c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2024-12-26 03:09:34 +03:00
Code Issues Packages Projects Releases Wiki Activity

features.kernel layout should match features.pool

Browse Source 
The features.kernel layout should match features.pool.

Reviewed-by: Sara Hartse <sara.hartse@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #8566
This commit is contained in:
Don Brady 2019-04-04 20:00:55 -06:00 committed by Brian Behlendorf
parent a887d653b3
commit b4ddec7af6
2 changed files with 51 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
module/zfs/zfs_sysfs.c
View File

@ -19,7 +19,7 @@
* CDDL HEADER END
*/
/*
* Copyright (c) 2018 by Delphix. All rights reserved.
* Copyright (c) 2018, 2019 by Delphix. All rights reserved.
*/
#include <sys/types.h>
@ -351,43 +351,69 @@ pool_property_show(struct kobject *kobj, struct attribute *attr, char *buf)
*
* A user processes can easily check if the running zfs kernel module
* supports the new feature.
*
* For example, the initial channel_program feature was extended to support
* async calls (i.e. a sync flag). If this mechanism were in place at that
* time, we could have added a 'channel_program_async' to this list.
*/
static const char *zfs_features[] = {
/* --> Add new kernel features here (post ZoL 0.8.0) */
"initialize",
"trim",
static const char *zfs_kernel_features[] = {
/* --> Add new kernel features here */
"com.delphix:vdev_initialize",
"org.zfsonlinux:vdev_trim",
};
#define ZFS_FEATURE_COUNT ARRAY_SIZE(zfs_features)
#define KERNEL_FEATURE_COUNT ARRAY_SIZE(zfs_kernel_features)
static ssize_t
kernel_feature_show(struct kobject *kobj, struct attribute *attr, char *buf)
{
return (snprintf(buf, PAGE_SIZE, "supported\n"));
if (strcmp(attr->name, "supported") == 0)
return (snprintf(buf, PAGE_SIZE, "yes\n"));
return (0);
}
static void
kernel_feature_to_kobj(zfs_mod_kobj_t *parent, int slot, const char *name)
{
zfs_mod_kobj_t *zfs_kobj = &parent->zko_children[slot];
ASSERT3U(slot, <, KERNEL_FEATURE_COUNT);
ASSERT(name);
int err = zfs_kobj_init(zfs_kobj, 1, 0, kernel_feature_show);
if (err)
return;
zfs_kobj_add_attr(zfs_kobj, 0, "supported");
err = zfs_kobj_add(zfs_kobj, &parent->zko_kobj, name);
if (err)
zfs_kobj_release(&zfs_kobj->zko_kobj);
}
static int
zfs_kernel_features_init(zfs_mod_kobj_t *zfs_kobj, struct kobject *parent)
{
int err;
err = zfs_kobj_init(zfs_kobj, ZFS_FEATURE_COUNT, 0,
/*
* Create a parent kobject to host kernel features.
*
* '/sys/module/zfs/features.kernel'
*/
int err = zfs_kobj_init(zfs_kobj, 0, KERNEL_FEATURE_COUNT,
kernel_feature_show);
if (err)
return (err);
for (int f = 0; f < ZFS_FEATURE_COUNT; f++)
zfs_kobj_add_attr(zfs_kobj, f, zfs_features[f]);
err = zfs_kobj_add(zfs_kobj, parent, ZFS_SYSFS_KERNEL_FEATURES);
if (err)
if (err) {
zfs_kobj_release(&zfs_kobj->zko_kobj);
return (err);
}
return (err);
/*
* Now create a kobject for each feature.
*
* '/sys/module/zfs/features.kernel/<feature>'
*/
for (int f = 0; f < KERNEL_FEATURE_COUNT; f++)
kernel_feature_to_kobj(zfs_kobj, f, zfs_kernel_features[f]);
return (0);
}
/*

8
tests/zfs-tests/tests/functional/cli_root/zfs_sysfs/zfs_sysfs_live.ksh
View File

@ -21,7 +21,7 @@
#
#
# Copyright (c) 2018 by Delphix. All rights reserved.
# Copyright (c) 2018, 2019 by Delphix. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
@ -39,13 +39,15 @@ fi
claim="Expected '/sys/module/zfs/<dir>/<attr>' attributes are present"
feature_attr="/sys/module/zfs/features.pool/org.open-zfs:large_blocks/guid"
kernel_feature_attr="/sys/module/zfs/features.kernel/org.zfsonlinux:vdev_trim/supported"
pool_feature_attr="/sys/module/zfs/features.pool/org.open-zfs:large_blocks/guid"
pool_prop__attr="/sys/module/zfs/properties.pool/comment/values"
ds_prop__attr="/sys/module/zfs/properties.dataset/recordsize/values"
log_assert $claim
log_must cat $feature_attr
log_must cat $kernel_feature_attr
log_must cat $pool_feature_attr
log_must cat $pool_prop__attr
log_must cat $ds_prop__attr