zed: misc vdev_enc_sysfs_path fixes

There have been rare cases where the VDEV_ENC_SYSFS_PATH value that zed
gets passed is stale.  To mitigate this, dynamically check the sysfs
path at the time of zed event processing, and use the dynamic value if
possible.  Note that there will be other times when we can not
dynamically detect the sysfs path (like if a disk disappears) and have
to rely on the old value for things like turning on the fault LED.  That
is to say, we can't just blindly use the dynamic path in every case.

Also:
	- Add enclosure sysfs entry when running 'zpool add'
	- Fix 'slot' and 'enc' zpool.d scripts for nvme

Reviewed-by: Don Brady <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Tony Hutter <[email protected]>
Closes #15462 

1 files changed, 2 insertions, 0 deletions

diff --git a/include/libzutil.h b/include/libzutil.h
index 053b1ed4b..9842c225b 100644
--- a/include/libzutil.h
+++ b/include/libzutil.h
@@ -208,6 +208,8 @@ int for_each_vdev_cb(void *zhp, nvlist_t *nv, pool_vdev_iter_f func,
 int for_each_vdev_in_nvlist(nvlist_t *nvroot, pool_vdev_iter_f func,
     void *data);
 void update_vdevs_config_dev_sysfs_path(nvlist_t *config);
+_LIBZUTIL_H void update_vdev_config_dev_sysfs_path(nvlist_t *nv,
+    const char *path, const char *key);
 #ifdef	__cplusplus
 }
 #endif