar to pool properties, to each vdev.
This makes use of the existing per-vdev ZAP that was added as
part of device evacuation/removal.

A large number of read-only properties are exposed,
many of the members of struct vdev_t, that provide useful
statistics.

Adds support for read-only "removing" vdev property.
Adds the "allocating" property that defaults to "on" and
can be set to "off" to prevent future allocations from that
top-level vdev.

Supports user-defined vdev properties.
Includes support for properties.vdev in SYSFS.

Co-authored-by: Allan Jude <allan@klarasystems.com>
Co-authored-by: Mark Maybee <mark.maybee@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Closes #11711
This commit is contained in:
Allan Jude
2021-11-30 09:46:25 -05:00
committed by GitHub
parent 5f64bf7fde
commit 2a673e76a9
33 changed files with 2746 additions and 243 deletions
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module/zcommon/zprop_common.c
+21 -1
View File
@@ -53,6 +53,8 @@ zprop_get_proptable(zfs_type_t type)
{
if (type == ZFS_TYPE_POOL)
return (zpool_prop_get_table());
else if (type == ZFS_TYPE_VDEV)
return (vdev_prop_get_table());
else
return (zfs_prop_get_table());
}
@@ -62,6 +64,8 @@ zprop_get_numprops(zfs_type_t type)
{
if (type == ZFS_TYPE_POOL)
return (ZPOOL_NUM_PROPS);
else if (type == ZFS_TYPE_VDEV)
return (VDEV_NUM_PROPS);
else
return (ZFS_NUM_PROPS);
}
@@ -81,7 +85,8 @@ zfs_mod_supported_prop(const char *name, zfs_type_t type)
return (B_TRUE);
#else
return (zfs_mod_supported(type == ZFS_TYPE_POOL ?
ZFS_SYSFS_POOL_PROPERTIES : ZFS_SYSFS_DATASET_PROPERTIES, name));
ZFS_SYSFS_POOL_PROPERTIES : (type == ZFS_TYPE_VDEV ?
ZFS_SYSFS_VDEV_PROPERTIES : ZFS_SYSFS_DATASET_PROPERTIES), name));
#endif
}
@@ -235,6 +240,8 @@ propname_match(const char *p, size_t len, zprop_desc_t *prop_entry)
int c;
#endif
ASSERT(propname != NULL);
if (len == strlen(propname) &&
strncmp(p, propname, len) == 0)
return (B_TRUE);
@@ -391,6 +398,18 @@ zprop_valid_for_type(int prop, zfs_type_t type, boolean_t headcheck)
return ((prop_tbl[prop].pd_types & type) != 0);
}
/*
* For user property names, we allow all lowercase alphanumeric characters, plus
* a few useful punctuation characters.
*/
int
zprop_valid_char(char c)
{
return ((c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') ||
c == '-' || c == '_' || c == '.' || c == ':');
}
#ifndef _KERNEL
/*
@@ -477,4 +496,5 @@ EXPORT_SYMBOL(zprop_index_to_string);
EXPORT_SYMBOL(zprop_random_value);
EXPORT_SYMBOL(zprop_values);
EXPORT_SYMBOL(zprop_valid_for_type);
EXPORT_SYMBOL(zprop_valid_char);
#endif